diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/clk/mmp | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/clk/mmp')
-rw-r--r-- | drivers/clk/mmp/Makefile | 18 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-apbc.c | 148 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-apmu.c | 93 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-audio.c | 445 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-frac.c | 206 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-gate.c | 127 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-mix.c | 506 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-mmp2.c | 454 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-of-mmp2.c | 567 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-of-pxa168.c | 335 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-of-pxa1928.c | 264 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-of-pxa910.c | 321 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-pll.c | 170 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-pxa168.c | 354 | ||||
-rw-r--r-- | drivers/clk/mmp/clk-pxa910.c | 325 | ||||
-rw-r--r-- | drivers/clk/mmp/clk.c | 192 | ||||
-rw-r--r-- | drivers/clk/mmp/clk.h | 265 | ||||
-rw-r--r-- | drivers/clk/mmp/pwr-island.c | 115 | ||||
-rw-r--r-- | drivers/clk/mmp/reset.c | 100 | ||||
-rw-r--r-- | drivers/clk/mmp/reset.h | 32 |
20 files changed, 5037 insertions, 0 deletions
diff --git a/drivers/clk/mmp/Makefile b/drivers/clk/mmp/Makefile new file mode 100644 index 000000000..cbcc2f843 --- /dev/null +++ b/drivers/clk/mmp/Makefile @@ -0,0 +1,18 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for mmp specific clk +# + +obj-y += clk-apbc.o clk-apmu.o clk-frac.o clk-mix.o clk-gate.o clk.o + +obj-$(CONFIG_RESET_CONTROLLER) += reset.o + +obj-$(CONFIG_MACH_MMP_DT) += clk-of-pxa168.o clk-of-pxa910.o +obj-$(CONFIG_COMMON_CLK_MMP2) += clk-of-mmp2.o clk-pll.o pwr-island.o +obj-$(CONFIG_COMMON_CLK_MMP2_AUDIO) += clk-audio.o + +obj-$(CONFIG_CPU_PXA168) += clk-pxa168.o +obj-$(CONFIG_CPU_PXA910) += clk-pxa910.o +obj-$(CONFIG_CPU_MMP2) += clk-mmp2.o + +obj-y += clk-of-pxa1928.o diff --git a/drivers/clk/mmp/clk-apbc.c b/drivers/clk/mmp/clk-apbc.c new file mode 100644 index 000000000..23c43a466 --- /dev/null +++ b/drivers/clk/mmp/clk-apbc.c @@ -0,0 +1,148 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * mmp APB clock operation source file + * + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + */ + +#include <linux/kernel.h> +#include <linux/io.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/slab.h> + +#include "clk.h" + +/* Common APB clock register bit definitions */ +#define APBC_APBCLK (1 << 0) /* APB Bus Clock Enable */ +#define APBC_FNCLK (1 << 1) /* Functional Clock Enable */ +#define APBC_RST (1 << 2) /* Reset Generation */ +#define APBC_POWER (1 << 7) /* Reset Generation */ + +#define to_clk_apbc(hw) container_of(hw, struct clk_apbc, hw) +struct clk_apbc { + struct clk_hw hw; + void __iomem *base; + unsigned int delay; + unsigned int flags; + spinlock_t *lock; +}; + +static int clk_apbc_prepare(struct clk_hw *hw) +{ + struct clk_apbc *apbc = to_clk_apbc(hw); + unsigned int data; + unsigned long flags = 0; + + /* + * It may share same register as MUX clock, + * and it will impact FNCLK enable. Spinlock is needed + */ + if (apbc->lock) + spin_lock_irqsave(apbc->lock, flags); + + data = readl_relaxed(apbc->base); + if (apbc->flags & APBC_POWER_CTRL) + data |= APBC_POWER; + data |= APBC_FNCLK; + writel_relaxed(data, apbc->base); + + if (apbc->lock) + spin_unlock_irqrestore(apbc->lock, flags); + + udelay(apbc->delay); + + if (apbc->lock) + spin_lock_irqsave(apbc->lock, flags); + + data = readl_relaxed(apbc->base); + data |= APBC_APBCLK; + writel_relaxed(data, apbc->base); + + if (apbc->lock) + spin_unlock_irqrestore(apbc->lock, flags); + + udelay(apbc->delay); + + if (!(apbc->flags & APBC_NO_BUS_CTRL)) { + if (apbc->lock) + spin_lock_irqsave(apbc->lock, flags); + + data = readl_relaxed(apbc->base); + data &= ~APBC_RST; + writel_relaxed(data, apbc->base); + + if (apbc->lock) + spin_unlock_irqrestore(apbc->lock, flags); + } + + return 0; +} + +static void clk_apbc_unprepare(struct clk_hw *hw) +{ + struct clk_apbc *apbc = to_clk_apbc(hw); + unsigned long data; + unsigned long flags = 0; + + if (apbc->lock) + spin_lock_irqsave(apbc->lock, flags); + + data = readl_relaxed(apbc->base); + if (apbc->flags & APBC_POWER_CTRL) + data &= ~APBC_POWER; + data &= ~APBC_FNCLK; + writel_relaxed(data, apbc->base); + + if (apbc->lock) + spin_unlock_irqrestore(apbc->lock, flags); + + udelay(10); + + if (apbc->lock) + spin_lock_irqsave(apbc->lock, flags); + + data = readl_relaxed(apbc->base); + data &= ~APBC_APBCLK; + writel_relaxed(data, apbc->base); + + if (apbc->lock) + spin_unlock_irqrestore(apbc->lock, flags); +} + +static const struct clk_ops clk_apbc_ops = { + .prepare = clk_apbc_prepare, + .unprepare = clk_apbc_unprepare, +}; + +struct clk *mmp_clk_register_apbc(const char *name, const char *parent_name, + void __iomem *base, unsigned int delay, + unsigned int apbc_flags, spinlock_t *lock) +{ + struct clk_apbc *apbc; + struct clk *clk; + struct clk_init_data init; + + apbc = kzalloc(sizeof(*apbc), GFP_KERNEL); + if (!apbc) + return NULL; + + init.name = name; + init.ops = &clk_apbc_ops; + init.flags = CLK_SET_RATE_PARENT; + init.parent_names = (parent_name ? &parent_name : NULL); + init.num_parents = (parent_name ? 1 : 0); + + apbc->base = base; + apbc->delay = delay; + apbc->flags = apbc_flags; + apbc->lock = lock; + apbc->hw.init = &init; + + clk = clk_register(NULL, &apbc->hw); + if (IS_ERR(clk)) + kfree(apbc); + + return clk; +} diff --git a/drivers/clk/mmp/clk-apmu.c b/drivers/clk/mmp/clk-apmu.c new file mode 100644 index 000000000..9313428b0 --- /dev/null +++ b/drivers/clk/mmp/clk-apmu.c @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * mmp AXI peripharal clock operation source file + * + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + */ + +#include <linux/kernel.h> +#include <linux/io.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/slab.h> + +#include "clk.h" + +#define to_clk_apmu(clk) (container_of(clk, struct clk_apmu, clk)) +struct clk_apmu { + struct clk_hw hw; + void __iomem *base; + u32 rst_mask; + u32 enable_mask; + spinlock_t *lock; +}; + +static int clk_apmu_enable(struct clk_hw *hw) +{ + struct clk_apmu *apmu = to_clk_apmu(hw); + unsigned long data; + unsigned long flags = 0; + + if (apmu->lock) + spin_lock_irqsave(apmu->lock, flags); + + data = readl_relaxed(apmu->base) | apmu->enable_mask; + writel_relaxed(data, apmu->base); + + if (apmu->lock) + spin_unlock_irqrestore(apmu->lock, flags); + + return 0; +} + +static void clk_apmu_disable(struct clk_hw *hw) +{ + struct clk_apmu *apmu = to_clk_apmu(hw); + unsigned long data; + unsigned long flags = 0; + + if (apmu->lock) + spin_lock_irqsave(apmu->lock, flags); + + data = readl_relaxed(apmu->base) & ~apmu->enable_mask; + writel_relaxed(data, apmu->base); + + if (apmu->lock) + spin_unlock_irqrestore(apmu->lock, flags); +} + +static const struct clk_ops clk_apmu_ops = { + .enable = clk_apmu_enable, + .disable = clk_apmu_disable, +}; + +struct clk *mmp_clk_register_apmu(const char *name, const char *parent_name, + void __iomem *base, u32 enable_mask, spinlock_t *lock) +{ + struct clk_apmu *apmu; + struct clk *clk; + struct clk_init_data init; + + apmu = kzalloc(sizeof(*apmu), GFP_KERNEL); + if (!apmu) + return NULL; + + init.name = name; + init.ops = &clk_apmu_ops; + init.flags = CLK_SET_RATE_PARENT; + init.parent_names = (parent_name ? &parent_name : NULL); + init.num_parents = (parent_name ? 1 : 0); + + apmu->base = base; + apmu->enable_mask = enable_mask; + apmu->lock = lock; + apmu->hw.init = &init; + + clk = clk_register(NULL, &apmu->hw); + + if (IS_ERR(clk)) + kfree(apmu); + + return clk; +} diff --git a/drivers/clk/mmp/clk-audio.c b/drivers/clk/mmp/clk-audio.c new file mode 100644 index 000000000..7aa7f4a95 --- /dev/null +++ b/drivers/clk/mmp/clk-audio.c @@ -0,0 +1,445 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * MMP Audio Clock Controller driver + * + * Copyright (C) 2020 Lubomir Rintel <lkundrak@v3.sk> + */ + +#include <linux/clk-provider.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_clock.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> +#include <dt-bindings/clock/marvell,mmp2-audio.h> + +/* Audio Controller Registers */ +#define SSPA_AUD_CTRL 0x04 +#define SSPA_AUD_PLL_CTRL0 0x08 +#define SSPA_AUD_PLL_CTRL1 0x0c + +/* SSPA Audio Control Register */ +#define SSPA_AUD_CTRL_SYSCLK_SHIFT 0 +#define SSPA_AUD_CTRL_SYSCLK_DIV_SHIFT 1 +#define SSPA_AUD_CTRL_SSPA0_MUX_SHIFT 7 +#define SSPA_AUD_CTRL_SSPA0_SHIFT 8 +#define SSPA_AUD_CTRL_SSPA0_DIV_SHIFT 9 +#define SSPA_AUD_CTRL_SSPA1_SHIFT 16 +#define SSPA_AUD_CTRL_SSPA1_DIV_SHIFT 17 +#define SSPA_AUD_CTRL_SSPA1_MUX_SHIFT 23 +#define SSPA_AUD_CTRL_DIV_MASK 0x7e + +/* SSPA Audio PLL Control 0 Register */ +#define SSPA_AUD_PLL_CTRL0_DIV_OCLK_MODULO_MASK (0x7 << 28) +#define SSPA_AUD_PLL_CTRL0_DIV_OCLK_MODULO(x) ((x) << 28) +#define SSPA_AUD_PLL_CTRL0_FRACT_MASK (0xfffff << 8) +#define SSPