diff options
Diffstat (limited to 'drivers/clk/ti')
32 files changed, 12167 insertions, 0 deletions
diff --git a/drivers/clk/ti/Kconfig b/drivers/clk/ti/Kconfig new file mode 100644 index 000000000..271341787 --- /dev/null +++ b/drivers/clk/ti/Kconfig @@ -0,0 +1,6 @@ +config COMMON_CLK_TI_ADPLL + tristate "Clock driver for dm814x ADPLL" + depends on ARCH_OMAP2PLUS || COMPILE_TEST + default y if SOC_TI81XX + ---help--- + ADPLL clock driver for the dm814x SoC using common clock framework. diff --git a/drivers/clk/ti/Makefile b/drivers/clk/ti/Makefile new file mode 100644 index 000000000..5ab295d2a --- /dev/null +++ b/drivers/clk/ti/Makefile @@ -0,0 +1,24 @@ +# SPDX-License-Identifier: GPL-2.0 +ifeq ($(CONFIG_ARCH_OMAP2PLUS), y) + +obj-y += clk.o autoidle.o clockdomain.o +clk-common = dpll.o composite.o divider.o gate.o \ + fixed-factor.o mux.o apll.o \ + clkt_dpll.o clkt_iclk.o clkt_dflt.o \ + clkctrl.o +obj-$(CONFIG_SOC_AM33XX) += $(clk-common) clk-33xx.o dpll3xxx.o +obj-$(CONFIG_SOC_TI81XX) += $(clk-common) fapll.o clk-814x.o clk-816x.o +obj-$(CONFIG_ARCH_OMAP2) += $(clk-common) interface.o clk-2xxx.o +obj-$(CONFIG_ARCH_OMAP3) += $(clk-common) interface.o \ + clk-3xxx.o dpll3xxx.o +obj-$(CONFIG_ARCH_OMAP4) += $(clk-common) clk-44xx.o \ + dpll3xxx.o dpll44xx.o +obj-$(CONFIG_SOC_OMAP5) += $(clk-common) clk-54xx.o \ + dpll3xxx.o dpll44xx.o +obj-$(CONFIG_SOC_DRA7XX) += $(clk-common) clk-7xx.o \ + clk-dra7-atl.o dpll3xxx.o dpll44xx.o +obj-$(CONFIG_SOC_AM43XX) += $(clk-common) dpll3xxx.o clk-43xx.o + +endif # CONFIG_ARCH_OMAP2PLUS + +obj-$(CONFIG_COMMON_CLK_TI_ADPLL) += adpll.o diff --git a/drivers/clk/ti/adpll.c b/drivers/clk/ti/adpll.c new file mode 100644 index 000000000..14926e07d --- /dev/null +++ b/drivers/clk/ti/adpll.c @@ -0,0 +1,978 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/clk-provider.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/math64.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/string.h> + +#define ADPLL_PLLSS_MMR_LOCK_OFFSET 0x00 /* Managed by MPPULL */ +#define ADPLL_PLLSS_MMR_LOCK_ENABLED 0x1f125B64 +#define ADPLL_PLLSS_MMR_UNLOCK_MAGIC 0x1eda4c3d + +#define ADPLL_PWRCTRL_OFFSET 0x00 +#define ADPLL_PWRCTRL_PONIN 5 +#define ADPLL_PWRCTRL_PGOODIN 4 +#define ADPLL_PWRCTRL_RET 3 +#define ADPLL_PWRCTRL_ISORET 2 +#define ADPLL_PWRCTRL_ISOSCAN 1 +#define ADPLL_PWRCTRL_OFFMODE 0 + +#define ADPLL_CLKCTRL_OFFSET 0x04 +#define ADPLL_CLKCTRL_CLKDCOLDOEN 29 +#define ADPLL_CLKCTRL_IDLE 23 +#define ADPLL_CLKCTRL_CLKOUTEN 20 +#define ADPLL_CLKINPHIFSEL_ADPLL_S 19 /* REVISIT: which bit? */ +#define ADPLL_CLKCTRL_CLKOUTLDOEN_ADPLL_LJ 19 +#define ADPLL_CLKCTRL_ULOWCLKEN 18 +#define ADPLL_CLKCTRL_CLKDCOLDOPWDNZ 17 +#define ADPLL_CLKCTRL_M2PWDNZ 16 +#define ADPLL_CLKCTRL_M3PWDNZ_ADPLL_S 15 +#define ADPLL_CLKCTRL_LOWCURRSTDBY_ADPLL_S 13 +#define ADPLL_CLKCTRL_LPMODE_ADPLL_S 12 +#define ADPLL_CLKCTRL_REGM4XEN_ADPLL_S 10 +#define ADPLL_CLKCTRL_SELFREQDCO_ADPLL_LJ 10 +#define ADPLL_CLKCTRL_TINITZ 0 + +#define ADPLL_TENABLE_OFFSET 0x08 +#define ADPLL_TENABLEDIV_OFFSET 0x8c + +#define ADPLL_M2NDIV_OFFSET 0x10 +#define ADPLL_M2NDIV_M2 16 +#define ADPLL_M2NDIV_M2_ADPLL_S_WIDTH 5 +#define ADPLL_M2NDIV_M2_ADPLL_LJ_WIDTH 7 + +#define ADPLL_MN2DIV_OFFSET 0x14 +#define ADPLL_MN2DIV_N2 16 + +#define ADPLL_FRACDIV_OFFSET 0x18 +#define ADPLL_FRACDIV_REGSD 24 +#define ADPLL_FRACDIV_FRACTIONALM 0 +#define ADPLL_FRACDIV_FRACTIONALM_MASK 0x3ffff + +#define ADPLL_BWCTRL_OFFSET 0x1c +#define ADPLL_BWCTRL_BWCONTROL 1 +#define ADPLL_BWCTRL_BW_INCR_DECRZ 0 + +#define ADPLL_RESERVED_OFFSET 0x20 + +#define ADPLL_STATUS_OFFSET 0x24 +#define ADPLL_STATUS_PONOUT 31 +#define ADPLL_STATUS_PGOODOUT 30 +#define ADPLL_STATUS_LDOPWDN 29 +#define ADPLL_STATUS_RECAL_BSTATUS3 28 +#define ADPLL_STATUS_RECAL_OPPIN 27 +#define ADPLL_STATUS_PHASELOCK 10 +#define ADPLL_STATUS_FREQLOCK 9 +#define ADPLL_STATUS_BYPASSACK 8 +#define ADPLL_STATUS_LOSSREF 6 +#define ADPLL_STATUS_CLKOUTENACK 5 +#define ADPLL_STATUS_LOCK2 4 +#define ADPLL_STATUS_M2CHANGEACK 3 +#define ADPLL_STATUS_HIGHJITTER 1 +#define ADPLL_STATUS_BYPASS 0 +#define ADPLL_STATUS_PREPARED_MASK (BIT(ADPLL_STATUS_PHASELOCK) | \ + BIT(ADPLL_STATUS_FREQLOCK)) + +#define ADPLL_M3DIV_OFFSET 0x28 /* Only on MPUPLL */ +#define ADPLL_M3DIV_M3 0 +#define ADPLL_M3DIV_M3_WIDTH 5 +#define ADPLL_M3DIV_M3_MASK 0x1f + +#define ADPLL_RAMPCTRL_OFFSET 0x2c /* Only on MPUPLL */ +#define ADPLL_RAMPCTRL_CLKRAMPLEVEL 19 +#define ADPLL_RAMPCTRL_CLKRAMPRATE 16 +#define ADPLL_RAMPCTRL_RELOCK_RAMP_EN 0 + +#define MAX_ADPLL_INPUTS 3 +#define MAX_ADPLL_OUTPUTS 4 +#define ADPLL_MAX_RETRIES 5 + +#define to_dco(_hw) container_of(_hw, struct ti_adpll_dco_data, hw) +#define to_adpll(_hw) container_of(_hw, struct ti_adpll_data, dco) +#define to_clkout(_hw) container_of(_hw, struct ti_adpll_clkout_data, hw) + +enum ti_adpll_clocks { + TI_ADPLL_DCO, + TI_ADPLL_DCO_GATE, + TI_ADPLL_N2, + TI_ADPLL_M2, + TI_ADPLL_M2_GATE, + TI_ADPLL_BYPASS, + TI_ADPLL_HIF, + TI_ADPLL_DIV2, + TI_ADPLL_CLKOUT, + TI_ADPLL_CLKOUT2, + TI_ADPLL_M3, +}; + +#define TI_ADPLL_NR_CLOCKS (TI_ADPLL_M3 + 1) + +enum ti_adpll_inputs { + TI_ADPLL_CLKINP, + TI_ADPLL_CLKINPULOW, + TI_ADPLL_CLKINPHIF, +}; + +enum ti_adpll_s_outputs { + TI_ADPLL_S_DCOCLKLDO, + TI_ADPLL_S_CLKOUT, + TI_ADPLL_S_CLKOUTX2, + TI_ADPLL_S_CLKOUTHIF, +}; + +enum ti_adpll_lj_outputs { + TI_ADPLL_LJ_CLKDCOLDO, + TI_ADPLL_LJ_CLKOUT, + TI_ADPLL_LJ_CLKOUTLDO, +}; + +struct ti_adpll_platform_data { + const bool is_type_s; + const int nr_max_inputs; + const int nr_max_outputs; + const int output_index; +}; + +struct ti_adpll_clock { + struct clk *clk; + struct clk_lookup *cl; + void (*unregister)(struct clk *clk); +}; + +struct ti_adpll_dco_data { + struct clk_hw hw; +}; + +struct ti_adpll_clkout_data { + struct ti_adpll_data *adpll; + struct clk_gate gate; + struct clk_hw hw; +}; + +struct ti_adpll_data { + struct device *dev; + const struct ti_adpll_platform_data *c; + struct device_node *np; + unsigned long pa; + void __iomem *iobase; + void __iomem *regs; + spinlock_t lock; /* For ADPLL shared register access */ + const char *parent_names[MAX_ADPLL_INPUTS]; + struct clk *parent_clocks[MAX_ADPLL_INPUTS]; + struct ti_adpll_clock *clocks; + struct clk_onecell_data outputs; + struct ti_adpll_dco_data dco; +}; + +static const char *ti_adpll_clk_get_name(struct ti_adpll_data *d, + int output_index, + const char *postfix) +{ + const char *name; + int err; + + if (output_index >= 0) { + err = of_property_read_string_index(d->np, + "clock-output-names", + output_index, + &name); + if (err) + return NULL; + } else { + name = devm_kasprintf(d->dev, GFP_KERNEL, "%08lx.adpll.%s", + d->pa, postfix); + } + + return name; +} + +#define ADPLL_MAX_CON_ID 16 /* See MAX_CON_ID */ + +static int ti_adpll_setup_clock(struct ti_adpll_data *d, struct clk *clock, + int index, int output_index, const char *name, + void (*unregister)(struct clk *clk)) +{ + struct clk_lookup *cl; + const char *postfix = NULL; + char con_id[ADPLL_MAX_CON_ID]; + + d->clocks[index].clk = clock; + d->clocks[index].unregister = unregister; + + /* Separate con_id in format "pll040dcoclkldo" to fit MAX_CON_ID */ + postfix = strrchr(name, '.'); + if (postfix && strlen(postfix) > 1) { + if (strlen(postfix) > ADPLL_MAX_CON_ID) + dev_warn(d->dev, "clock %s con_id lookup may fail\n", + name); + snprintf(con_id, 16, "pll%03lx%s", d->pa & 0xfff, postfix + 1); + cl = clkdev_create(clock, con_id, NULL); + if (!cl) + return -ENOMEM; + d->clocks[index].cl = cl; + } else { + dev_warn(d->dev, "no con_id for clock %s\n", name); + } + + if (output_index < 0) + return 0; + + d->outputs.clks[output_index] = clock; + d->outputs.clk_num++; + + return 0; +} + +static int ti_adpll_init_divider(struct ti_adpll_data *d, + enum ti_adpll_clocks index, + int output_index, char *name, + struct clk *parent_clock, + void __iomem *reg, + u8 shift, u8 width, + u8 clk_divider_flags) +{ + const char *child_name; + const char *parent_name; + struct clk *clock; + + child_name = ti_adpll_clk_get_name(d, output_index, name); + if (!child_name) + return -EINVAL; + + parent_name = __clk_get_name(parent_clock); + clock = clk_register_divider(d->dev, child_name, parent_name, 0, + reg, shift, width, clk_divider_flags, + &d->lock); + if (IS_ERR(clock)) { + dev_err(d->dev, "failed to register divider %s: %li\n", + name, PTR_ERR(clock)); + return PTR_ERR(clock); + } + + return ti_adpll_setup_clock(d, clock, index, output_index, child_name, + clk_unregister_divider); +} + +static int ti_adpll_init_mux(struct ti_adpll_data *d, + enum ti_adpll_clocks index, + char *name, struct clk *clk0, + struct clk *clk1, + void __iomem *reg, + u8 shift) +{ + const char *child_name; + const char *parents[2]; + struct clk *clock; + + child_name = ti_adpll_clk_get_name(d, -ENODEV, name); + if (!child_name) + return -ENOMEM; + parents[0] = __clk_get_name(clk0); + parents[1] = __clk_get_name(clk1); + clock = clk_register_mux(d->dev, child_name, parents, 2, 0, + reg, shift, 1, 0, &d->lock); + if (IS_ERR(clock)) { + dev_err(d->dev, "failed to register mux %s: %li\n", + name, PTR_ERR(clock)); + return PTR_ERR(clock); + } + + return ti_adpll_setup_clock(d, clock, index, -ENODEV, child_name, + clk_unregister_mux); +} + +static int ti_adpll_init_gate(struct ti_adpll_data *d, + enum ti_adpll_clocks index, + int output_index, char *name, + struct clk *parent_clock, + void __iomem *reg, + u8 bit_idx, + u8 clk_gate_flags) +{ + const char *child_name; + const char *parent_name; + struct clk *clock; + + child_name = ti_adpll_clk_get_name(d, output_index, name); + if (!child_name) + return -EINVAL; + + parent_name = __clk_get_name(parent_clock); + clock = clk_register_gate(d->dev, child_name, parent_name, 0, + reg, bit_idx, clk_gate_flags, + &d->lock); + if (IS_ERR(clock)) { + dev_err(d->dev, "failed to register gate %s: %li\n", + name, PTR_ERR(clock)); + return PTR_ERR(clock); + } + + return ti_adpll_setup_clock(d, clock, index, output_index, child_name, + clk_unregister_gate); +} + +static int ti_adpll_init_fixed_factor(struct ti_adpll_data *d, + enum ti_adpll_clocks index, + char *name, + struct clk *parent_clock, + unsigned int mult, + unsigned int div) +{ + const char *child_name; + const char *parent_name; + struct clk *clock; + + child_name = ti_adpll_clk_get_name(d, -ENODEV, name); + if (!child_name) + return -ENOMEM; + + parent_name = __clk_get_name(parent_clock); + clock = clk_register_fixed_factor(d->dev, child_name, parent_name, + 0, mult, div); + if (IS_ERR(clock)) + return PTR_ERR(clock); + + return ti_adpll_setup_clock(d, clock, index, -ENODEV, child_name, + clk_unregister); +} + +static void ti_adpll_set_idle_bypass(struct ti_adpll_data *d) +{ + unsigned long flags; + u32 v; + + spin_lock_irqsave(&d->lock, flags); + v = readl_relaxed(d->regs + ADPLL_CLKCTRL_OFFSET); + v |= BIT(ADPLL_CLKCTRL_IDLE); + writel_relaxed(v, d->regs + ADPLL_CLKCTRL_OFFSET); + spin_unlock_irqrestore(&d->lock, flags); +} + +static void ti_adpll_clear_idle_bypass(struct ti_adpll_data *d) +{ + unsigned long flags; + u32 v; + + spin_lock_irqsave(&d->lock, flags); + v = readl_relaxed(d->regs + ADPLL_CLKCTRL_OFFSET); + v &= ~BIT(ADPLL_CLKCTRL_IDLE); + writel_relaxed(v, d->regs + ADPLL_CLKCTRL_OFFSET); + spin_unlock_irqrestore(&d->lock, flags); +} + +static bool ti_adpll_clock_is_bypass(struct ti_adpll_data *d) +{ + u32 v; + + v = readl_relaxed(d->regs + ADPLL_STATUS_OFFSET); + + return v & BIT(ADPLL_STATUS_BYPASS); +} + +/* + * Locked and bypass are not actually mutually exclusive: if you only care + * about the DCO clock and not CLKOUT you can clear M2PWDNZ before enabling + * the PLL, resulting in status (FREQLOCK | PHASELOCK | BYPASS) after lock. + */ +static bool ti_adpll_is_locked(struct ti_adpll_data *d) +{ + u32 v = readl_relaxed(d->regs + ADPLL_STATUS_OFFSET); + + return (v & ADPLL_STATUS_PREPARED_MASK) == ADPLL_STATUS_PREPARED_MASK; +} + +static int ti_adpll_wait_lock(struct ti_adpll_data *d) +{ + int retries = ADPLL_MAX_RETRIES; + + do { + if (ti_adpll_is_locked(d)) + return 0; + usleep_range(200, 300); + } while (retries--); + + dev_err(d->dev, "pll failed to lock\n"); + return -ETIMEDOUT; +} + +static int ti_adpll_prepare(struct clk_hw *hw) +{ + struct ti_adpll_dco_data *dco = to_dco(hw); + struct ti_adpll_data *d = to_adpll(dco); + + ti_adpll_clear_idle_bypass(d); + ti_adpll_wait_lock(d); + + return 0; +} + +static void ti_adpll_unprepare(struct clk_hw *hw) +{ + struct ti_adpll_dco_data *dco = to_dco(hw); + struct ti_adpll_data *d = to_adpll(dco); + + ti_adpll_set_idle_bypass(d); +} + +static int ti_adpll_is_prepared(struct clk_hw *hw) +{ + struct ti_adpll_dco_data *dco = to_dco(hw); + struct ti_adpll_data *d = to_adpll(dco); + + return ti_adpll_is_locked(d); +} + +/* + * Note that the DCO clock is never subject to bypass: if the PLL is off, + * dcoclk is low. + */ +static unsigned long ti_adpll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct ti_adpll_dco_data *dco = to_dco(hw); + struct ti_adpll_data *d = to_adpll(dco); + u32 frac_m, divider, v; + u64 rate; + unsigned long flags; + + if (ti_adpll_clock_is_bypass(d)) + return 0; + + spin_lock_irqsave(&d->lock, flags); + frac_m = readl_relaxed(d->regs + ADPLL_FRACDIV_OFFSET); + frac_m &= ADPLL_FRACDIV_FRACTIONALM_MASK; + rate = (u64)readw_relaxed(d->regs + ADPLL_MN2DIV_OFFSET) << 18; + rate += frac_m; + rate *= parent_rate; + divider = (readw_relaxed(d->regs + ADPLL_M2NDIV_OFFSET) + 1) << 18; + spin_unlock_irqrestore(&d->lock, flags); + + do_div(rate, divider); + + if (d->c->is_type_s) { + v = readl_relaxed(d->regs + ADPLL_CLKCTRL_OFFSET); + if (v & BIT(ADPLL_CLKCTRL_REGM4XEN_ADPLL_S)) + rate *= 4; + rate *= 2; + } + + return rate; +} + +/* PLL parent is always clkinp, bypass only affects the children */ +static u8 ti_adpll_get_parent(struct clk_hw *hw) +{ + return 0; +} + +static const struct clk_ops ti_adpll_ops = { + .prepare = ti_adpll_prepare, + .unprepare = ti_adpll_unprepare, + .is_prepared = ti_adpll_is_prepared, + .recalc_rate = ti_adpll_recalc_rate, + .get_parent = ti_adpll_get_parent, +}; + +static int ti_adpll_init_dco(struct ti_adpll_data *d) +{ + struct clk_init_data init; + struct clk *clock; + const char *postfix; + int width, err; + + d->outputs.clks = devm_kcalloc(d->dev, + MAX_ADPLL_OUTPUTS, + sizeof(struct clk *), + GFP_KERNEL); + if (!d->outputs.clks) + return -ENOMEM; + + if (d->c->output_index < 0) + postfix = "dco"; + else + postfix = NULL; + + init.name = ti_adpll_clk_get_name(d, d->c->output_index, postfix); + if (!init.name) + return -EINVAL; + + init.parent_names = d->parent_names; + init.num_parents = d->c->nr_max_inputs; + init.ops = &ti_adpll_ops; + init.flags = CLK_GET_RATE_NOCACHE; + d->dco.hw.init = &init; + + if (d->c->is_type_s) + width = 5; + else + width = 4; + + /* Internal input clock divider N2 */ + err = ti_adpll_init_divider(d, TI_ADPLL_N2, -ENODEV, "n2", + d->parent_clocks[TI_ADPLL_CLKINP], + d->regs + ADPLL_MN2DIV_OFFSET, + ADPLL_MN2DIV_N2, width, 0); + if (err) + return err; + + clock = devm_clk_register(d->dev, &d->dco.hw); + if (IS_ERR(clock)) + return PTR_ERR(clock); + + return ti_adpll_setup_clock(d, clock, TI_ADPLL_DCO, d->c->output_index, + init.name, NULL); +} + +static int ti_adpll_clkout_enable(struct clk_hw *hw) +{ + struct ti_adpll_clkout_data *co = to_clkout(hw); + struct clk_hw *gate_hw = &co->gate.hw; + + __clk_hw_set_clk(gate_hw, hw); + + return clk_gate_ops.enable(gate_hw); +} + +static void ti_adpll_clkout_disable(struct clk_hw *hw) +{ + struct ti_adpll_clkout_data *co = to_clkout(hw); + struct clk_hw *gate_hw = &co->gate.hw; + + __clk_hw_set_clk(gate_hw, hw); + clk_gate_ops.disable(gate_hw); +} + +static int ti_adpll_clkout_is_enabled(struct clk_hw *hw) +{ + struct ti_adpll_clkout_data *co = to_clkout(hw); + struct clk_hw *gate_hw = &co->gate.hw; + + __clk_hw_set_clk(gate_hw, hw); + + return clk_gate_ops.is_enabled(gate_hw); +} + +/* Setting PLL bypass puts clkout and clkoutx2 into bypass */ +static u8 ti_adpll_clkout_get_parent(struct clk_hw *hw) +{ + struct ti_adpll_clkout_data *co = to_clkout(hw); + struct ti_adpll_data *d = co->adpll; + + return ti_adpll_clock_is_bypass(d); +} + +static int ti_adpll_init_clkout(struct ti_adpll_data *d, + enum ti_adpll_clocks index, + int output_index, int gate_bit, + char *name, struct clk *clk0, + struct clk *clk1) +{ + struct ti_adpll_clkout_data *co; + struct clk_init_data init; + struct clk_ops *ops; + const char *parent_names[2]; + const char *child_name; + struct clk *clock; + int err; + + co = devm_kzalloc(d->dev, sizeof(*co), GFP_KERNEL); + if (!co) + return -ENOMEM; + co->adpll = d; + + err = of_property_read_string_index(d->np, + "clock-output-names", + output_index, + &child_name); + if (err) + return err; + + ops = devm_kzalloc(d->dev, sizeof(*ops), GFP_KERNEL); + if (!ops) + return -ENOMEM; + + init.name = child_name; + init.ops = ops; + init.flags = CLK_IS_BASIC; + co->hw.init = &init; + parent_names[0] = __clk_get_name(clk0); + parent_names[1] = __clk_get_name(clk1); + init.parent_names = parent_names; + init.num_parents = 2; + + ops->get_parent = ti_adpll_clkout_get_parent; + ops->determine_rate = __clk_mux_determine_rate; + if (gate_bit) { + co->gate.lock = &d->lock; + co->gate.reg = d->regs + ADPLL_CLKCTRL_OFFSET; + co->gate.bit_idx = gate_bit; + ops->enable = ti_adpll_clkout_enable; + ops->disable = ti_adpll_clkout_disable; + ops->is_enabled = ti_adpll_clkout_is_enabled; + } + + clock = devm_clk_register(d->dev, &co->hw); + if (IS_ERR(clock)) { + dev_err(d->dev, "failed to register output %s: %li\n", + name, PTR_ERR(clock)); + return PTR_ERR(clock); + } + + return ti_adpll_setup_clock(d, clock, index, output_index, child_name, + NULL); +} + +static int ti_adpll_init_children_adpll_s(struct ti_adpll_data *d) +{ + int err; + + if (!d->c->is_type_s) + return 0; + + /* Internal mux, sources from divider N2 or clkinpulow */ + err = ti_adpll_init_mux(d, TI_ADPLL_BYPASS, "bypass", + d->clocks[TI_ADPLL_N2].clk, + d->parent_clocks[TI_ADPLL_CLKINPULOW], + d->regs + ADPLL_CLKCTRL_OFFSET, + ADPLL_CLKCTRL_ULOWCLKEN); + if (err) + return err; + + /* Internal divider M2, sources DCO */ + err = ti_adpll_init_divider(d, TI_ADPLL_M2, -ENODEV, "m2", + d->clocks[TI_ADPLL_DCO].clk, + d->regs + ADPLL_M2NDIV_OFFSET, + ADPLL_M2NDIV_M2, + ADPLL_M2NDIV_M2_ADPLL_S_WIDTH, + CLK_DIVIDER_ONE_BASED); + if (err) + return err; + + /* Internal fixed divider, after M2 before clkout */ + err = ti_adpll_init_fixed_factor(d, TI_ADPLL_DIV2, "div2", + d->clocks[TI_ADPLL_M2].clk, + 1, 2); + if (err) + return err; + + /* Output clkout with a mux and gate, sources from div2 or bypass */ + err = ti_adpll_init_clkout(d, TI_ADPLL_CLKOUT, TI_ADPLL_S_CLKOUT, + ADPLL_CLKCTRL_CLKOUTEN, "clkout", + d->clocks[TI_ADPLL_DIV2].clk, + d->clocks[TI_ADPLL_BYPASS].clk); + if (err) + return err; + + /* Output clkoutx2 with a mux and gate, sources from M2 or bypass */ + err = ti_adpll_init_clkout(d, TI_ADPLL_CLKOUT2, TI_ADPLL_S_CLKOUTX2, 0, + "clkout2", d->clocks[TI_ADPLL_M2].clk, + d->clocks[TI_ADPLL_BYPASS].clk); + if (err) + return err; + + /* Internal mux, sources from DCO and clkinphif */ + if (d->parent_clocks[TI_ADPLL_CLKINPHIF]) { + err = ti_adpll_init_mux(d, TI_ADPLL_HIF, "hif", + d->clocks[TI_ADPLL_DCO].clk, + d->parent_clocks[TI_ADPLL_CLKINPHIF], + d->regs + ADPLL_CLKCTRL_OFFSET, + ADPLL_CLKINPHIFSEL_ADPLL_S); + if (err) + return err; + } + + /* Output clkouthif with a divider M3, sources from hif */ + err = ti_adpll_init_divider(d, TI_ADPLL_M3, TI_ADPLL_S_CLKOUTHIF, "m3", + d->clocks[TI_ADPLL_HIF].clk, + d->regs + ADPLL_M3DIV_OFFSET, + ADPLL_M3DIV_M3, + ADPLL_M3DIV_M3_WIDTH, + CLK_DIVIDER_ONE_BASED); + if (err) + return err; + + /* Output clock dcoclkldo is the DCO */ + + return 0; +} + +static int ti_adpll_init_children_adpll_lj(struct ti_adpll_data *d) +{ + int err; + + if (d->c->is_type_s) + return 0; + + /* Output clkdcoldo, gated output of DCO */ + err = ti_adpll_init_gate(d, TI_ADPLL_DCO_GATE, TI_ADPLL_LJ_CLKDCOLDO, + "clkdcoldo", d->clocks[TI_ADPLL_DCO].clk, + d->regs + ADPLL_CLKCTRL_OFFSET, + ADPLL_CLKCTRL_CLKDCOLDOEN, 0); + if (err) + return err; + + /* Internal divider M2, sources from DCO */ + err = ti_adpll_init_divider(d, TI_ADPLL_M2, -ENODEV, + "m2", d->clocks[TI_ADPLL_DCO].clk, + d->regs + ADPLL_M2NDIV_OFFSET, + ADPLL_M2NDIV_M2, + ADPLL_M2NDIV_M2_ADPLL_LJ_WIDTH, + CLK_DIVIDER_ONE_BASED); + if (err) + return err; + + /* Output clkoutldo, gated output of M2 */ + err = ti_adpll_init_gate(d, TI_ADPLL_M2_GATE, TI_ADPLL_LJ_CLKOUTLDO, + "clkoutldo", d->clocks[TI_ADPLL_M2].clk, + d->regs + ADPLL_CLKCTRL_OFFSET, + ADPLL_CLKCTRL_CLKOUTLDOEN_ADPLL_LJ, + 0); + if (err) + return err; + + /* Internal mux, sources from divider N2 or clkinpulow */ + err = ti_adpll_init_mux(d, TI_ADPLL_BYPASS, "bypass", + d->clocks[TI_ADPLL_N2].clk, + d->parent_clocks[TI_ADPLL_CLKINPULOW], + d->regs + ADPLL_CLKCTRL_OFFSET, + ADPLL_CLKCTRL_ULOWCLKEN); + if (err) + return err; + + /* Output clkout, sources M2 or bypass */ + err = ti_adpll_init_clkout(d, TI_ADPLL_CLKOUT, TI_ADPLL_S_CLKOUT, + ADPLL_CLKCTRL_CLKOUTEN, "clkout", + d->clocks[TI_ADPLL_M2].clk, + d->clocks[TI_ADPLL_BYPASS].clk); + if (err) + return err; + + return 0; +} + +static void ti_adpll_free_resources(struct ti_adpll_data *d) +{ + int i; + + for (i = TI_ADPLL_M3; i >= 0; i--) { + struct ti_adpll_clock *ac = &d->clocks[i]; + + if (!ac || IS_ERR_OR_NULL(ac->clk)) + continue; + if (ac->cl) + clkdev_drop(ac->cl); + if (ac->unregister) + ac->unregister(ac->clk); + } +} + +/* MPU PLL manages the lock register for all PLLs */ +static void ti_adpll_unlock_all(void __iomem *reg) +{ + u32 v; + + v = readl_relaxed(reg); + if (v == ADPLL_PLLSS_MMR_LOCK_ENABLED) + writel_relaxed(ADPLL_PLLSS_MMR_UNLOCK_MAGIC, reg); +} + +static int ti_adpll_init_registers(struct ti_adpll_data *d) +{ + int register_offset = 0; + + if (d->c->is_type_s) { + register_offset = 8; + ti_adpll_unlock_all(d->iobase + ADPLL_PLLSS_MMR_LOCK_OFFSET); + } + + d->regs = d->iobase + register_offset + ADPLL_PWRCTRL_OFFSET; + + return 0; +} + +static int ti_adpll_init_inputs(struct ti_adpll_data *d) +{ + const char *error = "need at least %i inputs"; + struct clk *clock; + int nr_inputs; + + nr_inputs = of_clk_get_parent_count(d->np); + if (nr_inputs < d->c->nr_max_inputs) { + dev_err(d->dev, error, nr_inputs); + return -EINVAL; + } + of_clk_parent_fill(d->np, d->parent_names, nr_inputs); + + clock = devm_clk_get(d->dev, d->parent_names[0]); + if (IS_ERR(clock)) { + dev_err(d->dev, "could not get clkinp\n"); + return PTR_ERR(clock); + } + d->parent_clocks[TI_ADPLL_CLKINP] = clock; + + clock = devm_clk_get(d->dev, d->parent_names[1]); + if (IS_ERR(clock)) { + dev_err(d->dev, "could not get clkinpulow clock\n"); + return PTR_ERR(clock); + } + d->parent_clocks[TI_ADPLL_CLKINPULOW] = clock; + + if (d->c->is_type_s) { + clock = devm_clk_get(d->dev, d->parent_names[2]); + if (IS_ERR(clock)) { + dev_err(d->dev, "could not get clkinphif clock\n"); + return PTR_ERR(clock); + } + d->parent_clocks[TI_ADPLL_CLKINPHIF] = clock; + } + + return 0; +} + +static const struct ti_adpll_platform_data ti_adpll_type_s = { + .is_type_s = true, + .nr_max_inputs = MAX_ADPLL_INPUTS, + .nr_max_outputs = MAX_ADPLL_OUTPUTS, + .output_index = TI_ADPLL_S_DCOCLKLDO, +}; + +static const struct ti_adpll_platform_data ti_adpll_type_lj = { + .is_type_s = false, + .nr_max_inputs = MAX_ADPLL_INPUTS - 1, + .nr_max_outputs = MAX_ADPLL_OUTPUTS - 1, + .output_index = -EINVAL, +}; + +static const struct of_device_id ti_adpll_match[] = { + { .compatible = "ti,dm814-adpll-s-clock", &ti_adpll_type_s }, + { .compatible = "ti,dm814-adpll-lj-clock", &ti_adpll_type_lj }, + {}, +}; +MODULE_DEVICE_TABLE(of, ti_adpll_match); + +static int ti_adpll_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + struct device *dev = &pdev->dev; + const struct of_device_id *match; + const struct ti_adpll_platform_data *pdata; + struct ti_adpll_data *d; + struct resource *res; + int err; + + match = of_match_device(ti_adpll_match, dev); + if (match) + pdata = match->data; + else + return -ENODEV; + + d = devm_kzalloc(dev, sizeof(*d), GFP_KERNEL); + if (!d) + return -ENOMEM; + d->dev = dev; + d->np = node; + d->c = pdata; + dev_set_drvdata(d->dev, d); + spin_lock_init(&d->lock); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENODEV; + d->pa = res->start; + + d->iobase = devm_ioremap_resource(dev, res); + if (IS_ERR(d->iobase)) { + dev_err(dev, "could not get IO base: %li\n", + PTR_ERR(d->iobase)); + return PTR_ERR(d->iobase); + } + + err = ti_adpll_init_registers(d); + if (err) + return err; + + err = ti_adpll_init_inputs(d); + if (err) + return err; + + d->clocks = devm_kcalloc(d->dev, + TI_ADPLL_NR_CLOCKS, + sizeof(struct ti_adpll_clock), + GFP_KERNEL); + if (!d->clocks) + return -ENOMEM; + + err = ti_adpll_init_dco(d); + if (err) { + dev_err(dev, "could not register dco: %i\n", err); + goto free; + } + + err = ti_adpll_init_children_adpll_s(d); + if (err) + goto free; + err = ti_adpll_init_children_adpll_lj(d); + if (err) + goto free; + + err = of_clk_add_provider(d->np, of_clk_src_onecell_get, &d->outputs); + if (err) + goto free; + + return 0; + +free: + WARN_ON(1); + ti_adpll_free_resources(d); + + return err; +} + +static int ti_adpll_remove(struct platform_device *pdev) +{ + struct ti_adpll_data *d = dev_get_drvdata(&pdev->dev); + + ti_adpll_free_resources(d); + + return 0; +} + +static struct platform_driver ti_adpll_driver = { + .driver = { + .name = "ti-adpll", + .of_match_table = ti_adpll_match, + }, + .probe = ti_adpll_probe, + .remove = ti_adpll_remove, +}; + +static int __init ti_adpll_init(void) +{ + return platform_driver_register(&ti_adpll_driver); +} +core_initcall(ti_adpll_init); + +static void __exit ti_adpll_exit(void) +{ + platform_driver_unregister(&ti_adpll_driver); +} +module_exit(ti_adpll_exit); + +MODULE_DESCRIPTION("Clock driver for dm814x ADPLL"); +MODULE_ALIAS("platform:dm814-adpll-clock"); +MODULE_AUTHOR("Tony LIndgren <tony@atomide.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/clk/ti/apll.c b/drivers/clk/ti/apll.c new file mode 100644 index 000000000..61c126a5d --- /dev/null +++ b/drivers/clk/ti/apll.c @@ -0,0 +1,417 @@ +/* + * OMAP APLL clock support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * J Keerthy <j-keerthy@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/err.h> +#include <linux/string.h> +#include <linux/log2.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> +#include <linux/delay.h> + +#include "clock.h" + +#define APLL_FORCE_LOCK 0x1 +#define APLL_AUTO_IDLE 0x2 +#define MAX_APLL_WAIT_TRIES 1000000 + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +static int dra7_apll_enable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + int r = 0, i = 0; + struct dpll_data *ad; + const char *clk_name; + u8 state = 1; + u32 v; + + ad = clk->dpll_data; + if (!ad) + return -EINVAL; + + clk_name = clk_hw_get_name(&clk->hw); + + state <<= __ffs(ad->idlest_mask); + + /* Check is already locked */ + v = ti_clk_ll_ops->clk_readl(&ad->idlest_reg); + + if ((v & ad->idlest_mask) == state) + return r; + + v = ti_clk_ll_ops->clk_readl(&ad->control_reg); + v &= ~ad->enable_mask; + v |= APLL_FORCE_LOCK << __ffs(ad->enable_mask); + ti_clk_ll_ops->clk_writel(v, &ad->control_reg); + + state <<= __ffs(ad->idlest_mask); + + while (1) { + v = ti_clk_ll_ops->clk_readl(&ad->idlest_reg); + if ((v & ad->idlest_mask) == state) + break; + if (i > MAX_APLL_WAIT_TRIES) + break; + i++; + udelay(1); + } + + if (i == MAX_APLL_WAIT_TRIES) { + pr_warn("clock: %s failed transition to '%s'\n", + clk_name, (state) ? "locked" : "bypassed"); + r = -EBUSY; + } else + pr_debug("clock: %s transition to '%s' in %d loops\n", + clk_name, (state) ? "locked" : "bypassed", i); + + return r; +} + +static void dra7_apll_disable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *ad; + u8 state = 1; + u32 v; + + ad = clk->dpll_data; + + state <<= __ffs(ad->idlest_mask); + + v = ti_clk_ll_ops->clk_readl(&ad->control_reg); + v &= ~ad->enable_mask; + v |= APLL_AUTO_IDLE << __ffs(ad->enable_mask); + ti_clk_ll_ops->clk_writel(v, &ad->control_reg); +} + +static int dra7_apll_is_enabled(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *ad; + u32 v; + + ad = clk->dpll_data; + + v = ti_clk_ll_ops->clk_readl(&ad->control_reg); + v &= ad->enable_mask; + + v >>= __ffs(ad->enable_mask); + + return v == APLL_AUTO_IDLE ? 0 : 1; +} + +static u8 dra7_init_apll_parent(struct clk_hw *hw) +{ + return 0; +} + +static const struct clk_ops apll_ck_ops = { + .enable = &dra7_apll_enable, + .disable = &dra7_apll_disable, + .is_enabled = &dra7_apll_is_enabled, + .get_parent = &dra7_init_apll_parent, +}; + +static void __init omap_clk_register_apll(void *user, + struct device_node *node) +{ + struct clk_hw *hw = user; + struct clk_hw_omap *clk_hw = to_clk_hw_omap(hw); + struct dpll_data *ad = clk_hw->dpll_data; + struct clk *clk; + + clk = of_clk_get(node, 0); + if (IS_ERR(clk)) { + pr_debug("clk-ref for %s not ready, retry\n", + node->name); + if (!ti_clk_retry_init(node, hw, omap_clk_register_apll)) + return; + + goto cleanup; + } + + ad->clk_ref = __clk_get_hw(clk); + + clk = of_clk_get(node, 1); + if (IS_ERR(clk)) { + pr_debug("clk-bypass for %s not ready, retry\n", + node->name); + if (!ti_clk_retry_init(node, hw, omap_clk_register_apll)) + return; + + goto cleanup; + } + + ad->clk_bypass = __clk_get_hw(clk); + + clk = ti_clk_register(NULL, &clk_hw->hw, node->name); + if (!IS_ERR(clk)) { + of_clk_add_provider(node, of_clk_src_simple_get, clk); + kfree(clk_hw->hw.init->parent_names); + kfree(clk_hw->hw.init); + return; + } + +cleanup: + kfree(clk_hw->dpll_data); + kfree(clk_hw->hw.init->parent_names); + kfree(clk_hw->hw.init); + kfree(clk_hw); +} + +static void __init of_dra7_apll_setup(struct device_node *node) +{ + struct dpll_data *ad = NULL; + struct clk_hw_omap *clk_hw = NULL; + struct clk_init_data *init = NULL; + const char **parent_names = NULL; + int ret; + + ad = kzalloc(sizeof(*ad), GFP_KERNEL); + clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL); + init = kzalloc(sizeof(*init), GFP_KERNEL); + if (!ad || !clk_hw || !init) + goto cleanup; + + clk_hw->dpll_data = ad; + clk_hw->hw.init = init; + + init->name = node->name; + init->ops = &apll_ck_ops; + + init->num_parents = of_clk_get_parent_count(node); + if (init->num_parents < 1) { + pr_err("dra7 apll %s must have parent(s)\n", node->name); + goto cleanup; + } + + parent_names = kcalloc(init->num_parents, sizeof(char *), GFP_KERNEL); + if (!parent_names) + goto cleanup; + + of_clk_parent_fill(node, parent_names, init->num_parents); + + init->parent_names = parent_names; + + ret = ti_clk_get_reg_addr(node, 0, &ad->control_reg); + ret |= ti_clk_get_reg_addr(node, 1, &ad->idlest_reg); + + if (ret) + goto cleanup; + + ad->idlest_mask = 0x1; + ad->enable_mask = 0x3; + + omap_clk_register_apll(&clk_hw->hw, node); + return; + +cleanup: + kfree(parent_names); + kfree(ad); + kfree(clk_hw); + kfree(init); +} +CLK_OF_DECLARE(dra7_apll_clock, "ti,dra7-apll-clock", of_dra7_apll_setup); + +#define OMAP2_EN_APLL_LOCKED 0x3 +#define OMAP2_EN_APLL_STOPPED 0x0 + +static int omap2_apll_is_enabled(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *ad = clk->dpll_data; + u32 v; + + v = ti_clk_ll_ops->clk_readl(&ad->control_reg); + v &= ad->enable_mask; + + v >>= __ffs(ad->enable_mask); + + return v == OMAP2_EN_APLL_LOCKED ? 1 : 0; +} + +static unsigned long omap2_apll_recalc(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + + if (omap2_apll_is_enabled(hw)) + return clk->fixed_rate; + + return 0; +} + +static int omap2_apll_enable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *ad = clk->dpll_data; + u32 v; + int i = 0; + + v = ti_clk_ll_ops->clk_readl(&ad->control_reg); + v &= ~ad->enable_mask; + v |= OMAP2_EN_APLL_LOCKED << __ffs(ad->enable_mask); + ti_clk_ll_ops->clk_writel(v, &ad->control_reg); + + while (1) { + v = ti_clk_ll_ops->clk_readl(&ad->idlest_reg); + if (v & ad->idlest_mask) + break; + if (i > MAX_APLL_WAIT_TRIES) + break; + i++; + udelay(1); + } + + if (i == MAX_APLL_WAIT_TRIES) { + pr_warn("%s failed to transition to locked\n", + clk_hw_get_name(&clk->hw)); + return -EBUSY; + } + + return 0; +} + +static void omap2_apll_disable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *ad = clk->dpll_data; + u32 v; + + v = ti_clk_ll_ops->clk_readl(&ad->control_reg); + v &= ~ad->enable_mask; + v |= OMAP2_EN_APLL_STOPPED << __ffs(ad->enable_mask); + ti_clk_ll_ops->clk_writel(v, &ad->control_reg); +} + +static const struct clk_ops omap2_apll_ops = { + .enable = &omap2_apll_enable, + .disable = &omap2_apll_disable, + .is_enabled = &omap2_apll_is_enabled, + .recalc_rate = &omap2_apll_recalc, +}; + +static void omap2_apll_set_autoidle(struct clk_hw_omap *clk, u32 val) +{ + struct dpll_data *ad = clk->dpll_data; + u32 v; + + v = ti_clk_ll_ops->clk_readl(&ad->autoidle_reg); + v &= ~ad->autoidle_mask; + v |= val << __ffs(ad->autoidle_mask); + ti_clk_ll_ops->clk_writel(v, &ad->control_reg); +} + +#define OMAP2_APLL_AUTOIDLE_LOW_POWER_STOP 0x3 +#define OMAP2_APLL_AUTOIDLE_DISABLE 0x0 + +static void omap2_apll_allow_idle(struct clk_hw_omap *clk) +{ + omap2_apll_set_autoidle(clk, OMAP2_APLL_AUTOIDLE_LOW_POWER_STOP); +} + +static void omap2_apll_deny_idle(struct clk_hw_omap *clk) +{ + omap2_apll_set_autoidle(clk, OMAP2_APLL_AUTOIDLE_DISABLE); +} + +static const struct clk_hw_omap_ops omap2_apll_hwops = { + .allow_idle = &omap2_apll_allow_idle, + .deny_idle = &omap2_apll_deny_idle, +}; + +static void __init of_omap2_apll_setup(struct device_node *node) +{ + struct dpll_data *ad = NULL; + struct clk_hw_omap *clk_hw = NULL; + struct clk_init_data *init = NULL; + struct clk *clk; + const char *parent_name; + u32 val; + int ret; + + ad = kzalloc(sizeof(*ad), GFP_KERNEL); + clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL); + init = kzalloc(sizeof(*init), GFP_KERNEL); + + if (!ad || !clk_hw || !init) + goto cleanup; + + clk_hw->dpll_data = ad; + clk_hw->hw.init = init; + init->ops = &omap2_apll_ops; + init->name = node->name; + clk_hw->ops = &omap2_apll_hwops; + + init->num_parents = of_clk_get_parent_count(node); + if (init->num_parents != 1) { + pr_err("%s must have one parent\n", node->name); + goto cleanup; + } + + parent_name = of_clk_get_parent_name(node, 0); + init->parent_names = &parent_name; + + if (of_property_read_u32(node, "ti,clock-frequency", &val)) { + pr_err("%s missing clock-frequency\n", node->name); + goto cleanup; + } + clk_hw->fixed_rate = val; + + if (of_property_read_u32(node, "ti,bit-shift", &val)) { + pr_err("%s missing bit-shift\n", node->name); + goto cleanup; + } + + clk_hw->enable_bit = val; + ad->enable_mask = 0x3 << val; + ad->autoidle_mask = 0x3 << val; + + if (of_property_read_u32(node, "ti,idlest-shift", &val)) { + pr_err("%s missing idlest-shift\n", node->name); + goto cleanup; + } + + ad->idlest_mask = 1 << val; + + ret = ti_clk_get_reg_addr(node, 0, &ad->control_reg); + ret |= ti_clk_get_reg_addr(node, 1, &ad->autoidle_reg); + ret |= ti_clk_get_reg_addr(node, 2, &ad->idlest_reg); + + if (ret) + goto cleanup; + + clk = clk_register(NULL, &clk_hw->hw); + if (!IS_ERR(clk)) { + of_clk_add_provider(node, of_clk_src_simple_get, clk); + kfree(init); + return; + } +cleanup: + kfree(ad); + kfree(clk_hw); + kfree(init); +} +CLK_OF_DECLARE(omap2_apll_clock, "ti,omap2-apll-clock", + of_omap2_apll_setup); diff --git a/drivers/clk/ti/autoidle.c b/drivers/clk/ti/autoidle.c new file mode 100644 index 000000000..7bb9afbe4 --- /dev/null +++ b/drivers/clk/ti/autoidle.c @@ -0,0 +1,232 @@ +/* + * TI clock autoidle support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +struct clk_ti_autoidle { + struct clk_omap_reg reg; + u8 shift; + u8 flags; + const char *name; + struct list_head node; +}; + +#define AUTOIDLE_LOW 0x1 + +static LIST_HEAD(autoidle_clks); +static LIST_HEAD(clk_hw_omap_clocks); + +/** + * omap2_clk_deny_idle - disable autoidle on an OMAP clock + * @clk: struct clk * to disable autoidle for + * + * Disable autoidle on an OMAP clock. + */ +int omap2_clk_deny_idle(struct clk *clk) +{ + struct clk_hw_omap *c; + + c = to_clk_hw_omap(__clk_get_hw(clk)); + if (c->ops && c->ops->deny_idle) + c->ops->deny_idle(c); + return 0; +} + +/** + * omap2_clk_allow_idle - enable autoidle on an OMAP clock + * @clk: struct clk * to enable autoidle for + * + * Enable autoidle on an OMAP clock. + */ +int omap2_clk_allow_idle(struct clk *clk) +{ + struct clk_hw_omap *c; + + c = to_clk_hw_omap(__clk_get_hw(clk)); + if (c->ops && c->ops->allow_idle) + c->ops->allow_idle(c); + return 0; +} + +static void _allow_autoidle(struct clk_ti_autoidle *clk) +{ + u32 val; + + val = ti_clk_ll_ops->clk_readl(&clk->reg); + + if (clk->flags & AUTOIDLE_LOW) + val &= ~(1 << clk->shift); + else + val |= (1 << clk->shift); + + ti_clk_ll_ops->clk_writel(val, &clk->reg); +} + +static void _deny_autoidle(struct clk_ti_autoidle *clk) +{ + u32 val; + + val = ti_clk_ll_ops->clk_readl(&clk->reg); + + if (clk->flags & AUTOIDLE_LOW) + val |= (1 << clk->shift); + else + val &= ~(1 << clk->shift); + + ti_clk_ll_ops->clk_writel(val, &clk->reg); +} + +/** + * _clk_generic_allow_autoidle_all - enable autoidle for all clocks + * + * Enables hardware autoidle for all registered DT clocks, which have + * the feature. + */ +static void _clk_generic_allow_autoidle_all(void) +{ + struct clk_ti_autoidle *c; + + list_for_each_entry(c, &autoidle_clks, node) + _allow_autoidle(c); +} + +/** + * _clk_generic_deny_autoidle_all - disable autoidle for all clocks + * + * Disables hardware autoidle for all registered DT clocks, which have + * the feature. + */ +static void _clk_generic_deny_autoidle_all(void) +{ + struct clk_ti_autoidle *c; + + list_for_each_entry(c, &autoidle_clks, node) + _deny_autoidle(c); +} + +/** + * of_ti_clk_autoidle_setup - sets up hardware autoidle for a clock + * @node: pointer to the clock device node + * + * Checks if a clock has hardware autoidle support or not (check + * for presence of 'ti,autoidle-shift' property in the device tree + * node) and sets up the hardware autoidle feature for the clock + * if available. If autoidle is available, the clock is also added + * to the autoidle list for later processing. Returns 0 on success, + * negative error value on failure. + */ +int __init of_ti_clk_autoidle_setup(struct device_node *node) +{ + u32 shift; + struct clk_ti_autoidle *clk; + int ret; + + /* Check if this clock has autoidle support or not */ + if (of_property_read_u32(node, "ti,autoidle-shift", &shift)) + return 0; + + clk = kzalloc(sizeof(*clk), GFP_KERNEL); + + if (!clk) + return -ENOMEM; + + clk->shift = shift; + clk->name = node->name; + ret = ti_clk_get_reg_addr(node, 0, &clk->reg); + if (ret) { + kfree(clk); + return ret; + } + + if (of_property_read_bool(node, "ti,invert-autoidle-bit")) + clk->flags |= AUTOIDLE_LOW; + + list_add(&clk->node, &autoidle_clks); + + return 0; +} + +/** + * omap2_init_clk_hw_omap_clocks - initialize an OMAP clock + * @hw: struct clk_hw * to initialize + * + * Add an OMAP clock @clk to the internal list of OMAP clocks. Used + * temporarily for autoidle handling, until this support can be + * integrated into the common clock framework code in some way. No + * return value. + */ +void omap2_init_clk_hw_omap_clocks(struct clk_hw *hw) +{ + struct clk_hw_omap *c; + + if (clk_hw_get_flags(hw) & CLK_IS_BASIC) + return; + + c = to_clk_hw_omap(hw); + list_add(&c->node, &clk_hw_omap_clocks); +} + +/** + * omap2_clk_enable_autoidle_all - enable autoidle on all OMAP clocks that + * support it + * + * Enable clock autoidle on all OMAP clocks that have allow_idle + * function pointers associated with them. This function is intended + * to be temporary until support for this is added to the common clock + * code. Returns 0. + */ +int omap2_clk_enable_autoidle_all(void) +{ + struct clk_hw_omap *c; + + list_for_each_entry(c, &clk_hw_omap_clocks, node) + if (c->ops && c->ops->allow_idle) + c->ops->allow_idle(c); + + _clk_generic_allow_autoidle_all(); + + return 0; +} + +/** + * omap2_clk_disable_autoidle_all - disable autoidle on all OMAP clocks that + * support it + * + * Disable clock autoidle on all OMAP clocks that have allow_idle + * function pointers associated with them. This function is intended + * to be temporary until support for this is added to the common clock + * code. Returns 0. + */ +int omap2_clk_disable_autoidle_all(void) +{ + struct clk_hw_omap *c; + + list_for_each_entry(c, &clk_hw_omap_clocks, node) + if (c->ops && c->ops->deny_idle) + c->ops->deny_idle(c); + + _clk_generic_deny_autoidle_all(); + + return 0; +} diff --git a/drivers/clk/ti/clk-2xxx.c b/drivers/clk/ti/clk-2xxx.c new file mode 100644 index 000000000..657c4fe07 --- /dev/null +++ b/drivers/clk/ti/clk-2xxx.c @@ -0,0 +1,258 @@ +/* + * OMAP2 Clock init + * + * Copyright (C) 2013 Texas Instruments, Inc + * Tero Kristo (t-kristo@ti.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/clk.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +static struct ti_dt_clk omap2xxx_clks[] = { + DT_CLK(NULL, "func_32k_ck", "func_32k_ck"), + DT_CLK(NULL, "secure_32k_ck", "secure_32k_ck"), + DT_CLK(NULL, "virt_12m_ck", "virt_12m_ck"), + DT_CLK(NULL, "virt_13m_ck", "virt_13m_ck"), + DT_CLK(NULL, "virt_19200000_ck", "virt_19200000_ck"), + DT_CLK(NULL, "virt_26m_ck", "virt_26m_ck"), + DT_CLK(NULL, "aplls_clkin_ck", "aplls_clkin_ck"), + DT_CLK(NULL, "aplls_clkin_x2_ck", "aplls_clkin_x2_ck"), + DT_CLK(NULL, "osc_ck", "osc_ck"), + DT_CLK(NULL, "sys_ck", "sys_ck"), + DT_CLK(NULL, "alt_ck", "alt_ck"), + DT_CLK(NULL, "mcbsp_clks", "mcbsp_clks"), + DT_CLK(NULL, "dpll_ck", "dpll_ck"), + DT_CLK(NULL, "apll96_ck", "apll96_ck"), + DT_CLK(NULL, "apll54_ck", "apll54_ck"), + DT_CLK(NULL, "func_54m_ck", "func_54m_ck"), + DT_CLK(NULL, "core_ck", "core_ck"), + DT_CLK(NULL, "func_96m_ck", "func_96m_ck"), + DT_CLK(NULL, "func_48m_ck", "func_48m_ck"), + DT_CLK(NULL, "func_12m_ck", "func_12m_ck"), + DT_CLK(NULL, "sys_clkout_src", "sys_clkout_src"), + DT_CLK(NULL, "sys_clkout", "sys_clkout"), + DT_CLK(NULL, "emul_ck", "emul_ck"), + DT_CLK(NULL, "mpu_ck", "mpu_ck"), + DT_CLK(NULL, "dsp_fck", "dsp_fck"), + DT_CLK(NULL, "gfx_3d_fck", "gfx_3d_fck"), + DT_CLK(NULL, "gfx_2d_fck", "gfx_2d_fck"), + DT_CLK(NULL, "gfx_ick", "gfx_ick"), + DT_CLK("omapdss_dss", "ick", "dss_ick"), + DT_CLK(NULL, "dss_ick", "dss_ick"), + DT_CLK(NULL, "dss1_fck", "dss1_fck"), + DT_CLK(NULL, "dss2_fck", "dss2_fck"), + DT_CLK(NULL, "dss_54m_fck", "dss_54m_fck"), + DT_CLK(NULL, "core_l3_ck", "core_l3_ck"), + DT_CLK(NULL, "ssi_fck", "ssi_ssr_sst_fck"), + DT_CLK(NULL, "usb_l4_ick", "usb_l4_ick"), + DT_CLK(NULL, "l4_ck", "l4_ck"), + DT_CLK(NULL, "ssi_l4_ick", "ssi_l4_ick"), + DT_CLK(NULL, "gpt1_ick", "gpt1_ick"), + DT_CLK(NULL, "gpt1_fck", "gpt1_fck"), + DT_CLK(NULL, "gpt2_ick", "gpt2_ick"), + DT_CLK(NULL, "gpt2_fck", "gpt2_fck"), + DT_CLK(NULL, "gpt3_ick", "gpt3_ick"), + DT_CLK(NULL, "gpt3_fck", "gpt3_fck"), + DT_CLK(NULL, "gpt4_ick", "gpt4_ick"), + DT_CLK(NULL, "gpt4_fck", "gpt4_fck"), + DT_CLK(NULL, "gpt5_ick", "gpt5_ick"), + DT_CLK(NULL, "gpt5_fck", "gpt5_fck"), + DT_CLK(NULL, "gpt6_ick", "gpt6_ick"), + DT_CLK(NULL, "gpt6_fck", "gpt6_fck"), + DT_CLK(NULL, "gpt7_ick", "gpt7_ick"), + DT_CLK(NULL, "gpt7_fck", "gpt7_fck"), + DT_CLK(NULL, "gpt8_ick", "gpt8_ick"), + DT_CLK(NULL, "gpt8_fck", "gpt8_fck"), + DT_CLK(NULL, "gpt9_ick", "gpt9_ick"), + DT_CLK(NULL, "gpt9_fck", "gpt9_fck"), + DT_CLK(NULL, "gpt10_ick", "gpt10_ick"), + DT_CLK(NULL, "gpt10_fck", "gpt10_fck"), + DT_CLK(NULL, "gpt11_ick", "gpt11_ick"), + DT_CLK(NULL, "gpt11_fck", "gpt11_fck"), + DT_CLK(NULL, "gpt12_ick", "gpt12_ick"), + DT_CLK(NULL, "gpt12_fck", "gpt12_fck"), + DT_CLK("omap-mcbsp.1", "ick", "mcbsp1_ick"), + DT_CLK(NULL, "mcbsp1_ick", "mcbsp1_ick"), + DT_CLK(NULL, "mcbsp1_fck", "mcbsp1_fck"), + DT_CLK("omap-mcbsp.2", "ick", "mcbsp2_ick"), + DT_CLK(NULL, "mcbsp2_ick", "mcbsp2_ick"), + DT_CLK(NULL, "mcbsp2_fck", "mcbsp2_fck"), + DT_CLK("omap2_mcspi.1", "ick", "mcspi1_ick"), + DT_CLK(NULL, "mcspi1_ick", "mcspi1_ick"), + DT_CLK(NULL, "mcspi1_fck", "mcspi1_fck"), + DT_CLK("omap2_mcspi.2", "ick", "mcspi2_ick"), + DT_CLK(NULL, "mcspi2_ick", "mcspi2_ick"), + DT_CLK(NULL, "mcspi2_fck", "mcspi2_fck"), + DT_CLK(NULL, "uart1_ick", "uart1_ick"), + DT_CLK(NULL, "uart1_fck", "uart1_fck"), + DT_CLK(NULL, "uart2_ick", "uart2_ick"), + DT_CLK(NULL, "uart2_fck", "uart2_fck"), + DT_CLK(NULL, "uart3_ick", "uart3_ick"), + DT_CLK(NULL, "uart3_fck", "uart3_fck"), + DT_CLK(NULL, "gpios_ick", "gpios_ick"), + DT_CLK(NULL, "gpios_fck", "gpios_fck"), + DT_CLK("omap_wdt", "ick", "mpu_wdt_ick"), + DT_CLK(NULL, "mpu_wdt_ick", "mpu_wdt_ick"), + DT_CLK(NULL, "mpu_wdt_fck", "mpu_wdt_fck"), + DT_CLK(NULL, "sync_32k_ick", "sync_32k_ick"), + DT_CLK(NULL, "wdt1_ick", "wdt1_ick"), + DT_CLK(NULL, "omapctrl_ick", "omapctrl_ick"), + DT_CLK("omap24xxcam", "fck", "cam_fck"), + DT_CLK(NULL, "cam_fck", "cam_fck"), + DT_CLK("omap24xxcam", "ick", "cam_ick"), + DT_CLK(NULL, "cam_ick", "cam_ick"), + DT_CLK(NULL, "mailboxes_ick", "mailboxes_ick"), + DT_CLK(NULL, "wdt4_ick", "wdt4_ick"), + DT_CLK(NULL, "wdt4_fck", "wdt4_fck"), + DT_CLK(NULL, "mspro_ick", "mspro_ick"), + DT_CLK(NULL, "mspro_fck", "mspro_fck"), + DT_CLK(NULL, "fac_ick", "fac_ick"), + DT_CLK(NULL, "fac_fck", "fac_fck"), + DT_CLK("omap_hdq.0", "ick", "hdq_ick"), + DT_CLK(NULL, "hdq_ick", "hdq_ick"), + DT_CLK("omap_hdq.0", "fck", "hdq_fck"), + DT_CLK(NULL, "hdq_fck", "hdq_fck"), + DT_CLK("omap_i2c.1", "ick", "i2c1_ick"), + DT_CLK(NULL, "i2c1_ick", "i2c1_ick"), + DT_CLK("omap_i2c.2", "ick", "i2c2_ick"), + DT_CLK(NULL, "i2c2_ick", "i2c2_ick"), + DT_CLK(NULL, "gpmc_fck", "gpmc_fck"), + DT_CLK(NULL, "sdma_fck", "sdma_fck"), + DT_CLK(NULL, "sdma_ick", "sdma_ick"), + DT_CLK(NULL, "sdrc_ick", "sdrc_ick"), + DT_CLK(NULL, "des_ick", "des_ick"), + DT_CLK("omap-sham", "ick", "sha_ick"), + DT_CLK(NULL, "sha_ick", "sha_ick"), + DT_CLK("omap_rng", "ick", "rng_ick"), + DT_CLK(NULL, "rng_ick", "rng_ick"), + DT_CLK("omap-aes", "ick", "aes_ick"), + DT_CLK(NULL, "aes_ick", "aes_ick"), + DT_CLK(NULL, "pka_ick", "pka_ick"), + DT_CLK(NULL, "usb_fck", "usb_fck"), + DT_CLK(NULL, "timer_32k_ck", "func_32k_ck"), + DT_CLK(NULL, "timer_sys_ck", "sys_ck"), + DT_CLK(NULL, "timer_ext_ck", "alt_ck"), + { .node_name = NULL }, +}; + +static struct ti_dt_clk omap2420_clks[] = { + DT_CLK(NULL, "sys_clkout2_src", "sys_clkout2_src"), + DT_CLK(NULL, "sys_clkout2", "sys_clkout2"), + DT_CLK(NULL, "dsp_ick", "dsp_ick"), + DT_CLK(NULL, "iva1_ifck", "iva1_ifck"), + DT_CLK(NULL, "iva1_mpu_int_ifck", "iva1_mpu_int_ifck"), + DT_CLK(NULL, "wdt3_ick", "wdt3_ick"), + DT_CLK(NULL, "wdt3_fck", "wdt3_fck"), + DT_CLK("mmci-omap.0", "ick", "mmc_ick"), + DT_CLK(NULL, "mmc_ick", "mmc_ick"), + DT_CLK("mmci-omap.0", "fck", "mmc_fck"), + DT_CLK(NULL, "mmc_fck", "mmc_fck"), + DT_CLK(NULL, "eac_ick", "eac_ick"), + DT_CLK(NULL, "eac_fck", "eac_fck"), + DT_CLK(NULL, "i2c1_fck", "i2c1_fck"), + DT_CLK(NULL, "i2c2_fck", "i2c2_fck"), + DT_CLK(NULL, "vlynq_ick", "vlynq_ick"), + DT_CLK(NULL, "vlynq_fck", "vlynq_fck"), + DT_CLK("musb-hdrc", "fck", "osc_ck"), + { .node_name = NULL }, +}; + +static struct ti_dt_clk omap2430_clks[] = { + DT_CLK("twl", "fck", "osc_ck"), + DT_CLK(NULL, "iva2_1_ick", "iva2_1_ick"), + DT_CLK(NULL, "mdm_ick", "mdm_ick"), + DT_CLK(NULL, "mdm_osc_ck", "mdm_osc_ck"), + DT_CLK("omap-mcbsp.3", "ick", "mcbsp3_ick"), + DT_CLK(NULL, "mcbsp3_ick", "mcbsp3_ick"), + DT_CLK(NULL, "mcbsp3_fck", "mcbsp3_fck"), + DT_CLK("omap-mcbsp.4", "ick", "mcbsp4_ick"), + DT_CLK(NULL, "mcbsp4_ick", "mcbsp4_ick"), + DT_CLK(NULL, "mcbsp4_fck", "mcbsp4_fck"), + DT_CLK("omap-mcbsp.5", "ick", "mcbsp5_ick"), + DT_CLK(NULL, "mcbsp5_ick", "mcbsp5_ick"), + DT_CLK(NULL, "mcbsp5_fck", "mcbsp5_fck"), + DT_CLK("omap2_mcspi.3", "ick", "mcspi3_ick"), + DT_CLK(NULL, "mcspi3_ick", "mcspi3_ick"), + DT_CLK(NULL, "mcspi3_fck", "mcspi3_fck"), + DT_CLK(NULL, "icr_ick", "icr_ick"), + DT_CLK(NULL, "i2chs1_fck", "i2chs1_fck"), + DT_CLK(NULL, "i2chs2_fck", "i2chs2_fck"), + DT_CLK("musb-omap2430", "ick", "usbhs_ick"), + DT_CLK(NULL, "usbhs_ick", "usbhs_ick"), + DT_CLK("omap_hsmmc.0", "ick", "mmchs1_ick"), + DT_CLK(NULL, "mmchs1_ick", "mmchs1_ick"), + DT_CLK(NULL, "mmchs1_fck", "mmchs1_fck"), + DT_CLK("omap_hsmmc.1", "ick", "mmchs2_ick"), + DT_CLK(NULL, "mmchs2_ick", "mmchs2_ick"), + DT_CLK(NULL, "mmchs2_fck", "mmchs2_fck"), + DT_CLK(NULL, "gpio5_ick", "gpio5_ick"), + DT_CLK(NULL, "gpio5_fck", "gpio5_fck"), + DT_CLK(NULL, "mdm_intc_ick", "mdm_intc_ick"), + DT_CLK("omap_hsmmc.0", "mmchsdb_fck", "mmchsdb1_fck"), + DT_CLK(NULL, "mmchsdb1_fck", "mmchsdb1_fck"), + DT_CLK("omap_hsmmc.1", "mmchsdb_fck", "mmchsdb2_fck"), + DT_CLK(NULL, "mmchsdb2_fck", "mmchsdb2_fck"), + { .node_name = NULL }, +}; + +static const char *enable_init_clks[] = { + "apll96_ck", + "apll54_ck", + "sync_32k_ick", + "omapctrl_ick", + "gpmc_fck", + "sdrc_ick", +}; + +enum { + OMAP2_SOC_OMAP2420, + OMAP2_SOC_OMAP2430, +}; + +static int __init omap2xxx_dt_clk_init(int soc_type) +{ + ti_dt_clocks_register(omap2xxx_clks); + + if (soc_type == OMAP2_SOC_OMAP2420) + ti_dt_clocks_register(omap2420_clks); + else + ti_dt_clocks_register(omap2430_clks); + + omap2xxx_clkt_vps_init(); + + omap2_clk_disable_autoidle_all(); + + omap2_clk_enable_init_clocks(enable_init_clks, + ARRAY_SIZE(enable_init_clks)); + + pr_info("Clocking rate (Crystal/DPLL/MPU): %ld.%01ld/%ld/%ld MHz\n", + (clk_get_rate(clk_get_sys(NULL, "sys_ck")) / 1000000), + (clk_get_rate(clk_get_sys(NULL, "sys_ck")) / 100000) % 10, + (clk_get_rate(clk_get_sys(NULL, "dpll_ck")) / 1000000), + (clk_get_rate(clk_get_sys(NULL, "mpu_ck")) / 1000000)); + + return 0; +} + +int __init omap2420_dt_clk_init(void) +{ + return omap2xxx_dt_clk_init(OMAP2_SOC_OMAP2420); +} + +int __init omap2430_dt_clk_init(void) +{ + return omap2xxx_dt_clk_init(OMAP2_SOC_OMAP2430); +} diff --git a/drivers/clk/ti/clk-33xx.c b/drivers/clk/ti/clk-33xx.c new file mode 100644 index 000000000..12e0a2d19 --- /dev/null +++ b/drivers/clk/ti/clk-33xx.c @@ -0,0 +1,271 @@ +/* + * AM33XX Clock init + * + * Copyright (C) 2013 Texas Instruments, Inc + * Tero Kristo (t-kristo@ti.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clk/ti.h> +#include <dt-bindings/clock/am3.h> + +#include "clock.h" + +static const char * const am3_gpio1_dbclk_parents[] __initconst = { + "l4_per_cm:clk:0138:0", + NULL, +}; + +static const struct omap_clkctrl_bit_data am3_gpio2_bit_data[] __initconst = { + { 18, TI_CLK_GATE, am3_gpio1_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data am3_gpio3_bit_data[] __initconst = { + { 18, TI_CLK_GATE, am3_gpio1_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data am3_gpio4_bit_data[] __initconst = { + { 18, TI_CLK_GATE, am3_gpio1_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am3_l4_per_clkctrl_regs[] __initconst = { + { AM3_CPGMAC0_CLKCTRL, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk", "cpsw_125mhz_clkdm" }, + { AM3_LCDC_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_SET_RATE_PARENT, "lcd_gclk", "lcdc_clkdm" }, + { AM3_USB_OTG_HS_CLKCTRL, NULL, CLKF_SW_SUP, "usbotg_fck", "l3s_clkdm" }, + { AM3_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM3_EMIF_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_ddr_m2_div2_ck", "l3_clkdm" }, + { AM3_OCMCRAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM3_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk", "l3s_clkdm" }, + { AM3_MCASP0_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp0_fck", "l3s_clkdm" }, + { AM3_UART6_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM3_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" }, + { AM3_ELM_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM3_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM3_SPI0_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM3_SPI1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM3_L4_LS_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_MCASP1_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp1_fck", "l3s_clkdm" }, + { AM3_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM3_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM3_UART4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM3_UART5_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM3_TIMER7_CLKCTRL, NULL, CLKF_SW_SUP, "timer7_fck" }, + { AM3_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "timer2_fck" }, + { AM3_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "timer3_fck" }, + { AM3_TIMER4_CLKCTRL, NULL, CLKF_SW_SUP, "timer4_fck" }, + { AM3_RNG_CLKCTRL, NULL, CLKF_SW_SUP, "rng_fck" }, + { AM3_AES_CLKCTRL, NULL, CLKF_SW_SUP, "aes0_fck", "l3_clkdm" }, + { AM3_SHAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM3_GPIO2_CLKCTRL, am3_gpio2_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_GPIO3_CLKCTRL, am3_gpio3_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_GPIO4_CLKCTRL, am3_gpio4_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM3_D_CAN0_CLKCTRL, NULL, CLKF_SW_SUP, "dcan0_fck" }, + { AM3_D_CAN1_CLKCTRL, NULL, CLKF_SW_SUP, "dcan1_fck" }, + { AM3_EPWMSS1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_EPWMSS0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_EPWMSS2_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_L3_INSTR_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM3_L3_MAIN_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM3_PRUSS_CLKCTRL, NULL, CLKF_SW_SUP, "pruss_ocp_gclk", "pruss_ocp_clkdm" }, + { AM3_TIMER5_CLKCTRL, NULL, CLKF_SW_SUP, "timer5_fck" }, + { AM3_TIMER6_CLKCTRL, NULL, CLKF_SW_SUP, "timer6_fck" }, + { AM3_MMC2_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" }, + { AM3_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk", "l3s_clkdm" }, + { AM3_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM3_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM3_SPINLOCK_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_MAILBOX_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_L4_HS_CLKCTRL, NULL, CLKF_SW_SUP, "l4hs_gclk", "l4hs_clkdm" }, + { AM3_OCPWP_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM3_CLKDIV32K_CLKCTRL, NULL, CLKF_SW_SUP, "clkdiv32k_ck", "clk_24mhz_clkdm" }, + { 0 }, +}; + +static const char * const am3_gpio0_dbclk_parents[] __initconst = { + "gpio0_dbclk_mux_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data am3_gpio1_bit_data[] __initconst = { + { 18, TI_CLK_GATE, am3_gpio0_dbclk_parents, NULL }, + { 0 }, +}; + +static const char * const am3_dbg_sysclk_ck_parents[] __initconst = { + "sys_clkin_ck", + NULL, +}; + +static const char * const am3_trace_pmd_clk_mux_ck_parents[] __initconst = { + "l4_wkup_cm:clk:0010:19", + "l4_wkup_cm:clk:0010:30", + NULL, +}; + +static const char * const am3_trace_clk_div_ck_parents[] __initconst = { + "l4_wkup_cm:clk:0010:20", + NULL, +}; + +static const struct omap_clkctrl_div_data am3_trace_clk_div_ck_data __initconst = { + .max_div = 64, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const char * const am3_stm_clk_div_ck_parents[] __initconst = { + "l4_wkup_cm:clk:0010:22", + NULL, +}; + +static const struct omap_clkctrl_div_data am3_stm_clk_div_ck_data __initconst = { + .max_div = 64, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const char * const am3_dbg_clka_ck_parents[] __initconst = { + "dpll_core_m4_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data am3_debugss_bit_data[] __initconst = { + { 19, TI_CLK_GATE, am3_dbg_sysclk_ck_parents, NULL }, + { 20, TI_CLK_MUX, am3_trace_pmd_clk_mux_ck_parents, NULL }, + { 22, TI_CLK_MUX, am3_trace_pmd_clk_mux_ck_parents, NULL }, + { 24, TI_CLK_DIVIDER, am3_trace_clk_div_ck_parents, &am3_trace_clk_div_ck_data }, + { 27, TI_CLK_DIVIDER, am3_stm_clk_div_ck_parents, &am3_stm_clk_div_ck_data }, + { 30, TI_CLK_GATE, am3_dbg_clka_ck_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am3_l4_wkup_clkctrl_regs[] __initconst = { + { AM3_CONTROL_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_core_m4_div2_ck" }, + { AM3_GPIO1_CLKCTRL, am3_gpio1_bit_data, CLKF_SW_SUP, "dpll_core_m4_div2_ck" }, + { AM3_L4_WKUP_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_core_m4_div2_ck" }, + { AM3_DEBUGSS_CLKCTRL, am3_debugss_bit_data, CLKF_SW_SUP, "l4_wkup_cm:clk:0010:24", "l3_aon_clkdm" }, + { AM3_WKUP_M3_CLKCTRL, NULL, CLKF_NO_IDLEST, "dpll_core_m4_div2_ck", "l4_wkup_aon_clkdm" }, + { AM3_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" }, + { AM3_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" }, + { AM3_ADC_TSC_CLKCTRL, NULL, CLKF_SW_SUP, "adc_tsc_fck" }, + { AM3_SMARTREFLEX0_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex0_fck" }, + { AM3_TIMER1_CLKCTRL, NULL, CLKF_SW_SUP, "timer1_fck" }, + { AM3_SMARTREFLEX1_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex1_fck" }, + { AM3_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "wdt1_fck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am3_mpu_clkctrl_regs[] __initconst = { + { AM3_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_mpu_m2_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am3_l4_rtc_clkctrl_regs[] __initconst = { + { AM3_RTC_CLKCTRL, NULL, CLKF_SW_SUP, "clk_32768_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am3_gfx_l3_clkctrl_regs[] __initconst = { + { AM3_GFX_CLKCTRL, NULL, CLKF_SW_SUP, "gfx_fck_div_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am3_l4_cefuse_clkctrl_regs[] __initconst = { + { AM3_CEFUSE_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck" }, + { 0 }, +}; + +const struct omap_clkctrl_data am3_clkctrl_data[] __initconst = { + { 0x44e00014, am3_l4_per_clkctrl_regs }, + { 0x44e00404, am3_l4_wkup_clkctrl_regs }, + { 0x44e00604, am3_mpu_clkctrl_regs }, + { 0x44e00800, am3_l4_rtc_clkctrl_regs }, + { 0x44e00904, am3_gfx_l3_clkctrl_regs }, + { 0x44e00a20, am3_l4_cefuse_clkctrl_regs }, + { 0 }, +}; + +static struct ti_dt_clk am33xx_clks[] = { + DT_CLK(NULL, "timer_32k_ck", "l4_per_cm:0138:0"), + DT_CLK(NULL, "timer_sys_ck", "sys_clkin_ck"), + DT_CLK(NULL, "clkdiv32k_ick", "l4_per_cm:0138:0"), + DT_CLK(NULL, "dbg_clka_ck", "l4_wkup_cm:0010:30"), + DT_CLK(NULL, "dbg_sysclk_ck", "l4_wkup_cm:0010:19"), + DT_CLK(NULL, "gpio0_dbclk", "l4_wkup_cm:0004:18"), + DT_CLK(NULL, "gpio1_dbclk", "l4_per_cm:0098:18"), + DT_CLK(NULL, "gpio2_dbclk", "l4_per_cm:009c:18"), + DT_CLK(NULL, "gpio3_dbclk", "l4_per_cm:00a0:18"), + DT_CLK(NULL, "stm_clk_div_ck", "l4_wkup_cm:0010:27"), + DT_CLK(NULL, "stm_pmd_clock_mux_ck", "l4_wkup_cm:0010:22"), + DT_CLK(NULL, "trace_clk_div_ck", "l4_wkup_cm:0010:24"), + DT_CLK(NULL, "trace_pmd_clk_mux_ck", "l4_wkup_cm:0010:20"), + { .node_name = NULL }, +}; + +static const char *enable_init_clks[] = { + "dpll_ddr_m2_ck", + "dpll_mpu_m2_ck", + "l3_gclk", + "l4hs_gclk", + "l4fw_gclk", + "l4ls_gclk", + /* Required for external peripherals like, Audio codecs */ + "clkout2_ck", +}; + +int __init am33xx_dt_clk_init(void) +{ + struct clk *clk1, *clk2; + + ti_dt_clocks_register(am33xx_clks); + + omap2_clk_disable_autoidle_all(); + + ti_clk_add_aliases(); + + omap2_clk_enable_init_clocks(enable_init_clks, + ARRAY_SIZE(enable_init_clks)); + + /* TRM ERRATA: Timer 3 & 6 default parent (TCLKIN) may not be always + * physically present, in such a case HWMOD enabling of + * clock would be failure with default parent. And timer + * probe thinks clock is already enabled, this leads to + * crash upon accessing timer 3 & 6 registers in probe. + * Fix by setting parent of both these timers to master + * oscillator clock. + */ + + clk1 = clk_get_sys(NULL, "sys_clkin_ck"); + clk2 = clk_get_sys(NULL, "timer3_fck"); + clk_set_parent(clk2, clk1); + + clk2 = clk_get_sys(NULL, "timer6_fck"); + clk_set_parent(clk2, clk1); + /* + * The On-Chip 32K RC Osc clock is not an accurate clock-source as per + * the design/spec, so as a result, for example, timer which supposed + * to get expired @60Sec, but will expire somewhere ~@40Sec, which is + * not expected by any use-case, so change WDT1 clock source to PRCM + * 32KHz clock. + */ + clk1 = clk_get_sys(NULL, "wdt1_fck"); + clk2 = clk_get_sys(NULL, "clkdiv32k_ick"); + clk_set_parent(clk1, clk2); + + return 0; +} diff --git a/drivers/clk/ti/clk-3xxx.c b/drivers/clk/ti/clk-3xxx.c new file mode 100644 index 000000000..8aa5f5793 --- /dev/null +++ b/drivers/clk/ti/clk-3xxx.c @@ -0,0 +1,361 @@ +/* + * OMAP3 Clock init + * + * Copyright (C) 2013 Texas Instruments, Inc + * Tero Kristo (t-kristo@ti.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +#define OMAP3430ES2_ST_DSS_IDLE_SHIFT 1 +#define OMAP3430ES2_ST_HSOTGUSB_IDLE_SHIFT 5 +#define OMAP3430ES2_ST_SSI_IDLE_SHIFT 8 + +#define OMAP34XX_CM_IDLEST_VAL 1 + +/* + * In AM35xx IPSS, the {ICK,FCK} enable bits for modules are exported + * in the same register at a bit offset of 0x8. The EN_ACK for ICK is + * at an offset of 4 from ICK enable bit. + */ +#define AM35XX_IPSS_ICK_MASK 0xF +#define AM35XX_IPSS_ICK_EN_ACK_OFFSET 0x4 +#define AM35XX_IPSS_ICK_FCK_OFFSET 0x8 +#define AM35XX_IPSS_CLK_IDLEST_VAL 0 + +#define AM35XX_ST_IPSS_SHIFT 5 + +/** + * omap3430es2_clk_ssi_find_idlest - return CM_IDLEST info for SSI + * @clk: struct clk * being enabled + * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into + * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into + * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator + * + * The OMAP3430ES2 SSI target CM_IDLEST bit is at a different shift + * from the CM_{I,F}CLKEN bit. Pass back the correct info via + * @idlest_reg and @idlest_bit. No return value. + */ +static void omap3430es2_clk_ssi_find_idlest(struct clk_hw_omap *clk, + struct clk_omap_reg *idlest_reg, + u8 *idlest_bit, + u8 *idlest_val) +{ + memcpy(idlest_reg, &clk->enable_reg, sizeof(*idlest_reg)); + idlest_reg->offset &= ~0xf0; + idlest_reg->offset |= 0x20; + *idlest_bit = OMAP3430ES2_ST_SSI_IDLE_SHIFT; + *idlest_val = OMAP34XX_CM_IDLEST_VAL; +} + +const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait = { + .allow_idle = omap2_clkt_iclk_allow_idle, + .deny_idle = omap2_clkt_iclk_deny_idle, + .find_idlest = omap3430es2_clk_ssi_find_idlest, + .find_companion = omap2_clk_dflt_find_companion, +}; + +/** + * omap3430es2_clk_dss_usbhost_find_idlest - CM_IDLEST info for DSS, USBHOST + * @clk: struct clk * being enabled + * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into + * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into + * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator + * + * Some OMAP modules on OMAP3 ES2+ chips have both initiator and + * target IDLEST bits. For our purposes, we are concerned with the + * target IDLEST bits, which exist at a different bit position than + * the *CLKEN bit position for these modules (DSS and USBHOST) (The + * default find_idlest code assumes that they are at the same + * position.) No return value. + */ +static void +omap3430es2_clk_dss_usbhost_find_idlest(struct clk_hw_omap *clk, + struct clk_omap_reg *idlest_reg, + u8 *idlest_bit, u8 *idlest_val) +{ + memcpy(idlest_reg, &clk->enable_reg, sizeof(*idlest_reg)); + + idlest_reg->offset &= ~0xf0; + idlest_reg->offset |= 0x20; + /* USBHOST_IDLE has same shift */ + *idlest_bit = OMAP3430ES2_ST_DSS_IDLE_SHIFT; + *idlest_val = OMAP34XX_CM_IDLEST_VAL; +} + +const struct clk_hw_omap_ops clkhwops_omap3430es2_dss_usbhost_wait = { + .find_idlest = omap3430es2_clk_dss_usbhost_find_idlest, + .find_companion = omap2_clk_dflt_find_companion, +}; + +const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_dss_usbhost_wait = { + .allow_idle = omap2_clkt_iclk_allow_idle, + .deny_idle = omap2_clkt_iclk_deny_idle, + .find_idlest = omap3430es2_clk_dss_usbhost_find_idlest, + .find_companion = omap2_clk_dflt_find_companion, +}; + +/** + * omap3430es2_clk_hsotgusb_find_idlest - return CM_IDLEST info for HSOTGUSB + * @clk: struct clk * being enabled + * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into + * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into + * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator + * + * The OMAP3430ES2 HSOTGUSB target CM_IDLEST bit is at a different + * shift from the CM_{I,F}CLKEN bit. Pass back the correct info via + * @idlest_reg and @idlest_bit. No return value. + */ +static void +omap3430es2_clk_hsotgusb_find_idlest(struct clk_hw_omap *clk, + struct clk_omap_reg *idlest_reg, + u8 *idlest_bit, + u8 *idlest_val) +{ + memcpy(idlest_reg, &clk->enable_reg, sizeof(*idlest_reg)); + idlest_reg->offset &= ~0xf0; + idlest_reg->offset |= 0x20; + *idlest_bit = OMAP3430ES2_ST_HSOTGUSB_IDLE_SHIFT; + *idlest_val = OMAP34XX_CM_IDLEST_VAL; +} + +const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_hsotgusb_wait = { + .allow_idle = omap2_clkt_iclk_allow_idle, + .deny_idle = omap2_clkt_iclk_deny_idle, + .find_idlest = omap3430es2_clk_hsotgusb_find_idlest, + .find_companion = omap2_clk_dflt_find_companion, +}; + +/** + * am35xx_clk_find_idlest - return clock ACK info for AM35XX IPSS + * @clk: struct clk * being enabled + * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into + * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into + * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator + * + * The interface clocks on AM35xx IPSS reflects the clock idle status + * in the enable register itsel at a bit offset of 4 from the enable + * bit. A value of 1 indicates that clock is enabled. + */ +static void am35xx_clk_find_idlest(struct clk_hw_omap *clk, + struct clk_omap_reg *idlest_reg, + u8 *idlest_bit, + u8 *idlest_val) +{ + memcpy(idlest_reg, &clk->enable_reg, sizeof(*idlest_reg)); + *idlest_bit = clk->enable_bit + AM35XX_IPSS_ICK_EN_ACK_OFFSET; + *idlest_val = AM35XX_IPSS_CLK_IDLEST_VAL; +} + +/** + * am35xx_clk_find_companion - find companion clock to @clk + * @clk: struct clk * to find the companion clock of + * @other_reg: void __iomem ** to return the companion clock CM_*CLKEN va in + * @other_bit: u8 ** to return the companion clock bit shift in + * + * Some clocks don't have companion clocks. For example, modules with + * only an interface clock (such as HECC) don't have a companion + * clock. Right now, this code relies on the hardware exporting a bit + * in the correct companion register that indicates that the + * nonexistent 'companion clock' is active. Future patches will + * associate this type of code with per-module data structures to + * avoid this issue, and remove the casts. No return value. + */ +static void am35xx_clk_find_companion(struct clk_hw_omap *clk, + struct clk_omap_reg *other_reg, + u8 *other_bit) +{ + memcpy(other_reg, &clk->enable_reg, sizeof(*other_reg)); + if (clk->enable_bit & AM35XX_IPSS_ICK_MASK) + *other_bit = clk->enable_bit + AM35XX_IPSS_ICK_FCK_OFFSET; + else + *other_bit = clk->enable_bit - AM35XX_IPSS_ICK_FCK_OFFSET; +} + +const struct clk_hw_omap_ops clkhwops_am35xx_ipss_module_wait = { + .find_idlest = am35xx_clk_find_idlest, + .find_companion = am35xx_clk_find_companion, +}; + +/** + * am35xx_clk_ipss_find_idlest - return CM_IDLEST info for IPSS + * @clk: struct clk * being enabled + * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into + * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into + * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator + * + * The IPSS target CM_IDLEST bit is at a different shift from the + * CM_{I,F}CLKEN bit. Pass back the correct info via @idlest_reg + * and @idlest_bit. No return value. + */ +static void am35xx_clk_ipss_find_idlest(struct clk_hw_omap *clk, + struct clk_omap_reg *idlest_reg, + u8 *idlest_bit, + u8 *idlest_val) +{ + memcpy(idlest_reg, &clk->enable_reg, sizeof(*idlest_reg)); + + idlest_reg->offset &= ~0xf0; + idlest_reg->offset |= 0x20; + *idlest_bit = AM35XX_ST_IPSS_SHIFT; + *idlest_val = OMAP34XX_CM_IDLEST_VAL; +} + +const struct clk_hw_omap_ops clkhwops_am35xx_ipss_wait = { + .allow_idle = omap2_clkt_iclk_allow_idle, + .deny_idle = omap2_clkt_iclk_deny_idle, + .find_idlest = am35xx_clk_ipss_find_idlest, + .find_companion = omap2_clk_dflt_find_companion, +}; + +static struct ti_dt_clk omap3xxx_clks[] = { + DT_CLK(NULL, "timer_32k_ck", "omap_32k_fck"), + DT_CLK(NULL, "timer_sys_ck", "sys_ck"), + { .node_name = NULL }, +}; + +static struct ti_dt_clk omap36xx_omap3430es2plus_clks[] = { + DT_CLK(NULL, "ssi_ssr_fck", "ssi_ssr_fck_3430es2"), + DT_CLK(NULL, "ssi_sst_fck", "ssi_sst_fck_3430es2"), + DT_CLK(NULL, "hsotgusb_ick", "hsotgusb_ick_3430es2"), + DT_CLK(NULL, "ssi_ick", "ssi_ick_3430es2"), + { .node_name = NULL }, +}; + +static struct ti_dt_clk omap3430es1_clks[] = { + DT_CLK(NULL, "ssi_ssr_fck", "ssi_ssr_fck_3430es1"), + DT_CLK(NULL, "ssi_sst_fck", "ssi_sst_fck_3430es1"), + DT_CLK(NULL, "hsotgusb_ick", "hsotgusb_ick_3430es1"), + DT_CLK(NULL, "ssi_ick", "ssi_ick_3430es1"), + DT_CLK(NULL, "dss1_alwon_fck", "dss1_alwon_fck_3430es1"), + DT_CLK(NULL, "dss_ick", "dss_ick_3430es1"), + { .node_name = NULL }, +}; + +static struct ti_dt_clk omap36xx_am35xx_omap3430es2plus_clks[] = { + DT_CLK(NULL, "dss1_alwon_fck", "dss1_alwon_fck_3430es2"), + DT_CLK(NULL, "dss_ick", "dss_ick_3430es2"), + { .node_name = NULL }, +}; + +static struct ti_dt_clk am35xx_clks[] = { + DT_CLK(NULL, "hsotgusb_ick", "hsotgusb_ick_am35xx"), + DT_CLK(NULL, "hsotgusb_fck", "hsotgusb_fck_am35xx"), + DT_CLK(NULL, "uart4_ick", "uart4_ick_am35xx"), + DT_CLK(NULL, "uart4_fck", "uart4_fck_am35xx"), + { .node_name = NULL }, +}; + +static const char *enable_init_clks[] = { + "sdrc_ick", + "gpmc_fck", + "omapctrl_ick", +}; + +enum { + OMAP3_SOC_AM35XX, + OMAP3_SOC_OMAP3430_ES1, + OMAP3_SOC_OMAP3430_ES2_PLUS, + OMAP3_SOC_OMAP3630, +}; + +/** + * omap3_clk_lock_dpll5 - locks DPLL5 + * + * Locks DPLL5 to a pre-defined frequency. This is required for proper + * operation of USB. + */ +void __init omap3_clk_lock_dpll5(void) +{ + struct clk *dpll5_clk; + struct clk *dpll5_m2_clk; + + /* + * Errata sprz319f advisory 2.1 documents a USB host clock drift issue + * that can be worked around using specially crafted dpll5 settings + * with a dpll5_m2 divider set to 8. Set the dpll5 rate to 8x the USB + * host clock rate, its .set_rate handler() will detect that frequency + * and use the errata settings. + */ + dpll5_clk = clk_get(NULL, "dpll5_ck"); + clk_set_rate(dpll5_clk, OMAP3_DPLL5_FREQ_FOR_USBHOST * 8); + clk_prepare_enable(dpll5_clk); + + /* Program dpll5_m2_clk divider */ + dpll5_m2_clk = clk_get(NULL, "dpll5_m2_ck"); + clk_prepare_enable(dpll5_m2_clk); + clk_set_rate(dpll5_m2_clk, OMAP3_DPLL5_FREQ_FOR_USBHOST); + + clk_disable_unprepare(dpll5_m2_clk); + clk_disable_unprepare(dpll5_clk); +} + +static int __init omap3xxx_dt_clk_init(int soc_type) +{ + if (soc_type == OMAP3_SOC_AM35XX || soc_type == OMAP3_SOC_OMAP3630 || + soc_type == OMAP3_SOC_OMAP3430_ES1 || + soc_type == OMAP3_SOC_OMAP3430_ES2_PLUS) + ti_dt_clocks_register(omap3xxx_clks); + + if (soc_type == OMAP3_SOC_AM35XX) + ti_dt_clocks_register(am35xx_clks); + + if (soc_type == OMAP3_SOC_OMAP3630 || soc_type == OMAP3_SOC_AM35XX || + soc_type == OMAP3_SOC_OMAP3430_ES2_PLUS) + ti_dt_clocks_register(omap36xx_am35xx_omap3430es2plus_clks); + + if (soc_type == OMAP3_SOC_OMAP3430_ES1) + ti_dt_clocks_register(omap3430es1_clks); + + if (soc_type == OMAP3_SOC_OMAP3430_ES2_PLUS || + soc_type == OMAP3_SOC_OMAP3630) + ti_dt_clocks_register(omap36xx_omap3430es2plus_clks); + + omap2_clk_disable_autoidle_all(); + + ti_clk_add_aliases(); + + omap2_clk_enable_init_clocks(enable_init_clks, + ARRAY_SIZE(enable_init_clks)); + + pr_info("Clocking rate (Crystal/Core/MPU): %ld.%01ld/%ld/%ld MHz\n", + (clk_get_rate(clk_get_sys(NULL, "osc_sys_ck")) / 1000000), + (clk_get_rate(clk_get_sys(NULL, "osc_sys_ck")) / 100000) % 10, + (clk_get_rate(clk_get_sys(NULL, "core_ck")) / 1000000), + (clk_get_rate(clk_get_sys(NULL, "arm_fck")) / 1000000)); + + if (soc_type != OMAP3_SOC_OMAP3430_ES1) + omap3_clk_lock_dpll5(); + + return 0; +} + +int __init omap3430_dt_clk_init(void) +{ + return omap3xxx_dt_clk_init(OMAP3_SOC_OMAP3430_ES2_PLUS); +} + +int __init omap3630_dt_clk_init(void) +{ + return omap3xxx_dt_clk_init(OMAP3_SOC_OMAP3630); +} + +int __init am35xx_dt_clk_init(void) +{ + return omap3xxx_dt_clk_init(OMAP3_SOC_AM35XX); +} diff --git a/drivers/clk/ti/clk-43xx.c b/drivers/clk/ti/clk-43xx.c new file mode 100644 index 000000000..63c5ddb50 --- /dev/null +++ b/drivers/clk/ti/clk-43xx.c @@ -0,0 +1,252 @@ +/* + * AM43XX Clock init + * + * Copyright (C) 2013 Texas Instruments, Inc + * Tero Kristo (t-kristo@ti.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clk/ti.h> +#include <dt-bindings/clock/am4.h> + +#include "clock.h" + +static const char * const am4_synctimer_32kclk_parents[] __initconst = { + "mux_synctimer32k_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data am4_counter_32k_bit_data[] __initconst = { + { 8, TI_CLK_GATE, am4_synctimer_32kclk_parents, NULL }, + { 0 }, +}; + +static const char * const am4_gpio0_dbclk_parents[] __initconst = { + "gpio0_dbclk_mux_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data am4_gpio1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, am4_gpio0_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am4_l4_wkup_clkctrl_regs[] __initconst = { + { AM4_ADC_TSC_CLKCTRL, NULL, CLKF_SW_SUP, "adc_tsc_fck", "l3s_tsc_clkdm" }, + { AM4_L4_WKUP_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck", "l4_wkup_clkdm" }, + { AM4_WKUP_M3_CLKCTRL, NULL, CLKF_NO_IDLEST, "sys_clkin_ck" }, + { AM4_COUNTER_32K_CLKCTRL, am4_counter_32k_bit_data, CLKF_SW_SUP, "l4_wkup_cm:clk:0210:8" }, + { AM4_TIMER1_CLKCTRL, NULL, CLKF_SW_SUP, "timer1_fck", "l4_wkup_clkdm" }, + { AM4_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "wdt1_fck", "l4_wkup_clkdm" }, + { AM4_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck", "l4_wkup_clkdm" }, + { AM4_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck", "l4_wkup_clkdm" }, + { AM4_SMARTREFLEX0_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex0_fck", "l4_wkup_clkdm" }, + { AM4_SMARTREFLEX1_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex1_fck", "l4_wkup_clkdm" }, + { AM4_CONTROL_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck", "l4_wkup_clkdm" }, + { AM4_GPIO1_CLKCTRL, am4_gpio1_bit_data, CLKF_SW_SUP, "sys_clkin_ck", "l4_wkup_clkdm" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am4_mpu_clkctrl_regs[] __initconst = { + { AM4_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_mpu_m2_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am4_gfx_l3_clkctrl_regs[] __initconst = { + { AM4_GFX_CLKCTRL, NULL, CLKF_SW_SUP, "gfx_fck_div_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am4_l4_rtc_clkctrl_regs[] __initconst = { + { AM4_RTC_CLKCTRL, NULL, CLKF_SW_SUP, "clk_32768_ck" }, + { 0 }, +}; + +static const char * const am4_usb_otg_ss0_refclk960m_parents[] __initconst = { + "dpll_per_clkdcoldo", + NULL, +}; + +static const struct omap_clkctrl_bit_data am4_usb_otg_ss0_bit_data[] __initconst = { + { 8, TI_CLK_GATE, am4_usb_otg_ss0_refclk960m_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data am4_usb_otg_ss1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, am4_usb_otg_ss0_refclk960m_parents, NULL }, + { 0 }, +}; + +static const char * const am4_gpio1_dbclk_parents[] __initconst = { + "clkdiv32k_ick", + NULL, +}; + +static const struct omap_clkctrl_bit_data am4_gpio2_bit_data[] __initconst = { + { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data am4_gpio3_bit_data[] __initconst = { + { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data am4_gpio4_bit_data[] __initconst = { + { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data am4_gpio5_bit_data[] __initconst = { + { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data am4_gpio6_bit_data[] __initconst = { + { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data am4_l4_per_clkctrl_regs[] __initconst = { + { AM4_L3_MAIN_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM4_AES_CLKCTRL, NULL, CLKF_SW_SUP, "aes0_fck", "l3_clkdm" }, + { AM4_DES_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM4_L3_INSTR_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM4_OCMCRAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM4_SHAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM4_VPFE0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3s_clkdm" }, + { AM4_VPFE1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3s_clkdm" }, + { AM4_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM4_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM4_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM4_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" }, + { AM4_L4_HS_CLKCTRL, NULL, CLKF_SW_SUP, "l4hs_gclk", "l3_clkdm" }, + { AM4_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk", "l3s_clkdm" }, + { AM4_MCASP0_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp0_fck", "l3s_clkdm" }, + { AM4_MCASP1_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp1_fck", "l3s_clkdm" }, + { AM4_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk", "l3s_clkdm" }, + { AM4_QSPI_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk", "l3s_clkdm" }, + { AM4_USB_OTG_SS0_CLKCTRL, am4_usb_otg_ss0_bit_data, CLKF_SW_SUP, "l3s_gclk", "l3s_clkdm" }, + { AM4_USB_OTG_SS1_CLKCTRL, am4_usb_otg_ss1_bit_data, CLKF_SW_SUP, "l3s_gclk", "l3s_clkdm" }, + { AM4_PRUSS_CLKCTRL, NULL, CLKF_SW_SUP, "pruss_ocp_gclk", "pruss_ocp_clkdm" }, + { AM4_L4_LS_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_D_CAN0_CLKCTRL, NULL, CLKF_SW_SUP, "dcan0_fck" }, + { AM4_D_CAN1_CLKCTRL, NULL, CLKF_SW_SUP, "dcan1_fck" }, + { AM4_EPWMSS0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_EPWMSS1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_EPWMSS2_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_EPWMSS3_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_EPWMSS4_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_EPWMSS5_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_ELM_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_GPIO2_CLKCTRL, am4_gpio2_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_GPIO3_CLKCTRL, am4_gpio3_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_GPIO4_CLKCTRL, am4_gpio4_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_GPIO5_CLKCTRL, am4_gpio5_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_GPIO6_CLKCTRL, am4_gpio6_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_HDQ1W_CLKCTRL, NULL, CLKF_SW_SUP, "func_12m_clk" }, + { AM4_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_MAILBOX_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" }, + { AM4_MMC2_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" }, + { AM4_RNG_CLKCTRL, NULL, CLKF_SW_SUP, "rng_fck" }, + { AM4_SPI0_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_SPI1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_SPI2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_SPI3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_SPI4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_SPINLOCK_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "timer2_fck" }, + { AM4_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "timer3_fck" }, + { AM4_TIMER4_CLKCTRL, NULL, CLKF_SW_SUP, "timer4_fck" }, + { AM4_TIMER5_CLKCTRL, NULL, CLKF_SW_SUP, "timer5_fck" }, + { AM4_TIMER6_CLKCTRL, NULL, CLKF_SW_SUP, "timer6_fck" }, + { AM4_TIMER7_CLKCTRL, NULL, CLKF_SW_SUP, "timer7_fck" }, + { AM4_TIMER8_CLKCTRL, NULL, CLKF_SW_SUP, "timer8_fck" }, + { AM4_TIMER9_CLKCTRL, NULL, CLKF_SW_SUP, "timer9_fck" }, + { AM4_TIMER10_CLKCTRL, NULL, CLKF_SW_SUP, "timer10_fck" }, + { AM4_TIMER11_CLKCTRL, NULL, CLKF_SW_SUP, "timer11_fck" }, + { AM4_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_UART4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_UART5_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_UART6_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, + { AM4_OCP2SCP0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_OCP2SCP1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, + { AM4_EMIF_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_ddr_m2_ck", "emif_clkdm" }, + { AM4_DSS_CORE_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_SET_RATE_PARENT, "disp_clk", "dss_clkdm" }, + { AM4_CPGMAC0_CLKCTRL, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk", "cpsw_125mhz_clkdm" }, + { 0 }, +}; + +const struct omap_clkctrl_data am4_clkctrl_data[] __initconst = { + { 0x44df2820, am4_l4_wkup_clkctrl_regs }, + { 0x44df8320, am4_mpu_clkctrl_regs }, + { 0x44df8420, am4_gfx_l3_clkctrl_regs }, + { 0x44df8520, am4_l4_rtc_clkctrl_regs }, + { 0x44df8820, am4_l4_per_clkctrl_regs }, + { 0 }, +}; + +const struct omap_clkctrl_data am438x_clkctrl_data[] __initconst = { + { 0x44df2820, am4_l4_wkup_clkctrl_regs }, + { 0x44df8320, am4_mpu_clkctrl_regs }, + { 0x44df8420, am4_gfx_l3_clkctrl_regs }, + { 0x44df8820, am4_l4_per_clkctrl_regs }, + { 0 }, +}; + +static struct ti_dt_clk am43xx_clks[] = { + DT_CLK(NULL, "timer_32k_ck", "clkdiv32k_ick"), + DT_CLK(NULL, "timer_sys_ck", "sys_clkin_ck"), + DT_CLK(NULL, "gpio0_dbclk", "l4_wkup_cm:0348:8"), + DT_CLK(NULL, "gpio1_dbclk", "l4_per_cm:0458:8"), + DT_CLK(NULL, "gpio2_dbclk", "l4_per_cm:0460:8"), + DT_CLK(NULL, "gpio3_dbclk", "l4_per_cm:0468:8"), + DT_CLK(NULL, "gpio4_dbclk", "l4_per_cm:0470:8"), + DT_CLK(NULL, "gpio5_dbclk", "l4_per_cm:0478:8"), + DT_CLK(NULL, "synctimer_32kclk", "l4_wkup_cm:0210:8"), + DT_CLK(NULL, "usb_otg_ss0_refclk960m", "l4_per_cm:0240:8"), + DT_CLK(NULL, "usb_otg_ss1_refclk960m", "l4_per_cm:0248:8"), + { .node_name = NULL }, +}; + +int __init am43xx_dt_clk_init(void) +{ + struct clk *clk1, *clk2; + + ti_dt_clocks_register(am43xx_clks); + + omap2_clk_disable_autoidle_all(); + + ti_clk_add_aliases(); + + /* + * cpsw_cpts_rft_clk has got the choice of 3 clocksources + * dpll_core_m4_ck, dpll_core_m5_ck and dpll_disp_m2_ck. + * By default dpll_core_m4_ck is selected, witn this as clock + * source the CPTS doesnot work properly. It gives clockcheck errors + * while running PTP. + * clockcheck: clock jumped backward or running slower than expected! + * By selecting dpll_core_m5_ck as the clocksource fixes this issue. + * In AM335x dpll_core_m5_ck is the default clocksource. + */ + clk1 = clk_get_sys(NULL, "cpsw_cpts_rft_clk"); + clk2 = clk_get_sys(NULL, "dpll_core_m5_ck"); + clk_set_parent(clk1, clk2); + + return 0; +} diff --git a/drivers/clk/ti/clk-44xx.c b/drivers/clk/ti/clk-44xx.c new file mode 100644 index 000000000..339d30d64 --- /dev/null +++ b/drivers/clk/ti/clk-44xx.c @@ -0,0 +1,815 @@ +/* + * OMAP4 Clock init + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo (t-kristo@ti.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/clk/ti.h> +#include <dt-bindings/clock/omap4.h> + +#include "clock.h" + +/* + * OMAP4 ABE DPLL default frequency. In OMAP4460 TRM version V, section + * "3.6.3.2.3 CM1_ABE Clock Generator" states that the "DPLL_ABE_X2_CLK + * must be set to 196.608 MHz" and hence, the DPLL locked frequency is + * half of this value. + */ +#define OMAP4_DPLL_ABE_DEFFREQ 98304000 + +/* + * OMAP4 USB DPLL default frequency. In OMAP4430 TRM version V, section + * "3.6.3.9.5 DPLL_USB Preferred Settings" shows that the preferred + * locked frequency for the USB DPLL is 960MHz. + */ +#define OMAP4_DPLL_USB_DEFFREQ 960000000 + +static const struct omap_clkctrl_reg_data omap4_mpuss_clkctrl_regs[] __initconst = { + { OMAP4_MPU_CLKCTRL, NULL, 0, "dpll_mpu_m2_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_tesla_clkctrl_regs[] __initconst = { + { OMAP4_DSP_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_iva_m4x2_ck" }, + { 0 }, +}; + +static const char * const omap4_aess_fclk_parents[] __initconst = { + "abe_clk", + NULL, +}; + +static const struct omap_clkctrl_div_data omap4_aess_fclk_data __initconst = { + .max_div = 2, +}; + +static const struct omap_clkctrl_bit_data omap4_aess_bit_data[] __initconst = { + { 24, TI_CLK_DIVIDER, omap4_aess_fclk_parents, &omap4_aess_fclk_data }, + { 0 }, +}; + +static const char * const omap4_func_dmic_abe_gfclk_parents[] __initconst = { + "abe_cm:clk:0018:26", + "pad_clks_ck", + "slimbus_clk", + NULL, +}; + +static const char * const omap4_dmic_sync_mux_ck_parents[] __initconst = { + "abe_24m_fclk", + "syc_clk_div_ck", + "func_24m_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_dmic_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_func_dmic_abe_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_func_mcasp_abe_gfclk_parents[] __initconst = { + "abe_cm:clk:0020:26", + "pad_clks_ck", + "slimbus_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_mcasp_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_func_mcasp_abe_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_func_mcbsp1_gfclk_parents[] __initconst = { + "abe_cm:clk:0028:26", + "pad_clks_ck", + "slimbus_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_mcbsp1_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_func_mcbsp1_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_func_mcbsp2_gfclk_parents[] __initconst = { + "abe_cm:clk:0030:26", + "pad_clks_ck", + "slimbus_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_mcbsp2_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_func_mcbsp2_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_func_mcbsp3_gfclk_parents[] __initconst = { + "abe_cm:clk:0038:26", + "pad_clks_ck", + "slimbus_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_mcbsp3_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_func_mcbsp3_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_slimbus1_fclk_0_parents[] __initconst = { + "abe_24m_fclk", + NULL, +}; + +static const char * const omap4_slimbus1_fclk_1_parents[] __initconst = { + "func_24m_clk", + NULL, +}; + +static const char * const omap4_slimbus1_fclk_2_parents[] __initconst = { + "pad_clks_ck", + NULL, +}; + +static const char * const omap4_slimbus1_slimbus_clk_parents[] __initconst = { + "slimbus_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_slimbus1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_slimbus1_fclk_0_parents, NULL }, + { 9, TI_CLK_GATE, omap4_slimbus1_fclk_1_parents, NULL }, + { 10, TI_CLK_GATE, omap4_slimbus1_fclk_2_parents, NULL }, + { 11, TI_CLK_GATE, omap4_slimbus1_slimbus_clk_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_timer5_sync_mux_parents[] __initconst = { + "syc_clk_div_ck", + "sys_32k_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_timer5_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_timer5_sync_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_timer6_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_timer5_sync_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_timer7_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_timer5_sync_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_timer8_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_timer5_sync_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_abe_clkctrl_regs[] __initconst = { + { OMAP4_L4_ABE_CLKCTRL, NULL, 0, "ocp_abe_iclk" }, + { OMAP4_AESS_CLKCTRL, omap4_aess_bit_data, CLKF_SW_SUP, "abe_cm:clk:0008:24" }, + { OMAP4_MCPDM_CLKCTRL, NULL, CLKF_SW_SUP, "pad_clks_ck" }, + { OMAP4_DMIC_CLKCTRL, omap4_dmic_bit_data, CLKF_SW_SUP, "abe_cm:clk:0018:24" }, + { OMAP4_MCASP_CLKCTRL, omap4_mcasp_bit_data, CLKF_SW_SUP, "abe_cm:clk:0020:24" }, + { OMAP4_MCBSP1_CLKCTRL, omap4_mcbsp1_bit_data, CLKF_SW_SUP, "abe_cm:clk:0028:24" }, + { OMAP4_MCBSP2_CLKCTRL, omap4_mcbsp2_bit_data, CLKF_SW_SUP, "abe_cm:clk:0030:24" }, + { OMAP4_MCBSP3_CLKCTRL, omap4_mcbsp3_bit_data, CLKF_SW_SUP, "abe_cm:clk:0038:24" }, + { OMAP4_SLIMBUS1_CLKCTRL, omap4_slimbus1_bit_data, CLKF_SW_SUP, "abe_cm:clk:0040:8" }, + { OMAP4_TIMER5_CLKCTRL, omap4_timer5_bit_data, CLKF_SW_SUP, "abe_cm:clk:0048:24" }, + { OMAP4_TIMER6_CLKCTRL, omap4_timer6_bit_data, CLKF_SW_SUP, "abe_cm:clk:0050:24" }, + { OMAP4_TIMER7_CLKCTRL, omap4_timer7_bit_data, CLKF_SW_SUP, "abe_cm:clk:0058:24" }, + { OMAP4_TIMER8_CLKCTRL, omap4_timer8_bit_data, CLKF_SW_SUP, "abe_cm:clk:0060:24" }, + { OMAP4_WD_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l4_ao_clkctrl_regs[] __initconst = { + { OMAP4_SMARTREFLEX_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "l4_wkup_clk_mux_ck" }, + { OMAP4_SMARTREFLEX_IVA_CLKCTRL, NULL, CLKF_SW_SUP, "l4_wkup_clk_mux_ck" }, + { OMAP4_SMARTREFLEX_CORE_CLKCTRL, NULL, CLKF_SW_SUP, "l4_wkup_clk_mux_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l3_1_clkctrl_regs[] __initconst = { + { OMAP4_L3_MAIN_1_CLKCTRL, NULL, 0, "l3_div_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l3_2_clkctrl_regs[] __initconst = { + { OMAP4_L3_MAIN_2_CLKCTRL, NULL, 0, "l3_div_ck" }, + { OMAP4_GPMC_CLKCTRL, NULL, CLKF_HW_SUP, "l3_div_ck" }, + { OMAP4_OCMC_RAM_CLKCTRL, NULL, 0, "l3_div_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_ducati_clkctrl_regs[] __initconst = { + { OMAP4_IPU_CLKCTRL, NULL, CLKF_HW_SUP, "ducati_clk_mux_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l3_dma_clkctrl_regs[] __initconst = { + { OMAP4_DMA_SYSTEM_CLKCTRL, NULL, 0, "l3_div_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l3_emif_clkctrl_regs[] __initconst = { + { OMAP4_DMM_CLKCTRL, NULL, 0, "l3_div_ck" }, + { OMAP4_EMIF1_CLKCTRL, NULL, CLKF_HW_SUP, "ddrphy_ck" }, + { OMAP4_EMIF2_CLKCTRL, NULL, CLKF_HW_SUP, "ddrphy_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_d2d_clkctrl_regs[] __initconst = { + { OMAP4_C2C_CLKCTRL, NULL, 0, "div_core_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l4_cfg_clkctrl_regs[] __initconst = { + { OMAP4_L4_CFG_CLKCTRL, NULL, 0, "l4_div_ck" }, + { OMAP4_SPINLOCK_CLKCTRL, NULL, 0, "l4_div_ck" }, + { OMAP4_MAILBOX_CLKCTRL, NULL, 0, "l4_div_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l3_instr_clkctrl_regs[] __initconst = { + { OMAP4_L3_MAIN_3_CLKCTRL, NULL, CLKF_HW_SUP, "l3_div_ck" }, + { OMAP4_L3_INSTR_CLKCTRL, NULL, CLKF_HW_SUP, "l3_div_ck" }, + { OMAP4_OCP_WP_NOC_CLKCTRL, NULL, CLKF_HW_SUP, "l3_div_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_ivahd_clkctrl_regs[] __initconst = { + { OMAP4_IVA_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_iva_m5x2_ck" }, + { OMAP4_SL2IF_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_iva_m5x2_ck" }, + { 0 }, +}; + +static const char * const omap4_iss_ctrlclk_parents[] __initconst = { + "func_96m_fclk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_iss_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_iss_ctrlclk_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_fdif_fck_parents[] __initconst = { + "dpll_per_m4x2_ck", + NULL, +}; + +static const struct omap_clkctrl_div_data omap4_fdif_fck_data __initconst = { + .max_div = 4, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const struct omap_clkctrl_bit_data omap4_fdif_bit_data[] __initconst = { + { 24, TI_CLK_DIVIDER, omap4_fdif_fck_parents, &omap4_fdif_fck_data }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_iss_clkctrl_regs[] __initconst = { + { OMAP4_ISS_CLKCTRL, omap4_iss_bit_data, CLKF_SW_SUP, "ducati_clk_mux_ck" }, + { OMAP4_FDIF_CLKCTRL, omap4_fdif_bit_data, CLKF_SW_SUP, "iss_cm:clk:0008:24" }, + { 0 }, +}; + +static const char * const omap4_dss_dss_clk_parents[] __initconst = { + "dpll_per_m5x2_ck", + NULL, +}; + +static const char * const omap4_dss_48mhz_clk_parents[] __initconst = { + "func_48mc_fclk", + NULL, +}; + +static const char * const omap4_dss_sys_clk_parents[] __initconst = { + "syc_clk_div_ck", + NULL, +}; + +static const char * const omap4_dss_tv_clk_parents[] __initconst = { + "extalt_clkin_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_dss_core_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_dss_dss_clk_parents, NULL }, + { 9, TI_CLK_GATE, omap4_dss_48mhz_clk_parents, NULL }, + { 10, TI_CLK_GATE, omap4_dss_sys_clk_parents, NULL }, + { 11, TI_CLK_GATE, omap4_dss_tv_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l3_dss_clkctrl_regs[] __initconst = { + { OMAP4_DSS_CORE_CLKCTRL, omap4_dss_core_bit_data, CLKF_SW_SUP, "l3_dss_cm:clk:0000:8" }, + { 0 }, +}; + +static const char * const omap4_sgx_clk_mux_parents[] __initconst = { + "dpll_core_m7x2_ck", + "dpll_per_m7x2_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_gpu_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_sgx_clk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l3_gfx_clkctrl_regs[] __initconst = { + { OMAP4_GPU_CLKCTRL, omap4_gpu_bit_data, CLKF_SW_SUP, "l3_gfx_cm:clk:0000:24" }, + { 0 }, +}; + +static const char * const omap4_hsmmc1_fclk_parents[] __initconst = { + "func_64m_fclk", + "func_96m_fclk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_mmc1_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_hsmmc1_fclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_mmc2_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_hsmmc1_fclk_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_hsi_fck_parents[] __initconst = { + "dpll_per_m2x2_ck", + NULL, +}; + +static const struct omap_clkctrl_div_data omap4_hsi_fck_data __initconst = { + .max_div = 4, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const struct omap_clkctrl_bit_data omap4_hsi_bit_data[] __initconst = { + { 24, TI_CLK_DIVIDER, omap4_hsi_fck_parents, &omap4_hsi_fck_data }, + { 0 }, +}; + +static const char * const omap4_usb_host_hs_utmi_p1_clk_parents[] __initconst = { + "l3_init_cm:clk:0038:24", + NULL, +}; + +static const char * const omap4_usb_host_hs_utmi_p2_clk_parents[] __initconst = { + "l3_init_cm:clk:0038:25", + NULL, +}; + +static const char * const omap4_usb_host_hs_utmi_p3_clk_parents[] __initconst = { + "init_60m_fclk", + NULL, +}; + +static const char * const omap4_usb_host_hs_hsic480m_p1_clk_parents[] __initconst = { + "dpll_usb_m2_ck", + NULL, +}; + +static const char * const omap4_utmi_p1_gfclk_parents[] __initconst = { + "init_60m_fclk", + "xclk60mhsp1_ck", + NULL, +}; + +static const char * const omap4_utmi_p2_gfclk_parents[] __initconst = { + "init_60m_fclk", + "xclk60mhsp2_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_usb_host_hs_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_usb_host_hs_utmi_p1_clk_parents, NULL }, + { 9, TI_CLK_GATE, omap4_usb_host_hs_utmi_p2_clk_parents, NULL }, + { 10, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL }, + { 11, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL }, + { 12, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL }, + { 13, TI_CLK_GATE, omap4_usb_host_hs_hsic480m_p1_clk_parents, NULL }, + { 14, TI_CLK_GATE, omap4_usb_host_hs_hsic480m_p1_clk_parents, NULL }, + { 15, TI_CLK_GATE, omap4_dss_48mhz_clk_parents, NULL }, + { 24, TI_CLK_MUX, omap4_utmi_p1_gfclk_parents, NULL }, + { 25, TI_CLK_MUX, omap4_utmi_p2_gfclk_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_usb_otg_hs_xclk_parents[] __initconst = { + "l3_init_cm:clk:0040:24", + NULL, +}; + +static const char * const omap4_otg_60m_gfclk_parents[] __initconst = { + "utmi_phy_clkout_ck", + "xclk60motg_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_usb_otg_hs_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_usb_otg_hs_xclk_parents, NULL }, + { 24, TI_CLK_MUX, omap4_otg_60m_gfclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_usb_tll_hs_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL }, + { 9, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL }, + { 10, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_ocp2scp_usb_phy_phy_48m_parents[] __initconst = { + "func_48m_fclk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_ocp2scp_usb_phy_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_ocp2scp_usb_phy_phy_48m_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l3_init_clkctrl_regs[] __initconst = { + { OMAP4_MMC1_CLKCTRL, omap4_mmc1_bit_data, CLKF_SW_SUP, "l3_init_cm:clk:0008:24" }, + { OMAP4_MMC2_CLKCTRL, omap4_mmc2_bit_data, CLKF_SW_SUP, "l3_init_cm:clk:0010:24" }, + { OMAP4_HSI_CLKCTRL, omap4_hsi_bit_data, CLKF_HW_SUP, "l3_init_cm:clk:0018:24" }, + { OMAP4_USB_HOST_HS_CLKCTRL, omap4_usb_host_hs_bit_data, CLKF_SW_SUP, "init_60m_fclk" }, + { OMAP4_USB_OTG_HS_CLKCTRL, omap4_usb_otg_hs_bit_data, CLKF_HW_SUP, "l3_div_ck" }, + { OMAP4_USB_TLL_HS_CLKCTRL, omap4_usb_tll_hs_bit_data, CLKF_HW_SUP, "l4_div_ck" }, + { OMAP4_USB_HOST_FS_CLKCTRL, NULL, CLKF_SW_SUP, "func_48mc_fclk" }, + { OMAP4_OCP2SCP_USB_PHY_CLKCTRL, omap4_ocp2scp_usb_phy_bit_data, CLKF_HW_SUP, "l3_init_cm:clk:00c0:8" }, + { 0 }, +}; + +static const char * const omap4_cm2_dm10_mux_parents[] __initconst = { + "sys_clkin_ck", + "sys_32k_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_timer10_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_timer11_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_timer2_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_timer3_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_timer4_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_timer9_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_gpio2_dbclk_parents[] __initconst = { + "sys_32k_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_gpio2_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_gpio3_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_gpio4_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_gpio5_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_gpio6_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_per_mcbsp4_gfclk_parents[] __initconst = { + "l4_per_cm:clk:00c0:26", + "pad_clks_ck", + NULL, +}; + +static const char * const omap4_mcbsp4_sync_mux_ck_parents[] __initconst = { + "func_96m_fclk", + "per_abe_nc_fclk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_mcbsp4_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_per_mcbsp4_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap4_mcbsp4_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap4_slimbus2_fclk_0_parents[] __initconst = { + "func_24mc_fclk", + NULL, +}; + +static const char * const omap4_slimbus2_fclk_1_parents[] __initconst = { + "per_abe_24m_fclk", + NULL, +}; + +static const char * const omap4_slimbus2_slimbus_clk_parents[] __initconst = { + "pad_slimbus_core_clks_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap4_slimbus2_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_slimbus2_fclk_0_parents, NULL }, + { 9, TI_CLK_GATE, omap4_slimbus2_fclk_1_parents, NULL }, + { 10, TI_CLK_GATE, omap4_slimbus2_slimbus_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l4_per_clkctrl_regs[] __initconst = { + { OMAP4_TIMER10_CLKCTRL, omap4_timer10_bit_data, CLKF_SW_SUP, "l4_per_cm:clk:0008:24" }, + { OMAP4_TIMER11_CLKCTRL, omap4_timer11_bit_data, CLKF_SW_SUP, "l4_per_cm:clk:0010:24" }, + { OMAP4_TIMER2_CLKCTRL, omap4_timer2_bit_data, CLKF_SW_SUP, "l4_per_cm:clk:0018:24" }, + { OMAP4_TIMER3_CLKCTRL, omap4_timer3_bit_data, CLKF_SW_SUP, "l4_per_cm:clk:0020:24" }, + { OMAP4_TIMER4_CLKCTRL, omap4_timer4_bit_data, CLKF_SW_SUP, "l4_per_cm:clk:0028:24" }, + { OMAP4_TIMER9_CLKCTRL, omap4_timer9_bit_data, CLKF_SW_SUP, "l4_per_cm:clk:0030:24" }, + { OMAP4_ELM_CLKCTRL, NULL, 0, "l4_div_ck" }, + { OMAP4_GPIO2_CLKCTRL, omap4_gpio2_bit_data, CLKF_HW_SUP, "l4_div_ck" }, + { OMAP4_GPIO3_CLKCTRL, omap4_gpio3_bit_data, CLKF_HW_SUP, "l4_div_ck" }, + { OMAP4_GPIO4_CLKCTRL, omap4_gpio4_bit_data, CLKF_HW_SUP, "l4_div_ck" }, + { OMAP4_GPIO5_CLKCTRL, omap4_gpio5_bit_data, CLKF_HW_SUP, "l4_div_ck" }, + { OMAP4_GPIO6_CLKCTRL, omap4_gpio6_bit_data, CLKF_HW_SUP, "l4_div_ck" }, + { OMAP4_HDQ1W_CLKCTRL, NULL, CLKF_SW_SUP, "func_12m_fclk" }, + { OMAP4_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP4_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP4_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP4_I2C4_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP4_L4_PER_CLKCTRL, NULL, 0, "l4_div_ck" }, + { OMAP4_MCBSP4_CLKCTRL, omap4_mcbsp4_bit_data, CLKF_SW_SUP, "l4_per_cm:clk:00c0:24" }, + { OMAP4_MCSPI1_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_MCSPI2_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_MCSPI3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_MCSPI4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_MMC4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_SLIMBUS2_CLKCTRL, omap4_slimbus2_bit_data, CLKF_SW_SUP, "l4_per_cm:clk:0118:8" }, + { OMAP4_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_UART4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP4_MMC5_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_gpio1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap4_timer1_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_l4_wkup_clkctrl_regs[] __initconst = { + { OMAP4_L4_WKUP_CLKCTRL, NULL, 0, "l4_wkup_clk_mux_ck" }, + { OMAP4_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" }, + { OMAP4_GPIO1_CLKCTRL, omap4_gpio1_bit_data, CLKF_HW_SUP, "l4_wkup_clk_mux_ck" }, + { OMAP4_TIMER1_CLKCTRL, omap4_timer1_bit_data, CLKF_SW_SUP, "l4_wkup_cm:clk:0020:24" }, + { OMAP4_COUNTER_32K_CLKCTRL, NULL, 0, "sys_32k_ck" }, + { OMAP4_KBD_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" }, + { 0 }, +}; + +static const char * const omap4_pmd_stm_clock_mux_ck_parents[] __initconst = { + "sys_clkin_ck", + "dpll_core_m6x2_ck", + "tie_low_clock_ck", + NULL, +}; + +static const char * const omap4_trace_clk_div_div_ck_parents[] __initconst = { + "emu_sys_cm:clk:0000:22", + NULL, +}; + +static const int omap4_trace_clk_div_div_ck_divs[] __initconst = { + 0, + 1, + 2, + 0, + 4, + -1, +}; + +static const struct omap_clkctrl_div_data omap4_trace_clk_div_div_ck_data __initconst = { + .dividers = omap4_trace_clk_div_div_ck_divs, +}; + +static const char * const omap4_stm_clk_div_ck_parents[] __initconst = { + "emu_sys_cm:clk:0000:20", + NULL, +}; + +static const struct omap_clkctrl_div_data omap4_stm_clk_div_ck_data __initconst = { + .max_div = 64, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const struct omap_clkctrl_bit_data omap4_debugss_bit_data[] __initconst = { + { 20, TI_CLK_MUX, omap4_pmd_stm_clock_mux_ck_parents, NULL }, + { 22, TI_CLK_MUX, omap4_pmd_stm_clock_mux_ck_parents, NULL }, + { 24, TI_CLK_DIVIDER, omap4_trace_clk_div_div_ck_parents, &omap4_trace_clk_div_div_ck_data }, + { 27, TI_CLK_DIVIDER, omap4_stm_clk_div_ck_parents, &omap4_stm_clk_div_ck_data }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap4_emu_sys_clkctrl_regs[] __initconst = { + { OMAP4_DEBUGSS_CLKCTRL, omap4_debugss_bit_data, 0, "trace_clk_div_ck" }, + { 0 }, +}; + +const struct omap_clkctrl_data omap4_clkctrl_data[] __initconst = { + { 0x4a004320, omap4_mpuss_clkctrl_regs }, + { 0x4a004420, omap4_tesla_clkctrl_regs }, + { 0x4a004520, omap4_abe_clkctrl_regs }, + { 0x4a008620, omap4_l4_ao_clkctrl_regs }, + { 0x4a008720, omap4_l3_1_clkctrl_regs }, + { 0x4a008820, omap4_l3_2_clkctrl_regs }, + { 0x4a008920, omap4_ducati_clkctrl_regs }, + { 0x4a008a20, omap4_l3_dma_clkctrl_regs }, + { 0x4a008b20, omap4_l3_emif_clkctrl_regs }, + { 0x4a008c20, omap4_d2d_clkctrl_regs }, + { 0x4a008d20, omap4_l4_cfg_clkctrl_regs }, + { 0x4a008e20, omap4_l3_instr_clkctrl_regs }, + { 0x4a008f20, omap4_ivahd_clkctrl_regs }, + { 0x4a009020, omap4_iss_clkctrl_regs }, + { 0x4a009120, omap4_l3_dss_clkctrl_regs }, + { 0x4a009220, omap4_l3_gfx_clkctrl_regs }, + { 0x4a009320, omap4_l3_init_clkctrl_regs }, + { 0x4a009420, omap4_l4_per_clkctrl_regs }, + { 0x4a307820, omap4_l4_wkup_clkctrl_regs }, + { 0x4a307a20, omap4_emu_sys_clkctrl_regs }, + { 0 }, +}; + +static struct ti_dt_clk omap44xx_clks[] = { + DT_CLK(NULL, "timer_32k_ck", "sys_32k_ck"), + /* + * XXX: All the clock aliases below are only needed for legacy + * hwmod support. Once hwmod is removed, these can be removed + * also. + */ + DT_CLK(NULL, "aess_fclk", "abe_cm:0008:24"), + DT_CLK(NULL, "cm2_dm10_mux", "l4_per_cm:0008:24"), + DT_CLK(NULL, "cm2_dm11_mux", "l4_per_cm:0010:24"), + DT_CLK(NULL, "cm2_dm2_mux", "l4_per_cm:0018:24"), + DT_CLK(NULL, "cm2_dm3_mux", "l4_per_cm:0020:24"), + DT_CLK(NULL, "cm2_dm4_mux", "l4_per_cm:0028:24"), + DT_CLK(NULL, "cm2_dm9_mux", "l4_per_cm:0030:24"), + DT_CLK(NULL, "dmic_sync_mux_ck", "abe_cm:0018:26"), + DT_CLK(NULL, "dmt1_clk_mux", "l4_wkup_cm:0020:24"), + DT_CLK(NULL, "dss_48mhz_clk", "l3_dss_cm:0000:9"), + DT_CLK(NULL, "dss_dss_clk", "l3_dss_cm:0000:8"), + DT_CLK(NULL, "dss_sys_clk", "l3_dss_cm:0000:10"), + DT_CLK(NULL, "dss_tv_clk", "l3_dss_cm:0000:11"), + DT_CLK(NULL, "fdif_fck", "iss_cm:0008:24"), + DT_CLK(NULL, "func_dmic_abe_gfclk", "abe_cm:0018:24"), + DT_CLK(NULL, "func_mcasp_abe_gfclk", "abe_cm:0020:24"), + DT_CLK(NULL, "func_mcbsp1_gfclk", "abe_cm:0028:24"), + DT_CLK(NULL, "func_mcbsp2_gfclk", "abe_cm:0030:24"), + DT_CLK(NULL, "func_mcbsp3_gfclk", "abe_cm:0038:24"), + DT_CLK(NULL, "gpio1_dbclk", "l4_wkup_cm:0018:8"), + DT_CLK(NULL, "gpio2_dbclk", "l4_per_cm:0040:8"), + DT_CLK(NULL, "gpio3_dbclk", "l4_per_cm:0048:8"), + DT_CLK(NULL, "gpio4_dbclk", "l4_per_cm:0050:8"), + DT_CLK(NULL, "gpio5_dbclk", "l4_per_cm:0058:8"), + DT_CLK(NULL, "gpio6_dbclk", "l4_per_cm:0060:8"), + DT_CLK(NULL, "hsi_fck", "l3_init_cm:0018:24"), + DT_CLK(NULL, "hsmmc1_fclk", "l3_init_cm:0008:24"), + DT_CLK(NULL, "hsmmc2_fclk", "l3_init_cm:0010:24"), + DT_CLK(NULL, "iss_ctrlclk", "iss_cm:0000:8"), + DT_CLK(NULL, "mcasp_sync_mux_ck", "abe_cm:0020:26"), + DT_CLK(NULL, "mcbsp1_sync_mux_ck", "abe_cm:0028:26"), + DT_CLK(NULL, "mcbsp2_sync_mux_ck", "abe_cm:0030:26"), + DT_CLK(NULL, "mcbsp3_sync_mux_ck", "abe_cm:0038:26"), + DT_CLK(NULL, "mcbsp4_sync_mux_ck", "l4_per_cm:00c0:26"), + DT_CLK(NULL, "ocp2scp_usb_phy_phy_48m", "l3_init_cm:00c0:8"), + DT_CLK(NULL, "otg_60m_gfclk", "l3_init_cm:0040:24"), + DT_CLK(NULL, "per_mcbsp4_gfclk", "l4_per_cm:00c0:24"), + DT_CLK(NULL, "pmd_stm_clock_mux_ck", "emu_sys_cm:0000:20"), + DT_CLK(NULL, "pmd_trace_clk_mux_ck", "emu_sys_cm:0000:22"), + DT_CLK(NULL, "sgx_clk_mux", "l3_gfx_cm:0000:24"), + DT_CLK(NULL, "slimbus1_fclk_0", "abe_cm:0040:8"), + DT_CLK(NULL, "slimbus1_fclk_1", "abe_cm:0040:9"), + DT_CLK(NULL, "slimbus1_fclk_2", "abe_cm:0040:10"), + DT_CLK(NULL, "slimbus1_slimbus_clk", "abe_cm:0040:11"), + DT_CLK(NULL, "slimbus2_fclk_0", "l4_per_cm:0118:8"), + DT_CLK(NULL, "slimbus2_fclk_1", "l4_per_cm:0118:9"), + DT_CLK(NULL, "slimbus2_slimbus_clk", "l4_per_cm:0118:10"), + DT_CLK(NULL, "stm_clk_div_ck", "emu_sys_cm:0000:27"), + DT_CLK(NULL, "timer5_sync_mux", "abe_cm:0048:24"), + DT_CLK(NULL, "timer6_sync_mux", "abe_cm:0050:24"), + DT_CLK(NULL, "timer7_sync_mux", "abe_cm:0058:24"), + DT_CLK(NULL, "timer8_sync_mux", "abe_cm:0060:24"), + DT_CLK(NULL, "trace_clk_div_div_ck", "emu_sys_cm:0000:24"), + DT_CLK(NULL, "usb_host_hs_func48mclk", "l3_init_cm:0038:15"), + DT_CLK(NULL, "usb_host_hs_hsic480m_p1_clk", "l3_init_cm:0038:13"), + DT_CLK(NULL, "usb_host_hs_hsic480m_p2_clk", "l3_init_cm:0038:14"), + DT_CLK(NULL, "usb_host_hs_hsic60m_p1_clk", "l3_init_cm:0038:11"), + DT_CLK(NULL, "usb_host_hs_hsic60m_p2_clk", "l3_init_cm:0038:12"), + DT_CLK(NULL, "usb_host_hs_utmi_p1_clk", "l3_init_cm:0038:8"), + DT_CLK(NULL, "usb_host_hs_utmi_p2_clk", "l3_init_cm:0038:9"), + DT_CLK(NULL, "usb_host_hs_utmi_p3_clk", "l3_init_cm:0038:10"), + DT_CLK(NULL, "usb_otg_hs_xclk", "l3_init_cm:0040:8"), + DT_CLK(NULL, "usb_tll_hs_usb_ch0_clk", "l3_init_cm:0048:8"), + DT_CLK(NULL, "usb_tll_hs_usb_ch1_clk", "l3_init_cm:0048:9"), + DT_CLK(NULL, "usb_tll_hs_usb_ch2_clk", "l3_init_cm:0048:10"), + DT_CLK(NULL, "utmi_p1_gfclk", "l3_init_cm:0038:24"), + DT_CLK(NULL, "utmi_p2_gfclk", "l3_init_cm:0038:25"), + { .node_name = NULL }, +}; + +int __init omap4xxx_dt_clk_init(void) +{ + int rc; + struct clk *abe_dpll_ref, *abe_dpll, *sys_32k_ck, *usb_dpll; + + ti_dt_clocks_register(omap44xx_clks); + + omap2_clk_disable_autoidle_all(); + + ti_clk_add_aliases(); + + /* + * Lock USB DPLL on OMAP4 devices so that the L3INIT power + * domain can transition to retention state when not in use. + */ + usb_dpll = clk_get_sys(NULL, "dpll_usb_ck"); + rc = clk_set_rate(usb_dpll, OMAP4_DPLL_USB_DEFFREQ); + if (rc) + pr_err("%s: failed to configure USB DPLL!\n", __func__); + + /* + * On OMAP4460 the ABE DPLL fails to turn on if in idle low-power + * state when turning the ABE clock domain. Workaround this by + * locking the ABE DPLL on boot. + * Lock the ABE DPLL in any case to avoid issues with audio. + */ + abe_dpll_ref = clk_get_sys(NULL, "abe_dpll_refclk_mux_ck"); + sys_32k_ck = clk_get_sys(NULL, "sys_32k_ck"); + rc = clk_set_parent(abe_dpll_ref, sys_32k_ck); + abe_dpll = clk_get_sys(NULL, "dpll_abe_ck"); + if (!rc) + rc = clk_set_rate(abe_dpll, OMAP4_DPLL_ABE_DEFFREQ); + if (rc) + pr_err("%s: failed to configure ABE DPLL!\n", __func__); + + return 0; +} diff --git a/drivers/clk/ti/clk-54xx.c b/drivers/clk/ti/clk-54xx.c new file mode 100644 index 000000000..a17b0c464 --- /dev/null +++ b/drivers/clk/ti/clk-54xx.c @@ -0,0 +1,576 @@ +/* + * OMAP5 Clock init + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo (t-kristo@ti.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/io.h> +#include <linux/clk/ti.h> +#include <dt-bindings/clock/omap5.h> + +#include "clock.h" + +#define OMAP5_DPLL_ABE_DEFFREQ 98304000 + +/* + * OMAP543x TRM, section "3.6.3.9.5 DPLL_USB Preferred Settings" + * states it must be at 960MHz + */ +#define OMAP5_DPLL_USB_DEFFREQ 960000000 + +static const struct omap_clkctrl_reg_data omap5_mpu_clkctrl_regs[] __initconst = { + { OMAP5_MPU_CLKCTRL, NULL, 0, "dpll_mpu_m2_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_dsp_clkctrl_regs[] __initconst = { + { OMAP5_MMU_DSP_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_iva_h11x2_ck" }, + { 0 }, +}; + +static const char * const omap5_dmic_gfclk_parents[] __initconst = { + "abe_cm:clk:0018:26", + "pad_clks_ck", + "slimbus_clk", + NULL, +}; + +static const char * const omap5_dmic_sync_mux_ck_parents[] __initconst = { + "abe_24m_fclk", + "dss_syc_gfclk_div", + "func_24m_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_dmic_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_dmic_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap5_dmic_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap5_mcbsp1_gfclk_parents[] __initconst = { + "abe_cm:clk:0028:26", + "pad_clks_ck", + "slimbus_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_mcbsp1_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_mcbsp1_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap5_dmic_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap5_mcbsp2_gfclk_parents[] __initconst = { + "abe_cm:clk:0030:26", + "pad_clks_ck", + "slimbus_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_mcbsp2_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_mcbsp2_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap5_dmic_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap5_mcbsp3_gfclk_parents[] __initconst = { + "abe_cm:clk:0038:26", + "pad_clks_ck", + "slimbus_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_mcbsp3_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_mcbsp3_gfclk_parents, NULL }, + { 26, TI_CLK_MUX, omap5_dmic_sync_mux_ck_parents, NULL }, + { 0 }, +}; + +static const char * const omap5_timer5_gfclk_mux_parents[] __initconst = { + "dss_syc_gfclk_div", + "sys_32k_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_timer5_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer5_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_timer6_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer5_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_timer7_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer5_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_timer8_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer5_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_abe_clkctrl_regs[] __initconst = { + { OMAP5_L4_ABE_CLKCTRL, NULL, 0, "abe_iclk" }, + { OMAP5_MCPDM_CLKCTRL, NULL, CLKF_SW_SUP, "pad_clks_ck" }, + { OMAP5_DMIC_CLKCTRL, omap5_dmic_bit_data, CLKF_SW_SUP, "abe_cm:clk:0018:24" }, + { OMAP5_MCBSP1_CLKCTRL, omap5_mcbsp1_bit_data, CLKF_SW_SUP, "abe_cm:clk:0028:24" }, + { OMAP5_MCBSP2_CLKCTRL, omap5_mcbsp2_bit_data, CLKF_SW_SUP, "abe_cm:clk:0030:24" }, + { OMAP5_MCBSP3_CLKCTRL, omap5_mcbsp3_bit_data, CLKF_SW_SUP, "abe_cm:clk:0038:24" }, + { OMAP5_TIMER5_CLKCTRL, omap5_timer5_bit_data, CLKF_SW_SUP, "abe_cm:clk:0048:24" }, + { OMAP5_TIMER6_CLKCTRL, omap5_timer6_bit_data, CLKF_SW_SUP, "abe_cm:clk:0050:24" }, + { OMAP5_TIMER7_CLKCTRL, omap5_timer7_bit_data, CLKF_SW_SUP, "abe_cm:clk:0058:24" }, + { OMAP5_TIMER8_CLKCTRL, omap5_timer8_bit_data, CLKF_SW_SUP, "abe_cm:clk:0060:24" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_l3main1_clkctrl_regs[] __initconst = { + { OMAP5_L3_MAIN_1_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_l3main2_clkctrl_regs[] __initconst = { + { OMAP5_L3_MAIN_2_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_ipu_clkctrl_regs[] __initconst = { + { OMAP5_MMU_IPU_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_core_h22x2_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_dma_clkctrl_regs[] __initconst = { + { OMAP5_DMA_SYSTEM_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_emif_clkctrl_regs[] __initconst = { + { OMAP5_DMM_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { OMAP5_EMIF1_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_core_h11x2_ck" }, + { OMAP5_EMIF2_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_core_h11x2_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_l4cfg_clkctrl_regs[] __initconst = { + { OMAP5_L4_CFG_CLKCTRL, NULL, 0, "l4_root_clk_div" }, + { OMAP5_SPINLOCK_CLKCTRL, NULL, 0, "l4_root_clk_div" }, + { OMAP5_MAILBOX_CLKCTRL, NULL, 0, "l4_root_clk_div" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_l3instr_clkctrl_regs[] __initconst = { + { OMAP5_L3_MAIN_3_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div" }, + { OMAP5_L3_INSTR_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div" }, + { 0 }, +}; + +static const char * const omap5_timer10_gfclk_mux_parents[] __initconst = { + "sys_clkin", + "sys_32k_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_timer10_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_timer11_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_timer2_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_timer3_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_timer4_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_timer9_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const char * const omap5_gpio2_dbclk_parents[] __initconst = { + "sys_32k_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_gpio2_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_gpio3_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_gpio4_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_gpio5_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_gpio6_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_gpio7_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_gpio8_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_l4per_clkctrl_regs[] __initconst = { + { OMAP5_TIMER10_CLKCTRL, omap5_timer10_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0008:24" }, + { OMAP5_TIMER11_CLKCTRL, omap5_timer11_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0010:24" }, + { OMAP5_TIMER2_CLKCTRL, omap5_timer2_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0018:24" }, + { OMAP5_TIMER3_CLKCTRL, omap5_timer3_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0020:24" }, + { OMAP5_TIMER4_CLKCTRL, omap5_timer4_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0028:24" }, + { OMAP5_TIMER9_CLKCTRL, omap5_timer9_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0030:24" }, + { OMAP5_GPIO2_CLKCTRL, omap5_gpio2_bit_data, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_GPIO3_CLKCTRL, omap5_gpio3_bit_data, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_GPIO4_CLKCTRL, omap5_gpio4_bit_data, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_GPIO5_CLKCTRL, omap5_gpio5_bit_data, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_GPIO6_CLKCTRL, omap5_gpio6_bit_data, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP5_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP5_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP5_I2C4_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP5_L4_PER_CLKCTRL, NULL, 0, "l4_root_clk_div" }, + { OMAP5_MCSPI1_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_MCSPI2_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_MCSPI3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_MCSPI4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_GPIO7_CLKCTRL, omap5_gpio7_bit_data, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_GPIO8_CLKCTRL, omap5_gpio8_bit_data, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_MMC4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_UART4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_MMC5_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP5_I2C5_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { OMAP5_UART5_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_UART6_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { 0 }, +}; + +static const char * const omap5_dss_dss_clk_parents[] __initconst = { + "dpll_per_h12x2_ck", + NULL, +}; + +static const char * const omap5_dss_48mhz_clk_parents[] __initconst = { + "func_48m_fclk", + NULL, +}; + +static const char * const omap5_dss_sys_clk_parents[] __initconst = { + "dss_syc_gfclk_div", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_dss_core_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_dss_dss_clk_parents, NULL }, + { 9, TI_CLK_GATE, omap5_dss_48mhz_clk_parents, NULL }, + { 10, TI_CLK_GATE, omap5_dss_sys_clk_parents, NULL }, + { 11, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_dss_clkctrl_regs[] __initconst = { + { OMAP5_DSS_CORE_CLKCTRL, omap5_dss_core_bit_data, CLKF_SW_SUP, "dss_cm:clk:0000:8" }, + { 0 }, +}; + +static const char * const omap5_mmc1_fclk_mux_parents[] __initconst = { + "func_128m_clk", + "dpll_per_m2x2_ck", + NULL, +}; + +static const char * const omap5_mmc1_fclk_parents[] __initconst = { + "l3init_cm:clk:0008:24", + NULL, +}; + +static const struct omap_clkctrl_div_data omap5_mmc1_fclk_data __initconst = { + .max_div = 2, +}; + +static const struct omap_clkctrl_bit_data omap5_mmc1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 24, TI_CLK_MUX, omap5_mmc1_fclk_mux_parents, NULL }, + { 25, TI_CLK_DIVIDER, omap5_mmc1_fclk_parents, &omap5_mmc1_fclk_data }, + { 0 }, +}; + +static const char * const omap5_mmc2_fclk_parents[] __initconst = { + "l3init_cm:clk:0010:24", + NULL, +}; + +static const struct omap_clkctrl_div_data omap5_mmc2_fclk_data __initconst = { + .max_div = 2, +}; + +static const struct omap_clkctrl_bit_data omap5_mmc2_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_mmc1_fclk_mux_parents, NULL }, + { 25, TI_CLK_DIVIDER, omap5_mmc2_fclk_parents, &omap5_mmc2_fclk_data }, + { 0 }, +}; + +static const char * const omap5_usb_host_hs_hsic60m_p3_clk_parents[] __initconst = { + "l3init_60m_fclk", + NULL, +}; + +static const char * const omap5_usb_host_hs_hsic480m_p3_clk_parents[] __initconst = { + "dpll_usb_m2_ck", + NULL, +}; + +static const char * const omap5_usb_host_hs_utmi_p1_clk_parents[] __initconst = { + "l3init_cm:clk:0038:24", + NULL, +}; + +static const char * const omap5_usb_host_hs_utmi_p2_clk_parents[] __initconst = { + "l3init_cm:clk:0038:25", + NULL, +}; + +static const char * const omap5_utmi_p1_gfclk_parents[] __initconst = { + "l3init_60m_fclk", + "xclk60mhsp1_ck", + NULL, +}; + +static const char * const omap5_utmi_p2_gfclk_parents[] __initconst = { + "l3init_60m_fclk", + "xclk60mhsp2_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_usb_host_hs_bit_data[] __initconst = { + { 6, TI_CLK_GATE, omap5_usb_host_hs_hsic60m_p3_clk_parents, NULL }, + { 7, TI_CLK_GATE, omap5_usb_host_hs_hsic480m_p3_clk_parents, NULL }, + { 8, TI_CLK_GATE, omap5_usb_host_hs_utmi_p1_clk_parents, NULL }, + { 9, TI_CLK_GATE, omap5_usb_host_hs_utmi_p2_clk_parents, NULL }, + { 10, TI_CLK_GATE, omap5_usb_host_hs_hsic60m_p3_clk_parents, NULL }, + { 11, TI_CLK_GATE, omap5_usb_host_hs_hsic60m_p3_clk_parents, NULL }, + { 12, TI_CLK_GATE, omap5_usb_host_hs_hsic60m_p3_clk_parents, NULL }, + { 13, TI_CLK_GATE, omap5_usb_host_hs_hsic480m_p3_clk_parents, NULL }, + { 14, TI_CLK_GATE, omap5_usb_host_hs_hsic480m_p3_clk_parents, NULL }, + { 24, TI_CLK_MUX, omap5_utmi_p1_gfclk_parents, NULL }, + { 25, TI_CLK_MUX, omap5_utmi_p2_gfclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_usb_tll_hs_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_usb_host_hs_hsic60m_p3_clk_parents, NULL }, + { 9, TI_CLK_GATE, omap5_usb_host_hs_hsic60m_p3_clk_parents, NULL }, + { 10, TI_CLK_GATE, omap5_usb_host_hs_hsic60m_p3_clk_parents, NULL }, + { 0 }, +}; + +static const char * const omap5_sata_ref_clk_parents[] __initconst = { + "sys_clkin", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_sata_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_sata_ref_clk_parents, NULL }, + { 0 }, +}; + +static const char * const omap5_usb_otg_ss_refclk960m_parents[] __initconst = { + "dpll_usb_clkdcoldo", + NULL, +}; + +static const struct omap_clkctrl_bit_data omap5_usb_otg_ss_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_usb_otg_ss_refclk960m_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_l3init_clkctrl_regs[] __initconst = { + { OMAP5_MMC1_CLKCTRL, omap5_mmc1_bit_data, CLKF_SW_SUP, "l3init_cm:clk:0008:25" }, + { OMAP5_MMC2_CLKCTRL, omap5_mmc2_bit_data, CLKF_SW_SUP, "l3init_cm:clk:0010:25" }, + { OMAP5_USB_HOST_HS_CLKCTRL, omap5_usb_host_hs_bit_data, CLKF_SW_SUP, "l3init_60m_fclk" }, + { OMAP5_USB_TLL_HS_CLKCTRL, omap5_usb_tll_hs_bit_data, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_SATA_CLKCTRL, omap5_sata_bit_data, CLKF_SW_SUP, "func_48m_fclk" }, + { OMAP5_OCP2SCP1_CLKCTRL, NULL, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_OCP2SCP3_CLKCTRL, NULL, CLKF_HW_SUP, "l4_root_clk_div" }, + { OMAP5_USB_OTG_SS_CLKCTRL, omap5_usb_otg_ss_bit_data, CLKF_HW_SUP, "dpll_core_h13x2_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_gpio1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, omap5_gpio2_dbclk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data omap5_timer1_bit_data[] __initconst = { + { 24, TI_CLK_MUX, omap5_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data omap5_wkupaon_clkctrl_regs[] __initconst = { + { OMAP5_L4_WKUP_CLKCTRL, NULL, 0, "wkupaon_iclk_mux" }, + { OMAP5_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" }, + { OMAP5_GPIO1_CLKCTRL, omap5_gpio1_bit_data, CLKF_HW_SUP, "wkupaon_iclk_mux" }, + { OMAP5_TIMER1_CLKCTRL, omap5_timer1_bit_data, CLKF_SW_SUP, "wkupaon_cm:clk:0020:24" }, + { OMAP5_COUNTER_32K_CLKCTRL, NULL, 0, "wkupaon_iclk_mux" }, + { OMAP5_KBD_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" }, + { 0 }, +}; + +const struct omap_clkctrl_data omap5_clkctrl_data[] __initconst = { + { 0x4a004320, omap5_mpu_clkctrl_regs }, + { 0x4a004420, omap5_dsp_clkctrl_regs }, + { 0x4a004520, omap5_abe_clkctrl_regs }, + { 0x4a008720, omap5_l3main1_clkctrl_regs }, + { 0x4a008820, omap5_l3main2_clkctrl_regs }, + { 0x4a008920, omap5_ipu_clkctrl_regs }, + { 0x4a008a20, omap5_dma_clkctrl_regs }, + { 0x4a008b20, omap5_emif_clkctrl_regs }, + { 0x4a008d20, omap5_l4cfg_clkctrl_regs }, + { 0x4a008e20, omap5_l3instr_clkctrl_regs }, + { 0x4a009020, omap5_l4per_clkctrl_regs }, + { 0x4a009420, omap5_dss_clkctrl_regs }, + { 0x4a009620, omap5_l3init_clkctrl_regs }, + { 0x4ae07920, omap5_wkupaon_clkctrl_regs }, + { 0 }, +}; + +static struct ti_dt_clk omap54xx_clks[] = { + DT_CLK(NULL, "timer_32k_ck", "sys_32k_ck"), + DT_CLK(NULL, "sys_clkin_ck", "sys_clkin"), + DT_CLK(NULL, "dmic_gfclk", "abe_cm:0018:24"), + DT_CLK(NULL, "dmic_sync_mux_ck", "abe_cm:0018:26"), + DT_CLK(NULL, "dss_32khz_clk", "dss_cm:0000:11"), + DT_CLK(NULL, "dss_48mhz_clk", "dss_cm:0000:9"), + DT_CLK(NULL, "dss_dss_clk", "dss_cm:0000:8"), + DT_CLK(NULL, "dss_sys_clk", "dss_cm:0000:10"), + DT_CLK(NULL, "gpio1_dbclk", "wkupaon_cm:0018:8"), + DT_CLK(NULL, "gpio2_dbclk", "l4per_cm:0040:8"), + DT_CLK(NULL, "gpio3_dbclk", "l4per_cm:0048:8"), + DT_CLK(NULL, "gpio4_dbclk", "l4per_cm:0050:8"), + DT_CLK(NULL, "gpio5_dbclk", "l4per_cm:0058:8"), + DT_CLK(NULL, "gpio6_dbclk", "l4per_cm:0060:8"), + DT_CLK(NULL, "gpio7_dbclk", "l4per_cm:00f0:8"), + DT_CLK(NULL, "gpio8_dbclk", "l4per_cm:00f8:8"), + DT_CLK(NULL, "mcbsp1_gfclk", "abe_cm:0028:24"), + DT_CLK(NULL, "mcbsp1_sync_mux_ck", "abe_cm:0028:26"), + DT_CLK(NULL, "mcbsp2_gfclk", "abe_cm:0030:24"), + DT_CLK(NULL, "mcbsp2_sync_mux_ck", "abe_cm:0030:26"), + DT_CLK(NULL, "mcbsp3_gfclk", "abe_cm:0038:24"), + DT_CLK(NULL, "mcbsp3_sync_mux_ck", "abe_cm:0038:26"), + DT_CLK(NULL, "mmc1_32khz_clk", "l3init_cm:0008:8"), + DT_CLK(NULL, "mmc1_fclk", "l3init_cm:0008:25"), + DT_CLK(NULL, "mmc1_fclk_mux", "l3init_cm:0008:24"), + DT_CLK(NULL, "mmc2_fclk", "l3init_cm:0010:25"), + DT_CLK(NULL, "mmc2_fclk_mux", "l3init_cm:0010:24"), + DT_CLK(NULL, "sata_ref_clk", "l3init_cm:0068:8"), + DT_CLK(NULL, "timer10_gfclk_mux", "l4per_cm:0008:24"), + DT_CLK(NULL, "timer11_gfclk_mux", "l4per_cm:0010:24"), + DT_CLK(NULL, "timer1_gfclk_mux", "wkupaon_cm:0020:24"), + DT_CLK(NULL, "timer2_gfclk_mux", "l4per_cm:0018:24"), + DT_CLK(NULL, "timer3_gfclk_mux", "l4per_cm:0020:24"), + DT_CLK(NULL, "timer4_gfclk_mux", "l4per_cm:0028:24"), + DT_CLK(NULL, "timer5_gfclk_mux", "abe_cm:0048:24"), + DT_CLK(NULL, "timer6_gfclk_mux", "abe_cm:0050:24"), + DT_CLK(NULL, "timer7_gfclk_mux", "abe_cm:0058:24"), + DT_CLK(NULL, "timer8_gfclk_mux", "abe_cm:0060:24"), + DT_CLK(NULL, "timer9_gfclk_mux", "l4per_cm:0030:24"), + DT_CLK(NULL, "usb_host_hs_hsic480m_p1_clk", "l3init_cm:0038:13"), + DT_CLK(NULL, "usb_host_hs_hsic480m_p2_clk", "l3init_cm:0038:14"), + DT_CLK(NULL, "usb_host_hs_hsic480m_p3_clk", "l3init_cm:0038:7"), + DT_CLK(NULL, "usb_host_hs_hsic60m_p1_clk", "l3init_cm:0038:11"), + DT_CLK(NULL, "usb_host_hs_hsic60m_p2_clk", "l3init_cm:0038:12"), + DT_CLK(NULL, "usb_host_hs_hsic60m_p3_clk", "l3init_cm:0038:6"), + DT_CLK(NULL, "usb_host_hs_utmi_p1_clk", "l3init_cm:0038:8"), + DT_CLK(NULL, "usb_host_hs_utmi_p2_clk", "l3init_cm:0038:9"), + DT_CLK(NULL, "usb_host_hs_utmi_p3_clk", "l3init_cm:0038:10"), + DT_CLK(NULL, "usb_otg_ss_refclk960m", "l3init_cm:00d0:8"), + DT_CLK(NULL, "usb_tll_hs_usb_ch0_clk", "l3init_cm:0048:8"), + DT_CLK(NULL, "usb_tll_hs_usb_ch1_clk", "l3init_cm:0048:9"), + DT_CLK(NULL, "usb_tll_hs_usb_ch2_clk", "l3init_cm:0048:10"), + DT_CLK(NULL, "utmi_p1_gfclk", "l3init_cm:0038:24"), + DT_CLK(NULL, "utmi_p2_gfclk", "l3init_cm:0038:25"), + { .node_name = NULL }, +}; + +int __init omap5xxx_dt_clk_init(void) +{ + int rc; + struct clk *abe_dpll_ref, *abe_dpll, *sys_32k_ck, *usb_dpll; + + ti_dt_clocks_register(omap54xx_clks); + + omap2_clk_disable_autoidle_all(); + + ti_clk_add_aliases(); + + abe_dpll_ref = clk_get_sys(NULL, "abe_dpll_clk_mux"); + sys_32k_ck = clk_get_sys(NULL, "sys_32k_ck"); + rc = clk_set_parent(abe_dpll_ref, sys_32k_ck); + abe_dpll = clk_get_sys(NULL, "dpll_abe_ck"); + if (!rc) + rc = clk_set_rate(abe_dpll, OMAP5_DPLL_ABE_DEFFREQ); + if (rc) + pr_err("%s: failed to configure ABE DPLL!\n", __func__); + + abe_dpll = clk_get_sys(NULL, "dpll_abe_m2x2_ck"); + if (!rc) + rc = clk_set_rate(abe_dpll, OMAP5_DPLL_ABE_DEFFREQ * 2); + if (rc) + pr_err("%s: failed to configure ABE m2x2 DPLL!\n", __func__); + + usb_dpll = clk_get_sys(NULL, "dpll_usb_ck"); + rc = clk_set_rate(usb_dpll, OMAP5_DPLL_USB_DEFFREQ); + if (rc) + pr_err("%s: failed to configure USB DPLL!\n", __func__); + + usb_dpll = clk_get_sys(NULL, "dpll_usb_m2_ck"); + rc = clk_set_rate(usb_dpll, OMAP5_DPLL_USB_DEFFREQ/2); + if (rc) + pr_err("%s: failed to set USB_DPLL M2 OUT\n", __func__); + + return 0; +} diff --git a/drivers/clk/ti/clk-7xx.c b/drivers/clk/ti/clk-7xx.c new file mode 100644 index 000000000..b6d1ec49f --- /dev/null +++ b/drivers/clk/ti/clk-7xx.c @@ -0,0 +1,858 @@ +/* + * DRA7 Clock init + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo (t-kristo@ti.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/clk/ti.h> +#include <dt-bindings/clock/dra7.h> + +#include "clock.h" + +#define DRA7_DPLL_GMAC_DEFFREQ 1000000000 +#define DRA7_DPLL_USB_DEFFREQ 960000000 + +static const struct omap_clkctrl_reg_data dra7_mpu_clkctrl_regs[] __initconst = { + { DRA7_MPU_CLKCTRL, NULL, 0, "dpll_mpu_m2_ck" }, + { 0 }, +}; + +static const char * const dra7_mcasp1_aux_gfclk_mux_parents[] __initconst = { + "per_abe_x1_gfclk2_div", + "video1_clk2_div", + "video2_clk2_div", + "hdmi_clk2_div", + NULL, +}; + +static const char * const dra7_mcasp1_ahclkx_mux_parents[] __initconst = { + "abe_24m_fclk", + "abe_sys_clk_div", + "func_24m_clk", + "atl_clkin3_ck", + "atl_clkin2_ck", + "atl_clkin1_ck", + "atl_clkin0_ck", + "sys_clkin2", + "ref_clkin0_ck", + "ref_clkin1_ck", + "ref_clkin2_ck", + "ref_clkin3_ck", + "mlb_clk", + "mlbp_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_mcasp1_bit_data[] __initconst = { + { 22, TI_CLK_MUX, dra7_mcasp1_aux_gfclk_mux_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 28, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 0 }, +}; + +static const char * const dra7_timer5_gfclk_mux_parents[] __initconst = { + "timer_sys_clk_div", + "sys_32k_ck", + "sys_clkin2", + "ref_clkin0_ck", + "ref_clkin1_ck", + "ref_clkin2_ck", + "ref_clkin3_ck", + "abe_giclk_div", + "video1_div_clk", + "video2_div_clk", + "hdmi_div_clk", + "clkoutmux0_clk_mux", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_timer5_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer5_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer6_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer5_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer7_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer5_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer8_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer5_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const char * const dra7_uart6_gfclk_mux_parents[] __initconst = { + "func_48m_fclk", + "dpll_per_m2x2_ck", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_uart6_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_ipu_clkctrl_regs[] __initconst = { + { DRA7_MCASP1_CLKCTRL, dra7_mcasp1_bit_data, CLKF_SW_SUP, "ipu_cm:clk:0010:22" }, + { DRA7_TIMER5_CLKCTRL, dra7_timer5_bit_data, CLKF_SW_SUP, "ipu_cm:clk:0018:24" }, + { DRA7_TIMER6_CLKCTRL, dra7_timer6_bit_data, CLKF_SW_SUP, "ipu_cm:clk:0020:24" }, + { DRA7_TIMER7_CLKCTRL, dra7_timer7_bit_data, CLKF_SW_SUP, "ipu_cm:clk:0028:24" }, + { DRA7_TIMER8_CLKCTRL, dra7_timer8_bit_data, CLKF_SW_SUP, "ipu_cm:clk:0030:24" }, + { DRA7_I2C5_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { DRA7_UART6_CLKCTRL, dra7_uart6_bit_data, CLKF_SW_SUP, "ipu_cm:clk:0040:24" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_rtc_clkctrl_regs[] __initconst = { + { DRA7_RTCSS_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_coreaon_clkctrl_regs[] __initconst = { + { DRA7_SMARTREFLEX_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "wkupaon_iclk_mux" }, + { DRA7_SMARTREFLEX_CORE_CLKCTRL, NULL, CLKF_SW_SUP, "wkupaon_iclk_mux" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_l3main1_clkctrl_regs[] __initconst = { + { DRA7_L3_MAIN_1_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_GPMC_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_TPCC_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_TPTC0_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_TPTC1_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_VCP1_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_VCP2_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_dma_clkctrl_regs[] __initconst = { + { DRA7_DMA_SYSTEM_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_emif_clkctrl_regs[] __initconst = { + { DRA7_DMM_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { 0 }, +}; + +static const char * const dra7_atl_dpll_clk_mux_parents[] __initconst = { + "sys_32k_ck", + "video1_clkin_ck", + "video2_clkin_ck", + "hdmi_clkin_ck", + NULL, +}; + +static const char * const dra7_atl_gfclk_mux_parents[] __initconst = { + "l3_iclk_div", + "dpll_abe_m2_ck", + "atl_cm:clk:0000:24", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_atl_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_atl_dpll_clk_mux_parents, NULL }, + { 26, TI_CLK_MUX, dra7_atl_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_atl_clkctrl_regs[] __initconst = { + { DRA7_ATL_CLKCTRL, dra7_atl_bit_data, CLKF_SW_SUP, "atl_cm:clk:0000:26" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_l4cfg_clkctrl_regs[] __initconst = { + { DRA7_L4_CFG_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_SPINLOCK_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX1_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX2_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX3_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX4_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX5_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX6_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX7_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX8_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX9_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX10_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX11_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX12_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_MAILBOX13_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_l3instr_clkctrl_regs[] __initconst = { + { DRA7_L3_MAIN_2_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_L3_INSTR_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div" }, + { 0 }, +}; + +static const char * const dra7_dss_dss_clk_parents[] __initconst = { + "dpll_per_h12x2_ck", + NULL, +}; + +static const char * const dra7_dss_48mhz_clk_parents[] __initconst = { + "func_48m_fclk", + NULL, +}; + +static const char * const dra7_dss_hdmi_clk_parents[] __initconst = { + "hdmi_dpll_clk_mux", + NULL, +}; + +static const char * const dra7_dss_32khz_clk_parents[] __initconst = { + "sys_32k_ck", + NULL, +}; + +static const char * const dra7_dss_video1_clk_parents[] __initconst = { + "video1_dpll_clk_mux", + NULL, +}; + +static const char * const dra7_dss_video2_clk_parents[] __initconst = { + "video2_dpll_clk_mux", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_dss_core_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_dss_clk_parents, NULL }, + { 9, TI_CLK_GATE, dra7_dss_48mhz_clk_parents, NULL }, + { 10, TI_CLK_GATE, dra7_dss_hdmi_clk_parents, NULL }, + { 11, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 12, TI_CLK_GATE, dra7_dss_video1_clk_parents, NULL }, + { 13, TI_CLK_GATE, dra7_dss_video2_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_dss_clkctrl_regs[] __initconst = { + { DRA7_DSS_CORE_CLKCTRL, dra7_dss_core_bit_data, CLKF_SW_SUP, "dss_cm:clk:0000:8" }, + { DRA7_BB2D_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_core_h24x2_ck" }, + { 0 }, +}; + +static const char * const dra7_mmc1_fclk_mux_parents[] __initconst = { + "func_128m_clk", + "dpll_per_m2x2_ck", + NULL, +}; + +static const char * const dra7_mmc1_fclk_div_parents[] __initconst = { + "l3init_cm:clk:0008:24", + NULL, +}; + +static const struct omap_clkctrl_div_data dra7_mmc1_fclk_div_data __initconst = { + .max_div = 4, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const struct omap_clkctrl_bit_data dra7_mmc1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mmc1_fclk_mux_parents, NULL }, + { 25, TI_CLK_DIVIDER, dra7_mmc1_fclk_div_parents, &dra7_mmc1_fclk_div_data }, + { 0 }, +}; + +static const char * const dra7_mmc2_fclk_div_parents[] __initconst = { + "l3init_cm:clk:0010:24", + NULL, +}; + +static const struct omap_clkctrl_div_data dra7_mmc2_fclk_div_data __initconst = { + .max_div = 4, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const struct omap_clkctrl_bit_data dra7_mmc2_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mmc1_fclk_mux_parents, NULL }, + { 25, TI_CLK_DIVIDER, dra7_mmc2_fclk_div_parents, &dra7_mmc2_fclk_div_data }, + { 0 }, +}; + +static const char * const dra7_usb_otg_ss2_refclk960m_parents[] __initconst = { + "l3init_960m_gfclk", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_usb_otg_ss2_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_usb_otg_ss2_refclk960m_parents, NULL }, + { 0 }, +}; + +static const char * const dra7_sata_ref_clk_parents[] __initconst = { + "sys_clkin1", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_sata_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_sata_ref_clk_parents, NULL }, + { 0 }, +}; + +static const char * const dra7_optfclk_pciephy1_clk_parents[] __initconst = { + "apll_pcie_ck", + NULL, +}; + +static const char * const dra7_optfclk_pciephy1_div_clk_parents[] __initconst = { + "optfclk_pciephy_div", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_pcie1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 9, TI_CLK_GATE, dra7_optfclk_pciephy1_clk_parents, NULL }, + { 10, TI_CLK_GATE, dra7_optfclk_pciephy1_div_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_pcie2_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 9, TI_CLK_GATE, dra7_optfclk_pciephy1_clk_parents, NULL }, + { 10, TI_CLK_GATE, dra7_optfclk_pciephy1_div_clk_parents, NULL }, + { 0 }, +}; + +static const char * const dra7_rmii_50mhz_clk_mux_parents[] __initconst = { + "dpll_gmac_h11x2_ck", + "rmii_clk_ck", + NULL, +}; + +static const char * const dra7_gmac_rft_clk_mux_parents[] __initconst = { + "video1_clkin_ck", + "video2_clkin_ck", + "dpll_abe_m2_ck", + "hdmi_clkin_ck", + "l3_iclk_div", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_gmac_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_rmii_50mhz_clk_mux_parents, NULL }, + { 25, TI_CLK_MUX, dra7_gmac_rft_clk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_usb_otg_ss1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_usb_otg_ss2_refclk960m_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_l3init_clkctrl_regs[] __initconst = { + { DRA7_MMC1_CLKCTRL, dra7_mmc1_bit_data, CLKF_SW_SUP, "l3init_cm:clk:0008:25" }, + { DRA7_MMC2_CLKCTRL, dra7_mmc2_bit_data, CLKF_SW_SUP, "l3init_cm:clk:0010:25" }, + { DRA7_USB_OTG_SS2_CLKCTRL, dra7_usb_otg_ss2_bit_data, CLKF_HW_SUP, "dpll_core_h13x2_ck" }, + { DRA7_USB_OTG_SS3_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_core_h13x2_ck" }, + { DRA7_USB_OTG_SS4_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_core_h13x2_ck" }, + { DRA7_SATA_CLKCTRL, dra7_sata_bit_data, CLKF_SW_SUP, "func_48m_fclk" }, + { DRA7_PCIE1_CLKCTRL, dra7_pcie1_bit_data, CLKF_SW_SUP, "l4_root_clk_div", "pcie_clkdm" }, + { DRA7_PCIE2_CLKCTRL, dra7_pcie2_bit_data, CLKF_SW_SUP, "l4_root_clk_div", "pcie_clkdm" }, + { DRA7_GMAC_CLKCTRL, dra7_gmac_bit_data, CLKF_SW_SUP, "dpll_gmac_ck", "gmac_clkdm" }, + { DRA7_OCP2SCP1_CLKCTRL, NULL, CLKF_HW_SUP, "l4_root_clk_div" }, + { DRA7_OCP2SCP3_CLKCTRL, NULL, CLKF_HW_SUP, "l4_root_clk_div" }, + { DRA7_USB_OTG_SS1_CLKCTRL, dra7_usb_otg_ss1_bit_data, CLKF_HW_SUP, "dpll_core_h13x2_ck" }, + { 0 }, +}; + +static const char * const dra7_timer10_gfclk_mux_parents[] __initconst = { + "timer_sys_clk_div", + "sys_32k_ck", + "sys_clkin2", + "ref_clkin0_ck", + "ref_clkin1_ck", + "ref_clkin2_ck", + "ref_clkin3_ck", + "abe_giclk_div", + "video1_div_clk", + "video2_div_clk", + "hdmi_div_clk", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_timer10_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer11_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer2_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer3_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer4_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer9_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_gpio2_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_gpio3_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_gpio4_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_gpio5_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_gpio6_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer13_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer14_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer15_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_gpio7_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_gpio8_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 0 }, +}; + +static const char * const dra7_mmc3_gfclk_div_parents[] __initconst = { + "l4per_cm:clk:0120:24", + NULL, +}; + +static const struct omap_clkctrl_div_data dra7_mmc3_gfclk_div_data __initconst = { + .max_div = 4, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const struct omap_clkctrl_bit_data dra7_mmc3_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 25, TI_CLK_DIVIDER, dra7_mmc3_gfclk_div_parents, &dra7_mmc3_gfclk_div_data }, + { 0 }, +}; + +static const char * const dra7_mmc4_gfclk_div_parents[] __initconst = { + "l4per_cm:clk:0128:24", + NULL, +}; + +static const struct omap_clkctrl_div_data dra7_mmc4_gfclk_div_data __initconst = { + .max_div = 4, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const struct omap_clkctrl_bit_data dra7_mmc4_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 25, TI_CLK_DIVIDER, dra7_mmc4_gfclk_div_parents, &dra7_mmc4_gfclk_div_data }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer16_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const char * const dra7_qspi_gfclk_mux_parents[] __initconst = { + "func_128m_clk", + "dpll_per_h13x2_ck", + NULL, +}; + +static const char * const dra7_qspi_gfclk_div_parents[] __initconst = { + "l4per_cm:clk:0138:24", + NULL, +}; + +static const struct omap_clkctrl_div_data dra7_qspi_gfclk_div_data __initconst = { + .max_div = 4, + .flags = CLK_DIVIDER_POWER_OF_TWO, +}; + +static const struct omap_clkctrl_bit_data dra7_qspi_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_qspi_gfclk_mux_parents, NULL }, + { 25, TI_CLK_DIVIDER, dra7_qspi_gfclk_div_parents, &dra7_qspi_gfclk_div_data }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_uart1_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_uart2_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_uart3_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_uart4_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_mcasp2_bit_data[] __initconst = { + { 22, TI_CLK_MUX, dra7_mcasp1_aux_gfclk_mux_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 28, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_mcasp3_bit_data[] __initconst = { + { 22, TI_CLK_MUX, dra7_mcasp1_aux_gfclk_mux_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_uart5_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_mcasp5_bit_data[] __initconst = { + { 22, TI_CLK_MUX, dra7_mcasp1_aux_gfclk_mux_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_mcasp8_bit_data[] __initconst = { + { 22, TI_CLK_MUX, dra7_mcasp1_aux_gfclk_mux_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_mcasp4_bit_data[] __initconst = { + { 22, TI_CLK_MUX, dra7_mcasp1_aux_gfclk_mux_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_uart7_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_uart8_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_uart9_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_mcasp6_bit_data[] __initconst = { + { 22, TI_CLK_MUX, dra7_mcasp1_aux_gfclk_mux_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_mcasp7_bit_data[] __initconst = { + { 22, TI_CLK_MUX, dra7_mcasp1_aux_gfclk_mux_parents, NULL }, + { 24, TI_CLK_MUX, dra7_mcasp1_ahclkx_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_l4per_clkctrl_regs[] __initconst = { + { DRA7_L4_PER2_CLKCTRL, NULL, 0, "l3_iclk_div", "l4per2_clkdm" }, + { DRA7_L4_PER3_CLKCTRL, NULL, 0, "l3_iclk_div", "l4per3_clkdm" }, + { DRA7_TIMER10_CLKCTRL, dra7_timer10_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0028:24" }, + { DRA7_TIMER11_CLKCTRL, dra7_timer11_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0030:24" }, + { DRA7_TIMER2_CLKCTRL, dra7_timer2_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0038:24" }, + { DRA7_TIMER3_CLKCTRL, dra7_timer3_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0040:24" }, + { DRA7_TIMER4_CLKCTRL, dra7_timer4_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0048:24" }, + { DRA7_TIMER9_CLKCTRL, dra7_timer9_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0050:24" }, + { DRA7_ELM_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_GPIO2_CLKCTRL, dra7_gpio2_bit_data, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_GPIO3_CLKCTRL, dra7_gpio3_bit_data, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_GPIO4_CLKCTRL, dra7_gpio4_bit_data, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_GPIO5_CLKCTRL, dra7_gpio5_bit_data, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_GPIO6_CLKCTRL, dra7_gpio6_bit_data, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_HDQ1W_CLKCTRL, NULL, CLKF_SW_SUP, "func_12m_fclk" }, + { DRA7_EPWMSS1_CLKCTRL, NULL, CLKF_SW_SUP, "l4_root_clk_div", "l4per2_clkdm" }, + { DRA7_EPWMSS2_CLKCTRL, NULL, CLKF_SW_SUP, "l4_root_clk_div", "l4per2_clkdm" }, + { DRA7_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { DRA7_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { DRA7_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { DRA7_I2C4_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" }, + { DRA7_L4_PER1_CLKCTRL, NULL, 0, "l3_iclk_div" }, + { DRA7_EPWMSS0_CLKCTRL, NULL, CLKF_SW_SUP, "l4_root_clk_div", "l4per2_clkdm" }, + { DRA7_TIMER13_CLKCTRL, dra7_timer13_bit_data, CLKF_SW_SUP, "l4per_cm:clk:00c8:24", "l4per3_clkdm" }, + { DRA7_TIMER14_CLKCTRL, dra7_timer14_bit_data, CLKF_SW_SUP, "l4per_cm:clk:00d0:24", "l4per3_clkdm" }, + { DRA7_TIMER15_CLKCTRL, dra7_timer15_bit_data, CLKF_SW_SUP, "l4per_cm:clk:00d8:24", "l4per3_clkdm" }, + { DRA7_MCSPI1_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { DRA7_MCSPI2_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { DRA7_MCSPI3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { DRA7_MCSPI4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" }, + { DRA7_GPIO7_CLKCTRL, dra7_gpio7_bit_data, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_GPIO8_CLKCTRL, dra7_gpio8_bit_data, CLKF_HW_SUP, "l3_iclk_div" }, + { DRA7_MMC3_CLKCTRL, dra7_mmc3_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0120:25" }, + { DRA7_MMC4_CLKCTRL, dra7_mmc4_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0128:25" }, + { DRA7_TIMER16_CLKCTRL, dra7_timer16_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0130:24", "l4per3_clkdm" }, + { DRA7_QSPI_CLKCTRL, dra7_qspi_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0138:25", "l4per2_clkdm" }, + { DRA7_UART1_CLKCTRL, dra7_uart1_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0140:24" }, + { DRA7_UART2_CLKCTRL, dra7_uart2_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0148:24" }, + { DRA7_UART3_CLKCTRL, dra7_uart3_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0150:24" }, + { DRA7_UART4_CLKCTRL, dra7_uart4_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0158:24" }, + { DRA7_MCASP2_CLKCTRL, dra7_mcasp2_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0160:22", "l4per2_clkdm" }, + { DRA7_MCASP3_CLKCTRL, dra7_mcasp3_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0168:22", "l4per2_clkdm" }, + { DRA7_UART5_CLKCTRL, dra7_uart5_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0170:24" }, + { DRA7_MCASP5_CLKCTRL, dra7_mcasp5_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0178:22", "l4per2_clkdm" }, + { DRA7_MCASP8_CLKCTRL, dra7_mcasp8_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0190:24", "l4per2_clkdm" }, + { DRA7_MCASP4_CLKCTRL, dra7_mcasp4_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0198:22", "l4per2_clkdm" }, + { DRA7_AES1_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div", "l4sec_clkdm" }, + { DRA7_AES2_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div", "l4sec_clkdm" }, + { DRA7_DES_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div", "l4sec_clkdm" }, + { DRA7_RNG_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div", "l4sec_clkdm" }, + { DRA7_SHAM_CLKCTRL, NULL, CLKF_HW_SUP, "l3_iclk_div", "l4sec_clkdm" }, + { DRA7_UART7_CLKCTRL, dra7_uart7_bit_data, CLKF_SW_SUP, "l4per_cm:clk:01d0:24", "l4per2_clkdm" }, + { DRA7_UART8_CLKCTRL, dra7_uart8_bit_data, CLKF_SW_SUP, "l4per_cm:clk:01e0:24", "l4per2_clkdm" }, + { DRA7_UART9_CLKCTRL, dra7_uart9_bit_data, CLKF_SW_SUP, "l4per_cm:clk:01e8:24", "l4per2_clkdm" }, + { DRA7_DCAN2_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin1", "l4per2_clkdm" }, + { DRA7_MCASP6_CLKCTRL, dra7_mcasp6_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0204:22", "l4per2_clkdm" }, + { DRA7_MCASP7_CLKCTRL, dra7_mcasp7_bit_data, CLKF_SW_SUP, "l4per_cm:clk:0208:22", "l4per2_clkdm" }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_gpio1_bit_data[] __initconst = { + { 8, TI_CLK_GATE, dra7_dss_32khz_clk_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_timer1_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_timer10_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_bit_data dra7_uart10_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_uart6_gfclk_mux_parents, NULL }, + { 0 }, +}; + +static const char * const dra7_dcan1_sys_clk_mux_parents[] __initconst = { + "sys_clkin1", + "sys_clkin2", + NULL, +}; + +static const struct omap_clkctrl_bit_data dra7_dcan1_bit_data[] __initconst = { + { 24, TI_CLK_MUX, dra7_dcan1_sys_clk_mux_parents, NULL }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dra7_wkupaon_clkctrl_regs[] __initconst = { + { DRA7_L4_WKUP_CLKCTRL, NULL, 0, "wkupaon_iclk_mux" }, + { DRA7_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" }, + { DRA7_GPIO1_CLKCTRL, dra7_gpio1_bit_data, CLKF_HW_SUP, "wkupaon_iclk_mux" }, + { DRA7_TIMER1_CLKCTRL, dra7_timer1_bit_data, CLKF_SW_SUP, "wkupaon_cm:clk:0020:24" }, + { DRA7_TIMER12_CLKCTRL, NULL, 0, "secure_32k_clk_src_ck" }, + { DRA7_COUNTER_32K_CLKCTRL, NULL, 0, "wkupaon_iclk_mux" }, + { DRA7_UART10_CLKCTRL, dra7_uart10_bit_data, CLKF_SW_SUP, "wkupaon_cm:clk:0060:24" }, + { DRA7_DCAN1_CLKCTRL, dra7_dcan1_bit_data, CLKF_SW_SUP, "wkupaon_cm:clk:0068:24" }, + { DRA7_ADC_CLKCTRL, NULL, CLKF_SW_SUP, "mcan_clk"}, + { 0 }, +}; + +const struct omap_clkctrl_data dra7_clkctrl_data[] __initconst = { + { 0x4a005320, dra7_mpu_clkctrl_regs }, + { 0x4a005540, dra7_ipu_clkctrl_regs }, + { 0x4a005740, dra7_rtc_clkctrl_regs }, + { 0x4a008620, dra7_coreaon_clkctrl_regs }, + { 0x4a008720, dra7_l3main1_clkctrl_regs }, + { 0x4a008a20, dra7_dma_clkctrl_regs }, + { 0x4a008b20, dra7_emif_clkctrl_regs }, + { 0x4a008c00, dra7_atl_clkctrl_regs }, + { 0x4a008d20, dra7_l4cfg_clkctrl_regs }, + { 0x4a008e20, dra7_l3instr_clkctrl_regs }, + { 0x4a009120, dra7_dss_clkctrl_regs }, + { 0x4a009320, dra7_l3init_clkctrl_regs }, + { 0x4a009700, dra7_l4per_clkctrl_regs }, + { 0x4ae07820, dra7_wkupaon_clkctrl_regs }, + { 0 }, +}; + +static struct ti_dt_clk dra7xx_clks[] = { + DT_CLK(NULL, "timer_32k_ck", "sys_32k_ck"), + DT_CLK(NULL, "sys_clkin_ck", "timer_sys_clk_div"), + DT_CLK(NULL, "timer_sys_ck", "timer_sys_clk_div"), + DT_CLK(NULL, "sys_clkin", "sys_clkin1"), + DT_CLK(NULL, "atl_dpll_clk_mux", "atl_cm:0000:24"), + DT_CLK(NULL, "atl_gfclk_mux", "atl_cm:0000:26"), + DT_CLK(NULL, "dcan1_sys_clk_mux", "wkupaon_cm:0068:24"), + DT_CLK(NULL, "dss_32khz_clk", "dss_cm:0000:11"), + DT_CLK(NULL, "dss_48mhz_clk", "dss_cm:0000:9"), + DT_CLK(NULL, "dss_dss_clk", "dss_cm:0000:8"), + DT_CLK(NULL, "dss_hdmi_clk", "dss_cm:0000:10"), + DT_CLK(NULL, "dss_video1_clk", "dss_cm:0000:12"), + DT_CLK(NULL, "dss_video2_clk", "dss_cm:0000:13"), + DT_CLK(NULL, "gmac_rft_clk_mux", "l3init_cm:00b0:25"), + DT_CLK(NULL, "gpio1_dbclk", "wkupaon_cm:0018:8"), + DT_CLK(NULL, "gpio2_dbclk", "l4per_cm:0060:8"), + DT_CLK(NULL, "gpio3_dbclk", "l4per_cm:0068:8"), + DT_CLK(NULL, "gpio4_dbclk", "l4per_cm:0070:8"), + DT_CLK(NULL, "gpio5_dbclk", "l4per_cm:0078:8"), + DT_CLK(NULL, "gpio6_dbclk", "l4per_cm:0080:8"), + DT_CLK(NULL, "gpio7_dbclk", "l4per_cm:0110:8"), + DT_CLK(NULL, "gpio8_dbclk", "l4per_cm:0118:8"), + DT_CLK(NULL, "mcasp1_ahclkr_mux", "ipu_cm:0010:28"), + DT_CLK(NULL, "mcasp1_ahclkx_mux", "ipu_cm:0010:24"), + DT_CLK(NULL, "mcasp1_aux_gfclk_mux", "ipu_cm:0010:22"), + DT_CLK(NULL, "mcasp2_ahclkr_mux", "l4per_cm:0160:28"), + DT_CLK(NULL, "mcasp2_ahclkx_mux", "l4per_cm:0160:24"), + DT_CLK(NULL, "mcasp2_aux_gfclk_mux", "l4per_cm:0160:22"), + DT_CLK(NULL, "mcasp3_ahclkx_mux", "l4per_cm:0168:24"), + DT_CLK(NULL, "mcasp3_aux_gfclk_mux", "l4per_cm:0168:22"), + DT_CLK(NULL, "mcasp4_ahclkx_mux", "l4per_cm:0198:24"), + DT_CLK(NULL, "mcasp4_aux_gfclk_mux", "l4per_cm:0198:22"), + DT_CLK(NULL, "mcasp5_ahclkx_mux", "l4per_cm:0178:24"), + DT_CLK(NULL, "mcasp5_aux_gfclk_mux", "l4per_cm:0178:22"), + DT_CLK(NULL, "mcasp6_ahclkx_mux", "l4per_cm:0204:24"), + DT_CLK(NULL, "mcasp6_aux_gfclk_mux", "l4per_cm:0204:22"), + DT_CLK(NULL, "mcasp7_ahclkx_mux", "l4per_cm:0208:24"), + DT_CLK(NULL, "mcasp7_aux_gfclk_mux", "l4per_cm:0208:22"), + DT_CLK(NULL, "mcasp8_ahclkx_mux", "l4per_cm:0190:22"), + DT_CLK(NULL, "mcasp8_aux_gfclk_mux", "l4per_cm:0190:24"), + DT_CLK(NULL, "mmc1_clk32k", "l3init_cm:0008:8"), + DT_CLK(NULL, "mmc1_fclk_div", "l3init_cm:0008:25"), + DT_CLK(NULL, "mmc1_fclk_mux", "l3init_cm:0008:24"), + DT_CLK(NULL, "mmc2_clk32k", "l3init_cm:0010:8"), + DT_CLK(NULL, "mmc2_fclk_div", "l3init_cm:0010:25"), + DT_CLK(NULL, "mmc2_fclk_mux", "l3init_cm:0010:24"), + DT_CLK(NULL, "mmc3_clk32k", "l4per_cm:0120:8"), + DT_CLK(NULL, "mmc3_gfclk_div", "l4per_cm:0120:25"), + DT_CLK(NULL, "mmc3_gfclk_mux", "l4per_cm:0120:24"), + DT_CLK(NULL, "mmc4_clk32k", "l4per_cm:0128:8"), + DT_CLK(NULL, "mmc4_gfclk_div", "l4per_cm:0128:25"), + DT_CLK(NULL, "mmc4_gfclk_mux", "l4per_cm:0128:24"), + DT_CLK(NULL, "optfclk_pciephy1_32khz", "l3init_cm:0090:8"), + DT_CLK(NULL, "optfclk_pciephy1_clk", "l3init_cm:0090:9"), + DT_CLK(NULL, "optfclk_pciephy1_div_clk", "l3init_cm:0090:10"), + DT_CLK(NULL, "optfclk_pciephy2_32khz", "l3init_cm:0098:8"), + DT_CLK(NULL, "optfclk_pciephy2_clk", "l3init_cm:0098:9"), + DT_CLK(NULL, "optfclk_pciephy2_div_clk", "l3init_cm:0098:10"), + DT_CLK(NULL, "qspi_gfclk_div", "l4per_cm:0138:25"), + DT_CLK(NULL, "qspi_gfclk_mux", "l4per_cm:0138:24"), + DT_CLK(NULL, "rmii_50mhz_clk_mux", "l3init_cm:00b0:24"), + DT_CLK(NULL, "sata_ref_clk", "l3init_cm:0068:8"), + DT_CLK(NULL, "timer10_gfclk_mux", "l4per_cm:0028:24"), + DT_CLK(NULL, "timer11_gfclk_mux", "l4per_cm:0030:24"), + DT_CLK(NULL, "timer13_gfclk_mux", "l4per_cm:00c8:24"), + DT_CLK(NULL, "timer14_gfclk_mux", "l4per_cm:00d0:24"), + DT_CLK(NULL, "timer15_gfclk_mux", "l4per_cm:00d8:24"), + DT_CLK(NULL, "timer16_gfclk_mux", "l4per_cm:0130:24"), + DT_CLK(NULL, "timer1_gfclk_mux", "wkupaon_cm:0020:24"), + DT_CLK(NULL, "timer2_gfclk_mux", "l4per_cm:0038:24"), + DT_CLK(NULL, "timer3_gfclk_mux", "l4per_cm:0040:24"), + DT_CLK(NULL, "timer4_gfclk_mux", "l4per_cm:0048:24"), + DT_CLK(NULL, "timer5_gfclk_mux", "ipu_cm:0018:24"), + DT_CLK(NULL, "timer6_gfclk_mux", "ipu_cm:0020:24"), + DT_CLK(NULL, "timer7_gfclk_mux", "ipu_cm:0028:24"), + DT_CLK(NULL, "timer8_gfclk_mux", "ipu_cm:0030:24"), + DT_CLK(NULL, "timer9_gfclk_mux", "l4per_cm:0050:24"), + DT_CLK(NULL, "uart10_gfclk_mux", "wkupaon_cm:0060:24"), + DT_CLK(NULL, "uart1_gfclk_mux", "l4per_cm:0140:24"), + DT_CLK(NULL, "uart2_gfclk_mux", "l4per_cm:0148:24"), + DT_CLK(NULL, "uart3_gfclk_mux", "l4per_cm:0150:24"), + DT_CLK(NULL, "uart4_gfclk_mux", "l4per_cm:0158:24"), + DT_CLK(NULL, "uart5_gfclk_mux", "l4per_cm:0170:24"), + DT_CLK(NULL, "uart6_gfclk_mux", "ipu_cm:0040:24"), + DT_CLK(NULL, "uart7_gfclk_mux", "l4per_cm:01d0:24"), + DT_CLK(NULL, "uart8_gfclk_mux", "l4per_cm:01e0:24"), + DT_CLK(NULL, "uart9_gfclk_mux", "l4per_cm:01e8:24"), + DT_CLK(NULL, "usb_otg_ss1_refclk960m", "l3init_cm:00d0:8"), + DT_CLK(NULL, "usb_otg_ss2_refclk960m", "l3init_cm:0020:8"), + { .node_name = NULL }, +}; + +int __init dra7xx_dt_clk_init(void) +{ + int rc; + struct clk *dpll_ck, *hdcp_ck; + + ti_dt_clocks_register(dra7xx_clks); + + omap2_clk_disable_autoidle_all(); + + ti_clk_add_aliases(); + + dpll_ck = clk_get_sys(NULL, "dpll_gmac_ck"); + rc = clk_set_rate(dpll_ck, DRA7_DPLL_GMAC_DEFFREQ); + if (rc) + pr_err("%s: failed to configure GMAC DPLL!\n", __func__); + + dpll_ck = clk_get_sys(NULL, "dpll_usb_ck"); + rc = clk_set_rate(dpll_ck, DRA7_DPLL_USB_DEFFREQ); + if (rc) + pr_err("%s: failed to configure USB DPLL!\n", __func__); + + dpll_ck = clk_get_sys(NULL, "dpll_usb_m2_ck"); + rc = clk_set_rate(dpll_ck, DRA7_DPLL_USB_DEFFREQ/2); + if (rc) + pr_err("%s: failed to set USB_DPLL M2 OUT\n", __func__); + + hdcp_ck = clk_get_sys(NULL, "dss_deshdcp_clk"); + rc = clk_prepare_enable(hdcp_ck); + if (rc) + pr_err("%s: failed to set dss_deshdcp_clk\n", __func__); + + return rc; +} diff --git a/drivers/clk/ti/clk-814x.c b/drivers/clk/ti/clk-814x.c new file mode 100644 index 000000000..f688fdd2c --- /dev/null +++ b/drivers/clk/ti/clk-814x.c @@ -0,0 +1,116 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + */ + +#include <linux/kernel.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clk/ti.h> +#include <linux/of_platform.h> +#include <dt-bindings/clock/dm814.h> + +#include "clock.h" + +static const struct omap_clkctrl_reg_data dm814_default_clkctrl_regs[] __initconst = { + { DM814_USB_OTG_HS_CLKCTRL, NULL, CLKF_SW_SUP, "pll260dcoclkldo" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dm814_alwon_clkctrl_regs[] __initconst = { + { DM814_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM814_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM814_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM814_GPIO1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, + { DM814_GPIO2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, + { DM814_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM814_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM814_WD_TIMER_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" }, + { DM814_MCSPI1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM814_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, + { DM814_CPGMAC0_CLKCTRL, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk" }, + { DM814_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "mpu_ck" }, + { DM814_RTC_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" }, + { DM814_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { DM814_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { DM814_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { DM814_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { DM814_TPTC3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { DM814_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk8_ck" }, + { DM814_MMC2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk8_ck" }, + { DM814_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk8_ck" }, + { 0 }, +}; + +const struct omap_clkctrl_data dm814_clkctrl_data[] __initconst = { + { 0x48180500, dm814_default_clkctrl_regs }, + { 0x48181400, dm814_alwon_clkctrl_regs }, + { 0 }, +}; + +static struct ti_dt_clk dm814_clks[] = { + DT_CLK(NULL, "timer_sys_ck", "devosc_ck"), + { .node_name = NULL }, +}; + +static bool timer_clocks_initialized; + +static int __init dm814x_adpll_early_init(void) +{ + struct device_node *np; + + if (!timer_clocks_initialized) + return -ENODEV; + + np = of_find_node_by_name(NULL, "pllss"); + if (!np) { + pr_err("Could not find node for plls\n"); + return -ENODEV; + } + + of_platform_populate(np, NULL, NULL, NULL); + + return 0; +} +core_initcall(dm814x_adpll_early_init); + +static const char * const init_clocks[] = { + "pll040clkout", /* MPU 481c5040.adpll.clkout */ + "pll290clkout", /* DDR 481c5290.adpll.clkout */ +}; + +static int __init dm814x_adpll_enable_init_clocks(void) +{ + int i, err; + + if (!timer_clocks_initialized) + return -ENODEV; + + for (i = 0; i < ARRAY_SIZE(init_clocks); i++) { + struct clk *clock; + + clock = clk_get(NULL, init_clocks[i]); + if (WARN(IS_ERR(clock), "could not find init clock %s\n", + init_clocks[i])) + continue; + err = clk_prepare_enable(clock); + if (WARN(err, "could not enable init clock %s\n", + init_clocks[i])) + continue; + } + + return 0; +} +postcore_initcall(dm814x_adpll_enable_init_clocks); + +int __init dm814x_dt_clk_init(void) +{ + ti_dt_clocks_register(dm814_clks); + omap2_clk_disable_autoidle_all(); + ti_clk_add_aliases(); + omap2_clk_enable_init_clocks(NULL, 0); + timer_clocks_initialized = true; + + return 0; +} diff --git a/drivers/clk/ti/clk-816x.c b/drivers/clk/ti/clk-816x.c new file mode 100644 index 000000000..7d215cdf9 --- /dev/null +++ b/drivers/clk/ti/clk-816x.c @@ -0,0 +1,87 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/clk-provider.h> +#include <linux/clk/ti.h> +#include <dt-bindings/clock/dm816.h> + +#include "clock.h" + +static const struct omap_clkctrl_reg_data dm816_default_clkctrl_regs[] __initconst = { + { DM816_USB_OTG_HS_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, + { 0 }, +}; + +static const struct omap_clkctrl_reg_data dm816_alwon_clkctrl_regs[] __initconst = { + { DM816_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM816_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM816_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM816_GPIO1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, + { DM816_GPIO2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, + { DM816_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM816_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM816_TIMER1_CLKCTRL, NULL, CLKF_SW_SUP, "timer1_fck" }, + { DM816_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "timer2_fck" }, + { DM816_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "timer3_fck" }, + { DM816_TIMER4_CLKCTRL, NULL, CLKF_SW_SUP, "timer4_fck" }, + { DM816_TIMER5_CLKCTRL, NULL, CLKF_SW_SUP, "timer5_fck" }, + { DM816_TIMER6_CLKCTRL, NULL, CLKF_SW_SUP, "timer6_fck" }, + { DM816_TIMER7_CLKCTRL, NULL, CLKF_SW_SUP, "timer7_fck" }, + { DM816_WD_TIMER_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" }, + { DM816_MCSPI1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM816_MAILBOX_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, + { DM816_SPINBOX_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, + { DM816_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, + { DM816_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, + { DM816_DAVINCI_MDIO_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk24_ck" }, + { DM816_EMAC1_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk24_ck" }, + { DM816_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk2_ck" }, + { DM816_RTC_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" }, + { DM816_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { DM816_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { DM816_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { DM816_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { DM816_TPTC3_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, + { 0 }, +}; + +const struct omap_clkctrl_data dm816_clkctrl_data[] __initconst = { + { 0x48180500, dm816_default_clkctrl_regs }, + { 0x48181400, dm816_alwon_clkctrl_regs }, + { 0 }, +}; + +static struct ti_dt_clk dm816x_clks[] = { + DT_CLK(NULL, "sys_clkin", "sys_clkin_ck"), + DT_CLK(NULL, "timer_sys_ck", "sys_clkin_ck"), + DT_CLK(NULL, "timer_32k_ck", "sysclk18_ck"), + DT_CLK(NULL, "timer_ext_ck", "tclkin_ck"), + { .node_name = NULL }, +}; + +static const char *enable_init_clks[] = { + "ddr_pll_clk1", + "ddr_pll_clk2", + "ddr_pll_clk3", +}; + +int __init dm816x_dt_clk_init(void) +{ + ti_dt_clocks_register(dm816x_clks); + omap2_clk_disable_autoidle_all(); + ti_clk_add_aliases(); + omap2_clk_enable_init_clocks(enable_init_clks, + ARRAY_SIZE(enable_init_clks)); + + return 0; +} diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c new file mode 100644 index 000000000..beb672a21 --- /dev/null +++ b/drivers/clk/ti/clk-dra7-atl.c @@ -0,0 +1,313 @@ +/* + * DRA7 ATL (Audio Tracking Logic) clock driver + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Peter Ujfalusi <peter.ujfalusi@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/init.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +#define DRA7_ATL_INSTANCES 4 + +#define DRA7_ATL_PPMR_REG(id) (0x200 + (id * 0x80)) +#define DRA7_ATL_BBSR_REG(id) (0x204 + (id * 0x80)) +#define DRA7_ATL_ATLCR_REG(id) (0x208 + (id * 0x80)) +#define DRA7_ATL_SWEN_REG(id) (0x210 + (id * 0x80)) +#define DRA7_ATL_BWSMUX_REG(id) (0x214 + (id * 0x80)) +#define DRA7_ATL_AWSMUX_REG(id) (0x218 + (id * 0x80)) +#define DRA7_ATL_PCLKMUX_REG(id) (0x21c + (id * 0x80)) + +#define DRA7_ATL_SWEN BIT(0) +#define DRA7_ATL_DIVIDER_MASK (0x1f) +#define DRA7_ATL_PCLKMUX BIT(0) +struct dra7_atl_clock_info; + +struct dra7_atl_desc { + struct clk *clk; + struct clk_hw hw; + struct dra7_atl_clock_info *cinfo; + int id; + + bool probed; /* the driver for the IP has been loaded */ + bool valid; /* configured */ + bool enabled; + u32 bws; /* Baseband Word Select Mux */ + u32 aws; /* Audio Word Select Mux */ + u32 divider; /* Cached divider value */ +}; + +struct dra7_atl_clock_info { + struct device *dev; + void __iomem *iobase; + + struct dra7_atl_desc *cdesc; +}; + +#define to_atl_desc(_hw) container_of(_hw, struct dra7_atl_desc, hw) + +static inline void atl_write(struct dra7_atl_clock_info *cinfo, u32 reg, + u32 val) +{ + __raw_writel(val, cinfo->iobase + reg); +} + +static inline int atl_read(struct dra7_atl_clock_info *cinfo, u32 reg) +{ + return __raw_readl(cinfo->iobase + reg); +} + +static int atl_clk_enable(struct clk_hw *hw) +{ + struct dra7_atl_desc *cdesc = to_atl_desc(hw); + + if (!cdesc->probed) + goto out; + + if (unlikely(!cdesc->valid)) + dev_warn(cdesc->cinfo->dev, "atl%d has not been configured\n", + cdesc->id); + pm_runtime_get_sync(cdesc->cinfo->dev); + + atl_write(cdesc->cinfo, DRA7_ATL_ATLCR_REG(cdesc->id), + cdesc->divider - 1); + atl_write(cdesc->cinfo, DRA7_ATL_SWEN_REG(cdesc->id), DRA7_ATL_SWEN); + +out: + cdesc->enabled = true; + + return 0; +} + +static void atl_clk_disable(struct clk_hw *hw) +{ + struct dra7_atl_desc *cdesc = to_atl_desc(hw); + + if (!cdesc->probed) + goto out; + + atl_write(cdesc->cinfo, DRA7_ATL_SWEN_REG(cdesc->id), 0); + pm_runtime_put_sync(cdesc->cinfo->dev); + +out: + cdesc->enabled = false; +} + +static int atl_clk_is_enabled(struct clk_hw *hw) +{ + struct dra7_atl_desc *cdesc = to_atl_desc(hw); + + return cdesc->enabled; +} + +static unsigned long atl_clk_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct dra7_atl_desc *cdesc = to_atl_desc(hw); + + return parent_rate / cdesc->divider; +} + +static long atl_clk_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + unsigned divider; + + divider = (*parent_rate + rate / 2) / rate; + if (divider > DRA7_ATL_DIVIDER_MASK + 1) + divider = DRA7_ATL_DIVIDER_MASK + 1; + + return *parent_rate / divider; +} + +static int atl_clk_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct dra7_atl_desc *cdesc; + u32 divider; + + if (!hw || !rate) + return -EINVAL; + + cdesc = to_atl_desc(hw); + divider = ((parent_rate + rate / 2) / rate) - 1; + if (divider > DRA7_ATL_DIVIDER_MASK) + divider = DRA7_ATL_DIVIDER_MASK; + + cdesc->divider = divider + 1; + + return 0; +} + +static const struct clk_ops atl_clk_ops = { + .enable = atl_clk_enable, + .disable = atl_clk_disable, + .is_enabled = atl_clk_is_enabled, + .recalc_rate = atl_clk_recalc_rate, + .round_rate = atl_clk_round_rate, + .set_rate = atl_clk_set_rate, +}; + +static void __init of_dra7_atl_clock_setup(struct device_node *node) +{ + struct dra7_atl_desc *clk_hw = NULL; + struct clk_init_data init = { NULL }; + const char **parent_names = NULL; + struct clk *clk; + + clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL); + if (!clk_hw) { + pr_err("%s: could not allocate dra7_atl_desc\n", __func__); + return; + } + + clk_hw->hw.init = &init; + clk_hw->divider = 1; + init.name = node->name; + init.ops = &atl_clk_ops; + init.flags = CLK_IGNORE_UNUSED; + init.num_parents = of_clk_get_parent_count(node); + + if (init.num_parents != 1) { + pr_err("%s: atl clock %s must have 1 parent\n", __func__, + node->name); + goto cleanup; + } + + parent_names = kzalloc(sizeof(char *), GFP_KERNEL); + + if (!parent_names) + goto cleanup; + + parent_names[0] = of_clk_get_parent_name(node, 0); + + init.parent_names = parent_names; + + clk = ti_clk_register(NULL, &clk_hw->hw, node->name); + + if (!IS_ERR(clk)) { + of_clk_add_provider(node, of_clk_src_simple_get, clk); + kfree(parent_names); + return; + } +cleanup: + kfree(parent_names); + kfree(clk_hw); +} +CLK_OF_DECLARE(dra7_atl_clock, "ti,dra7-atl-clock", of_dra7_atl_clock_setup); + +static int of_dra7_atl_clk_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + struct dra7_atl_clock_info *cinfo; + int i; + int ret = 0; + + if (!node) + return -ENODEV; + + cinfo = devm_kzalloc(&pdev->dev, sizeof(*cinfo), GFP_KERNEL); + if (!cinfo) + return -ENOMEM; + + cinfo->iobase = of_iomap(node, 0); + cinfo->dev = &pdev->dev; + pm_runtime_enable(cinfo->dev); + pm_runtime_irq_safe(cinfo->dev); + + pm_runtime_get_sync(cinfo->dev); + atl_write(cinfo, DRA7_ATL_PCLKMUX_REG(0), DRA7_ATL_PCLKMUX); + + for (i = 0; i < DRA7_ATL_INSTANCES; i++) { + struct device_node *cfg_node; + char prop[5]; + struct dra7_atl_desc *cdesc; + struct of_phandle_args clkspec; + struct clk *clk; + int rc; + + rc = of_parse_phandle_with_args(node, "ti,provided-clocks", + NULL, i, &clkspec); + + if (rc) { + pr_err("%s: failed to lookup atl clock %d\n", __func__, + i); + return -EINVAL; + } + + clk = of_clk_get_from_provider(&clkspec); + if (IS_ERR(clk)) { + pr_err("%s: failed to get atl clock %d from provider\n", + __func__, i); + return PTR_ERR(clk); + } + + cdesc = to_atl_desc(__clk_get_hw(clk)); + cdesc->cinfo = cinfo; + cdesc->id = i; + + /* Get configuration for the ATL instances */ + snprintf(prop, sizeof(prop), "atl%u", i); + cfg_node = of_get_child_by_name(node, prop); + if (cfg_node) { + ret = of_property_read_u32(cfg_node, "bws", + &cdesc->bws); + ret |= of_property_read_u32(cfg_node, "aws", + &cdesc->aws); + if (!ret) { + cdesc->valid = true; + atl_write(cinfo, DRA7_ATL_BWSMUX_REG(i), + cdesc->bws); + atl_write(cinfo, DRA7_ATL_AWSMUX_REG(i), + cdesc->aws); + } + of_node_put(cfg_node); + } + + cdesc->probed = true; + /* + * Enable the clock if it has been asked prior to loading the + * hw driver + */ + if (cdesc->enabled) + atl_clk_enable(__clk_get_hw(clk)); + } + pm_runtime_put_sync(cinfo->dev); + + return ret; +} + +static const struct of_device_id of_dra7_atl_clk_match_tbl[] = { + { .compatible = "ti,dra7-atl", }, + {}, +}; + +static struct platform_driver dra7_atl_clk_driver = { + .driver = { + .name = "dra7-atl", + .suppress_bind_attrs = true, + .of_match_table = of_dra7_atl_clk_match_tbl, + }, + .probe = of_dra7_atl_clk_probe, +}; +builtin_platform_driver(dra7_atl_clk_driver); diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c new file mode 100644 index 000000000..0cc87c6ae --- /dev/null +++ b/drivers/clk/ti/clk.c @@ -0,0 +1,520 @@ +/* + * TI clock support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clkdev.h> +#include <linux/clk/ti.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/list.h> +#include <linux/regmap.h> +#include <linux/bootmem.h> +#include <linux/device.h> + +#include "clock.h" + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +struct ti_clk_ll_ops *ti_clk_ll_ops; +static struct device_node *clocks_node_ptr[CLK_MAX_MEMMAPS]; + +static struct ti_clk_features ti_clk_features; + +struct clk_iomap { + struct regmap *regmap; + void __iomem *mem; +}; + +static struct clk_iomap *clk_memmaps[CLK_MAX_MEMMAPS]; + +static void clk_memmap_writel(u32 val, const struct clk_omap_reg *reg) +{ + struct clk_iomap *io = clk_memmaps[reg->index]; + + if (reg->ptr) + writel_relaxed(val, reg->ptr); + else if (io->regmap) + regmap_write(io->regmap, reg->offset, val); + else + writel_relaxed(val, io->mem + reg->offset); +} + +static void _clk_rmw(u32 val, u32 mask, void __iomem *ptr) +{ + u32 v; + + v = readl_relaxed(ptr); + v &= ~mask; + v |= val; + writel_relaxed(v, ptr); +} + +static void clk_memmap_rmw(u32 val, u32 mask, const struct clk_omap_reg *reg) +{ + struct clk_iomap *io = clk_memmaps[reg->index]; + + if (reg->ptr) { + _clk_rmw(val, mask, reg->ptr); + } else if (io->regmap) { + regmap_update_bits(io->regmap, reg->offset, mask, val); + } else { + _clk_rmw(val, mask, io->mem + reg->offset); + } +} + +static u32 clk_memmap_readl(const struct clk_omap_reg *reg) +{ + u32 val; + struct clk_iomap *io = clk_memmaps[reg->index]; + + if (reg->ptr) + val = readl_relaxed(reg->ptr); + else if (io->regmap) + regmap_read(io->regmap, reg->offset, &val); + else + val = readl_relaxed(io->mem + reg->offset); + + return val; +} + +/** + * ti_clk_setup_ll_ops - setup low level clock operations + * @ops: low level clock ops descriptor + * + * Sets up low level clock operations for TI clock driver. This is used + * to provide various callbacks for the clock driver towards platform + * specific code. Returns 0 on success, -EBUSY if ll_ops have been + * registered already. + */ +int ti_clk_setup_ll_ops(struct ti_clk_ll_ops *ops) +{ + if (ti_clk_ll_ops) { + pr_err("Attempt to register ll_ops multiple times.\n"); + return -EBUSY; + } + + ti_clk_ll_ops = ops; + ops->clk_readl = clk_memmap_readl; + ops->clk_writel = clk_memmap_writel; + ops->clk_rmw = clk_memmap_rmw; + + return 0; +} + +/** + * ti_dt_clocks_register - register DT alias clocks during boot + * @oclks: list of clocks to register + * + * Register alias or non-standard DT clock entries during boot. By + * default, DT clocks are found based on their node name. If any + * additional con-id / dev-id -> clock mapping is required, use this + * function to list these. + */ +void __init ti_dt_clocks_register(struct ti_dt_clk oclks[]) +{ + struct ti_dt_clk *c; + struct device_node *node, *parent; + struct clk *clk; + struct of_phandle_args clkspec; + char buf[64]; + char *ptr; + char *tags[2]; + int i; + int num_args; + int ret; + static bool clkctrl_nodes_missing; + static bool has_clkctrl_data; + + for (c = oclks; c->node_name != NULL; c++) { + strcpy(buf, c->node_name); + ptr = buf; + for (i = 0; i < 2; i++) + tags[i] = NULL; + num_args = 0; + while (*ptr) { + if (*ptr == ':') { + if (num_args >= 2) { + pr_warn("Bad number of tags on %s\n", + c->node_name); + return; + } + tags[num_args++] = ptr + 1; + *ptr = 0; + } + ptr++; + } + + if (num_args && clkctrl_nodes_missing) + continue; + + node = of_find_node_by_name(NULL, buf); + if (num_args) { + parent = node; + node = of_get_child_by_name(parent, "clk"); + of_node_put(parent); + } + + clkspec.np = node; + clkspec.args_count = num_args; + for (i = 0; i < num_args; i++) { + ret = kstrtoint(tags[i], i ? 10 : 16, clkspec.args + i); + if (ret) { + pr_warn("Bad tag in %s at %d: %s\n", + c->node_name, i, tags[i]); + of_node_put(node); + return; + } + } + clk = of_clk_get_from_provider(&clkspec); + of_node_put(node); + if (!IS_ERR(clk)) { + c->lk.clk = clk; + clkdev_add(&c->lk); + } else { + if (num_args && !has_clkctrl_data) { + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, + "ti,clkctrl"); + if (np) { + has_clkctrl_data = true; + of_node_put(np); + } else { + clkctrl_nodes_missing = true; + + pr_warn("missing clkctrl nodes, please update your dts.\n"); + continue; + } + } + + pr_warn("failed to lookup clock node %s, ret=%ld\n", + c->node_name, PTR_ERR(clk)); + } + } +} + +struct clk_init_item { + struct device_node *node; + void *user; + ti_of_clk_init_cb_t func; + struct list_head link; +}; + +static LIST_HEAD(retry_list); + +/** + * ti_clk_retry_init - retries a failed clock init at later phase + * @node: device not for the clock + * @user: user data pointer + * @func: init function to be called for the clock + * + * Adds a failed clock init to the retry list. The retry list is parsed + * once all the other clocks have been initialized. + */ +int __init ti_clk_retry_init(struct device_node *node, void *user, + ti_of_clk_init_cb_t func) +{ + struct clk_init_item *retry; + + pr_debug("%s: adding to retry list...\n", node->name); + retry = kzalloc(sizeof(*retry), GFP_KERNEL); + if (!retry) + return -ENOMEM; + + retry->node = node; + retry->func = func; + retry->user = user; + list_add(&retry->link, &retry_list); + + return 0; +} + +/** + * ti_clk_get_reg_addr - get register address for a clock register + * @node: device node for the clock + * @index: register index from the clock node + * @reg: pointer to target register struct + * + * Builds clock register address from device tree information, and returns + * the data via the provided output pointer @reg. Returns 0 on success, + * negative error value on failure. + */ +int ti_clk_get_reg_addr(struct device_node *node, int index, + struct clk_omap_reg *reg) +{ + u32 val; + int i; + + for (i = 0; i < CLK_MAX_MEMMAPS; i++) { + if (clocks_node_ptr[i] == node->parent) + break; + } + + if (i == CLK_MAX_MEMMAPS) { + pr_err("clk-provider not found for %s!\n", node->name); + return -ENOENT; + } + + reg->index = i; + + if (of_property_read_u32_index(node, "reg", index, &val)) { + pr_err("%s must have reg[%d]!\n", node->name, index); + return -EINVAL; + } + + reg->offset = val; + reg->ptr = NULL; + + return 0; +} + +void ti_clk_latch(struct clk_omap_reg *reg, s8 shift) +{ + u32 latch; + + if (shift < 0) + return; + + latch = 1 << shift; + + ti_clk_ll_ops->clk_rmw(latch, latch, reg); + ti_clk_ll_ops->clk_rmw(0, latch, reg); + ti_clk_ll_ops->clk_readl(reg); /* OCP barrier */ +} + +/** + * omap2_clk_provider_init - init master clock provider + * @parent: master node + * @index: internal index for clk_reg_ops + * @syscon: syscon regmap pointer for accessing clock registers + * @mem: iomem pointer for the clock provider memory area, only used if + * syscon is not provided + * + * Initializes a master clock IP block. This basically sets up the + * mapping from clocks node to the memory map index. All the clocks + * are then initialized through the common of_clk_init call, and the + * clocks will access their memory maps based on the node layout. + * Returns 0 in success. + */ +int __init omap2_clk_provider_init(struct device_node *parent, int index, + struct regmap *syscon, void __iomem *mem) +{ + struct device_node *clocks; + struct clk_iomap *io; + + /* get clocks for this parent */ + clocks = of_get_child_by_name(parent, "clocks"); + if (!clocks) { + pr_err("%s missing 'clocks' child node.\n", parent->name); + return -EINVAL; + } + + /* add clocks node info */ + clocks_node_ptr[index] = clocks; + + io = kzalloc(sizeof(*io), GFP_KERNEL); + if (!io) + return -ENOMEM; + + io->regmap = syscon; + io->mem = mem; + + clk_memmaps[index] = io; + + return 0; +} + +/** + * omap2_clk_legacy_provider_init - initialize a legacy clock provider + * @index: index for the clock provider + * @mem: iomem pointer for the clock provider memory area + * + * Initializes a legacy clock provider memory mapping. + */ +void __init omap2_clk_legacy_provider_init(int index, void __iomem *mem) +{ + struct clk_iomap *io; + + io = memblock_virt_alloc(sizeof(*io), 0); + + io->mem = mem; + + clk_memmaps[index] = io; +} + +/** + * ti_dt_clk_init_retry_clks - init clocks from the retry list + * + * Initializes any clocks that have failed to initialize before, + * reasons being missing parent node(s) during earlier init. This + * typically happens only for DPLLs which need to have both of their + * parent clocks ready during init. + */ +void ti_dt_clk_init_retry_clks(void) +{ + struct clk_init_item *retry; + struct clk_init_item *tmp; + int retries = 5; + + while (!list_empty(&retry_list) && retries) { + list_for_each_entry_safe(retry, tmp, &retry_list, link) { + pr_debug("retry-init: %s\n", retry->node->name); + retry->func(retry->user, retry->node); + list_del(&retry->link); + kfree(retry); + } + retries--; + } +} + +static const struct of_device_id simple_clk_match_table[] __initconst = { + { .compatible = "fixed-clock" }, + { .compatible = "fixed-factor-clock" }, + { } +}; + +/** + * ti_clk_add_aliases - setup clock aliases + * + * Sets up any missing clock aliases. No return value. + */ +void __init ti_clk_add_aliases(void) +{ + struct device_node *np; + struct clk *clk; + + for_each_matching_node(np, simple_clk_match_table) { + struct of_phandle_args clkspec; + + clkspec.np = np; + clk = of_clk_get_from_provider(&clkspec); + + ti_clk_add_alias(NULL, clk, np->name); + } +} + +/** + * ti_clk_setup_features - setup clock features flags + * @features: features definition to use + * + * Initializes the clock driver features flags based on platform + * provided data. No return value. + */ +void __init ti_clk_setup_features(struct ti_clk_features *features) +{ + memcpy(&ti_clk_features, features, sizeof(*features)); +} + +/** + * ti_clk_get_features - get clock driver features flags + * + * Get TI clock driver features description. Returns a pointer + * to the current feature setup. + */ +const struct ti_clk_features *ti_clk_get_features(void) +{ + return &ti_clk_features; +} + +/** + * omap2_clk_enable_init_clocks - prepare & enable a list of clocks + * @clk_names: ptr to an array of strings of clock names to enable + * @num_clocks: number of clock names in @clk_names + * + * Prepare and enable a list of clocks, named by @clk_names. No + * return value. XXX Deprecated; only needed until these clocks are + * properly claimed and enabled by the drivers or core code that uses + * them. XXX What code disables & calls clk_put on these clocks? + */ +void omap2_clk_enable_init_clocks(const char **clk_names, u8 num_clocks) +{ + struct clk *init_clk; + int i; + + for (i = 0; i < num_clocks; i++) { + init_clk = clk_get(NULL, clk_names[i]); + if (WARN(IS_ERR(init_clk), "could not find init clock %s\n", + clk_names[i])) + continue; + clk_prepare_enable(init_clk); + } +} + +/** + * ti_clk_add_alias - add a clock alias for a TI clock + * @dev: device alias for this clock + * @clk: clock handle to create alias for + * @con: connection ID for this clock + * + * Creates a clock alias for a TI clock. Allocates the clock lookup entry + * and assigns the data to it. Returns 0 if successful, negative error + * value otherwise. + */ +int ti_clk_add_alias(struct device *dev, struct clk *clk, const char *con) +{ + struct clk_lookup *cl; + + if (!clk) + return 0; + + if (IS_ERR(clk)) + return PTR_ERR(clk); + + cl = kzalloc(sizeof(*cl), GFP_KERNEL); + if (!cl) + return -ENOMEM; + + if (dev) + cl->dev_id = dev_name(dev); + cl->con_id = con; + cl->clk = clk; + + clkdev_add(cl); + + return 0; +} + +/** + * ti_clk_register - register a TI clock to the common clock framework + * @dev: device for this clock + * @hw: hardware clock handle + * @con: connection ID for this clock + * + * Registers a TI clock to the common clock framework, and adds a clock + * alias for it. Returns a handle to the registered clock if successful, + * ERR_PTR value in failure. + */ +struct clk *ti_clk_register(struct device *dev, struct clk_hw *hw, + const char *con) +{ + struct clk *clk; + int ret; + + clk = clk_register(dev, hw); + if (IS_ERR(clk)) + return clk; + + ret = ti_clk_add_alias(dev, clk, con); + if (ret) { + clk_unregister(clk); + return ERR_PTR(ret); + } + + return clk; +} diff --git a/drivers/clk/ti/clkctrl.c b/drivers/clk/ti/clkctrl.c new file mode 100644 index 000000000..2c2564aca --- /dev/null +++ b/drivers/clk/ti/clkctrl.c @@ -0,0 +1,580 @@ +/* + * OMAP clkctrl clock support + * + * Copyright (C) 2017 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> +#include <linux/delay.h> +#include <linux/timekeeping.h> +#include "clock.h" + +#define NO_IDLEST 0x1 + +#define OMAP4_MODULEMODE_MASK 0x3 + +#define MODULEMODE_HWCTRL 0x1 +#define MODULEMODE_SWCTRL 0x2 + +#define OMAP4_IDLEST_MASK (0x3 << 16) +#define OMAP4_IDLEST_SHIFT 16 + +#define CLKCTRL_IDLEST_FUNCTIONAL 0x0 +#define CLKCTRL_IDLEST_INTERFACE_IDLE 0x2 +#define CLKCTRL_IDLEST_DISABLED 0x3 + +/* These timeouts are in us */ +#define OMAP4_MAX_MODULE_READY_TIME 2000 +#define OMAP4_MAX_MODULE_DISABLE_TIME 5000 + +static bool _early_timeout = true; + +struct omap_clkctrl_provider { + void __iomem *base; + struct list_head clocks; + char *clkdm_name; +}; + +struct omap_clkctrl_clk { + struct clk_hw *clk; + u16 reg_offset; + int bit_offset; + struct list_head node; +}; + +union omap4_timeout { + u32 cycles; + ktime_t start; +}; + +static const struct omap_clkctrl_data default_clkctrl_data[] __initconst = { + { 0 }, +}; + +static u32 _omap4_idlest(u32 val) +{ + val &= OMAP4_IDLEST_MASK; + val >>= OMAP4_IDLEST_SHIFT; + + return val; +} + +static bool _omap4_is_idle(u32 val) +{ + val = _omap4_idlest(val); + + return val == CLKCTRL_IDLEST_DISABLED; +} + +static bool _omap4_is_ready(u32 val) +{ + val = _omap4_idlest(val); + + return val == CLKCTRL_IDLEST_FUNCTIONAL || + val == CLKCTRL_IDLEST_INTERFACE_IDLE; +} + +static bool _omap4_is_timeout(union omap4_timeout *time, u32 timeout) +{ + /* + * There are two special cases where ktime_to_ns() can't be + * used to track the timeouts. First one is during early boot + * when the timers haven't been initialized yet. The second + * one is during suspend-resume cycle while timekeeping is + * being suspended / resumed. Clocksource for the system + * can be from a timer that requires pm_runtime access, which + * will eventually bring us here with timekeeping_suspended, + * during both suspend entry and resume paths. This happens + * at least on am43xx platform. Account for flakeyness + * with udelay() by multiplying the timeout value by 2. + */ + if (unlikely(_early_timeout || timekeeping_suspended)) { + if (time->cycles++ < timeout) { + udelay(1 * 2); + return false; + } + } else { + if (!ktime_to_ns(time->start)) { + time->start = ktime_get(); + return false; + } + + if (ktime_us_delta(ktime_get(), time->start) < timeout) { + cpu_relax(); + return false; + } + } + + return true; +} + +static int __init _omap4_disable_early_timeout(void) +{ + _early_timeout = false; + + return 0; +} +arch_initcall(_omap4_disable_early_timeout); + +static int _omap4_clkctrl_clk_enable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + u32 val; + int ret; + union omap4_timeout timeout = { 0 }; + + if (clk->clkdm) { + ret = ti_clk_ll_ops->clkdm_clk_enable(clk->clkdm, hw->clk); + if (ret) { + WARN(1, + "%s: could not enable %s's clockdomain %s: %d\n", + __func__, clk_hw_get_name(hw), + clk->clkdm_name, ret); + return ret; + } + } + + if (!clk->enable_bit) + return 0; + + val = ti_clk_ll_ops->clk_readl(&clk->enable_reg); + + val &= ~OMAP4_MODULEMODE_MASK; + val |= clk->enable_bit; + + ti_clk_ll_ops->clk_writel(val, &clk->enable_reg); + + if (clk->flags & NO_IDLEST) + return 0; + + /* Wait until module is enabled */ + while (!_omap4_is_ready(ti_clk_ll_ops->clk_readl(&clk->enable_reg))) { + if (_omap4_is_timeout(&timeout, OMAP4_MAX_MODULE_READY_TIME)) { + pr_err("%s: failed to enable\n", clk_hw_get_name(hw)); + return -EBUSY; + } + } + + return 0; +} + +static void _omap4_clkctrl_clk_disable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + u32 val; + union omap4_timeout timeout = { 0 }; + + if (!clk->enable_bit) + goto exit; + + val = ti_clk_ll_ops->clk_readl(&clk->enable_reg); + + val &= ~OMAP4_MODULEMODE_MASK; + + ti_clk_ll_ops->clk_writel(val, &clk->enable_reg); + + if (clk->flags & NO_IDLEST) + goto exit; + + /* Wait until module is disabled */ + while (!_omap4_is_idle(ti_clk_ll_ops->clk_readl(&clk->enable_reg))) { + if (_omap4_is_timeout(&timeout, + OMAP4_MAX_MODULE_DISABLE_TIME)) { + pr_err("%s: failed to disable\n", clk_hw_get_name(hw)); + break; + } + } + +exit: + if (clk->clkdm) + ti_clk_ll_ops->clkdm_clk_disable(clk->clkdm, hw->clk); +} + +static int _omap4_clkctrl_clk_is_enabled(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + u32 val; + + val = ti_clk_ll_ops->clk_readl(&clk->enable_reg); + + if (val & clk->enable_bit) + return 1; + + return 0; +} + +static const struct clk_ops omap4_clkctrl_clk_ops = { + .enable = _omap4_clkctrl_clk_enable, + .disable = _omap4_clkctrl_clk_disable, + .is_enabled = _omap4_clkctrl_clk_is_enabled, + .init = omap2_init_clk_clkdm, +}; + +static struct clk_hw *_ti_omap4_clkctrl_xlate(struct of_phandle_args *clkspec, + void *data) +{ + struct omap_clkctrl_provider *provider = data; + struct omap_clkctrl_clk *entry; + bool found = false; + + if (clkspec->args_count != 2) + return ERR_PTR(-EINVAL); + + pr_debug("%s: looking for %x:%x\n", __func__, + clkspec->args[0], clkspec->args[1]); + + list_for_each_entry(entry, &provider->clocks, node) { + if (entry->reg_offset == clkspec->args[0] && + entry->bit_offset == clkspec->args[1]) { + found = true; + break; + } + } + + if (!found) + return ERR_PTR(-EINVAL); + + return entry->clk; +} + +static int __init +_ti_clkctrl_clk_register(struct omap_clkctrl_provider *provider, + struct device_node *node, struct clk_hw *clk_hw, + u16 offset, u8 bit, const char * const *parents, + int num_parents, const struct clk_ops *ops) +{ + struct clk_init_data init = { NULL }; + struct clk *clk; + struct omap_clkctrl_clk *clkctrl_clk; + int ret = 0; + + init.name = kasprintf(GFP_KERNEL, "%s:%s:%04x:%d", node->parent->name, + node->name, offset, bit); + clkctrl_clk = kzalloc(sizeof(*clkctrl_clk), GFP_KERNEL); + if (!init.name || !clkctrl_clk) { + ret = -ENOMEM; + goto cleanup; + } + + clk_hw->init = &init; + init.parent_names = parents; + init.num_parents = num_parents; + init.ops = ops; + init.flags = CLK_IS_BASIC; + + clk = ti_clk_register(NULL, clk_hw, init.name); + if (IS_ERR_OR_NULL(clk)) { + ret = -EINVAL; + goto cleanup; + } + + clkctrl_clk->reg_offset = offset; + clkctrl_clk->bit_offset = bit; + clkctrl_clk->clk = clk_hw; + + list_add(&clkctrl_clk->node, &provider->clocks); + + return 0; + +cleanup: + kfree(init.name); + kfree(clkctrl_clk); + return ret; +} + +static void __init +_ti_clkctrl_setup_gate(struct omap_clkctrl_provider *provider, + struct device_node *node, u16 offset, + const struct omap_clkctrl_bit_data *data, + void __iomem *reg) +{ + struct clk_hw_omap *clk_hw; + + clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL); + if (!clk_hw) + return; + + clk_hw->enable_bit = data->bit; + clk_hw->enable_reg.ptr = reg; + + if (_ti_clkctrl_clk_register(provider, node, &clk_hw->hw, offset, + data->bit, data->parents, 1, + &omap_gate_clk_ops)) + kfree(clk_hw); +} + +static void __init +_ti_clkctrl_setup_mux(struct omap_clkctrl_provider *provider, + struct device_node *node, u16 offset, + const struct omap_clkctrl_bit_data *data, + void __iomem *reg) +{ + struct clk_omap_mux *mux; + int num_parents = 0; + const char * const *pname; + + mux = kzalloc(sizeof(*mux), GFP_KERNEL); + if (!mux) + return; + + pname = data->parents; + while (*pname) { + num_parents++; + pname++; + } + + mux->mask = num_parents; + if (!(mux->flags & CLK_MUX_INDEX_ONE)) + mux->mask--; + + mux->mask = (1 << fls(mux->mask)) - 1; + + mux->shift = data->bit; + mux->reg.ptr = reg; + + if (_ti_clkctrl_clk_register(provider, node, &mux->hw, offset, + data->bit, data->parents, num_parents, + &ti_clk_mux_ops)) + kfree(mux); +} + +static void __init +_ti_clkctrl_setup_div(struct omap_clkctrl_provider *provider, + struct device_node *node, u16 offset, + const struct omap_clkctrl_bit_data *data, + void __iomem *reg) +{ + struct clk_omap_divider *div; + const struct omap_clkctrl_div_data *div_data = data->data; + u8 div_flags = 0; + + div = kzalloc(sizeof(*div), GFP_KERNEL); + if (!div) + return; + + div->reg.ptr = reg; + div->shift = data->bit; + div->flags = div_data->flags; + + if (div->flags & CLK_DIVIDER_POWER_OF_TWO) + div_flags |= CLKF_INDEX_POWER_OF_TWO; + + if (ti_clk_parse_divider_data((int *)div_data->dividers, 0, + div_data->max_div, div_flags, + &div->width, &div->table)) { + pr_err("%s: Data parsing for %pOF:%04x:%d failed\n", __func__, + node, offset, data->bit); + kfree(div); + return; + } + + if (_ti_clkctrl_clk_register(provider, node, &div->hw, offset, + data->bit, data->parents, 1, + &ti_clk_divider_ops)) + kfree(div); +} + +static void __init +_ti_clkctrl_setup_subclks(struct omap_clkctrl_provider *provider, + struct device_node *node, + const struct omap_clkctrl_reg_data *data, + void __iomem *reg) +{ + const struct omap_clkctrl_bit_data *bits = data->bit_data; + + if (!bits) + return; + + while (bits->bit) { + switch (bits->type) { + case TI_CLK_GATE: + _ti_clkctrl_setup_gate(provider, node, data->offset, + bits, reg); + break; + + case TI_CLK_DIVIDER: + _ti_clkctrl_setup_div(provider, node, data->offset, + bits, reg); + break; + + case TI_CLK_MUX: + _ti_clkctrl_setup_mux(provider, node, data->offset, + bits, reg); + break; + + default: + pr_err("%s: bad subclk type: %d\n", __func__, + bits->type); + return; + } + bits++; + } +} + +static void __init _clkctrl_add_provider(void *data, + struct device_node *np) +{ + of_clk_add_hw_provider(np, _ti_omap4_clkctrl_xlate, data); +} + +static void __init _ti_omap4_clkctrl_setup(struct device_node *node) +{ + struct omap_clkctrl_provider *provider; + const struct omap_clkctrl_data *data = default_clkctrl_data; + const struct omap_clkctrl_reg_data *reg_data; + struct clk_init_data init = { NULL }; + struct clk_hw_omap *hw; + struct clk *clk; + struct omap_clkctrl_clk *clkctrl_clk; + const __be32 *addrp; + u32 addr; + int ret; + + addrp = of_get_address(node, 0, NULL, NULL); + addr = (u32)of_translate_address(node, addrp); + +#ifdef CONFIG_ARCH_OMAP4 + if (of_machine_is_compatible("ti,omap4")) + data = omap4_clkctrl_data; +#endif +#ifdef CONFIG_SOC_OMAP5 + if (of_machine_is_compatible("ti,omap5")) + data = omap5_clkctrl_data; +#endif +#ifdef CONFIG_SOC_DRA7XX + if (of_machine_is_compatible("ti,dra7")) + data = dra7_clkctrl_data; +#endif +#ifdef CONFIG_SOC_AM33XX + if (of_machine_is_compatible("ti,am33xx")) + data = am3_clkctrl_data; +#endif +#ifdef CONFIG_SOC_AM43XX + if (of_machine_is_compatible("ti,am4372")) + data = am4_clkctrl_data; + if (of_machine_is_compatible("ti,am438x")) + data = am438x_clkctrl_data; +#endif +#ifdef CONFIG_SOC_TI81XX + if (of_machine_is_compatible("ti,dm814")) + data = dm814_clkctrl_data; + + if (of_machine_is_compatible("ti,dm816")) + data = dm816_clkctrl_data; +#endif + + while (data->addr) { + if (addr == data->addr) + break; + + data++; + } + + if (!data->addr) { + pr_err("%pOF not found from clkctrl data.\n", node); + return; + } + + provider = kzalloc(sizeof(*provider), GFP_KERNEL); + if (!provider) + return; + + provider->base = of_iomap(node, 0); + + provider->clkdm_name = kmalloc(strlen(node->parent->name) + 3, + GFP_KERNEL); + if (!provider->clkdm_name) { + kfree(provider); + return; + } + + /* + * Create default clkdm name, replace _cm from end of parent node + * name with _clkdm + */ + strcpy(provider->clkdm_name, node->parent->name); + provider->clkdm_name[strlen(provider->clkdm_name) - 2] = 0; + strcat(provider->clkdm_name, "clkdm"); + + INIT_LIST_HEAD(&provider->clocks); + + /* Generate clocks */ + reg_data = data->regs; + + while (reg_data->parent) { + hw = kzalloc(sizeof(*hw), GFP_KERNEL); + if (!hw) + return; + + hw->enable_reg.ptr = provider->base + reg_data->offset; + + _ti_clkctrl_setup_subclks(provider, node, reg_data, + hw->enable_reg.ptr); + + if (reg_data->flags & CLKF_SW_SUP) + hw->enable_bit = MODULEMODE_SWCTRL; + if (reg_data->flags & CLKF_HW_SUP) + hw->enable_bit = MODULEMODE_HWCTRL; + if (reg_data->flags & CLKF_NO_IDLEST) + hw->flags |= NO_IDLEST; + + if (reg_data->clkdm_name) + hw->clkdm_name = reg_data->clkdm_name; + else + hw->clkdm_name = provider->clkdm_name; + + init.parent_names = ®_data->parent; + init.num_parents = 1; + init.flags = 0; + if (reg_data->flags & CLKF_SET_RATE_PARENT) + init.flags |= CLK_SET_RATE_PARENT; + init.name = kasprintf(GFP_KERNEL, "%s:%s:%04x:%d", + node->parent->name, node->name, + reg_data->offset, 0); + clkctrl_clk = kzalloc(sizeof(*clkctrl_clk), GFP_KERNEL); + if (!init.name || !clkctrl_clk) + goto cleanup; + + init.ops = &omap4_clkctrl_clk_ops; + hw->hw.init = &init; + + clk = ti_clk_register(NULL, &hw->hw, init.name); + if (IS_ERR_OR_NULL(clk)) + goto cleanup; + + clkctrl_clk->reg_offset = reg_data->offset; + clkctrl_clk->clk = &hw->hw; + + list_add(&clkctrl_clk->node, &provider->clocks); + + reg_data++; + } + + ret = of_clk_add_hw_provider(node, _ti_omap4_clkctrl_xlate, provider); + if (ret == -EPROBE_DEFER) + ti_clk_retry_init(node, provider, _clkctrl_add_provider); + + return; + +cleanup: + kfree(hw); + kfree(init.name); + kfree(clkctrl_clk); +} +CLK_OF_DECLARE(ti_omap4_clkctrl_clock, "ti,clkctrl", + _ti_omap4_clkctrl_setup); diff --git a/drivers/clk/ti/clkt_dflt.c b/drivers/clk/ti/clkt_dflt.c new file mode 100644 index 000000000..91751dd26 --- /dev/null +++ b/drivers/clk/ti/clkt_dflt.c @@ -0,0 +1,297 @@ +/* + * Default clock type + * + * Copyright (C) 2005-2008, 2015 Texas Instruments, Inc. + * Copyright (C) 2004-2010 Nokia Corporation + * + * Contacts: + * Richard Woodruff <r-woodruff2@ti.com> + * Paul Walmsley + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/clk-provider.h> +#include <linux/io.h> +#include <linux/clk/ti.h> +#include <linux/delay.h> + +#include "clock.h" + +/* + * MAX_MODULE_ENABLE_WAIT: maximum of number of microseconds to wait + * for a module to indicate that it is no longer in idle + */ +#define MAX_MODULE_ENABLE_WAIT 100000 + +/* + * CM module register offsets, used for calculating the companion + * register addresses. + */ +#define CM_FCLKEN 0x0000 +#define CM_ICLKEN 0x0010 + +/** + * _wait_idlest_generic - wait for a module to leave the idle state + * @clk: module clock to wait for (needed for register offsets) + * @reg: virtual address of module IDLEST register + * @mask: value to mask against to determine if the module is active + * @idlest: idle state indicator (0 or 1) for the clock + * @name: name of the clock (for printk) + * + * Wait for a module to leave idle, where its idle-status register is + * not inside the CM module. Returns 1 if the module left idle + * promptly, or 0 if the module did not leave idle before the timeout + * elapsed. XXX Deprecated - should be moved into drivers for the + * individual IP block that the IDLEST register exists in. + */ +static int _wait_idlest_generic(struct clk_hw_omap *clk, + struct clk_omap_reg *reg, + u32 mask, u8 idlest, const char *name) +{ + int i = 0, ena = 0; + + ena = (idlest) ? 0 : mask; + + /* Wait until module enters enabled state */ + for (i = 0; i < MAX_MODULE_ENABLE_WAIT; i++) { + if ((ti_clk_ll_ops->clk_readl(reg) & mask) == ena) + break; + udelay(1); + } + + if (i < MAX_MODULE_ENABLE_WAIT) + pr_debug("omap clock: module associated with clock %s ready after %d loops\n", + name, i); + else + pr_err("omap clock: module associated with clock %s didn't enable in %d tries\n", + name, MAX_MODULE_ENABLE_WAIT); + + return (i < MAX_MODULE_ENABLE_WAIT) ? 1 : 0; +} + +/** + * _omap2_module_wait_ready - wait for an OMAP module to leave IDLE + * @clk: struct clk * belonging to the module + * + * If the necessary clocks for the OMAP hardware IP block that + * corresponds to clock @clk are enabled, then wait for the module to + * indicate readiness (i.e., to leave IDLE). This code does not + * belong in the clock code and will be moved in the medium term to + * module-dependent code. No return value. + */ +static void _omap2_module_wait_ready(struct clk_hw_omap *clk) +{ + struct clk_omap_reg companion_reg, idlest_reg; + u8 other_bit, idlest_bit, idlest_val, idlest_reg_id; + s16 prcm_mod; + int r; + + /* Not all modules have multiple clocks that their IDLEST depends on */ + if (clk->ops->find_companion) { + clk->ops->find_companion(clk, &companion_reg, &other_bit); + if (!(ti_clk_ll_ops->clk_readl(&companion_reg) & + (1 << other_bit))) + return; + } + + clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit, &idlest_val); + r = ti_clk_ll_ops->cm_split_idlest_reg(&idlest_reg, &prcm_mod, + &idlest_reg_id); + if (r) { + /* IDLEST register not in the CM module */ + _wait_idlest_generic(clk, &idlest_reg, (1 << idlest_bit), + idlest_val, clk_hw_get_name(&clk->hw)); + } else { + ti_clk_ll_ops->cm_wait_module_ready(0, prcm_mod, idlest_reg_id, + idlest_bit); + } +} + +/** + * omap2_clk_dflt_find_companion - find companion clock to @clk + * @clk: struct clk * to find the companion clock of + * @other_reg: void __iomem ** to return the companion clock CM_*CLKEN va in + * @other_bit: u8 ** to return the companion clock bit shift in + * + * Note: We don't need special code here for INVERT_ENABLE for the + * time being since INVERT_ENABLE only applies to clocks enabled by + * CM_CLKEN_PLL + * + * Convert CM_ICLKEN* <-> CM_FCLKEN*. This conversion assumes it's + * just a matter of XORing the bits. + * + * Some clocks don't have companion clocks. For example, modules with + * only an interface clock (such as MAILBOXES) don't have a companion + * clock. Right now, this code relies on the hardware exporting a bit + * in the correct companion register that indicates that the + * nonexistent 'companion clock' is active. Future patches will + * associate this type of code with per-module data structures to + * avoid this issue, and remove the casts. No return value. + */ +void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk, + struct clk_omap_reg *other_reg, + u8 *other_bit) +{ + memcpy(other_reg, &clk->enable_reg, sizeof(*other_reg)); + + /* + * Convert CM_ICLKEN* <-> CM_FCLKEN*. This conversion assumes + * it's just a matter of XORing the bits. + */ + other_reg->offset ^= (CM_FCLKEN ^ CM_ICLKEN); + + *other_bit = clk->enable_bit; +} + +/** + * omap2_clk_dflt_find_idlest - find CM_IDLEST reg va, bit shift for @clk + * @clk: struct clk * to find IDLEST info for + * @idlest_reg: void __iomem ** to return the CM_IDLEST va in + * @idlest_bit: u8 * to return the CM_IDLEST bit shift in + * @idlest_val: u8 * to return the idle status indicator + * + * Return the CM_IDLEST register address and bit shift corresponding + * to the module that "owns" this clock. This default code assumes + * that the CM_IDLEST bit shift is the CM_*CLKEN bit shift, and that + * the IDLEST register address ID corresponds to the CM_*CLKEN + * register address ID (e.g., that CM_FCLKEN2 corresponds to + * CM_IDLEST2). This is not true for all modules. No return value. + */ +void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk, + struct clk_omap_reg *idlest_reg, u8 *idlest_bit, + u8 *idlest_val) +{ + memcpy(idlest_reg, &clk->enable_reg, sizeof(*idlest_reg)); + + idlest_reg->offset &= ~0xf0; + idlest_reg->offset |= 0x20; + + *idlest_bit = clk->enable_bit; + + /* + * 24xx uses 0 to indicate not ready, and 1 to indicate ready. + * 34xx reverses this, just to keep us on our toes + * AM35xx uses both, depending on the module. + */ + *idlest_val = ti_clk_get_features()->cm_idlest_val; +} + +/** + * omap2_dflt_clk_enable - enable a clock in the hardware + * @hw: struct clk_hw * of the clock to enable + * + * Enable the clock @hw in the hardware. We first call into the OMAP + * clockdomain code to "enable" the corresponding clockdomain if this + * is the first enabled user of the clockdomain. Then program the + * hardware to enable the clock. Then wait for the IP block that uses + * this clock to leave idle (if applicable). Returns the error value + * from clkdm_clk_enable() if it terminated with an error, or -EINVAL + * if @hw has a null clock enable_reg, or zero upon success. + */ +int omap2_dflt_clk_enable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk; + u32 v; + int ret = 0; + bool clkdm_control; + + if (ti_clk_get_features()->flags & TI_CLK_DISABLE_CLKDM_CONTROL) + clkdm_control = false; + else + clkdm_control = true; + + clk = to_clk_hw_omap(hw); + + if (clkdm_control && clk->clkdm) { + ret = ti_clk_ll_ops->clkdm_clk_enable(clk->clkdm, hw->clk); + if (ret) { + WARN(1, + "%s: could not enable %s's clockdomain %s: %d\n", + __func__, clk_hw_get_name(hw), + clk->clkdm_name, ret); + return ret; + } + } + + /* FIXME should not have INVERT_ENABLE bit here */ + v = ti_clk_ll_ops->clk_readl(&clk->enable_reg); + if (clk->flags & INVERT_ENABLE) + v &= ~(1 << clk->enable_bit); + else + v |= (1 << clk->enable_bit); + ti_clk_ll_ops->clk_writel(v, &clk->enable_reg); + v = ti_clk_ll_ops->clk_readl(&clk->enable_reg); /* OCP barrier */ + + if (clk->ops && clk->ops->find_idlest) + _omap2_module_wait_ready(clk); + + return 0; +} + +/** + * omap2_dflt_clk_disable - disable a clock in the hardware + * @hw: struct clk_hw * of the clock to disable + * + * Disable the clock @hw in the hardware, and call into the OMAP + * clockdomain code to "disable" the corresponding clockdomain if all + * clocks/hwmods in that clockdomain are now disabled. No return + * value. + */ +void omap2_dflt_clk_disable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk; + u32 v; + + clk = to_clk_hw_omap(hw); + + v = ti_clk_ll_ops->clk_readl(&clk->enable_reg); + if (clk->flags & INVERT_ENABLE) + v |= (1 << clk->enable_bit); + else + v &= ~(1 << clk->enable_bit); + ti_clk_ll_ops->clk_writel(v, &clk->enable_reg); + /* No OCP barrier needed here since it is a disable operation */ + + if (!(ti_clk_get_features()->flags & TI_CLK_DISABLE_CLKDM_CONTROL) && + clk->clkdm) + ti_clk_ll_ops->clkdm_clk_disable(clk->clkdm, hw->clk); +} + +/** + * omap2_dflt_clk_is_enabled - is clock enabled in the hardware? + * @hw: struct clk_hw * to check + * + * Return 1 if the clock represented by @hw is enabled in the + * hardware, or 0 otherwise. Intended for use in the struct + * clk_ops.is_enabled function pointer. + */ +int omap2_dflt_clk_is_enabled(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + u32 v; + + v = ti_clk_ll_ops->clk_readl(&clk->enable_reg); + + if (clk->flags & INVERT_ENABLE) + v ^= BIT(clk->enable_bit); + + v &= BIT(clk->enable_bit); + + return v ? 1 : 0; +} + +const struct clk_hw_omap_ops clkhwops_wait = { + .find_idlest = omap2_clk_dflt_find_idlest, + .find_companion = omap2_clk_dflt_find_companion, +}; diff --git a/drivers/clk/ti/clkt_dpll.c b/drivers/clk/ti/clkt_dpll.c new file mode 100644 index 000000000..ce98da2c1 --- /dev/null +++ b/drivers/clk/ti/clkt_dpll.c @@ -0,0 +1,373 @@ +/* + * OMAP2/3/4 DPLL clock functions + * + * Copyright (C) 2005-2008 Texas Instruments, Inc. + * Copyright (C) 2004-2010 Nokia Corporation + * + * Contacts: + * Richard Woodruff <r-woodruff2@ti.com> + * Paul Walmsley + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#undef DEBUG + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/io.h> +#include <linux/clk/ti.h> + +#include <asm/div64.h> + +#include "clock.h" + +/* DPLL rate rounding: minimum DPLL multiplier, divider values */ +#define DPLL_MIN_MULTIPLIER 2 +#define DPLL_MIN_DIVIDER 1 + +/* Possible error results from _dpll_test_mult */ +#define DPLL_MULT_UNDERFLOW -1 + +/* + * Scale factor to mitigate roundoff errors in DPLL rate rounding. + * The higher the scale factor, the greater the risk of arithmetic overflow, + * but the closer the rounded rate to the target rate. DPLL_SCALE_FACTOR + * must be a power of DPLL_SCALE_BASE. + */ +#define DPLL_SCALE_FACTOR 64 +#define DPLL_SCALE_BASE 2 +#define DPLL_ROUNDING_VAL ((DPLL_SCALE_BASE / 2) * \ + (DPLL_SCALE_FACTOR / DPLL_SCALE_BASE)) + +/* + * DPLL valid Fint frequency range for OMAP36xx and OMAP4xxx. + * From device data manual section 4.3 "DPLL and DLL Specifications". + */ +#define OMAP3PLUS_DPLL_FINT_JTYPE_MIN 500000 +#define OMAP3PLUS_DPLL_FINT_JTYPE_MAX 2500000 + +/* _dpll_test_fint() return codes */ +#define DPLL_FINT_UNDERFLOW -1 +#define DPLL_FINT_INVALID -2 + +/* Private functions */ + +/* + * _dpll_test_fint - test whether an Fint value is valid for the DPLL + * @clk: DPLL struct clk to test + * @n: divider value (N) to test + * + * Tests whether a particular divider @n will result in a valid DPLL + * internal clock frequency Fint. See the 34xx TRM 4.7.6.2 "DPLL Jitter + * Correction". Returns 0 if OK, -1 if the enclosing loop can terminate + * (assuming that it is counting N upwards), or -2 if the enclosing loop + * should skip to the next iteration (again assuming N is increasing). + */ +static int _dpll_test_fint(struct clk_hw_omap *clk, unsigned int n) +{ + struct dpll_data *dd; + long fint, fint_min, fint_max; + int ret = 0; + + dd = clk->dpll_data; + + /* DPLL divider must result in a valid jitter correction val */ + fint = clk_hw_get_rate(clk_hw_get_parent(&clk->hw)) / n; + + if (dd->flags & DPLL_J_TYPE) { + fint_min = OMAP3PLUS_DPLL_FINT_JTYPE_MIN; + fint_max = OMAP3PLUS_DPLL_FINT_JTYPE_MAX; + } else { + fint_min = ti_clk_get_features()->fint_min; + fint_max = ti_clk_get_features()->fint_max; + } + + if (!fint_min || !fint_max) { + WARN(1, "No fint limits available!\n"); + return DPLL_FINT_INVALID; + } + + if (fint < ti_clk_get_features()->fint_min) { + pr_debug("rejecting n=%d due to Fint failure, lowering max_divider\n", + n); + dd->max_divider = n; + ret = DPLL_FINT_UNDERFLOW; + } else if (fint > ti_clk_get_features()->fint_max) { + pr_debug("rejecting n=%d due to Fint failure, boosting min_divider\n", + n); + dd->min_divider = n; + ret = DPLL_FINT_INVALID; + } else if (fint > ti_clk_get_features()->fint_band1_max && + fint < ti_clk_get_features()->fint_band2_min) { + pr_debug("rejecting n=%d due to Fint failure\n", n); + ret = DPLL_FINT_INVALID; + } + + return ret; +} + +static unsigned long _dpll_compute_new_rate(unsigned long parent_rate, + unsigned int m, unsigned int n) +{ + unsigned long long num; + + num = (unsigned long long)parent_rate * m; + do_div(num, n); + return num; +} + +/* + * _dpll_test_mult - test a DPLL multiplier value + * @m: pointer to the DPLL m (multiplier) value under test + * @n: current DPLL n (divider) value under test + * @new_rate: pointer to storage for the resulting rounded rate + * @target_rate: the desired DPLL rate + * @parent_rate: the DPLL's parent clock rate + * + * This code tests a DPLL multiplier value, ensuring that the + * resulting rate will not be higher than the target_rate, and that + * the multiplier value itself is valid for the DPLL. Initially, the + * integer pointed to by the m argument should be prescaled by + * multiplying by DPLL_SCALE_FACTOR. The code will replace this with + * a non-scaled m upon return. This non-scaled m will result in a + * new_rate as close as possible to target_rate (but not greater than + * target_rate) given the current (parent_rate, n, prescaled m) + * triple. Returns DPLL_MULT_UNDERFLOW in the event that the + * non-scaled m attempted to underflow, which can allow the calling + * function to bail out early; or 0 upon success. + */ +static int _dpll_test_mult(int *m, int n, unsigned long *new_rate, + unsigned long target_rate, + unsigned long parent_rate) +{ + int r = 0, carry = 0; + + /* Unscale m and round if necessary */ + if (*m % DPLL_SCALE_FACTOR >= DPLL_ROUNDING_VAL) + carry = 1; + *m = (*m / DPLL_SCALE_FACTOR) + carry; + + /* + * The new rate must be <= the target rate to avoid programming + * a rate that is impossible for the hardware to handle + */ + *new_rate = _dpll_compute_new_rate(parent_rate, *m, n); + if (*new_rate > target_rate) { + (*m)--; + *new_rate = 0; + } + + /* Guard against m underflow */ + if (*m < DPLL_MIN_MULTIPLIER) { + *m = DPLL_MIN_MULTIPLIER; + *new_rate = 0; + r = DPLL_MULT_UNDERFLOW; + } + + if (*new_rate == 0) + *new_rate = _dpll_compute_new_rate(parent_rate, *m, n); + + return r; +} + +/** + * _omap2_dpll_is_in_bypass - check if DPLL is in bypass mode or not + * @v: bitfield value of the DPLL enable + * + * Checks given DPLL enable bitfield to see whether the DPLL is in bypass + * mode or not. Returns 1 if the DPLL is in bypass, 0 otherwise. + */ +static int _omap2_dpll_is_in_bypass(u32 v) +{ + u8 mask, val; + + mask = ti_clk_get_features()->dpll_bypass_vals; + + /* + * Each set bit in the mask corresponds to a bypass value equal + * to the bitshift. Go through each set-bit in the mask and + * compare against the given register value. + */ + while (mask) { + val = __ffs(mask); + mask ^= (1 << val); + if (v == val) + return 1; + } + + return 0; +} + +/* Public functions */ +u8 omap2_init_dpll_parent(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + u32 v; + struct dpll_data *dd; + + dd = clk->dpll_data; + if (!dd) + return -EINVAL; + + v = ti_clk_ll_ops->clk_readl(&dd->control_reg); + v &= dd->enable_mask; + v >>= __ffs(dd->enable_mask); + + /* Reparent the struct clk in case the dpll is in bypass */ + if (_omap2_dpll_is_in_bypass(v)) + return 1; + + return 0; +} + +/** + * omap2_get_dpll_rate - returns the current DPLL CLKOUT rate + * @clk: struct clk * of a DPLL + * + * DPLLs can be locked or bypassed - basically, enabled or disabled. + * When locked, the DPLL output depends on the M and N values. When + * bypassed, on OMAP2xxx, the output rate is either the 32KiHz clock + * or sys_clk. Bypass rates on OMAP3 depend on the DPLL: DPLLs 1 and + * 2 are bypassed with dpll1_fclk and dpll2_fclk respectively + * (generated by DPLL3), while DPLL 3, 4, and 5 bypass rates are sys_clk. + * Returns the current DPLL CLKOUT rate (*not* CLKOUTX2) if the DPLL is + * locked, or the appropriate bypass rate if the DPLL is bypassed, or 0 + * if the clock @clk is not a DPLL. + */ +unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk) +{ + u64 dpll_clk; + u32 dpll_mult, dpll_div, v; + struct dpll_data *dd; + + dd = clk->dpll_data; + if (!dd) + return 0; + + /* Return bypass rate if DPLL is bypassed */ + v = ti_clk_ll_ops->clk_readl(&dd->control_reg); + v &= dd->enable_mask; + v >>= __ffs(dd->enable_mask); + + if (_omap2_dpll_is_in_bypass(v)) + return clk_hw_get_rate(dd->clk_bypass); + + v = ti_clk_ll_ops->clk_readl(&dd->mult_div1_reg); + dpll_mult = v & dd->mult_mask; + dpll_mult >>= __ffs(dd->mult_mask); + dpll_div = v & dd->div1_mask; + dpll_div >>= __ffs(dd->div1_mask); + + dpll_clk = (u64)clk_hw_get_rate(dd->clk_ref) * dpll_mult; + do_div(dpll_clk, dpll_div + 1); + + return dpll_clk; +} + +/* DPLL rate rounding code */ + +/** + * omap2_dpll_round_rate - round a target rate for an OMAP DPLL + * @clk: struct clk * for a DPLL + * @target_rate: desired DPLL clock rate + * + * Given a DPLL and a desired target rate, round the target rate to a + * possible, programmable rate for this DPLL. Attempts to select the + * minimum possible n. Stores the computed (m, n) in the DPLL's + * dpll_data structure so set_rate() will not need to call this + * (expensive) function again. Returns ~0 if the target rate cannot + * be rounded, or the rounded rate upon success. + */ +long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate, + unsigned long *parent_rate) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + int m, n, r, scaled_max_m; + int min_delta_m = INT_MAX, min_delta_n = INT_MAX; + unsigned long scaled_rt_rp; + unsigned long new_rate = 0; + struct dpll_data *dd; + unsigned long ref_rate; + long delta; + long prev_min_delta = LONG_MAX; + const char *clk_name; + + if (!clk || !clk->dpll_data) + return ~0; + + dd = clk->dpll_data; + + if (dd->max_rate && target_rate > dd->max_rate) + target_rate = dd->max_rate; + + ref_rate = clk_hw_get_rate(dd->clk_ref); + clk_name = clk_hw_get_name(hw); + pr_debug("clock: %s: starting DPLL round_rate, target rate %lu\n", + clk_name, target_rate); + + scaled_rt_rp = target_rate / (ref_rate / DPLL_SCALE_FACTOR); + scaled_max_m = dd->max_multiplier * DPLL_SCALE_FACTOR; + + dd->last_rounded_rate = 0; + + for (n = dd->min_divider; n <= dd->max_divider; n++) { + /* Is the (input clk, divider) pair valid for the DPLL? */ + r = _dpll_test_fint(clk, n); + if (r == DPLL_FINT_UNDERFLOW) + break; + else if (r == DPLL_FINT_INVALID) + continue; + + /* Compute the scaled DPLL multiplier, based on the divider */ + m = scaled_rt_rp * n; + + /* + * Since we're counting n up, a m overflow means we + * can bail out completely (since as n increases in + * the next iteration, there's no way that m can + * increase beyond the current m) + */ + if (m > scaled_max_m) + break; + + r = _dpll_test_mult(&m, n, &new_rate, target_rate, + ref_rate); + + /* m can't be set low enough for this n - try with a larger n */ + if (r == DPLL_MULT_UNDERFLOW) + continue; + + /* skip rates above our target rate */ + delta = target_rate - new_rate; + if (delta < 0) + continue; + + if (delta < prev_min_delta) { + prev_min_delta = delta; + min_delta_m = m; + min_delta_n = n; + } + + pr_debug("clock: %s: m = %d: n = %d: new_rate = %lu\n", + clk_name, m, n, new_rate); + + if (delta == 0) + break; + } + + if (prev_min_delta == LONG_MAX) { + pr_debug("clock: %s: cannot round to rate %lu\n", + clk_name, target_rate); + return ~0; + } + + dd->last_rounded_m = min_delta_m; + dd->last_rounded_n = min_delta_n; + dd->last_rounded_rate = target_rate - prev_min_delta; + + return dd->last_rounded_rate; +} diff --git a/drivers/clk/ti/clkt_iclk.c b/drivers/clk/ti/clkt_iclk.c new file mode 100644 index 000000000..60b583d7d --- /dev/null +++ b/drivers/clk/ti/clkt_iclk.c @@ -0,0 +1,100 @@ +/* + * OMAP2/3 interface clock control + * + * Copyright (C) 2011 Nokia Corporation + * Paul Walmsley + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#undef DEBUG + +#include <linux/kernel.h> +#include <linux/clk-provider.h> +#include <linux/io.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +/* Register offsets */ +#define OMAP24XX_CM_FCLKEN2 0x04 +#define CM_AUTOIDLE 0x30 +#define CM_ICLKEN 0x10 +#define CM_IDLEST 0x20 + +#define OMAP24XX_CM_IDLEST_VAL 0 + +/* Private functions */ + +/* XXX */ +void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk) +{ + u32 v; + struct clk_omap_reg r; + + memcpy(&r, &clk->enable_reg, sizeof(r)); + r.offset ^= (CM_AUTOIDLE ^ CM_ICLKEN); + + v = ti_clk_ll_ops->clk_readl(&r); + v |= (1 << clk->enable_bit); + ti_clk_ll_ops->clk_writel(v, &r); +} + +/* XXX */ +void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk) +{ + u32 v; + struct clk_omap_reg r; + + memcpy(&r, &clk->enable_reg, sizeof(r)); + + r.offset ^= (CM_AUTOIDLE ^ CM_ICLKEN); + + v = ti_clk_ll_ops->clk_readl(&r); + v &= ~(1 << clk->enable_bit); + ti_clk_ll_ops->clk_writel(v, &r); +} + +/** + * omap2430_clk_i2chs_find_idlest - return CM_IDLEST info for 2430 I2CHS + * @clk: struct clk * being enabled + * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into + * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into + * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator + * + * OMAP2430 I2CHS CM_IDLEST bits are in CM_IDLEST1_CORE, but the + * CM_*CLKEN bits are in CM_{I,F}CLKEN2_CORE. This custom function + * passes back the correct CM_IDLEST register address for I2CHS + * modules. No return value. + */ +static void omap2430_clk_i2chs_find_idlest(struct clk_hw_omap *clk, + struct clk_omap_reg *idlest_reg, + u8 *idlest_bit, + u8 *idlest_val) +{ + memcpy(idlest_reg, &clk->enable_reg, sizeof(*idlest_reg)); + idlest_reg->offset ^= (OMAP24XX_CM_FCLKEN2 ^ CM_IDLEST); + *idlest_bit = clk->enable_bit; + *idlest_val = OMAP24XX_CM_IDLEST_VAL; +} + +/* Public data */ + +const struct clk_hw_omap_ops clkhwops_iclk = { + .allow_idle = omap2_clkt_iclk_allow_idle, + .deny_idle = omap2_clkt_iclk_deny_idle, +}; + +const struct clk_hw_omap_ops clkhwops_iclk_wait = { + .allow_idle = omap2_clkt_iclk_allow_idle, + .deny_idle = omap2_clkt_iclk_deny_idle, + .find_idlest = omap2_clk_dflt_find_idlest, + .find_companion = omap2_clk_dflt_find_companion, +}; + +/* 2430 I2CHS has non-standard IDLEST register */ +const struct clk_hw_omap_ops clkhwops_omap2430_i2chs_wait = { + .find_idlest = omap2430_clk_i2chs_find_idlest, + .find_companion = omap2_clk_dflt_find_companion, +}; diff --git a/drivers/clk/ti/clock.h b/drivers/clk/ti/clock.h new file mode 100644 index 000000000..b58278077 --- /dev/null +++ b/drivers/clk/ti/clock.h @@ -0,0 +1,296 @@ +/* + * TI Clock driver internal definitions + * + * Copyright (C) 2014 Texas Instruments, Inc + * Tero Kristo (t-kristo@ti.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef __DRIVERS_CLK_TI_CLOCK__ +#define __DRIVERS_CLK_TI_CLOCK__ + +struct clk_omap_divider { + struct clk_hw hw; + struct clk_omap_reg reg; + u8 shift; + u8 width; + u8 flags; + s8 latch; + const struct clk_div_table *table; +}; + +#define to_clk_omap_divider(_hw) container_of(_hw, struct clk_omap_divider, hw) + +struct clk_omap_mux { + struct clk_hw hw; + struct clk_omap_reg reg; + u32 *table; + u32 mask; + u8 shift; + s8 latch; + u8 flags; +}; + +#define to_clk_omap_mux(_hw) container_of(_hw, struct clk_omap_mux, hw) + +enum { + TI_CLK_FIXED, + TI_CLK_MUX, + TI_CLK_DIVIDER, + TI_CLK_COMPOSITE, + TI_CLK_FIXED_FACTOR, + TI_CLK_GATE, + TI_CLK_DPLL, +}; + +/* Global flags */ +#define CLKF_INDEX_POWER_OF_TWO (1 << 0) +#define CLKF_INDEX_STARTS_AT_ONE (1 << 1) +#define CLKF_SET_RATE_PARENT (1 << 2) +#define CLKF_OMAP3 (1 << 3) +#define CLKF_AM35XX (1 << 4) + +/* Gate flags */ +#define CLKF_SET_BIT_TO_DISABLE (1 << 5) +#define CLKF_INTERFACE (1 << 6) +#define CLKF_SSI (1 << 7) +#define CLKF_DSS (1 << 8) +#define CLKF_HSOTGUSB (1 << 9) +#define CLKF_WAIT (1 << 10) +#define CLKF_NO_WAIT (1 << 11) +#define CLKF_HSDIV (1 << 12) +#define CLKF_CLKDM (1 << 13) + +/* DPLL flags */ +#define CLKF_LOW_POWER_STOP (1 << 5) +#define CLKF_LOCK (1 << 6) +#define CLKF_LOW_POWER_BYPASS (1 << 7) +#define CLKF_PER (1 << 8) +#define CLKF_CORE (1 << 9) +#define CLKF_J_TYPE (1 << 10) + +/* CLKCTRL flags */ +#define CLKF_SW_SUP BIT(5) +#define CLKF_HW_SUP BIT(6) +#define CLKF_NO_IDLEST BIT(7) + +#define CLK(dev, con, ck) \ + { \ + .lk = { \ + .dev_id = dev, \ + .con_id = con, \ + }, \ + .clk = ck, \ + } + +struct ti_clk { + const char *name; + const char *clkdm_name; + int type; + void *data; + struct ti_clk *patch; + struct clk *clk; +}; + +struct ti_clk_mux { + u8 bit_shift; + int num_parents; + u16 reg; + u8 module; + const char * const *parents; + u16 flags; +}; + +struct ti_clk_divider { + const char *parent; + u8 bit_shift; + u16 max_div; + u16 reg; + u8 module; + int *dividers; + int num_dividers; + u16 flags; +}; + +struct ti_clk_gate { + const char *parent; + u8 bit_shift; + u16 reg; + u8 module; + u16 flags; +}; + +/* Composite clock component types */ +enum { + CLK_COMPONENT_TYPE_GATE = 0, + CLK_COMPONENT_TYPE_DIVIDER, + CLK_COMPONENT_TYPE_MUX, + CLK_COMPONENT_TYPE_MAX, +}; + +/** + * struct ti_dt_clk - OMAP DT clock alias declarations + * @lk: clock lookup definition + * @node_name: clock DT node to map to + */ +struct ti_dt_clk { + struct clk_lookup lk; + char *node_name; +}; + +#define DT_CLK(dev, con, name) \ + { \ + .lk = { \ + .dev_id = dev, \ + .con_id = con, \ + }, \ + .node_name = name, \ + } + +/* CLKCTRL type definitions */ +struct omap_clkctrl_div_data { + const int *dividers; + int max_div; + u32 flags; +}; + +struct omap_clkctrl_bit_data { + u8 bit; + u8 type; + const char * const *parents; + const void *data; +}; + +struct omap_clkctrl_reg_data { + u16 offset; + const struct omap_clkctrl_bit_data *bit_data; + u16 flags; + const char *parent; + const char *clkdm_name; +}; + +struct omap_clkctrl_data { + u32 addr; + const struct omap_clkctrl_reg_data *regs; +}; + +extern const struct omap_clkctrl_data omap4_clkctrl_data[]; +extern const struct omap_clkctrl_data omap5_clkctrl_data[]; +extern const struct omap_clkctrl_data dra7_clkctrl_data[]; +extern const struct omap_clkctrl_data am3_clkctrl_data[]; +extern const struct omap_clkctrl_data am4_clkctrl_data[]; +extern const struct omap_clkctrl_data am438x_clkctrl_data[]; +extern const struct omap_clkctrl_data dm814_clkctrl_data[]; +extern const struct omap_clkctrl_data dm816_clkctrl_data[]; + +typedef void (*ti_of_clk_init_cb_t)(void *, struct device_node *); + +struct clk *ti_clk_register(struct device *dev, struct clk_hw *hw, + const char *con); +int ti_clk_add_alias(struct device *dev, struct clk *clk, const char *con); +void ti_clk_add_aliases(void); + +void ti_clk_latch(struct clk_omap_reg *reg, s8 shift); + +struct clk_hw *ti_clk_build_component_mux(struct ti_clk_mux *setup); + +int ti_clk_parse_divider_data(int *div_table, int num_dividers, int max_div, + u8 flags, u8 *width, + const struct clk_div_table **table); + +int ti_clk_get_reg_addr(struct device_node *node, int index, + struct clk_omap_reg *reg); +void ti_dt_clocks_register(struct ti_dt_clk *oclks); +int ti_clk_retry_init(struct device_node *node, void *user, + ti_of_clk_init_cb_t func); +int ti_clk_add_component(struct device_node *node, struct clk_hw *hw, int type); + +void omap2_init_clk_hw_omap_clocks(struct clk_hw *hw); +int of_ti_clk_autoidle_setup(struct device_node *node); +void omap2_clk_enable_init_clocks(const char **clk_names, u8 num_clocks); + +extern const struct clk_hw_omap_ops clkhwops_omap3_dpll; +extern const struct clk_hw_omap_ops clkhwops_omap4_dpllmx; +extern const struct clk_hw_omap_ops clkhwops_wait; +extern const struct clk_hw_omap_ops clkhwops_iclk; +extern const struct clk_hw_omap_ops clkhwops_iclk_wait; +extern const struct clk_hw_omap_ops clkhwops_omap2430_i2chs_wait; +extern const struct clk_hw_omap_ops clkhwops_omap3430es2_dss_usbhost_wait; +extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_hsotgusb_wait; +extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_dss_usbhost_wait; +extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait; +extern const struct clk_hw_omap_ops clkhwops_am35xx_ipss_module_wait; +extern const struct clk_hw_omap_ops clkhwops_am35xx_ipss_wait; + +extern const struct clk_ops ti_clk_divider_ops; +extern const struct clk_ops ti_clk_mux_ops; +extern const struct clk_ops omap_gate_clk_ops; + +void omap2_init_clk_clkdm(struct clk_hw *hw); +int omap2_clkops_enable_clkdm(struct clk_hw *hw); +void omap2_clkops_disable_clkdm(struct clk_hw *hw); + +int omap2_dflt_clk_enable(struct clk_hw *hw); +void omap2_dflt_clk_disable(struct clk_hw *hw); +int omap2_dflt_clk_is_enabled(struct clk_hw *hw); +void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk, + struct clk_omap_reg *other_reg, + u8 *other_bit); +void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk, + struct clk_omap_reg *idlest_reg, + u8 *idlest_bit, u8 *idlest_val); + +void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk); +void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk); + +u8 omap2_init_dpll_parent(struct clk_hw *hw); +int omap3_noncore_dpll_enable(struct clk_hw *hw); +void omap3_noncore_dpll_disable(struct clk_hw *hw); +int omap3_noncore_dpll_set_parent(struct clk_hw *hw, u8 index); +int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate); +int omap3_noncore_dpll_set_rate_and_parent(struct clk_hw *hw, + unsigned long rate, + unsigned long parent_rate, + u8 index); +int omap3_noncore_dpll_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req); +long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate, + unsigned long *parent_rate); +unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw, + unsigned long parent_rate); + +/* + * OMAP3_DPLL5_FREQ_FOR_USBHOST: USBHOST and USBTLL are the only clocks + * that are sourced by DPLL5, and both of these require this clock + * to be at 120 MHz for proper operation. + */ +#define OMAP3_DPLL5_FREQ_FOR_USBHOST 120000000 + +unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate); +int omap3_dpll4_set_rate(struct clk_hw *clk, unsigned long rate, + unsigned long parent_rate); +int omap3_dpll4_set_rate_and_parent(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate, u8 index); +int omap3_dpll5_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate); +void omap3_clk_lock_dpll5(void); + +unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw, + unsigned long parent_rate); +long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw, + unsigned long target_rate, + unsigned long *parent_rate); +int omap4_dpll_regm4xen_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req); + +extern struct ti_clk_ll_ops *ti_clk_ll_ops; + +#endif diff --git a/drivers/clk/ti/clockdomain.c b/drivers/clk/ti/clockdomain.c new file mode 100644 index 000000000..11d92311e --- /dev/null +++ b/drivers/clk/ti/clockdomain.c @@ -0,0 +1,178 @@ +/* + * OMAP clockdomain support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +/** + * omap2_clkops_enable_clkdm - increment usecount on clkdm of @hw + * @hw: struct clk_hw * of the clock being enabled + * + * Increment the usecount of the clockdomain of the clock pointed to + * by @hw; if the usecount is 1, the clockdomain will be "enabled." + * Only needed for clocks that don't use omap2_dflt_clk_enable() as + * their enable function pointer. Passes along the return value of + * clkdm_clk_enable(), -EINVAL if @hw is not associated with a + * clockdomain, or 0 if clock framework-based clockdomain control is + * not implemented. + */ +int omap2_clkops_enable_clkdm(struct clk_hw *hw) +{ + struct clk_hw_omap *clk; + int ret = 0; + + clk = to_clk_hw_omap(hw); + + if (unlikely(!clk->clkdm)) { + pr_err("%s: %s: no clkdm set ?!\n", __func__, + clk_hw_get_name(hw)); + return -EINVAL; + } + + if (ti_clk_get_features()->flags & TI_CLK_DISABLE_CLKDM_CONTROL) { + pr_err("%s: %s: clkfw-based clockdomain control disabled ?!\n", + __func__, clk_hw_get_name(hw)); + return 0; + } + + ret = ti_clk_ll_ops->clkdm_clk_enable(clk->clkdm, hw->clk); + WARN(ret, "%s: could not enable %s's clockdomain %s: %d\n", + __func__, clk_hw_get_name(hw), clk->clkdm_name, ret); + + return ret; +} + +/** + * omap2_clkops_disable_clkdm - decrement usecount on clkdm of @hw + * @hw: struct clk_hw * of the clock being disabled + * + * Decrement the usecount of the clockdomain of the clock pointed to + * by @hw; if the usecount is 0, the clockdomain will be "disabled." + * Only needed for clocks that don't use omap2_dflt_clk_disable() as their + * disable function pointer. No return value. + */ +void omap2_clkops_disable_clkdm(struct clk_hw *hw) +{ + struct clk_hw_omap *clk; + + clk = to_clk_hw_omap(hw); + + if (unlikely(!clk->clkdm)) { + pr_err("%s: %s: no clkdm set ?!\n", __func__, + clk_hw_get_name(hw)); + return; + } + + if (ti_clk_get_features()->flags & TI_CLK_DISABLE_CLKDM_CONTROL) { + pr_err("%s: %s: clkfw-based clockdomain control disabled ?!\n", + __func__, clk_hw_get_name(hw)); + return; + } + + ti_clk_ll_ops->clkdm_clk_disable(clk->clkdm, hw->clk); +} + +/** + * omap2_init_clk_clkdm - look up a clockdomain name, store pointer in clk + * @clk: OMAP clock struct ptr to use + * + * Convert a clockdomain name stored in a struct clk 'clk' into a + * clockdomain pointer, and save it into the struct clk. Intended to be + * called during clk_register(). No return value. + */ +void omap2_init_clk_clkdm(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct clockdomain *clkdm; + const char *clk_name; + + if (!clk->clkdm_name) + return; + + clk_name = __clk_get_name(hw->clk); + + clkdm = ti_clk_ll_ops->clkdm_lookup(clk->clkdm_name); + if (clkdm) { + pr_debug("clock: associated clk %s to clkdm %s\n", + clk_name, clk->clkdm_name); + clk->clkdm = clkdm; + } else { + pr_debug("clock: could not associate clk %s to clkdm %s\n", + clk_name, clk->clkdm_name); + } +} + +static void __init of_ti_clockdomain_setup(struct device_node *node) +{ + struct clk *clk; + struct clk_hw *clk_hw; + const char *clkdm_name = node->name; + int i; + unsigned int num_clks; + + num_clks = of_clk_get_parent_count(node); + + for (i = 0; i < num_clks; i++) { + clk = of_clk_get(node, i); + if (IS_ERR(clk)) { + pr_err("%s: Failed get %pOF' clock nr %d (%ld)\n", + __func__, node, i, PTR_ERR(clk)); + continue; + } + clk_hw = __clk_get_hw(clk); + if (clk_hw_get_flags(clk_hw) & CLK_IS_BASIC) { + pr_warn("can't setup clkdm for basic clk %s\n", + __clk_get_name(clk)); + clk_put(clk); + continue; + } + to_clk_hw_omap(clk_hw)->clkdm_name = clkdm_name; + omap2_init_clk_clkdm(clk_hw); + clk_put(clk); + } +} + +static const struct of_device_id ti_clkdm_match_table[] __initconst = { + { .compatible = "ti,clockdomain" }, + { } +}; + +/** + * ti_dt_clockdomains_setup - setup device tree clockdomains + * + * Initializes clockdomain nodes for a SoC. This parses through all the + * nodes with compatible = "ti,clockdomain", and add the clockdomain + * info for all the clocks listed under these. This function shall be + * called after rest of the DT clock init has completed and all + * clock nodes have been registered. + */ +void __init ti_dt_clockdomains_setup(void) +{ + struct device_node *np; + for_each_matching_node(np, ti_clkdm_match_table) { + of_ti_clockdomain_setup(np); + } +} diff --git a/drivers/clk/ti/composite.c b/drivers/clk/ti/composite.c new file mode 100644 index 000000000..c6478d0b9 --- /dev/null +++ b/drivers/clk/ti/composite.c @@ -0,0 +1,276 @@ +/* + * TI composite clock support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> +#include <linux/list.h> + +#include "clock.h" + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +static unsigned long ti_composite_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + return ti_clk_divider_ops.recalc_rate(hw, parent_rate); +} + +static long ti_composite_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) +{ + return -EINVAL; +} + +static int ti_composite_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + return -EINVAL; +} + +static const struct clk_ops ti_composite_divider_ops = { + .recalc_rate = &ti_composite_recalc_rate, + .round_rate = &ti_composite_round_rate, + .set_rate = &ti_composite_set_rate, +}; + +static const struct clk_ops ti_composite_gate_ops = { + .enable = &omap2_dflt_clk_enable, + .disable = &omap2_dflt_clk_disable, + .is_enabled = &omap2_dflt_clk_is_enabled, +}; + +struct component_clk { + int num_parents; + const char **parent_names; + struct device_node *node; + int type; + struct clk_hw *hw; + struct list_head link; +}; + +static const char * const component_clk_types[] __initconst = { + "gate", "divider", "mux" +}; + +static LIST_HEAD(component_clks); + +static struct device_node *_get_component_node(struct device_node *node, int i) +{ + int rc; + struct of_phandle_args clkspec; + + rc = of_parse_phandle_with_args(node, "clocks", "#clock-cells", i, + &clkspec); + if (rc) + return NULL; + + return clkspec.np; +} + +static struct component_clk *_lookup_component(struct device_node *node) +{ + struct component_clk *comp; + + list_for_each_entry(comp, &component_clks, link) { + if (comp->node == node) + return comp; + } + return NULL; +} + +struct clk_hw_omap_comp { + struct clk_hw hw; + struct device_node *comp_nodes[CLK_COMPONENT_TYPE_MAX]; + struct component_clk *comp_clks[CLK_COMPONENT_TYPE_MAX]; +}; + +static inline struct clk_hw *_get_hw(struct clk_hw_omap_comp *clk, int idx) +{ + if (!clk) + return NULL; + + if (!clk->comp_clks[idx]) + return NULL; + + return clk->comp_clks[idx]->hw; +} + +#define to_clk_hw_comp(_hw) container_of(_hw, struct clk_hw_omap_comp, hw) + +static void __init _register_composite(void *user, + struct device_node *node) +{ + struct clk_hw *hw = user; + struct clk *clk; + struct clk_hw_omap_comp *cclk = to_clk_hw_comp(hw); + struct component_clk *comp; + int num_parents = 0; + const char **parent_names = NULL; + int i; + int ret; + + /* Check for presence of each component clock */ + for (i = 0; i < CLK_COMPONENT_TYPE_MAX; i++) { + if (!cclk->comp_nodes[i]) + continue; + + comp = _lookup_component(cclk->comp_nodes[i]); + if (!comp) { + pr_debug("component %s not ready for %s, retry\n", + cclk->comp_nodes[i]->name, node->name); + if (!ti_clk_retry_init(node, hw, + _register_composite)) + return; + + goto cleanup; + } + if (cclk->comp_clks[comp->type] != NULL) { + pr_err("duplicate component types for %s (%s)!\n", + node->name, component_clk_types[comp->type]); + goto cleanup; + } + + cclk->comp_clks[comp->type] = comp; + + /* Mark this node as found */ + cclk->comp_nodes[i] = NULL; + } + + /* All components exists, proceed with registration */ + for (i = CLK_COMPONENT_TYPE_MAX - 1; i >= 0; i--) { + comp = cclk->comp_clks[i]; + if (!comp) + continue; + if (comp->num_parents) { + num_parents = comp->num_parents; + parent_names = comp->parent_names; + break; + } + } + + if (!num_parents) { + pr_err("%s: no parents found for %s!\n", __func__, node->name); + goto cleanup; + } + + clk = clk_register_composite(NULL, node->name, + parent_names, num_parents, + _get_hw(cclk, CLK_COMPONENT_TYPE_MUX), + &ti_clk_mux_ops, + _get_hw(cclk, CLK_COMPONENT_TYPE_DIVIDER), + &ti_composite_divider_ops, + _get_hw(cclk, CLK_COMPONENT_TYPE_GATE), + &ti_composite_gate_ops, 0); + + if (!IS_ERR(clk)) { + ret = ti_clk_add_alias(NULL, clk, node->name); + if (ret) { + clk_unregister(clk); + goto cleanup; + } + of_clk_add_provider(node, of_clk_src_simple_get, clk); + } + +cleanup: + /* Free component clock list entries */ + for (i = 0; i < CLK_COMPONENT_TYPE_MAX; i++) { + if (!cclk->comp_clks[i]) + continue; + list_del(&cclk->comp_clks[i]->link); + kfree(cclk->comp_clks[i]->parent_names); + kfree(cclk->comp_clks[i]); + } + + kfree(cclk); +} + +static void __init of_ti_composite_clk_setup(struct device_node *node) +{ + unsigned int num_clks; + int i; + struct clk_hw_omap_comp *cclk; + + /* Number of component clocks to be put inside this clock */ + num_clks = of_clk_get_parent_count(node); + + if (!num_clks) { + pr_err("composite clk %s must have component(s)\n", node->name); + return; + } + + cclk = kzalloc(sizeof(*cclk), GFP_KERNEL); + if (!cclk) + return; + + /* Get device node pointers for each component clock */ + for (i = 0; i < num_clks; i++) + cclk->comp_nodes[i] = _get_component_node(node, i); + + _register_composite(&cclk->hw, node); +} +CLK_OF_DECLARE(ti_composite_clock, "ti,composite-clock", + of_ti_composite_clk_setup); + +/** + * ti_clk_add_component - add a component clock to the pool + * @node: device node of the component clock + * @hw: hardware clock definition for the component clock + * @type: type of the component clock + * + * Adds a component clock to the list of available components, so that + * it can be registered by a composite clock. + */ +int __init ti_clk_add_component(struct device_node *node, struct clk_hw *hw, + int type) +{ + unsigned int num_parents; + const char **parent_names; + struct component_clk *clk; + + num_parents = of_clk_get_parent_count(node); + + if (!num_parents) { + pr_err("component-clock %s must have parent(s)\n", node->name); + return -EINVAL; + } + + parent_names = kzalloc((sizeof(char *) * num_parents), GFP_KERNEL); + if (!parent_names) + return -ENOMEM; + + of_clk_parent_fill(node, parent_names, num_parents); + + clk = kzalloc(sizeof(*clk), GFP_KERNEL); + if (!clk) { + kfree(parent_names); + return -ENOMEM; + } + + clk->num_parents = num_parents; + clk->parent_names = parent_names; + clk->hw = hw; + clk->node = node; + clk->type = type; + list_add(&clk->link, &component_clks); + + return 0; +} diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c new file mode 100644 index 000000000..079f0beda --- /dev/null +++ b/drivers/clk/ti/divider.c @@ -0,0 +1,676 @@ +/* + * TI Divider Clock + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/err.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> +#include "clock.h" + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +#define div_mask(d) ((1 << ((d)->width)) - 1) + +static unsigned int _get_table_maxdiv(const struct clk_div_table *table) +{ + unsigned int maxdiv = 0; + const struct clk_div_table *clkt; + + for (clkt = table; clkt->div; clkt++) + if (clkt->div > maxdiv) + maxdiv = clkt->div; + return maxdiv; +} + +static unsigned int _get_maxdiv(struct clk_omap_divider *divider) +{ + if (divider->flags & CLK_DIVIDER_ONE_BASED) + return div_mask(divider); + if (divider->flags & CLK_DIVIDER_POWER_OF_TWO) + return 1 << div_mask(divider); + if (divider->table) + return _get_table_maxdiv(divider->table); + return div_mask(divider) + 1; +} + +static unsigned int _get_table_div(const struct clk_div_table *table, + unsigned int val) +{ + const struct clk_div_table *clkt; + + for (clkt = table; clkt->div; clkt++) + if (clkt->val == val) + return clkt->div; + return 0; +} + +static unsigned int _get_div(struct clk_omap_divider *divider, unsigned int val) +{ + if (divider->flags & CLK_DIVIDER_ONE_BASED) + return val; + if (divider->flags & CLK_DIVIDER_POWER_OF_TWO) + return 1 << val; + if (divider->table) + return _get_table_div(divider->table, val); + return val + 1; +} + +static unsigned int _get_table_val(const struct clk_div_table *table, + unsigned int div) +{ + const struct clk_div_table *clkt; + + for (clkt = table; clkt->div; clkt++) + if (clkt->div == div) + return clkt->val; + return 0; +} + +static unsigned int _get_val(struct clk_omap_divider *divider, u8 div) +{ + if (divider->flags & CLK_DIVIDER_ONE_BASED) + return div; + if (divider->flags & CLK_DIVIDER_POWER_OF_TWO) + return __ffs(div); + if (divider->table) + return _get_table_val(divider->table, div); + return div - 1; +} + +static unsigned long ti_clk_divider_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_omap_divider *divider = to_clk_omap_divider(hw); + unsigned int div, val; + + val = ti_clk_ll_ops->clk_readl(÷r->reg) >> divider->shift; + val &= div_mask(divider); + + div = _get_div(divider, val); + if (!div) { + WARN(!(divider->flags & CLK_DIVIDER_ALLOW_ZERO), + "%s: Zero divisor and CLK_DIVIDER_ALLOW_ZERO not set\n", + clk_hw_get_name(hw)); + return parent_rate; + } + + return DIV_ROUND_UP(parent_rate, div); +} + +/* + * The reverse of DIV_ROUND_UP: The maximum number which + * divided by m is r + */ +#define MULT_ROUND_UP(r, m) ((r) * (m) + (m) - 1) + +static bool _is_valid_table_div(const struct clk_div_table *table, + unsigned int div) +{ + const struct clk_div_table *clkt; + + for (clkt = table; clkt->div; clkt++) + if (clkt->div == div) + return true; + return false; +} + +static bool _is_valid_div(struct clk_omap_divider *divider, unsigned int div) +{ + if (divider->flags & CLK_DIVIDER_POWER_OF_TWO) + return is_power_of_2(div); + if (divider->table) + return _is_valid_table_div(divider->table, div); + return true; +} + +static int _div_round_up(const struct clk_div_table *table, + unsigned long parent_rate, unsigned long rate) +{ + const struct clk_div_table *clkt; + int up = INT_MAX; + int div = DIV_ROUND_UP_ULL((u64)parent_rate, rate); + + for (clkt = table; clkt->div; clkt++) { + if (clkt->div == div) + return clkt->div; + else if (clkt->div < div) + continue; + + if ((clkt->div - div) < (up - div)) + up = clkt->div; + } + + return up; +} + +static int _div_round(const struct clk_div_table *table, + unsigned long parent_rate, unsigned long rate) +{ + if (!table) + return DIV_ROUND_UP(parent_rate, rate); + + return _div_round_up(table, parent_rate, rate); +} + +static int ti_clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate, + unsigned long *best_parent_rate) +{ + struct clk_omap_divider *divider = to_clk_omap_divider(hw); + int i, bestdiv = 0; + unsigned long parent_rate, best = 0, now, maxdiv; + unsigned long parent_rate_saved = *best_parent_rate; + + if (!rate) + rate = 1; + + maxdiv = _get_maxdiv(divider); + + if (!(clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT)) { + parent_rate = *best_parent_rate; + bestdiv = _div_round(divider->table, parent_rate, rate); + bestdiv = bestdiv == 0 ? 1 : bestdiv; + bestdiv = bestdiv > maxdiv ? maxdiv : bestdiv; + return bestdiv; + } + + /* + * The maximum divider we can use without overflowing + * unsigned long in rate * i below + */ + maxdiv = min(ULONG_MAX / rate, maxdiv); + + for (i = 1; i <= maxdiv; i++) { + if (!_is_valid_div(divider, i)) + continue; + if (rate * i == parent_rate_saved) { + /* + * It's the most ideal case if the requested rate can be + * divided from parent clock without needing to change + * parent rate, so return the divider immediately. + */ + *best_parent_rate = parent_rate_saved; + return i; + } + parent_rate = clk_hw_round_rate(clk_hw_get_parent(hw), + MULT_ROUND_UP(rate, i)); + now = DIV_ROUND_UP(parent_rate, i); + if (now <= rate && now > best) { + bestdiv = i; + best = now; + *best_parent_rate = parent_rate; + } + } + + if (!bestdiv) { + bestdiv = _get_maxdiv(divider); + *best_parent_rate = + clk_hw_round_rate(clk_hw_get_parent(hw), 1); + } + + return bestdiv; +} + +static long ti_clk_divider_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) +{ + int div; + div = ti_clk_divider_bestdiv(hw, rate, prate); + + return DIV_ROUND_UP(*prate, div); +} + +static int ti_clk_divider_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct clk_omap_divider *divider; + unsigned int div, value; + u32 val; + + if (!hw || !rate) + return -EINVAL; + + divider = to_clk_omap_divider(hw); + + div = DIV_ROUND_UP(parent_rate, rate); + value = _get_val(divider, div); + + if (value > div_mask(divider)) + value = div_mask(divider); + + if (divider->flags & CLK_DIVIDER_HIWORD_MASK) { + val = div_mask(divider) << (divider->shift + 16); + } else { + val = ti_clk_ll_ops->clk_readl(÷r->reg); + val &= ~(div_mask(divider) << divider->shift); + } + val |= value << divider->shift; + ti_clk_ll_ops->clk_writel(val, ÷r->reg); + + ti_clk_latch(÷r->reg, divider->latch); + + return 0; +} + +const struct clk_ops ti_clk_divider_ops = { + .recalc_rate = ti_clk_divider_recalc_rate, + .round_rate = ti_clk_divider_round_rate, + .set_rate = ti_clk_divider_set_rate, +}; + +static struct clk *_register_divider(struct device *dev, const char *name, + const char *parent_name, + unsigned long flags, + struct clk_omap_reg *reg, + u8 shift, u8 width, s8 latch, + u8 clk_divider_flags, + const struct clk_div_table *table) +{ + struct clk_omap_divider *div; + struct clk *clk; + struct clk_init_data init; + + if (clk_divider_flags & CLK_DIVIDER_HIWORD_MASK) { + if (width + shift > 16) { + pr_warn("divider value exceeds LOWORD field\n"); + return ERR_PTR(-EINVAL); + } + } + + /* allocate the divider */ + div = kzalloc(sizeof(*div), GFP_KERNEL); + if (!div) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &ti_clk_divider_ops; + init.flags = flags | CLK_IS_BASIC; + init.parent_names = (parent_name ? &parent_name : NULL); + init.num_parents = (parent_name ? 1 : 0); + + /* struct clk_divider assignments */ + memcpy(&div->reg, reg, sizeof(*reg)); + div->shift = shift; + div->width = width; + div->latch = latch; + div->flags = clk_divider_flags; + div->hw.init = &init; + div->table = table; + + /* register the clock */ + clk = ti_clk_register(dev, &div->hw, name); + + if (IS_ERR(clk)) + kfree(div); + + return clk; +} + +int ti_clk_parse_divider_data(int *div_table, int num_dividers, int max_div, + u8 flags, u8 *width, + const struct clk_div_table **table) +{ + int valid_div = 0; + u32 val; + int div; + int i; + struct clk_div_table *tmp; + + if (!div_table) { + if (flags & CLKF_INDEX_STARTS_AT_ONE) + val = 1; + else + val = 0; + + div = 1; + + while (div < max_div) { + if (flags & CLKF_INDEX_POWER_OF_TWO) + div <<= 1; + else + div++; + val++; + } + + *width = fls(val); + *table = NULL; + + return 0; + } + + i = 0; + + while (!num_dividers || i < num_dividers) { + if (div_table[i] == -1) + break; + if (div_table[i]) + valid_div++; + i++; + } + + num_dividers = i; + + tmp = kcalloc(valid_div + 1, sizeof(*tmp), GFP_KERNEL); + if (!tmp) { + *table = ERR_PTR(-ENOMEM); + return -ENOMEM; + } + + valid_div = 0; + *width = 0; + + for (i = 0; i < num_dividers; i++) + if (div_table[i] > 0) { + tmp[valid_div].div = div_table[i]; + tmp[valid_div].val = i; + valid_div++; + *width = i; + } + + *width = fls(*width); + *table = tmp; + + return 0; +} + +static const struct clk_div_table * +_get_div_table_from_setup(struct ti_clk_divider *setup, u8 *width) +{ + const struct clk_div_table *table = NULL; + + ti_clk_parse_divider_data(setup->dividers, setup->num_dividers, + setup->max_div, setup->flags, width, + &table); + + return table; +} + +struct clk_hw *ti_clk_build_component_div(struct ti_clk_divider *setup) +{ + struct clk_omap_divider *div; + struct clk_omap_reg *reg; + int ret; + + if (!setup) + return NULL; + + div = kzalloc(sizeof(*div), GFP_KERNEL); + if (!div) + return ERR_PTR(-ENOMEM); + + reg = (struct clk_omap_reg *)&div->reg; + reg->index = setup->module; + reg->offset = setup->reg; + + if (setup->flags & CLKF_INDEX_STARTS_AT_ONE) + div->flags |= CLK_DIVIDER_ONE_BASED; + + if (setup->flags & CLKF_INDEX_POWER_OF_TWO) + div->flags |= CLK_DIVIDER_POWER_OF_TWO; + + div->table = _get_div_table_from_setup(setup, &div->width); + if (IS_ERR(div->table)) { + ret = PTR_ERR(div->table); + kfree(div); + return ERR_PTR(ret); + } + + + div->shift = setup->bit_shift; + div->latch = -EINVAL; + + return &div->hw; +} + +struct clk *ti_clk_register_divider(struct ti_clk *setup) +{ + struct ti_clk_divider *div = setup->data; + struct clk_omap_reg reg = { + .index = div->module, + .offset = div->reg, + }; + u8 width; + u32 flags = 0; + u8 div_flags = 0; + const struct clk_div_table *table; + struct clk *clk; + + if (div->flags & CLKF_INDEX_STARTS_AT_ONE) + div_flags |= CLK_DIVIDER_ONE_BASED; + + if (div->flags & CLKF_INDEX_POWER_OF_TWO) + div_flags |= CLK_DIVIDER_POWER_OF_TWO; + + if (div->flags & CLKF_SET_RATE_PARENT) + flags |= CLK_SET_RATE_PARENT; + + table = _get_div_table_from_setup(div, &width); + if (IS_ERR(table)) + return (struct clk *)table; + + clk = _register_divider(NULL, setup->name, div->parent, + flags, ®, div->bit_shift, + width, -EINVAL, div_flags, table); + + if (IS_ERR(clk)) + kfree(table); + + return clk; +} + +static struct clk_div_table * +__init ti_clk_get_div_table(struct device_node *node) +{ + struct clk_div_table *table; + const __be32 *divspec; + u32 val; + u32 num_div; + u32 valid_div; + int i; + + divspec = of_get_property(node, "ti,dividers", &num_div); + + if (!divspec) + return NULL; + + num_div /= 4; + + valid_div = 0; + + /* Determine required size for divider table */ + for (i = 0; i < num_div; i++) { + of_property_read_u32_index(node, "ti,dividers", i, &val); + if (val) + valid_div++; + } + + if (!valid_div) { + pr_err("no valid dividers for %s table\n", node->name); + return ERR_PTR(-EINVAL); + } + + table = kcalloc(valid_div + 1, sizeof(*table), GFP_KERNEL); + + if (!table) + return ERR_PTR(-ENOMEM); + + valid_div = 0; + + for (i = 0; i < num_div; i++) { + of_property_read_u32_index(node, "ti,dividers", i, &val); + if (val) { + table[valid_div].div = val; + table[valid_div].val = i; + valid_div++; + } + } + + return table; +} + +static int _get_divider_width(struct device_node *node, + const struct clk_div_table *table, + u8 flags) +{ + u32 min_div; + u32 max_div; + u32 val = 0; + u32 div; + + if (!table) { + /* Clk divider table not provided, determine min/max divs */ + if (of_property_read_u32(node, "ti,min-div", &min_div)) + min_div = 1; + + if (of_property_read_u32(node, "ti,max-div", &max_div)) { + pr_err("no max-div for %s!\n", node->name); + return -EINVAL; + } + + /* Determine bit width for the field */ + if (flags & CLK_DIVIDER_ONE_BASED) + val = 1; + + div = min_div; + + while (div < max_div) { + if (flags & CLK_DIVIDER_POWER_OF_TWO) + div <<= 1; + else + div++; + val++; + } + } else { + div = 0; + + while (table[div].div) { + val = table[div].val; + div++; + } + } + + return fls(val); +} + +static int __init ti_clk_divider_populate(struct device_node *node, + struct clk_omap_reg *reg, const struct clk_div_table **table, + u32 *flags, u8 *div_flags, u8 *width, u8 *shift, s8 *latch) +{ + u32 val; + int ret; + + ret = ti_clk_get_reg_addr(node, 0, reg); + if (ret) + return ret; + + if (!of_property_read_u32(node, "ti,bit-shift", &val)) + *shift = val; + else + *shift = 0; + + if (latch) { + if (!of_property_read_u32(node, "ti,latch-bit", &val)) + *latch = val; + else + *latch = -EINVAL; + } + + *flags = 0; + *div_flags = 0; + + if (of_property_read_bool(node, "ti,index-starts-at-one")) + *div_flags |= CLK_DIVIDER_ONE_BASED; + + if (of_property_read_bool(node, "ti,index-power-of-two")) + *div_flags |= CLK_DIVIDER_POWER_OF_TWO; + + if (of_property_read_bool(node, "ti,set-rate-parent")) + *flags |= CLK_SET_RATE_PARENT; + + *table = ti_clk_get_div_table(node); + + if (IS_ERR(*table)) + return PTR_ERR(*table); + + *width = _get_divider_width(node, *table, *div_flags); + + return 0; +} + +/** + * of_ti_divider_clk_setup - Setup function for simple div rate clock + * @node: device node for this clock + * + * Sets up a basic divider clock. + */ +static void __init of_ti_divider_clk_setup(struct device_node *node) +{ + struct clk *clk; + const char *parent_name; + struct clk_omap_reg reg; + u8 clk_divider_flags = 0; + u8 width = 0; + u8 shift = 0; + s8 latch = -EINVAL; + const struct clk_div_table *table = NULL; + u32 flags = 0; + + parent_name = of_clk_get_parent_name(node, 0); + + if (ti_clk_divider_populate(node, ®, &table, &flags, + &clk_divider_flags, &width, &shift, &latch)) + goto cleanup; + + clk = _register_divider(NULL, node->name, parent_name, flags, ®, + shift, width, latch, clk_divider_flags, table); + + if (!IS_ERR(clk)) { + of_clk_add_provider(node, of_clk_src_simple_get, clk); + of_ti_clk_autoidle_setup(node); + return; + } + +cleanup: + kfree(table); +} +CLK_OF_DECLARE(divider_clk, "ti,divider-clock", of_ti_divider_clk_setup); + +static void __init of_ti_composite_divider_clk_setup(struct device_node *node) +{ + struct clk_omap_divider *div; + u32 val; + + div = kzalloc(sizeof(*div), GFP_KERNEL); + if (!div) + return; + + if (ti_clk_divider_populate(node, &div->reg, &div->table, &val, + &div->flags, &div->width, &div->shift, + NULL) < 0) + goto cleanup; + + if (!ti_clk_add_component(node, &div->hw, CLK_COMPONENT_TYPE_DIVIDER)) + return; + +cleanup: + kfree(div->table); + kfree(div); +} +CLK_OF_DECLARE(ti_composite_divider_clk, "ti,composite-divider-clock", + of_ti_composite_divider_clk_setup); diff --git a/drivers/clk/ti/dpll.c b/drivers/clk/ti/dpll.c new file mode 100644 index 000000000..dc86d07d0 --- /dev/null +++ b/drivers/clk/ti/dpll.c @@ -0,0 +1,691 @@ +/* + * OMAP DPLL clock support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/err.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> +#include "clock.h" + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \ + defined(CONFIG_SOC_DRA7XX) +static const struct clk_ops dpll_m4xen_ck_ops = { + .enable = &omap3_noncore_dpll_enable, + .disable = &omap3_noncore_dpll_disable, + .recalc_rate = &omap4_dpll_regm4xen_recalc, + .round_rate = &omap4_dpll_regm4xen_round_rate, + .set_rate = &omap3_noncore_dpll_set_rate, + .set_parent = &omap3_noncore_dpll_set_parent, + .set_rate_and_parent = &omap3_noncore_dpll_set_rate_and_parent, + .determine_rate = &omap4_dpll_regm4xen_determine_rate, + .get_parent = &omap2_init_dpll_parent, +}; +#else +static const struct clk_ops dpll_m4xen_ck_ops = {}; +#endif + +#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4) || \ + defined(CONFIG_SOC_OMAP5) || defined(CONFIG_SOC_DRA7XX) || \ + defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX) +static const struct clk_ops dpll_core_ck_ops = { + .recalc_rate = &omap3_dpll_recalc, + .get_parent = &omap2_init_dpll_parent, +}; + +static const struct clk_ops dpll_ck_ops = { + .enable = &omap3_noncore_dpll_enable, + .disable = &omap3_noncore_dpll_disable, + .recalc_rate = &omap3_dpll_recalc, + .round_rate = &omap2_dpll_round_rate, + .set_rate = &omap3_noncore_dpll_set_rate, + .set_parent = &omap3_noncore_dpll_set_parent, + .set_rate_and_parent = &omap3_noncore_dpll_set_rate_and_parent, + .determine_rate = &omap3_noncore_dpll_determine_rate, + .get_parent = &omap2_init_dpll_parent, +}; + +static const struct clk_ops dpll_no_gate_ck_ops = { + .recalc_rate = &omap3_dpll_recalc, + .get_parent = &omap2_init_dpll_parent, + .round_rate = &omap2_dpll_round_rate, + .set_rate = &omap3_noncore_dpll_set_rate, + .set_parent = &omap3_noncore_dpll_set_parent, + .set_rate_and_parent = &omap3_noncore_dpll_set_rate_and_parent, + .determine_rate = &omap3_noncore_dpll_determine_rate, +}; +#else +static const struct clk_ops dpll_core_ck_ops = {}; +static const struct clk_ops dpll_ck_ops = {}; +static const struct clk_ops dpll_no_gate_ck_ops = {}; +const struct clk_hw_omap_ops clkhwops_omap3_dpll = {}; +#endif + +#ifdef CONFIG_ARCH_OMAP2 +static const struct clk_ops omap2_dpll_core_ck_ops = { + .get_parent = &omap2_init_dpll_parent, + .recalc_rate = &omap2_dpllcore_recalc, + .round_rate = &omap2_dpll_round_rate, + .set_rate = &omap2_reprogram_dpllcore, +}; +#else +static const struct clk_ops omap2_dpll_core_ck_ops = {}; +#endif + +#ifdef CONFIG_ARCH_OMAP3 +static const struct clk_ops omap3_dpll_core_ck_ops = { + .get_parent = &omap2_init_dpll_parent, + .recalc_rate = &omap3_dpll_recalc, + .round_rate = &omap2_dpll_round_rate, +}; +#else +static const struct clk_ops omap3_dpll_core_ck_ops = {}; +#endif + +#ifdef CONFIG_ARCH_OMAP3 +static const struct clk_ops omap3_dpll_ck_ops = { + .enable = &omap3_noncore_dpll_enable, + .disable = &omap3_noncore_dpll_disable, + .get_parent = &omap2_init_dpll_parent, + .recalc_rate = &omap3_dpll_recalc, + .set_rate = &omap3_noncore_dpll_set_rate, + .set_parent = &omap3_noncore_dpll_set_parent, + .set_rate_and_parent = &omap3_noncore_dpll_set_rate_and_parent, + .determine_rate = &omap3_noncore_dpll_determine_rate, + .round_rate = &omap2_dpll_round_rate, +}; + +static const struct clk_ops omap3_dpll5_ck_ops = { + .enable = &omap3_noncore_dpll_enable, + .disable = &omap3_noncore_dpll_disable, + .get_parent = &omap2_init_dpll_parent, + .recalc_rate = &omap3_dpll_recalc, + .set_rate = &omap3_dpll5_set_rate, + .set_parent = &omap3_noncore_dpll_set_parent, + .set_rate_and_parent = &omap3_noncore_dpll_set_rate_and_parent, + .determine_rate = &omap3_noncore_dpll_determine_rate, + .round_rate = &omap2_dpll_round_rate, +}; + +static const struct clk_ops omap3_dpll_per_ck_ops = { + .enable = &omap3_noncore_dpll_enable, + .disable = &omap3_noncore_dpll_disable, + .get_parent = &omap2_init_dpll_parent, + .recalc_rate = &omap3_dpll_recalc, + .set_rate = &omap3_dpll4_set_rate, + .set_parent = &omap3_noncore_dpll_set_parent, + .set_rate_and_parent = &omap3_dpll4_set_rate_and_parent, + .determine_rate = &omap3_noncore_dpll_determine_rate, + .round_rate = &omap2_dpll_round_rate, +}; +#endif + +static const struct clk_ops dpll_x2_ck_ops = { + .recalc_rate = &omap3_clkoutx2_recalc, +}; + +/** + * _register_dpll - low level registration of a DPLL clock + * @hw: hardware clock definition for the clock + * @node: device node for the clock + * + * Finalizes DPLL registration process. In case a failure (clk-ref or + * clk-bypass is missing), the clock is added to retry list and + * the initialization is retried on later stage. + */ +static void __init _register_dpll(void *user, + struct device_node *node) +{ + struct clk_hw *hw = user; + struct clk_hw_omap *clk_hw = to_clk_hw_omap(hw); + struct dpll_data *dd = clk_hw->dpll_data; + struct clk *clk; + + clk = of_clk_get(node, 0); + if (IS_ERR(clk)) { + pr_debug("clk-ref missing for %s, retry later\n", + node->name); + if (!ti_clk_retry_init(node, hw, _register_dpll)) + return; + + goto cleanup; + } + + dd->clk_ref = __clk_get_hw(clk); + + clk = of_clk_get(node, 1); + + if (IS_ERR(clk)) { + pr_debug("clk-bypass missing for %s, retry later\n", + node->name); + if (!ti_clk_retry_init(node, hw, _register_dpll)) + return; + + goto cleanup; + } + + dd->clk_bypass = __clk_get_hw(clk); + + /* register the clock */ + clk = ti_clk_register(NULL, &clk_hw->hw, node->name); + + if (!IS_ERR(clk)) { + omap2_init_clk_hw_omap_clocks(&clk_hw->hw); + of_clk_add_provider(node, of_clk_src_simple_get, clk); + kfree(clk_hw->hw.init->parent_names); + kfree(clk_hw->hw.init); + return; + } + +cleanup: + kfree(clk_hw->dpll_data); + kfree(clk_hw->hw.init->parent_names); + kfree(clk_hw->hw.init); + kfree(clk_hw); +} + +#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \ + defined(CONFIG_SOC_DRA7XX) || defined(CONFIG_SOC_AM33XX) || \ + defined(CONFIG_SOC_AM43XX) +/** + * _register_dpll_x2 - Registers a DPLLx2 clock + * @node: device node for this clock + * @ops: clk_ops for this clock + * @hw_ops: clk_hw_ops for this clock + * + * Initializes a DPLL x 2 clock from device tree data. + */ +static void _register_dpll_x2(struct device_node *node, + const struct clk_ops *ops, + const struct clk_hw_omap_ops *hw_ops) +{ + struct clk *clk; + struct clk_init_data init = { NULL }; + struct clk_hw_omap *clk_hw; + const char *name = node->name; + const char *parent_name; + + parent_name = of_clk_get_parent_name(node, 0); + if (!parent_name) { + pr_err("%s must have parent\n", node->name); + return; + } + + clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL); + if (!clk_hw) + return; + + clk_hw->ops = hw_ops; + clk_hw->hw.init = &init; + + init.name = name; + init.ops = ops; + init.parent_names = &parent_name; + init.num_parents = 1; + +#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \ + defined(CONFIG_SOC_DRA7XX) + if (hw_ops == &clkhwops_omap4_dpllmx) { + int ret; + + /* Check if register defined, if not, drop hw-ops */ + ret = of_property_count_elems_of_size(node, "reg", 1); + if (ret <= 0) { + clk_hw->ops = NULL; + } else if (ti_clk_get_reg_addr(node, 0, &clk_hw->clksel_reg)) { + kfree(clk_hw); + return; + } + } +#endif + + /* register the clock */ + clk = ti_clk_register(NULL, &clk_hw->hw, name); + + if (IS_ERR(clk)) { + kfree(clk_hw); + } else { + omap2_init_clk_hw_omap_clocks(&clk_hw->hw); + of_clk_add_provider(node, of_clk_src_simple_get, clk); + } +} +#endif + +/** + * of_ti_dpll_setup - Setup function for OMAP DPLL clocks + * @node: device node containing the DPLL info + * @ops: ops for the DPLL + * @ddt: DPLL data template to use + * + * Initializes a DPLL clock from device tree data. + */ +static void __init of_ti_dpll_setup(struct device_node *node, + const struct clk_ops *ops, + const struct dpll_data *ddt) +{ + struct clk_hw_omap *clk_hw = NULL; + struct clk_init_data *init = NULL; + const char **parent_names = NULL; + struct dpll_data *dd = NULL; + u8 dpll_mode = 0; + + dd = kzalloc(sizeof(*dd), GFP_KERNEL); + clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL); + init = kzalloc(sizeof(*init), GFP_KERNEL); + if (!dd || !clk_hw || !init) + goto cleanup; + + memcpy(dd, ddt, sizeof(*dd)); + + clk_hw->dpll_data = dd; + clk_hw->ops = &clkhwops_omap3_dpll; + clk_hw->hw.init = init; + + init->name = node->name; + init->ops = ops; + + init->num_parents = of_clk_get_parent_count(node); + if (!init->num_parents) { + pr_err("%s must have parent(s)\n", node->name); + goto cleanup; + } + + parent_names = kcalloc(init->num_parents, sizeof(char *), GFP_KERNEL); + if (!parent_names) + goto cleanup; + + of_clk_parent_fill(node, parent_names, init->num_parents); + + init->parent_names = parent_names; + + if (ti_clk_get_reg_addr(node, 0, &dd->control_reg)) + goto cleanup; + + /* + * Special case for OMAP2 DPLL, register order is different due to + * missing idlest_reg, also clkhwops is different. Detected from + * missing idlest_mask. + */ + if (!dd->idlest_mask) { + if (ti_clk_get_reg_addr(node, 1, &dd->mult_div1_reg)) + goto cleanup; +#ifdef CONFIG_ARCH_OMAP2 + clk_hw->ops = &clkhwops_omap2xxx_dpll; + omap2xxx_clkt_dpllcore_init(&clk_hw->hw); +#endif + } else { + if (ti_clk_get_reg_addr(node, 1, &dd->idlest_reg)) + goto cleanup; + + if (ti_clk_get_reg_addr(node, 2, &dd->mult_div1_reg)) + goto cleanup; + } + + if (dd->autoidle_mask) { + if (ti_clk_get_reg_addr(node, 3, &dd->autoidle_reg)) + goto cleanup; + } + + if (of_property_read_bool(node, "ti,low-power-stop")) + dpll_mode |= 1 << DPLL_LOW_POWER_STOP; + + if (of_property_read_bool(node, "ti,low-power-bypass")) + dpll_mode |= 1 << DPLL_LOW_POWER_BYPASS; + + if (of_property_read_bool(node, "ti,lock")) + dpll_mode |= 1 << DPLL_LOCKED; + + if (dpll_mode) + dd->modes = dpll_mode; + + _register_dpll(&clk_hw->hw, node); + return; + +cleanup: + kfree(dd); + kfree(parent_names); + kfree(init); + kfree(clk_hw); +} + +#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \ + defined(CONFIG_SOC_DRA7XX) +static void __init of_ti_omap4_dpll_x2_setup(struct device_node *node) +{ + _register_dpll_x2(node, &dpll_x2_ck_ops, &clkhwops_omap4_dpllmx); +} +CLK_OF_DECLARE(ti_omap4_dpll_x2_clock, "ti,omap4-dpll-x2-clock", + of_ti_omap4_dpll_x2_setup); +#endif + +#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX) +static void __init of_ti_am3_dpll_x2_setup(struct device_node *node) +{ + _register_dpll_x2(node, &dpll_x2_ck_ops, NULL); +} +CLK_OF_DECLARE(ti_am3_dpll_x2_clock, "ti,am3-dpll-x2-clock", + of_ti_am3_dpll_x2_setup); +#endif + +#ifdef CONFIG_ARCH_OMAP3 +static void __init of_ti_omap3_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .autoidle_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .freqsel_mask = 0xf0, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + if ((of_machine_is_compatible("ti,omap3630") || + of_machine_is_compatible("ti,omap36xx")) && + !strcmp(node->name, "dpll5_ck")) + of_ti_dpll_setup(node, &omap3_dpll5_ck_ops, &dd); + else + of_ti_dpll_setup(node, &omap3_dpll_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_omap3_dpll_clock, "ti,omap3-dpll-clock", + of_ti_omap3_dpll_setup); + +static void __init of_ti_omap3_core_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .autoidle_mask = 0x7, + .mult_mask = 0x7ff << 16, + .div1_mask = 0x7f << 8, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .freqsel_mask = 0xf0, + }; + + of_ti_dpll_setup(node, &omap3_dpll_core_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_omap3_core_dpll_clock, "ti,omap3-dpll-core-clock", + of_ti_omap3_core_dpll_setup); + +static void __init of_ti_omap3_per_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1 << 1, + .enable_mask = 0x7 << 16, + .autoidle_mask = 0x7 << 3, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .freqsel_mask = 0xf00000, + .modes = (1 << DPLL_LOW_POWER_STOP) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &omap3_dpll_per_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_omap3_per_dpll_clock, "ti,omap3-dpll-per-clock", + of_ti_omap3_per_dpll_setup); + +static void __init of_ti_omap3_per_jtype_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1 << 1, + .enable_mask = 0x7 << 16, + .autoidle_mask = 0x7 << 3, + .mult_mask = 0xfff << 8, + .div1_mask = 0x7f, + .max_multiplier = 4095, + .max_divider = 128, + .min_divider = 1, + .sddiv_mask = 0xff << 24, + .dco_mask = 0xe << 20, + .flags = DPLL_J_TYPE, + .modes = (1 << DPLL_LOW_POWER_STOP) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &omap3_dpll_per_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_omap3_per_jtype_dpll_clock, "ti,omap3-dpll-per-j-type-clock", + of_ti_omap3_per_jtype_dpll_setup); +#endif + +static void __init of_ti_omap4_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .autoidle_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_omap4_dpll_clock, "ti,omap4-dpll-clock", + of_ti_omap4_dpll_setup); + +static void __init of_ti_omap5_mpu_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .autoidle_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .dcc_mask = BIT(22), + .dcc_rate = 1400000000, /* DCC beyond 1.4GHz */ + .min_divider = 1, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_ck_ops, &dd); +} +CLK_OF_DECLARE(of_ti_omap5_mpu_dpll_clock, "ti,omap5-mpu-dpll-clock", + of_ti_omap5_mpu_dpll_setup); + +static void __init of_ti_omap4_core_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .autoidle_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_core_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_omap4_core_dpll_clock, "ti,omap4-dpll-core-clock", + of_ti_omap4_core_dpll_setup); + +#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \ + defined(CONFIG_SOC_DRA7XX) +static void __init of_ti_omap4_m4xen_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .autoidle_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .m4xen_mask = 0x800, + .lpmode_mask = 1 << 10, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_m4xen_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_omap4_m4xen_dpll_clock, "ti,omap4-dpll-m4xen-clock", + of_ti_omap4_m4xen_dpll_setup); + +static void __init of_ti_omap4_jtype_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .autoidle_mask = 0x7, + .mult_mask = 0xfff << 8, + .div1_mask = 0xff, + .max_multiplier = 4095, + .max_divider = 256, + .min_divider = 1, + .sddiv_mask = 0xff << 24, + .flags = DPLL_J_TYPE, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_m4xen_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_omap4_jtype_dpll_clock, "ti,omap4-dpll-j-type-clock", + of_ti_omap4_jtype_dpll_setup); +#endif + +static void __init of_ti_am3_no_gate_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .max_rate = 1000000000, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_no_gate_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_am3_no_gate_dpll_clock, "ti,am3-dpll-no-gate-clock", + of_ti_am3_no_gate_dpll_setup); + +static void __init of_ti_am3_jtype_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 4095, + .max_divider = 256, + .min_divider = 2, + .flags = DPLL_J_TYPE, + .max_rate = 2000000000, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_am3_jtype_dpll_clock, "ti,am3-dpll-j-type-clock", + of_ti_am3_jtype_dpll_setup); + +static void __init of_ti_am3_no_gate_jtype_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .max_rate = 2000000000, + .flags = DPLL_J_TYPE, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_no_gate_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_am3_no_gate_jtype_dpll_clock, + "ti,am3-dpll-no-gate-j-type-clock", + of_ti_am3_no_gate_jtype_dpll_setup); + +static void __init of_ti_am3_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .max_rate = 1000000000, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_am3_dpll_clock, "ti,am3-dpll-clock", of_ti_am3_dpll_setup); + +static void __init of_ti_am3_core_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .idlest_mask = 0x1, + .enable_mask = 0x7, + .mult_mask = 0x7ff << 8, + .div1_mask = 0x7f, + .max_multiplier = 2047, + .max_divider = 128, + .min_divider = 1, + .max_rate = 1000000000, + .modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED), + }; + + of_ti_dpll_setup(node, &dpll_core_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_am3_core_dpll_clock, "ti,am3-dpll-core-clock", + of_ti_am3_core_dpll_setup); + +static void __init of_ti_omap2_core_dpll_setup(struct device_node *node) +{ + const struct dpll_data dd = { + .enable_mask = 0x3, + .mult_mask = 0x3ff << 12, + .div1_mask = 0xf << 8, + .max_divider = 16, + .min_divider = 1, + }; + + of_ti_dpll_setup(node, &omap2_dpll_core_ck_ops, &dd); +} +CLK_OF_DECLARE(ti_omap2_core_dpll_clock, "ti,omap2-dpll-core-clock", + of_ti_omap2_core_dpll_setup); diff --git a/drivers/clk/ti/dpll3xxx.c b/drivers/clk/ti/dpll3xxx.c new file mode 100644 index 000000000..4534de2ef --- /dev/null +++ b/drivers/clk/ti/dpll3xxx.c @@ -0,0 +1,907 @@ +/* + * OMAP3/4 - specific DPLL control functions + * + * Copyright (C) 2009-2010 Texas Instruments, Inc. + * Copyright (C) 2009-2010 Nokia Corporation + * + * Written by Paul Walmsley + * Testing and integration fixes by Jouni Högander + * + * 36xx support added by Vishwanath BS, Richard Woodruff, and Nishanth + * Menon + * + * Parts of this code are based on code written by + * Richard Woodruff, Tony Lindgren, Tuukka Tikkanen, Karthik Dasu + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/list.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/bitops.h> +#include <linux/clkdev.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +/* CM_AUTOIDLE_PLL*.AUTO_* bit values */ +#define DPLL_AUTOIDLE_DISABLE 0x0 +#define DPLL_AUTOIDLE_LOW_POWER_STOP 0x1 + +#define MAX_DPLL_WAIT_TRIES 1000000 + +#define OMAP3XXX_EN_DPLL_LOCKED 0x7 + +/* Forward declarations */ +static u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk); +static void omap3_dpll_deny_idle(struct clk_hw_omap *clk); +static void omap3_dpll_allow_idle(struct clk_hw_omap *clk); + +/* Private functions */ + +/* _omap3_dpll_write_clken - write clken_bits arg to a DPLL's enable bits */ +static void _omap3_dpll_write_clken(struct clk_hw_omap *clk, u8 clken_bits) +{ + const struct dpll_data *dd; + u32 v; + + dd = clk->dpll_data; + + v = ti_clk_ll_ops->clk_readl(&dd->control_reg); + v &= ~dd->enable_mask; + v |= clken_bits << __ffs(dd->enable_mask); + ti_clk_ll_ops->clk_writel(v, &dd->control_reg); +} + +/* _omap3_wait_dpll_status: wait for a DPLL to enter a specific state */ +static int _omap3_wait_dpll_status(struct clk_hw_omap *clk, u8 state) +{ + const struct dpll_data *dd; + int i = 0; + int ret = -EINVAL; + const char *clk_name; + + dd = clk->dpll_data; + clk_name = clk_hw_get_name(&clk->hw); + + state <<= __ffs(dd->idlest_mask); + + while (((ti_clk_ll_ops->clk_readl(&dd->idlest_reg) & dd->idlest_mask) + != state) && i < MAX_DPLL_WAIT_TRIES) { + i++; + udelay(1); + } + + if (i == MAX_DPLL_WAIT_TRIES) { + pr_err("clock: %s failed transition to '%s'\n", + clk_name, (state) ? "locked" : "bypassed"); + } else { + pr_debug("clock: %s transition to '%s' in %d loops\n", + clk_name, (state) ? "locked" : "bypassed", i); + + ret = 0; + } + + return ret; +} + +/* From 3430 TRM ES2 4.7.6.2 */ +static u16 _omap3_dpll_compute_freqsel(struct clk_hw_omap *clk, u8 n) +{ + unsigned long fint; + u16 f = 0; + + fint = clk_hw_get_rate(clk->dpll_data->clk_ref) / n; + + pr_debug("clock: fint is %lu\n", fint); + + if (fint >= 750000 && fint <= 1000000) + f = 0x3; + else if (fint > 1000000 && fint <= 1250000) + f = 0x4; + else if (fint > 1250000 && fint <= 1500000) + f = 0x5; + else if (fint > 1500000 && fint <= 1750000) + f = 0x6; + else if (fint > 1750000 && fint <= 2100000) + f = 0x7; + else if (fint > 7500000 && fint <= 10000000) + f = 0xB; + else if (fint > 10000000 && fint <= 12500000) + f = 0xC; + else if (fint > 12500000 && fint <= 15000000) + f = 0xD; + else if (fint > 15000000 && fint <= 17500000) + f = 0xE; + else if (fint > 17500000 && fint <= 21000000) + f = 0xF; + else + pr_debug("clock: unknown freqsel setting for %d\n", n); + + return f; +} + +/* + * _omap3_noncore_dpll_lock - instruct a DPLL to lock and wait for readiness + * @clk: pointer to a DPLL struct clk + * + * Instructs a non-CORE DPLL to lock. Waits for the DPLL to report + * readiness before returning. Will save and restore the DPLL's + * autoidle state across the enable, per the CDP code. If the DPLL + * locked successfully, return 0; if the DPLL did not lock in the time + * allotted, or DPLL3 was passed in, return -EINVAL. + */ +static int _omap3_noncore_dpll_lock(struct clk_hw_omap *clk) +{ + const struct dpll_data *dd; + u8 ai; + u8 state = 1; + int r = 0; + + pr_debug("clock: locking DPLL %s\n", clk_hw_get_name(&clk->hw)); + + dd = clk->dpll_data; + state <<= __ffs(dd->idlest_mask); + + /* Check if already locked */ + if ((ti_clk_ll_ops->clk_readl(&dd->idlest_reg) & dd->idlest_mask) == + state) + goto done; + + ai = omap3_dpll_autoidle_read(clk); + + if (ai) + omap3_dpll_deny_idle(clk); + + _omap3_dpll_write_clken(clk, DPLL_LOCKED); + + r = _omap3_wait_dpll_status(clk, 1); + + if (ai) + omap3_dpll_allow_idle(clk); + +done: + return r; +} + +/* + * _omap3_noncore_dpll_bypass - instruct a DPLL to bypass and wait for readiness + * @clk: pointer to a DPLL struct clk + * + * Instructs a non-CORE DPLL to enter low-power bypass mode. In + * bypass mode, the DPLL's rate is set equal to its parent clock's + * rate. Waits for the DPLL to report readiness before returning. + * Will save and restore the DPLL's autoidle state across the enable, + * per the CDP code. If the DPLL entered bypass mode successfully, + * return 0; if the DPLL did not enter bypass in the time allotted, or + * DPLL3 was passed in, or the DPLL does not support low-power bypass, + * return -EINVAL. + */ +static int _omap3_noncore_dpll_bypass(struct clk_hw_omap *clk) +{ + int r; + u8 ai; + + if (!(clk->dpll_data->modes & (1 << DPLL_LOW_POWER_BYPASS))) + return -EINVAL; + + pr_debug("clock: configuring DPLL %s for low-power bypass\n", + clk_hw_get_name(&clk->hw)); + + ai = omap3_dpll_autoidle_read(clk); + + _omap3_dpll_write_clken(clk, DPLL_LOW_POWER_BYPASS); + + r = _omap3_wait_dpll_status(clk, 0); + + if (ai) + omap3_dpll_allow_idle(clk); + + return r; +} + +/* + * _omap3_noncore_dpll_stop - instruct a DPLL to stop + * @clk: pointer to a DPLL struct clk + * + * Instructs a non-CORE DPLL to enter low-power stop. Will save and + * restore the DPLL's autoidle state across the stop, per the CDP + * code. If DPLL3 was passed in, or the DPLL does not support + * low-power stop, return -EINVAL; otherwise, return 0. + */ +static int _omap3_noncore_dpll_stop(struct clk_hw_omap *clk) +{ + u8 ai; + + if (!(clk->dpll_data->modes & (1 << DPLL_LOW_POWER_STOP))) + return -EINVAL; + + pr_debug("clock: stopping DPLL %s\n", clk_hw_get_name(&clk->hw)); + + ai = omap3_dpll_autoidle_read(clk); + + _omap3_dpll_write_clken(clk, DPLL_LOW_POWER_STOP); + + if (ai) + omap3_dpll_allow_idle(clk); + + return 0; +} + +/** + * _lookup_dco - Lookup DCO used by j-type DPLL + * @clk: pointer to a DPLL struct clk + * @dco: digital control oscillator selector + * @m: DPLL multiplier to set + * @n: DPLL divider to set + * + * See 36xx TRM section 3.5.3.3.3.2 "Type B DPLL (Low-Jitter)" + * + * XXX This code is not needed for 3430/AM35xx; can it be optimized + * out in non-multi-OMAP builds for those chips? + */ +static void _lookup_dco(struct clk_hw_omap *clk, u8 *dco, u16 m, u8 n) +{ + unsigned long fint, clkinp; /* watch out for overflow */ + + clkinp = clk_hw_get_rate(clk_hw_get_parent(&clk->hw)); + fint = (clkinp / n) * m; + + if (fint < 1000000000) + *dco = 2; + else + *dco = 4; +} + +/** + * _lookup_sddiv - Calculate sigma delta divider for j-type DPLL + * @clk: pointer to a DPLL struct clk + * @sd_div: target sigma-delta divider + * @m: DPLL multiplier to set + * @n: DPLL divider to set + * + * See 36xx TRM section 3.5.3.3.3.2 "Type B DPLL (Low-Jitter)" + * + * XXX This code is not needed for 3430/AM35xx; can it be optimized + * out in non-multi-OMAP builds for those chips? + */ +static void _lookup_sddiv(struct clk_hw_omap *clk, u8 *sd_div, u16 m, u8 n) +{ + unsigned long clkinp, sd; /* watch out for overflow */ + int mod1, mod2; + + clkinp = clk_hw_get_rate(clk_hw_get_parent(&clk->hw)); + + /* + * target sigma-delta to near 250MHz + * sd = ceil[(m/(n+1)) * (clkinp_MHz / 250)] + */ + clkinp /= 100000; /* shift from MHz to 10*Hz for 38.4 and 19.2 */ + mod1 = (clkinp * m) % (250 * n); + sd = (clkinp * m) / (250 * n); + mod2 = sd % 10; + sd /= 10; + + if (mod1 || mod2) + sd++; + *sd_div = sd; +} + +/* + * _omap3_noncore_dpll_program - set non-core DPLL M,N values directly + * @clk: struct clk * of DPLL to set + * @freqsel: FREQSEL value to set + * + * Program the DPLL with the last M, N values calculated, and wait for + * the DPLL to lock. Returns -EINVAL upon error, or 0 upon success. + */ +static int omap3_noncore_dpll_program(struct clk_hw_omap *clk, u16 freqsel) +{ + struct dpll_data *dd = clk->dpll_data; + u8 dco, sd_div, ai = 0; + u32 v; + bool errata_i810; + + /* 3430 ES2 TRM: 4.7.6.9 DPLL Programming Sequence */ + _omap3_noncore_dpll_bypass(clk); + + /* + * Set jitter correction. Jitter correction applicable for OMAP343X + * only since freqsel field is no longer present on other devices. + */ + if (ti_clk_get_features()->flags & TI_CLK_DPLL_HAS_FREQSEL) { + v = ti_clk_ll_ops->clk_readl(&dd->control_reg); + v &= ~dd->freqsel_mask; + v |= freqsel << __ffs(dd->freqsel_mask); + ti_clk_ll_ops->clk_writel(v, &dd->control_reg); + } + + /* Set DPLL multiplier, divider */ + v = ti_clk_ll_ops->clk_readl(&dd->mult_div1_reg); + + /* Handle Duty Cycle Correction */ + if (dd->dcc_mask) { + if (dd->last_rounded_rate >= dd->dcc_rate) + v |= dd->dcc_mask; /* Enable DCC */ + else + v &= ~dd->dcc_mask; /* Disable DCC */ + } + + v &= ~(dd->mult_mask | dd->div1_mask); + v |= dd->last_rounded_m << __ffs(dd->mult_mask); + v |= (dd->last_rounded_n - 1) << __ffs(dd->div1_mask); + + /* Configure dco and sd_div for dplls that have these fields */ + if (dd->dco_mask) { + _lookup_dco(clk, &dco, dd->last_rounded_m, dd->last_rounded_n); + v &= ~(dd->dco_mask); + v |= dco << __ffs(dd->dco_mask); + } + if (dd->sddiv_mask) { + _lookup_sddiv(clk, &sd_div, dd->last_rounded_m, + dd->last_rounded_n); + v &= ~(dd->sddiv_mask); + v |= sd_div << __ffs(dd->sddiv_mask); + } + + /* + * Errata i810 - DPLL controller can get stuck while transitioning + * to a power saving state. Software must ensure the DPLL can not + * transition to a low power state while changing M/N values. + * Easiest way to accomplish this is to prevent DPLL autoidle + * before doing the M/N re-program. + */ + errata_i810 = ti_clk_get_features()->flags & TI_CLK_ERRATA_I810; + + if (errata_i810) { + ai = omap3_dpll_autoidle_read(clk); + if (ai) { + omap3_dpll_deny_idle(clk); + + /* OCP barrier */ + omap3_dpll_autoidle_read(clk); + } + } + + ti_clk_ll_ops->clk_writel(v, &dd->mult_div1_reg); + + /* Set 4X multiplier and low-power mode */ + if (dd->m4xen_mask || dd->lpmode_mask) { + v = ti_clk_ll_ops->clk_readl(&dd->control_reg); + + if (dd->m4xen_mask) { + if (dd->last_rounded_m4xen) + v |= dd->m4xen_mask; + else + v &= ~dd->m4xen_mask; + } + + if (dd->lpmode_mask) { + if (dd->last_rounded_lpmode) + v |= dd->lpmode_mask; + else + v &= ~dd->lpmode_mask; + } + + ti_clk_ll_ops->clk_writel(v, &dd->control_reg); + } + + /* We let the clock framework set the other output dividers later */ + + /* REVISIT: Set ramp-up delay? */ + + _omap3_noncore_dpll_lock(clk); + + if (errata_i810 && ai) + omap3_dpll_allow_idle(clk); + + return 0; +} + +/* Public functions */ + +/** + * omap3_dpll_recalc - recalculate DPLL rate + * @clk: DPLL struct clk + * + * Recalculate and propagate the DPLL rate. + */ +unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + + return omap2_get_dpll_rate(clk); +} + +/* Non-CORE DPLL (e.g., DPLLs that do not control SDRC) clock functions */ + +/** + * omap3_noncore_dpll_enable - instruct a DPLL to enter bypass or lock mode + * @clk: pointer to a DPLL struct clk + * + * Instructs a non-CORE DPLL to enable, e.g., to enter bypass or lock. + * The choice of modes depends on the DPLL's programmed rate: if it is + * the same as the DPLL's parent clock, it will enter bypass; + * otherwise, it will enter lock. This code will wait for the DPLL to + * indicate readiness before returning, unless the DPLL takes too long + * to enter the target state. Intended to be used as the struct clk's + * enable function. If DPLL3 was passed in, or the DPLL does not + * support low-power stop, or if the DPLL took too long to enter + * bypass or lock, return -EINVAL; otherwise, return 0. + */ +int omap3_noncore_dpll_enable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + int r; + struct dpll_data *dd; + struct clk_hw *parent; + + dd = clk->dpll_data; + if (!dd) + return -EINVAL; + + if (clk->clkdm) { + r = ti_clk_ll_ops->clkdm_clk_enable(clk->clkdm, hw->clk); + if (r) { + WARN(1, + "%s: could not enable %s's clockdomain %s: %d\n", + __func__, clk_hw_get_name(hw), + clk->clkdm_name, r); + return r; + } + } + + parent = clk_hw_get_parent(hw); + + if (clk_hw_get_rate(hw) == clk_hw_get_rate(dd->clk_bypass)) { + WARN_ON(parent != dd->clk_bypass); + r = _omap3_noncore_dpll_bypass(clk); + } else { + WARN_ON(parent != dd->clk_ref); + r = _omap3_noncore_dpll_lock(clk); + } + + return r; +} + +/** + * omap3_noncore_dpll_disable - instruct a DPLL to enter low-power stop + * @clk: pointer to a DPLL struct clk + * + * Instructs a non-CORE DPLL to enter low-power stop. This function is + * intended for use in struct clkops. No return value. + */ +void omap3_noncore_dpll_disable(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + + _omap3_noncore_dpll_stop(clk); + if (clk->clkdm) + ti_clk_ll_ops->clkdm_clk_disable(clk->clkdm, hw->clk); +} + +/* Non-CORE DPLL rate set code */ + +/** + * omap3_noncore_dpll_determine_rate - determine rate for a DPLL + * @hw: pointer to the clock to determine rate for + * @req: target rate request + * + * Determines which DPLL mode to use for reaching a desired target rate. + * Checks whether the DPLL shall be in bypass or locked mode, and if + * locked, calculates the M,N values for the DPLL via round-rate. + * Returns a 0 on success, negative error value in failure. + */ +int omap3_noncore_dpll_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *dd; + + if (!req->rate) + return -EINVAL; + + dd = clk->dpll_data; + if (!dd) + return -EINVAL; + + if (clk_hw_get_rate(dd->clk_bypass) == req->rate && + (dd->modes & (1 << DPLL_LOW_POWER_BYPASS))) { + req->best_parent_hw = dd->clk_bypass; + } else { + req->rate = omap2_dpll_round_rate(hw, req->rate, + &req->best_parent_rate); + req->best_parent_hw = dd->clk_ref; + } + + req->best_parent_rate = req->rate; + + return 0; +} + +/** + * omap3_noncore_dpll_set_parent - set parent for a DPLL clock + * @hw: pointer to the clock to set parent for + * @index: parent index to select + * + * Sets parent for a DPLL clock. This sets the DPLL into bypass or + * locked mode. Returns 0 with success, negative error value otherwise. + */ +int omap3_noncore_dpll_set_parent(struct clk_hw *hw, u8 index) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + int ret; + + if (!hw) + return -EINVAL; + + if (index) + ret = _omap3_noncore_dpll_bypass(clk); + else + ret = _omap3_noncore_dpll_lock(clk); + + return ret; +} + +/** + * omap3_noncore_dpll_set_rate - set rate for a DPLL clock + * @hw: pointer to the clock to set parent for + * @rate: target rate for the clock + * @parent_rate: rate of the parent clock + * + * Sets rate for a DPLL clock. First checks if the clock parent is + * reference clock (in bypass mode, the rate of the clock can't be + * changed) and proceeds with the rate change operation. Returns 0 + * with success, negative error value otherwise. + */ +int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *dd; + u16 freqsel = 0; + int ret; + + if (!hw || !rate) + return -EINVAL; + + dd = clk->dpll_data; + if (!dd) + return -EINVAL; + + if (clk_hw_get_parent(hw) != dd->clk_ref) + return -EINVAL; + + if (dd->last_rounded_rate == 0) + return -EINVAL; + + /* Freqsel is available only on OMAP343X devices */ + if (ti_clk_get_features()->flags & TI_CLK_DPLL_HAS_FREQSEL) { + freqsel = _omap3_dpll_compute_freqsel(clk, dd->last_rounded_n); + WARN_ON(!freqsel); + } + + pr_debug("%s: %s: set rate: locking rate to %lu.\n", __func__, + clk_hw_get_name(hw), rate); + + ret = omap3_noncore_dpll_program(clk, freqsel); + + return ret; +} + +/** + * omap3_noncore_dpll_set_rate_and_parent - set rate and parent for a DPLL clock + * @hw: pointer to the clock to set rate and parent for + * @rate: target rate for the DPLL + * @parent_rate: clock rate of the DPLL parent + * @index: new parent index for the DPLL, 0 - reference, 1 - bypass + * + * Sets rate and parent for a DPLL clock. If new parent is the bypass + * clock, only selects the parent. Otherwise proceeds with a rate + * change, as this will effectively also change the parent as the + * DPLL is put into locked mode. Returns 0 with success, negative error + * value otherwise. + */ +int omap3_noncore_dpll_set_rate_and_parent(struct clk_hw *hw, + unsigned long rate, + unsigned long parent_rate, + u8 index) +{ + int ret; + + if (!hw || !rate) + return -EINVAL; + + /* + * clk-ref at index[0], in which case we only need to set rate, + * the parent will be changed automatically with the lock sequence. + * With clk-bypass case we only need to change parent. + */ + if (index) + ret = omap3_noncore_dpll_set_parent(hw, index); + else + ret = omap3_noncore_dpll_set_rate(hw, rate, parent_rate); + + return ret; +} + +/* DPLL autoidle read/set code */ + +/** + * omap3_dpll_autoidle_read - read a DPLL's autoidle bits + * @clk: struct clk * of the DPLL to read + * + * Return the DPLL's autoidle bits, shifted down to bit 0. Returns + * -EINVAL if passed a null pointer or if the struct clk does not + * appear to refer to a DPLL. + */ +static u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk) +{ + const struct dpll_data *dd; + u32 v; + + if (!clk || !clk->dpll_data) + return -EINVAL; + + dd = clk->dpll_data; + + if (!dd->autoidle_mask) + return -EINVAL; + + v = ti_clk_ll_ops->clk_readl(&dd->autoidle_reg); + v &= dd->autoidle_mask; + v >>= __ffs(dd->autoidle_mask); + + return v; +} + +/** + * omap3_dpll_allow_idle - enable DPLL autoidle bits + * @clk: struct clk * of the DPLL to operate on + * + * Enable DPLL automatic idle control. This automatic idle mode + * switching takes effect only when the DPLL is locked, at least on + * OMAP3430. The DPLL will enter low-power stop when its downstream + * clocks are gated. No return value. + */ +static void omap3_dpll_allow_idle(struct clk_hw_omap *clk) +{ + const struct dpll_data *dd; + u32 v; + + if (!clk || !clk->dpll_data) + return; + + dd = clk->dpll_data; + + if (!dd->autoidle_mask) + return; + + /* + * REVISIT: CORE DPLL can optionally enter low-power bypass + * by writing 0x5 instead of 0x1. Add some mechanism to + * optionally enter this mode. + */ + v = ti_clk_ll_ops->clk_readl(&dd->autoidle_reg); + v &= ~dd->autoidle_mask; + v |= DPLL_AUTOIDLE_LOW_POWER_STOP << __ffs(dd->autoidle_mask); + ti_clk_ll_ops->clk_writel(v, &dd->autoidle_reg); +} + +/** + * omap3_dpll_deny_idle - prevent DPLL from automatically idling + * @clk: struct clk * of the DPLL to operate on + * + * Disable DPLL automatic idle control. No return value. + */ +static void omap3_dpll_deny_idle(struct clk_hw_omap *clk) +{ + const struct dpll_data *dd; + u32 v; + + if (!clk || !clk->dpll_data) + return; + + dd = clk->dpll_data; + + if (!dd->autoidle_mask) + return; + + v = ti_clk_ll_ops->clk_readl(&dd->autoidle_reg); + v &= ~dd->autoidle_mask; + v |= DPLL_AUTOIDLE_DISABLE << __ffs(dd->autoidle_mask); + ti_clk_ll_ops->clk_writel(v, &dd->autoidle_reg); +} + +/* Clock control for DPLL outputs */ + +/* Find the parent DPLL for the given clkoutx2 clock */ +static struct clk_hw_omap *omap3_find_clkoutx2_dpll(struct clk_hw *hw) +{ + struct clk_hw_omap *pclk = NULL; + + /* Walk up the parents of clk, looking for a DPLL */ + do { + do { + hw = clk_hw_get_parent(hw); + } while (hw && (clk_hw_get_flags(hw) & CLK_IS_BASIC)); + if (!hw) + break; + pclk = to_clk_hw_omap(hw); + } while (pclk && !pclk->dpll_data); + + /* clk does not have a DPLL as a parent? error in the clock data */ + if (!pclk) { + WARN_ON(1); + return NULL; + } + + return pclk; +} + +/** + * omap3_clkoutx2_recalc - recalculate DPLL X2 output virtual clock rate + * @clk: DPLL output struct clk + * + * Using parent clock DPLL data, look up DPLL state. If locked, set our + * rate to the dpll_clk * 2; otherwise, just use dpll_clk. + */ +unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw, + unsigned long parent_rate) +{ + const struct dpll_data *dd; + unsigned long rate; + u32 v; + struct clk_hw_omap *pclk = NULL; + + if (!parent_rate) + return 0; + + pclk = omap3_find_clkoutx2_dpll(hw); + + if (!pclk) + return 0; + + dd = pclk->dpll_data; + + WARN_ON(!dd->enable_mask); + + v = ti_clk_ll_ops->clk_readl(&dd->control_reg) & dd->enable_mask; + v >>= __ffs(dd->enable_mask); + if ((v != OMAP3XXX_EN_DPLL_LOCKED) || (dd->flags & DPLL_J_TYPE)) + rate = parent_rate; + else + rate = parent_rate * 2; + return rate; +} + +/* OMAP3/4 non-CORE DPLL clkops */ +const struct clk_hw_omap_ops clkhwops_omap3_dpll = { + .allow_idle = omap3_dpll_allow_idle, + .deny_idle = omap3_dpll_deny_idle, +}; + +/** + * omap3_dpll4_set_rate - set rate for omap3 per-dpll + * @hw: clock to change + * @rate: target rate for clock + * @parent_rate: rate of the parent clock + * + * Check if the current SoC supports the per-dpll reprogram operation + * or not, and then do the rate change if supported. Returns -EINVAL + * if not supported, 0 for success, and potential error codes from the + * clock rate change. + */ +int omap3_dpll4_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + /* + * According to the 12-5 CDP code from TI, "Limitation 2.5" + * on 3430ES1 prevents us from changing DPLL multipliers or dividers + * on DPLL4. + */ + if (ti_clk_get_features()->flags & TI_CLK_DPLL4_DENY_REPROGRAM) { + pr_err("clock: DPLL4 cannot change rate due to silicon 'Limitation 2.5' on 3430ES1.\n"); + return -EINVAL; + } + + return omap3_noncore_dpll_set_rate(hw, rate, parent_rate); +} + +/** + * omap3_dpll4_set_rate_and_parent - set rate and parent for omap3 per-dpll + * @hw: clock to change + * @rate: target rate for clock + * @parent_rate: rate of the parent clock + * @index: parent index, 0 - reference clock, 1 - bypass clock + * + * Check if the current SoC support the per-dpll reprogram operation + * or not, and then do the rate + parent change if supported. Returns + * -EINVAL if not supported, 0 for success, and potential error codes + * from the clock rate change. + */ +int omap3_dpll4_set_rate_and_parent(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate, u8 index) +{ + if (ti_clk_get_features()->flags & TI_CLK_DPLL4_DENY_REPROGRAM) { + pr_err("clock: DPLL4 cannot change rate due to silicon 'Limitation 2.5' on 3430ES1.\n"); + return -EINVAL; + } + + return omap3_noncore_dpll_set_rate_and_parent(hw, rate, parent_rate, + index); +} + +/* Apply DM3730 errata sprz319 advisory 2.1. */ +static bool omap3_dpll5_apply_errata(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct omap3_dpll5_settings { + unsigned int rate, m, n; + }; + + static const struct omap3_dpll5_settings precomputed[] = { + /* + * From DM3730 errata advisory 2.1, table 35 and 36. + * The N value is increased by 1 compared to the tables as the + * errata lists register values while last_rounded_field is the + * real divider value. + */ + { 12000000, 80, 0 + 1 }, + { 13000000, 443, 5 + 1 }, + { 19200000, 50, 0 + 1 }, + { 26000000, 443, 11 + 1 }, + { 38400000, 25, 0 + 1 } + }; + + const struct omap3_dpll5_settings *d; + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *dd; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(precomputed); ++i) { + if (parent_rate == precomputed[i].rate) + break; + } + + if (i == ARRAY_SIZE(precomputed)) + return false; + + d = &precomputed[i]; + + /* Update the M, N and rounded rate values and program the DPLL. */ + dd = clk->dpll_data; + dd->last_rounded_m = d->m; + dd->last_rounded_n = d->n; + dd->last_rounded_rate = div_u64((u64)parent_rate * d->m, d->n); + omap3_noncore_dpll_program(clk, 0); + + return true; +} + +/** + * omap3_dpll5_set_rate - set rate for omap3 dpll5 + * @hw: clock to change + * @rate: target rate for clock + * @parent_rate: rate of the parent clock + * + * Set rate for the DPLL5 clock. Apply the sprz319 advisory 2.1 on OMAP36xx if + * the DPLL is used for USB host (detected through the requested rate). + */ +int omap3_dpll5_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + if (rate == OMAP3_DPLL5_FREQ_FOR_USBHOST * 8) { + if (omap3_dpll5_apply_errata(hw, parent_rate)) + return 0; + } + + return omap3_noncore_dpll_set_rate(hw, rate, parent_rate); +} diff --git a/drivers/clk/ti/dpll44xx.c b/drivers/clk/ti/dpll44xx.c new file mode 100644 index 000000000..d7a3f7ec8 --- /dev/null +++ b/drivers/clk/ti/dpll44xx.c @@ -0,0 +1,227 @@ +/* + * OMAP4-specific DPLL control functions + * + * Copyright (C) 2011 Texas Instruments, Inc. + * Rajendra Nayak + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/bitops.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +/* + * Maximum DPLL input frequency (FINT) and output frequency (FOUT) that + * can supported when using the DPLL low-power mode. Frequencies are + * defined in OMAP4430/60 Public TRM section 3.6.3.3.2 "Enable Control, + * Status, and Low-Power Operation Mode". + */ +#define OMAP4_DPLL_LP_FINT_MAX 1000000 +#define OMAP4_DPLL_LP_FOUT_MAX 100000000 + +/* + * Bitfield declarations + */ +#define OMAP4430_DPLL_CLKOUT_GATE_CTRL_MASK BIT(8) +#define OMAP4430_DPLL_CLKOUTX2_GATE_CTRL_MASK BIT(10) +#define OMAP4430_DPLL_REGM4XEN_MASK BIT(11) + +/* Static rate multiplier for OMAP4 REGM4XEN clocks */ +#define OMAP4430_REGM4XEN_MULT 4 + +static void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk) +{ + u32 v; + u32 mask; + + if (!clk) + return; + + mask = clk->flags & CLOCK_CLKOUTX2 ? + OMAP4430_DPLL_CLKOUTX2_GATE_CTRL_MASK : + OMAP4430_DPLL_CLKOUT_GATE_CTRL_MASK; + + v = ti_clk_ll_ops->clk_readl(&clk->clksel_reg); + /* Clear the bit to allow gatectrl */ + v &= ~mask; + ti_clk_ll_ops->clk_writel(v, &clk->clksel_reg); +} + +static void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk) +{ + u32 v; + u32 mask; + + if (!clk) + return; + + mask = clk->flags & CLOCK_CLKOUTX2 ? + OMAP4430_DPLL_CLKOUTX2_GATE_CTRL_MASK : + OMAP4430_DPLL_CLKOUT_GATE_CTRL_MASK; + + v = ti_clk_ll_ops->clk_readl(&clk->clksel_reg); + /* Set the bit to deny gatectrl */ + v |= mask; + ti_clk_ll_ops->clk_writel(v, &clk->clksel_reg); +} + +const struct clk_hw_omap_ops clkhwops_omap4_dpllmx = { + .allow_idle = omap4_dpllmx_allow_gatectrl, + .deny_idle = omap4_dpllmx_deny_gatectrl, +}; + +/** + * omap4_dpll_lpmode_recalc - compute DPLL low-power setting + * @dd: pointer to the dpll data structure + * + * Calculates if low-power mode can be enabled based upon the last + * multiplier and divider values calculated. If low-power mode can be + * enabled, then the bit to enable low-power mode is stored in the + * last_rounded_lpmode variable. This implementation is based upon the + * criteria for enabling low-power mode as described in the OMAP4430/60 + * Public TRM section 3.6.3.3.2 "Enable Control, Status, and Low-Power + * Operation Mode". + */ +static void omap4_dpll_lpmode_recalc(struct dpll_data *dd) +{ + long fint, fout; + + fint = clk_hw_get_rate(dd->clk_ref) / (dd->last_rounded_n + 1); + fout = fint * dd->last_rounded_m; + + if ((fint < OMAP4_DPLL_LP_FINT_MAX) && (fout < OMAP4_DPLL_LP_FOUT_MAX)) + dd->last_rounded_lpmode = 1; + else + dd->last_rounded_lpmode = 0; +} + +/** + * omap4_dpll_regm4xen_recalc - compute DPLL rate, considering REGM4XEN bit + * @clk: struct clk * of the DPLL to compute the rate for + * + * Compute the output rate for the OMAP4 DPLL represented by @clk. + * Takes the REGM4XEN bit into consideration, which is needed for the + * OMAP4 ABE DPLL. Returns the DPLL's output rate (before M-dividers) + * upon success, or 0 upon error. + */ +unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + u32 v; + unsigned long rate; + struct dpll_data *dd; + + if (!clk || !clk->dpll_data) + return 0; + + dd = clk->dpll_data; + + rate = omap2_get_dpll_rate(clk); + + /* regm4xen adds a multiplier of 4 to DPLL calculations */ + v = ti_clk_ll_ops->clk_readl(&dd->control_reg); + if (v & OMAP4430_DPLL_REGM4XEN_MASK) + rate *= OMAP4430_REGM4XEN_MULT; + + return rate; +} + +/** + * omap4_dpll_regm4xen_round_rate - round DPLL rate, considering REGM4XEN bit + * @clk: struct clk * of the DPLL to round a rate for + * @target_rate: the desired rate of the DPLL + * + * Compute the rate that would be programmed into the DPLL hardware + * for @clk if set_rate() were to be provided with the rate + * @target_rate. Takes the REGM4XEN bit into consideration, which is + * needed for the OMAP4 ABE DPLL. Returns the rounded rate (before + * M-dividers) upon success, -EINVAL if @clk is null or not a DPLL, or + * ~0 if an error occurred in omap2_dpll_round_rate(). + */ +long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw, + unsigned long target_rate, + unsigned long *parent_rate) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *dd; + long r; + + if (!clk || !clk->dpll_data) + return -EINVAL; + + dd = clk->dpll_data; + + dd->last_rounded_m4xen = 0; + + /* + * First try to compute the DPLL configuration for + * target rate without using the 4X multiplier. + */ + r = omap2_dpll_round_rate(hw, target_rate, NULL); + if (r != ~0) + goto out; + + /* + * If we did not find a valid DPLL configuration, try again, but + * this time see if using the 4X multiplier can help. Enabling the + * 4X multiplier is equivalent to dividing the target rate by 4. + */ + r = omap2_dpll_round_rate(hw, target_rate / OMAP4430_REGM4XEN_MULT, + NULL); + if (r == ~0) + return r; + + dd->last_rounded_rate *= OMAP4430_REGM4XEN_MULT; + dd->last_rounded_m4xen = 1; + +out: + omap4_dpll_lpmode_recalc(dd); + + return dd->last_rounded_rate; +} + +/** + * omap4_dpll_regm4xen_determine_rate - determine rate for a DPLL + * @hw: pointer to the clock to determine rate for + * @req: target rate request + * + * Determines which DPLL mode to use for reaching a desired rate. + * Checks whether the DPLL shall be in bypass or locked mode, and if + * locked, calculates the M,N values for the DPLL via round-rate. + * Returns 0 on success and a negative error value otherwise. + */ +int omap4_dpll_regm4xen_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + struct dpll_data *dd; + + if (!req->rate) + return -EINVAL; + + dd = clk->dpll_data; + if (!dd) + return -EINVAL; + + if (clk_hw_get_rate(dd->clk_bypass) == req->rate && + (dd->modes & (1 << DPLL_LOW_POWER_BYPASS))) { + req->best_parent_hw = dd->clk_bypass; + } else { + req->rate = omap4_dpll_regm4xen_round_rate(hw, req->rate, + &req->best_parent_rate); + req->best_parent_hw = dd->clk_ref; + } + + req->best_parent_rate = req->rate; + + return 0; +} diff --git a/drivers/clk/ti/fapll.c b/drivers/clk/ti/fapll.c new file mode 100644 index 000000000..e33ce8518 --- /dev/null +++ b/drivers/clk/ti/fapll.c @@ -0,0 +1,671 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/math64.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> + +/* FAPLL Control Register PLL_CTRL */ +#define FAPLL_MAIN_MULT_N_SHIFT 16 +#define FAPLL_MAIN_DIV_P_SHIFT 8 +#define FAPLL_MAIN_LOCK BIT(7) +#define FAPLL_MAIN_PLLEN BIT(3) +#define FAPLL_MAIN_BP BIT(2) +#define FAPLL_MAIN_LOC_CTL BIT(0) + +#define FAPLL_MAIN_MAX_MULT_N 0xffff +#define FAPLL_MAIN_MAX_DIV_P 0xff +#define FAPLL_MAIN_CLEAR_MASK \ + ((FAPLL_MAIN_MAX_MULT_N << FAPLL_MAIN_MULT_N_SHIFT) | \ + (FAPLL_MAIN_DIV_P_SHIFT << FAPLL_MAIN_DIV_P_SHIFT) | \ + FAPLL_MAIN_LOC_CTL) + +/* FAPLL powerdown register PWD */ +#define FAPLL_PWD_OFFSET 4 + +#define MAX_FAPLL_OUTPUTS 7 +#define FAPLL_MAX_RETRIES 1000 + +#define to_fapll(_hw) container_of(_hw, struct fapll_data, hw) +#define to_synth(_hw) container_of(_hw, struct fapll_synth, hw) + +/* The bypass bit is inverted on the ddr_pll.. */ +#define fapll_is_ddr_pll(va) (((u32)(va) & 0xffff) == 0x0440) + +/* + * The audio_pll_clk1 input is hard wired to the 27MHz bypass clock, + * and the audio_pll_clk1 synthesizer is hardwared to 32KiHz output. + */ +#define is_ddr_pll_clk1(va) (((u32)(va) & 0xffff) == 0x044c) +#define is_audio_pll_clk1(va) (((u32)(va) & 0xffff) == 0x04a8) + +/* Synthesizer divider register */ +#define SYNTH_LDMDIV1 BIT(8) + +/* Synthesizer frequency register */ +#define SYNTH_LDFREQ BIT(31) + +#define SYNTH_PHASE_K 8 +#define SYNTH_MAX_INT_DIV 0xf +#define SYNTH_MAX_DIV_M 0xff + +struct fapll_data { + struct clk_hw hw; + void __iomem *base; + const char *name; + struct clk *clk_ref; + struct clk *clk_bypass; + struct clk_onecell_data outputs; + bool bypass_bit_inverted; +}; + +struct fapll_synth { + struct clk_hw hw; + struct fapll_data *fd; + int index; + void __iomem *freq; + void __iomem *div; + const char *name; + struct clk *clk_pll; +}; + +static bool ti_fapll_clock_is_bypass(struct fapll_data *fd) +{ + u32 v = readl_relaxed(fd->base); + + if (fd->bypass_bit_inverted) + return !(v & FAPLL_MAIN_BP); + else + return !!(v & FAPLL_MAIN_BP); +} + +static void ti_fapll_set_bypass(struct fapll_data *fd) +{ + u32 v = readl_relaxed(fd->base); + + if (fd->bypass_bit_inverted) + v &= ~FAPLL_MAIN_BP; + else + v |= FAPLL_MAIN_BP; + writel_relaxed(v, fd->base); +} + +static void ti_fapll_clear_bypass(struct fapll_data *fd) +{ + u32 v = readl_relaxed(fd->base); + + if (fd->bypass_bit_inverted) + v |= FAPLL_MAIN_BP; + else + v &= ~FAPLL_MAIN_BP; + writel_relaxed(v, fd->base); +} + +static int ti_fapll_wait_lock(struct fapll_data *fd) +{ + int retries = FAPLL_MAX_RETRIES; + u32 v; + + while ((v = readl_relaxed(fd->base))) { + if (v & FAPLL_MAIN_LOCK) + return 0; + + if (retries-- <= 0) + break; + + udelay(1); + } + + pr_err("%s failed to lock\n", fd->name); + + return -ETIMEDOUT; +} + +static int ti_fapll_enable(struct clk_hw *hw) +{ + struct fapll_data *fd = to_fapll(hw); + u32 v = readl_relaxed(fd->base); + + v |= FAPLL_MAIN_PLLEN; + writel_relaxed(v, fd->base); + ti_fapll_wait_lock(fd); + + return 0; +} + +static void ti_fapll_disable(struct clk_hw *hw) +{ + struct fapll_data *fd = to_fapll(hw); + u32 v = readl_relaxed(fd->base); + + v &= ~FAPLL_MAIN_PLLEN; + writel_relaxed(v, fd->base); +} + +static int ti_fapll_is_enabled(struct clk_hw *hw) +{ + struct fapll_data *fd = to_fapll(hw); + u32 v = readl_relaxed(fd->base); + + return v & FAPLL_MAIN_PLLEN; +} + +static unsigned long ti_fapll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct fapll_data *fd = to_fapll(hw); + u32 fapll_n, fapll_p, v; + u64 rate; + + if (ti_fapll_clock_is_bypass(fd)) + return parent_rate; + + rate = parent_rate; + + /* PLL pre-divider is P and multiplier is N */ + v = readl_relaxed(fd->base); + fapll_p = (v >> 8) & 0xff; + if (fapll_p) + do_div(rate, fapll_p); + fapll_n = v >> 16; + if (fapll_n) + rate *= fapll_n; + + return rate; +} + +static u8 ti_fapll_get_parent(struct clk_hw *hw) +{ + struct fapll_data *fd = to_fapll(hw); + + if (ti_fapll_clock_is_bypass(fd)) + return 1; + + return 0; +} + +static int ti_fapll_set_div_mult(unsigned long rate, + unsigned long parent_rate, + u32 *pre_div_p, u32 *mult_n) +{ + /* + * So far no luck getting decent clock with PLL divider, + * PLL does not seem to lock and the signal does not look + * right. It seems the divider can only be used together + * with the multiplier? + */ + if (rate < parent_rate) { + pr_warn("FAPLL main divider rates unsupported\n"); + return -EINVAL; + } + + *mult_n = rate / parent_rate; + if (*mult_n > FAPLL_MAIN_MAX_MULT_N) + return -EINVAL; + *pre_div_p = 1; + + return 0; +} + +static long ti_fapll_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + u32 pre_div_p, mult_n; + int error; + + if (!rate) + return -EINVAL; + + error = ti_fapll_set_div_mult(rate, *parent_rate, + &pre_div_p, &mult_n); + if (error) + return error; + + rate = *parent_rate / pre_div_p; + rate *= mult_n; + + return rate; +} + +static int ti_fapll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct fapll_data *fd = to_fapll(hw); + u32 pre_div_p, mult_n, v; + int error; + + if (!rate) + return -EINVAL; + + error = ti_fapll_set_div_mult(rate, parent_rate, + &pre_div_p, &mult_n); + if (error) + return error; + + ti_fapll_set_bypass(fd); + v = readl_relaxed(fd->base); + v &= ~FAPLL_MAIN_CLEAR_MASK; + v |= pre_div_p << FAPLL_MAIN_DIV_P_SHIFT; + v |= mult_n << FAPLL_MAIN_MULT_N_SHIFT; + writel_relaxed(v, fd->base); + if (ti_fapll_is_enabled(hw)) + ti_fapll_wait_lock(fd); + ti_fapll_clear_bypass(fd); + + return 0; +} + +static const struct clk_ops ti_fapll_ops = { + .enable = ti_fapll_enable, + .disable = ti_fapll_disable, + .is_enabled = ti_fapll_is_enabled, + .recalc_rate = ti_fapll_recalc_rate, + .get_parent = ti_fapll_get_parent, + .round_rate = ti_fapll_round_rate, + .set_rate = ti_fapll_set_rate, +}; + +static int ti_fapll_synth_enable(struct clk_hw *hw) +{ + struct fapll_synth *synth = to_synth(hw); + u32 v = readl_relaxed(synth->fd->base + FAPLL_PWD_OFFSET); + + v &= ~(1 << synth->index); + writel_relaxed(v, synth->fd->base + FAPLL_PWD_OFFSET); + + return 0; +} + +static void ti_fapll_synth_disable(struct clk_hw *hw) +{ + struct fapll_synth *synth = to_synth(hw); + u32 v = readl_relaxed(synth->fd->base + FAPLL_PWD_OFFSET); + + v |= 1 << synth->index; + writel_relaxed(v, synth->fd->base + FAPLL_PWD_OFFSET); +} + +static int ti_fapll_synth_is_enabled(struct clk_hw *hw) +{ + struct fapll_synth *synth = to_synth(hw); + u32 v = readl_relaxed(synth->fd->base + FAPLL_PWD_OFFSET); + + return !(v & (1 << synth->index)); +} + +/* + * See dm816x TRM chapter 1.10.3 Flying Adder PLL fore more info + */ +static unsigned long ti_fapll_synth_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct fapll_synth *synth = to_synth(hw); + u32 synth_div_m; + u64 rate; + + /* The audio_pll_clk1 is hardwired to produce 32.768KiHz clock */ + if (!synth->div) + return 32768; + + /* + * PLL in bypass sets the synths in bypass mode too. The PLL rate + * can be also be set to 27MHz, so we can't use parent_rate to + * check for bypass mode. + */ + if (ti_fapll_clock_is_bypass(synth->fd)) + return parent_rate; + + rate = parent_rate; + + /* + * Synth frequency integer and fractional divider. + * Note that the phase output K is 8, so the result needs + * to be multiplied by SYNTH_PHASE_K. + */ + if (synth->freq) { + u32 v, synth_int_div, synth_frac_div, synth_div_freq; + + v = readl_relaxed(synth->freq); + synth_int_div = (v >> 24) & 0xf; + synth_frac_div = v & 0xffffff; + synth_div_freq = (synth_int_div * 10000000) + synth_frac_div; + rate *= 10000000; + do_div(rate, synth_div_freq); + rate *= SYNTH_PHASE_K; + } + + /* Synth post-divider M */ + synth_div_m = readl_relaxed(synth->div) & SYNTH_MAX_DIV_M; + + return DIV_ROUND_UP_ULL(rate, synth_div_m); +} + +static unsigned long ti_fapll_synth_get_frac_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct fapll_synth *synth = to_synth(hw); + unsigned long current_rate, frac_rate; + u32 post_div_m; + + current_rate = ti_fapll_synth_recalc_rate(hw, parent_rate); + post_div_m = readl_relaxed(synth->div) & SYNTH_MAX_DIV_M; + frac_rate = current_rate * post_div_m; + + return frac_rate; +} + +static u32 ti_fapll_synth_set_frac_rate(struct fapll_synth *synth, + unsigned long rate, + unsigned long parent_rate) +{ + u32 post_div_m, synth_int_div = 0, synth_frac_div = 0, v; + + post_div_m = DIV_ROUND_UP_ULL((u64)parent_rate * SYNTH_PHASE_K, rate); + post_div_m = post_div_m / SYNTH_MAX_INT_DIV; + if (post_div_m > SYNTH_MAX_DIV_M) + return -EINVAL; + if (!post_div_m) + post_div_m = 1; + + for (; post_div_m < SYNTH_MAX_DIV_M; post_div_m++) { + synth_int_div = DIV_ROUND_UP_ULL((u64)parent_rate * + SYNTH_PHASE_K * + 10000000, + rate * post_div_m); + synth_frac_div = synth_int_div % 10000000; + synth_int_div /= 10000000; + + if (synth_int_div <= SYNTH_MAX_INT_DIV) + break; + } + + if (synth_int_div > SYNTH_MAX_INT_DIV) + return -EINVAL; + + v = readl_relaxed(synth->freq); + v &= ~0x1fffffff; + v |= (synth_int_div & SYNTH_MAX_INT_DIV) << 24; + v |= (synth_frac_div & 0xffffff); + v |= SYNTH_LDFREQ; + writel_relaxed(v, synth->freq); + + return post_div_m; +} + +static long ti_fapll_synth_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct fapll_synth *synth = to_synth(hw); + struct fapll_data *fd = synth->fd; + unsigned long r; + + if (ti_fapll_clock_is_bypass(fd) || !synth->div || !rate) + return -EINVAL; + + /* Only post divider m available with no fractional divider? */ + if (!synth->freq) { + unsigned long frac_rate; + u32 synth_post_div_m; + + frac_rate = ti_fapll_synth_get_frac_rate(hw, *parent_rate); + synth_post_div_m = DIV_ROUND_UP(frac_rate, rate); + r = DIV_ROUND_UP(frac_rate, synth_post_div_m); + goto out; + } + + r = *parent_rate * SYNTH_PHASE_K; + if (rate > r) + goto out; + + r = DIV_ROUND_UP_ULL(r, SYNTH_MAX_INT_DIV * SYNTH_MAX_DIV_M); + if (rate < r) + goto out; + + r = rate; +out: + return r; +} + +static int ti_fapll_synth_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct fapll_synth *synth = to_synth(hw); + struct fapll_data *fd = synth->fd; + unsigned long frac_rate, post_rate = 0; + u32 post_div_m = 0, v; + + if (ti_fapll_clock_is_bypass(fd) || !synth->div || !rate) + return -EINVAL; + + /* Produce the rate with just post divider M? */ + frac_rate = ti_fapll_synth_get_frac_rate(hw, parent_rate); + if (frac_rate < rate) { + if (!synth->freq) + return -EINVAL; + } else { + post_div_m = DIV_ROUND_UP(frac_rate, rate); + if (post_div_m && (post_div_m <= SYNTH_MAX_DIV_M)) + post_rate = DIV_ROUND_UP(frac_rate, post_div_m); + if (!synth->freq && !post_rate) + return -EINVAL; + } + + /* Need to recalculate the fractional divider? */ + if ((post_rate != rate) && synth->freq) + post_div_m = ti_fapll_synth_set_frac_rate(synth, + rate, + parent_rate); + + v = readl_relaxed(synth->div); + v &= ~SYNTH_MAX_DIV_M; + v |= post_div_m; + v |= SYNTH_LDMDIV1; + writel_relaxed(v, synth->div); + + return 0; +} + +static const struct clk_ops ti_fapll_synt_ops = { + .enable = ti_fapll_synth_enable, + .disable = ti_fapll_synth_disable, + .is_enabled = ti_fapll_synth_is_enabled, + .recalc_rate = ti_fapll_synth_recalc_rate, + .round_rate = ti_fapll_synth_round_rate, + .set_rate = ti_fapll_synth_set_rate, +}; + +static struct clk * __init ti_fapll_synth_setup(struct fapll_data *fd, + void __iomem *freq, + void __iomem *div, + int index, + const char *name, + const char *parent, + struct clk *pll_clk) +{ + struct clk_init_data *init; + struct fapll_synth *synth; + struct clk *clk = ERR_PTR(-ENOMEM); + + init = kzalloc(sizeof(*init), GFP_KERNEL); + if (!init) + return ERR_PTR(-ENOMEM); + + init->ops = &ti_fapll_synt_ops; + init->name = name; + init->parent_names = &parent; + init->num_parents = 1; + + synth = kzalloc(sizeof(*synth), GFP_KERNEL); + if (!synth) + goto free; + + synth->fd = fd; + synth->index = index; + synth->freq = freq; + synth->div = div; + synth->name = name; + synth->hw.init = init; + synth->clk_pll = pll_clk; + + clk = clk_register(NULL, &synth->hw); + if (IS_ERR(clk)) { + pr_err("failed to register clock\n"); + goto free; + } + + return clk; + +free: + kfree(synth); + kfree(init); + + return clk; +} + +static void __init ti_fapll_setup(struct device_node *node) +{ + struct fapll_data *fd; + struct clk_init_data *init = NULL; + const char *parent_name[2]; + struct clk *pll_clk; + int i; + + fd = kzalloc(sizeof(*fd), GFP_KERNEL); + if (!fd) + return; + + fd->outputs.clks = kzalloc(sizeof(struct clk *) * + MAX_FAPLL_OUTPUTS + 1, + GFP_KERNEL); + if (!fd->outputs.clks) + goto free; + + init = kzalloc(sizeof(*init), GFP_KERNEL); + if (!init) + goto free; + + init->ops = &ti_fapll_ops; + init->name = node->name; + + init->num_parents = of_clk_get_parent_count(node); + if (init->num_parents != 2) { + pr_err("%s must have two parents\n", node->name); + goto free; + } + + of_clk_parent_fill(node, parent_name, 2); + init->parent_names = parent_name; + + fd->clk_ref = of_clk_get(node, 0); + if (IS_ERR(fd->clk_ref)) { + pr_err("%s could not get clk_ref\n", node->name); + goto free; + } + + fd->clk_bypass = of_clk_get(node, 1); + if (IS_ERR(fd->clk_bypass)) { + pr_err("%s could not get clk_bypass\n", node->name); + goto free; + } + + fd->base = of_iomap(node, 0); + if (!fd->base) { + pr_err("%s could not get IO base\n", node->name); + goto free; + } + + if (fapll_is_ddr_pll(fd->base)) + fd->bypass_bit_inverted = true; + + fd->name = node->name; + fd->hw.init = init; + + /* Register the parent PLL */ + pll_clk = clk_register(NULL, &fd->hw); + if (IS_ERR(pll_clk)) + goto unmap; + + fd->outputs.clks[0] = pll_clk; + fd->outputs.clk_num++; + + /* + * Set up the child synthesizers starting at index 1 as the + * PLL output is at index 0. We need to check the clock-indices + * for numbering in case there are holes in the synth mapping, + * and then probe the synth register to see if it has a FREQ + * register available. + */ + for (i = 0; i < MAX_FAPLL_OUTPUTS; i++) { + const char *output_name; + void __iomem *freq, *div; + struct clk *synth_clk; + int output_instance; + u32 v; + + if (of_property_read_string_index(node, "clock-output-names", + i, &output_name)) + continue; + + if (of_property_read_u32_index(node, "clock-indices", i, + &output_instance)) + output_instance = i; + + freq = fd->base + (output_instance * 8); + div = freq + 4; + + /* Check for hardwired audio_pll_clk1 */ + if (is_audio_pll_clk1(freq)) { + freq = NULL; + div = NULL; + } else { + /* Does the synthesizer have a FREQ register? */ + v = readl_relaxed(freq); + if (!v) + freq = NULL; + } + synth_clk = ti_fapll_synth_setup(fd, freq, div, output_instance, + output_name, node->name, + pll_clk); + if (IS_ERR(synth_clk)) + continue; + + fd->outputs.clks[output_instance] = synth_clk; + fd->outputs.clk_num++; + + clk_register_clkdev(synth_clk, output_name, NULL); + } + + /* Register the child synthesizers as the FAPLL outputs */ + of_clk_add_provider(node, of_clk_src_onecell_get, &fd->outputs); + /* Add clock alias for the outputs */ + + kfree(init); + + return; + +unmap: + iounmap(fd->base); +free: + if (fd->clk_bypass) + clk_put(fd->clk_bypass); + if (fd->clk_ref) + clk_put(fd->clk_ref); + kfree(fd->outputs.clks); + kfree(fd); + kfree(init); +} + +CLK_OF_DECLARE(ti_fapll_clock, "ti,dm816-fapll-clock", ti_fapll_setup); diff --git a/drivers/clk/ti/fixed-factor.c b/drivers/clk/ti/fixed-factor.c new file mode 100644 index 000000000..0174a51a4 --- /dev/null +++ b/drivers/clk/ti/fixed-factor.c @@ -0,0 +1,69 @@ +/* + * TI Fixed Factor Clock + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/err.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +/** + * of_ti_fixed_factor_clk_setup - Setup function for TI fixed factor clock + * @node: device node for this clock + * + * Sets up a simple fixed factor clock based on device tree info. + */ +static void __init of_ti_fixed_factor_clk_setup(struct device_node *node) +{ + struct clk *clk; + const char *clk_name = node->name; + const char *parent_name; + u32 div, mult; + u32 flags = 0; + + if (of_property_read_u32(node, "ti,clock-div", &div)) { + pr_err("%s must have a clock-div property\n", node->name); + return; + } + + if (of_property_read_u32(node, "ti,clock-mult", &mult)) { + pr_err("%s must have a clock-mult property\n", node->name); + return; + } + + if (of_property_read_bool(node, "ti,set-rate-parent")) + flags |= CLK_SET_RATE_PARENT; + + parent_name = of_clk_get_parent_name(node, 0); + + clk = clk_register_fixed_factor(NULL, clk_name, parent_name, flags, + mult, div); + + if (!IS_ERR(clk)) { + of_clk_add_provider(node, of_clk_src_simple_get, clk); + of_ti_clk_autoidle_setup(node); + ti_clk_add_alias(NULL, clk, clk_name); + } +} +CLK_OF_DECLARE(ti_fixed_factor_clk, "ti,fixed-factor-clock", + of_ti_fixed_factor_clk_setup); diff --git a/drivers/clk/ti/gate.c b/drivers/clk/ti/gate.c new file mode 100644 index 000000000..935b2de5f --- /dev/null +++ b/drivers/clk/ti/gate.c @@ -0,0 +1,296 @@ +/* + * OMAP gate clock support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> + +#include "clock.h" + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +static int omap36xx_gate_clk_enable_with_hsdiv_restore(struct clk_hw *clk); + +static const struct clk_ops omap_gate_clkdm_clk_ops = { + .init = &omap2_init_clk_clkdm, + .enable = &omap2_clkops_enable_clkdm, + .disable = &omap2_clkops_disable_clkdm, +}; + +const struct clk_ops omap_gate_clk_ops = { + .init = &omap2_init_clk_clkdm, + .enable = &omap2_dflt_clk_enable, + .disable = &omap2_dflt_clk_disable, + .is_enabled = &omap2_dflt_clk_is_enabled, +}; + +static const struct clk_ops omap_gate_clk_hsdiv_restore_ops = { + .init = &omap2_init_clk_clkdm, + .enable = &omap36xx_gate_clk_enable_with_hsdiv_restore, + .disable = &omap2_dflt_clk_disable, + .is_enabled = &omap2_dflt_clk_is_enabled, +}; + +/** + * omap36xx_gate_clk_enable_with_hsdiv_restore - enable clocks suffering + * from HSDivider PWRDN problem Implements Errata ID: i556. + * @clk: DPLL output struct clk + * + * 3630 only: dpll3_m3_ck, dpll4_m2_ck, dpll4_m3_ck, dpll4_m4_ck, + * dpll4_m5_ck & dpll4_m6_ck dividers gets loaded with reset + * valueafter their respective PWRDN bits are set. Any dummy write + * (Any other value different from the Read value) to the + * corresponding CM_CLKSEL register will refresh the dividers. + */ +static int omap36xx_gate_clk_enable_with_hsdiv_restore(struct clk_hw *hw) +{ + struct clk_omap_divider *parent; + struct clk_hw *parent_hw; + u32 dummy_v, orig_v; + int ret; + + /* Clear PWRDN bit of HSDIVIDER */ + ret = omap2_dflt_clk_enable(hw); + + /* Parent is the x2 node, get parent of parent for the m2 div */ + parent_hw = clk_hw_get_parent(clk_hw_get_parent(hw)); + parent = to_clk_omap_divider(parent_hw); + + /* Restore the dividers */ + if (!ret) { + orig_v = ti_clk_ll_ops->clk_readl(&parent->reg); + dummy_v = orig_v; + + /* Write any other value different from the Read value */ + dummy_v ^= (1 << parent->shift); + ti_clk_ll_ops->clk_writel(dummy_v, &parent->reg); + + /* Write the original divider */ + ti_clk_ll_ops->clk_writel(orig_v, &parent->reg); + } + + return ret; +} + +static struct clk *_register_gate(struct device *dev, const char *name, + const char *parent_name, unsigned long flags, + struct clk_omap_reg *reg, u8 bit_idx, + u8 clk_gate_flags, const struct clk_ops *ops, + const struct clk_hw_omap_ops *hw_ops) +{ + struct clk_init_data init = { NULL }; + struct clk_hw_omap *clk_hw; + struct clk *clk; + + clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL); + if (!clk_hw) + return ERR_PTR(-ENOMEM); + + clk_hw->hw.init = &init; + + init.name = name; + init.ops = ops; + + memcpy(&clk_hw->enable_reg, reg, sizeof(*reg)); + clk_hw->enable_bit = bit_idx; + clk_hw->ops = hw_ops; + + clk_hw->flags = clk_gate_flags; + + init.parent_names = &parent_name; + init.num_parents = 1; + + init.flags = flags; + + clk = ti_clk_register(NULL, &clk_hw->hw, name); + + if (IS_ERR(clk)) + kfree(clk_hw); + + return clk; +} + +struct clk_hw *ti_clk_build_component_gate(struct ti_clk_gate *setup) +{ + struct clk_hw_omap *gate; + struct clk_omap_reg *reg; + const struct clk_hw_omap_ops *ops = &clkhwops_wait; + + if (!setup) + return NULL; + + gate = kzalloc(sizeof(*gate), GFP_KERNEL); + if (!gate) + return ERR_PTR(-ENOMEM); + + reg = (struct clk_omap_reg *)&gate->enable_reg; + reg->index = setup->module; + reg->offset = setup->reg; + + gate->enable_bit = setup->bit_shift; + + if (setup->flags & CLKF_NO_WAIT) + ops = NULL; + + if (setup->flags & CLKF_INTERFACE) + ops = &clkhwops_iclk_wait; + + gate->ops = ops; + + return &gate->hw; +} + +static void __init _of_ti_gate_clk_setup(struct device_node *node, + const struct clk_ops *ops, + const struct clk_hw_omap_ops *hw_ops) +{ + struct clk *clk; + const char *parent_name; + struct clk_omap_reg reg; + u8 enable_bit = 0; + u32 val; + u32 flags = 0; + u8 clk_gate_flags = 0; + + if (ops != &omap_gate_clkdm_clk_ops) { + if (ti_clk_get_reg_addr(node, 0, ®)) + return; + + if (!of_property_read_u32(node, "ti,bit-shift", &val)) + enable_bit = val; + } + + if (of_clk_get_parent_count(node) != 1) { + pr_err("%s must have 1 parent\n", node->name); + return; + } + + parent_name = of_clk_get_parent_name(node, 0); + + if (of_property_read_bool(node, "ti,set-rate-parent")) + flags |= CLK_SET_RATE_PARENT; + + if (of_property_read_bool(node, "ti,set-bit-to-disable")) + clk_gate_flags |= INVERT_ENABLE; + + clk = _register_gate(NULL, node->name, parent_name, flags, ®, + enable_bit, clk_gate_flags, ops, hw_ops); + + if (!IS_ERR(clk)) + of_clk_add_provider(node, of_clk_src_simple_get, clk); +} + +static void __init +_of_ti_composite_gate_clk_setup(struct device_node *node, + const struct clk_hw_omap_ops *hw_ops) +{ + struct clk_hw_omap *gate; + u32 val = 0; + + gate = kzalloc(sizeof(*gate), GFP_KERNEL); + if (!gate) + return; + + if (ti_clk_get_reg_addr(node, 0, &gate->enable_reg)) + goto cleanup; + + of_property_read_u32(node, "ti,bit-shift", &val); + + gate->enable_bit = val; + gate->ops = hw_ops; + + if (!ti_clk_add_component(node, &gate->hw, CLK_COMPONENT_TYPE_GATE)) + return; + +cleanup: + kfree(gate); +} + +static void __init +of_ti_composite_no_wait_gate_clk_setup(struct device_node *node) +{ + _of_ti_composite_gate_clk_setup(node, NULL); +} +CLK_OF_DECLARE(ti_composite_no_wait_gate_clk, "ti,composite-no-wait-gate-clock", + of_ti_composite_no_wait_gate_clk_setup); + +#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) +static void __init of_ti_composite_interface_clk_setup(struct device_node *node) +{ + _of_ti_composite_gate_clk_setup(node, &clkhwops_iclk_wait); +} +CLK_OF_DECLARE(ti_composite_interface_clk, "ti,composite-interface-clock", + of_ti_composite_interface_clk_setup); +#endif + +static void __init of_ti_composite_gate_clk_setup(struct device_node *node) +{ + _of_ti_composite_gate_clk_setup(node, &clkhwops_wait); +} +CLK_OF_DECLARE(ti_composite_gate_clk, "ti,composite-gate-clock", + of_ti_composite_gate_clk_setup); + + +static void __init of_ti_clkdm_gate_clk_setup(struct device_node *node) +{ + _of_ti_gate_clk_setup(node, &omap_gate_clkdm_clk_ops, NULL); +} +CLK_OF_DECLARE(ti_clkdm_gate_clk, "ti,clkdm-gate-clock", + of_ti_clkdm_gate_clk_setup); + +static void __init of_ti_hsdiv_gate_clk_setup(struct device_node *node) +{ + _of_ti_gate_clk_setup(node, &omap_gate_clk_hsdiv_restore_ops, + &clkhwops_wait); +} +CLK_OF_DECLARE(ti_hsdiv_gate_clk, "ti,hsdiv-gate-clock", + of_ti_hsdiv_gate_clk_setup); + +static void __init of_ti_gate_clk_setup(struct device_node *node) +{ + _of_ti_gate_clk_setup(node, &omap_gate_clk_ops, NULL); +} +CLK_OF_DECLARE(ti_gate_clk, "ti,gate-clock", of_ti_gate_clk_setup); + +static void __init of_ti_wait_gate_clk_setup(struct device_node *node) +{ + _of_ti_gate_clk_setup(node, &omap_gate_clk_ops, &clkhwops_wait); +} +CLK_OF_DECLARE(ti_wait_gate_clk, "ti,wait-gate-clock", + of_ti_wait_gate_clk_setup); + +#ifdef CONFIG_ARCH_OMAP3 +static void __init of_ti_am35xx_gate_clk_setup(struct device_node *node) +{ + _of_ti_gate_clk_setup(node, &omap_gate_clk_ops, + &clkhwops_am35xx_ipss_module_wait); +} +CLK_OF_DECLARE(ti_am35xx_gate_clk, "ti,am35xx-gate-clock", + of_ti_am35xx_gate_clk_setup); + +static void __init of_ti_dss_gate_clk_setup(struct device_node *node) +{ + _of_ti_gate_clk_setup(node, &omap_gate_clk_ops, + &clkhwops_omap3430es2_dss_usbhost_wait); +} +CLK_OF_DECLARE(ti_dss_gate_clk, "ti,dss-gate-clock", + of_ti_dss_gate_clk_setup); +#endif diff --git a/drivers/clk/ti/interface.c b/drivers/clk/ti/interface.c new file mode 100644 index 000000000..41ae70216 --- /dev/null +++ b/drivers/clk/ti/interface.c @@ -0,0 +1,151 @@ +/* + * OMAP interface clock support + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> +#include "clock.h" + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +static const struct clk_ops ti_interface_clk_ops = { + .init = &omap2_init_clk_clkdm, + .enable = &omap2_dflt_clk_enable, + .disable = &omap2_dflt_clk_disable, + .is_enabled = &omap2_dflt_clk_is_enabled, +}; + +static struct clk *_register_interface(struct device *dev, const char *name, + const char *parent_name, + struct clk_omap_reg *reg, u8 bit_idx, + const struct clk_hw_omap_ops *ops) +{ + struct clk_init_data init = { NULL }; + struct clk_hw_omap *clk_hw; + struct clk *clk; + + clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL); + if (!clk_hw) + return ERR_PTR(-ENOMEM); + + clk_hw->hw.init = &init; + clk_hw->ops = ops; + memcpy(&clk_hw->enable_reg, reg, sizeof(*reg)); + clk_hw->enable_bit = bit_idx; + + init.name = name; + init.ops = &ti_interface_clk_ops; + init.flags = 0; + + init.num_parents = 1; + init.parent_names = &parent_name; + + clk = ti_clk_register(NULL, &clk_hw->hw, name); + + if (IS_ERR(clk)) + kfree(clk_hw); + else + omap2_init_clk_hw_omap_clocks(&clk_hw->hw); + + return clk; +} + +static void __init _of_ti_interface_clk_setup(struct device_node *node, + const struct clk_hw_omap_ops *ops) +{ + struct clk *clk; + const char *parent_name; + struct clk_omap_reg reg; + u8 enable_bit = 0; + u32 val; + + if (ti_clk_get_reg_addr(node, 0, ®)) + return; + + if (!of_property_read_u32(node, "ti,bit-shift", &val)) + enable_bit = val; + + parent_name = of_clk_get_parent_name(node, 0); + if (!parent_name) { + pr_err("%s must have a parent\n", node->name); + return; + } + + clk = _register_interface(NULL, node->name, parent_name, ®, + enable_bit, ops); + + if (!IS_ERR(clk)) + of_clk_add_provider(node, of_clk_src_simple_get, clk); +} + +static void __init of_ti_interface_clk_setup(struct device_node *node) +{ + _of_ti_interface_clk_setup(node, &clkhwops_iclk_wait); +} +CLK_OF_DECLARE(ti_interface_clk, "ti,omap3-interface-clock", + of_ti_interface_clk_setup); + +static void __init of_ti_no_wait_interface_clk_setup(struct device_node *node) +{ + _of_ti_interface_clk_setup(node, &clkhwops_iclk); +} +CLK_OF_DECLARE(ti_no_wait_interface_clk, "ti,omap3-no-wait-interface-clock", + of_ti_no_wait_interface_clk_setup); + +#ifdef CONFIG_ARCH_OMAP3 +static void __init of_ti_hsotgusb_interface_clk_setup(struct device_node *node) +{ + _of_ti_interface_clk_setup(node, + &clkhwops_omap3430es2_iclk_hsotgusb_wait); +} +CLK_OF_DECLARE(ti_hsotgusb_interface_clk, "ti,omap3-hsotgusb-interface-clock", + of_ti_hsotgusb_interface_clk_setup); + +static void __init of_ti_dss_interface_clk_setup(struct device_node *node) +{ + _of_ti_interface_clk_setup(node, + &clkhwops_omap3430es2_iclk_dss_usbhost_wait); +} +CLK_OF_DECLARE(ti_dss_interface_clk, "ti,omap3-dss-interface-clock", + of_ti_dss_interface_clk_setup); + +static void __init of_ti_ssi_interface_clk_setup(struct device_node *node) +{ + _of_ti_interface_clk_setup(node, &clkhwops_omap3430es2_iclk_ssi_wait); +} +CLK_OF_DECLARE(ti_ssi_interface_clk, "ti,omap3-ssi-interface-clock", + of_ti_ssi_interface_clk_setup); + +static void __init of_ti_am35xx_interface_clk_setup(struct device_node *node) +{ + _of_ti_interface_clk_setup(node, &clkhwops_am35xx_ipss_wait); +} +CLK_OF_DECLARE(ti_am35xx_interface_clk, "ti,am35xx-interface-clock", + of_ti_am35xx_interface_clk_setup); +#endif + +#ifdef CONFIG_SOC_OMAP2430 +static void __init of_ti_omap2430_interface_clk_setup(struct device_node *node) +{ + _of_ti_interface_clk_setup(node, &clkhwops_omap2430_i2chs_wait); +} +CLK_OF_DECLARE(ti_omap2430_interface_clk, "ti,omap2430-interface-clock", + of_ti_omap2430_interface_clk_setup); +#endif diff --git a/drivers/clk/ti/mux.c b/drivers/clk/ti/mux.c new file mode 100644 index 000000000..69a4308a5 --- /dev/null +++ b/drivers/clk/ti/mux.c @@ -0,0 +1,295 @@ +/* + * TI Multiplexer Clock + * + * Copyright (C) 2013 Texas Instruments, Inc. + * + * Tero Kristo <t-kristo@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/err.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk/ti.h> +#include "clock.h" + +#undef pr_fmt +#define pr_fmt(fmt) "%s: " fmt, __func__ + +static u8 ti_clk_mux_get_parent(struct clk_hw *hw) +{ + struct clk_omap_mux *mux = to_clk_omap_mux(hw); + int num_parents = clk_hw_get_num_parents(hw); + u32 val; + + /* + * FIXME need a mux-specific flag to determine if val is bitwise or + * numeric. e.g. sys_clkin_ck's clksel field is 3 bits wide, but ranges + * from 0x1 to 0x7 (index starts at one) + * OTOH, pmd_trace_clk_mux_ck uses a separate bit for each clock, so + * val = 0x4 really means "bit 2, index starts at bit 0" + */ + val = ti_clk_ll_ops->clk_readl(&mux->reg) >> mux->shift; + val &= mux->mask; + + if (mux->table) { + int i; + + for (i = 0; i < num_parents; i++) + if (mux->table[i] == val) + return i; + return -EINVAL; + } + + if (val && (mux->flags & CLK_MUX_INDEX_BIT)) + val = ffs(val) - 1; + + if (val && (mux->flags & CLK_MUX_INDEX_ONE)) + val--; + + if (val >= num_parents) + return -EINVAL; + + return val; +} + +static int ti_clk_mux_set_parent(struct clk_hw *hw, u8 index) +{ + struct clk_omap_mux *mux = to_clk_omap_mux(hw); + u32 val; + + if (mux->table) { + index = mux->table[index]; + } else { + if (mux->flags & CLK_MUX_INDEX_BIT) + index = (1 << ffs(index)); + + if (mux->flags & CLK_MUX_INDEX_ONE) + index++; + } + + if (mux->flags & CLK_MUX_HIWORD_MASK) { + val = mux->mask << (mux->shift + 16); + } else { + val = ti_clk_ll_ops->clk_readl(&mux->reg); + val &= ~(mux->mask << mux->shift); + } + val |= index << mux->shift; + ti_clk_ll_ops->clk_writel(val, &mux->reg); + ti_clk_latch(&mux->reg, mux->latch); + + return 0; +} + +const struct clk_ops ti_clk_mux_ops = { + .get_parent = ti_clk_mux_get_parent, + .set_parent = ti_clk_mux_set_parent, + .determine_rate = __clk_mux_determine_rate, +}; + +static struct clk *_register_mux(struct device *dev, const char *name, + const char * const *parent_names, + u8 num_parents, unsigned long flags, + struct clk_omap_reg *reg, u8 shift, u32 mask, + s8 latch, u8 clk_mux_flags, u32 *table) +{ + struct clk_omap_mux *mux; + struct clk *clk; + struct clk_init_data init; + + /* allocate the mux */ + mux = kzalloc(sizeof(*mux), GFP_KERNEL); + if (!mux) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &ti_clk_mux_ops; + init.flags = flags | CLK_IS_BASIC; + init.parent_names = parent_names; + init.num_parents = num_parents; + + /* struct clk_mux assignments */ + memcpy(&mux->reg, reg, sizeof(*reg)); + mux->shift = shift; + mux->mask = mask; + mux->latch = latch; + mux->flags = clk_mux_flags; + mux->table = table; + mux->hw.init = &init; + + clk = ti_clk_register(dev, &mux->hw, name); + + if (IS_ERR(clk)) + kfree(mux); + + return clk; +} + +struct clk *ti_clk_register_mux(struct ti_clk *setup) +{ + struct ti_clk_mux *mux; + u32 flags; + u8 mux_flags = 0; + struct clk_omap_reg reg; + u32 mask; + + mux = setup->data; + flags = CLK_SET_RATE_NO_REPARENT; + + mask = mux->num_parents; + if (!(mux->flags & CLKF_INDEX_STARTS_AT_ONE)) + mask--; + + mask = (1 << fls(mask)) - 1; + reg.index = mux->module; + reg.offset = mux->reg; + reg.ptr = NULL; + + if (mux->flags & CLKF_INDEX_STARTS_AT_ONE) + mux_flags |= CLK_MUX_INDEX_ONE; + + if (mux->flags & CLKF_SET_RATE_PARENT) + flags |= CLK_SET_RATE_PARENT; + + return _register_mux(NULL, setup->name, mux->parents, mux->num_parents, + flags, ®, mux->bit_shift, mask, -EINVAL, + mux_flags, NULL); +} + +/** + * of_mux_clk_setup - Setup function for simple mux rate clock + * @node: DT node for the clock + * + * Sets up a basic clock multiplexer. + */ +static void of_mux_clk_setup(struct device_node *node) +{ + struct clk *clk; + struct clk_omap_reg reg; + unsigned int num_parents; + const char **parent_names; + u8 clk_mux_flags = 0; + u32 mask = 0; + u32 shift = 0; + s32 latch = -EINVAL; + u32 flags = CLK_SET_RATE_NO_REPARENT; + + num_parents = of_clk_get_parent_count(node); + if (num_parents < 2) { + pr_err("mux-clock %s must have parents\n", node->name); + return; + } + parent_names = kzalloc((sizeof(char *) * num_parents), GFP_KERNEL); + if (!parent_names) + goto cleanup; + + of_clk_parent_fill(node, parent_names, num_parents); + + if (ti_clk_get_reg_addr(node, 0, ®)) + goto cleanup; + + of_property_read_u32(node, "ti,bit-shift", &shift); + + of_property_read_u32(node, "ti,latch-bit", &latch); + + if (of_property_read_bool(node, "ti,index-starts-at-one")) + clk_mux_flags |= CLK_MUX_INDEX_ONE; + + if (of_property_read_bool(node, "ti,set-rate-parent")) + flags |= CLK_SET_RATE_PARENT; + + /* Generate bit-mask based on parent info */ + mask = num_parents; + if (!(clk_mux_flags & CLK_MUX_INDEX_ONE)) + mask--; + + mask = (1 << fls(mask)) - 1; + + clk = _register_mux(NULL, node->name, parent_names, num_parents, + flags, ®, shift, mask, latch, clk_mux_flags, + NULL); + + if (!IS_ERR(clk)) + of_clk_add_provider(node, of_clk_src_simple_get, clk); + +cleanup: + kfree(parent_names); +} +CLK_OF_DECLARE(mux_clk, "ti,mux-clock", of_mux_clk_setup); + +struct clk_hw *ti_clk_build_component_mux(struct ti_clk_mux *setup) +{ + struct clk_omap_mux *mux; + int num_parents; + + if (!setup) + return NULL; + + mux = kzalloc(sizeof(*mux), GFP_KERNEL); + if (!mux) + return ERR_PTR(-ENOMEM); + + mux->shift = setup->bit_shift; + mux->latch = -EINVAL; + + mux->reg.index = setup->module; + mux->reg.offset = setup->reg; + + if (setup->flags & CLKF_INDEX_STARTS_AT_ONE) + mux->flags |= CLK_MUX_INDEX_ONE; + + num_parents = setup->num_parents; + + mux->mask = num_parents - 1; + mux->mask = (1 << fls(mux->mask)) - 1; + + return &mux->hw; +} + +static void __init of_ti_composite_mux_clk_setup(struct device_node *node) +{ + struct clk_omap_mux *mux; + unsigned int num_parents; + u32 val; + + mux = kzalloc(sizeof(*mux), GFP_KERNEL); + if (!mux) + return; + + if (ti_clk_get_reg_addr(node, 0, &mux->reg)) + goto cleanup; + + if (!of_property_read_u32(node, "ti,bit-shift", &val)) + mux->shift = val; + + if (of_property_read_bool(node, "ti,index-starts-at-one")) + mux->flags |= CLK_MUX_INDEX_ONE; + + num_parents = of_clk_get_parent_count(node); + + if (num_parents < 2) { + pr_err("%s must have parents\n", node->name); + goto cleanup; + } + + mux->mask = num_parents - 1; + mux->mask = (1 << fls(mux->mask)) - 1; + + if (!ti_clk_add_component(node, &mux->hw, CLK_COMPONENT_TYPE_MUX)) + return; + +cleanup: + kfree(mux); +} +CLK_OF_DECLARE(ti_composite_mux_clk_setup, "ti,composite-mux-clock", + of_ti_composite_mux_clk_setup); |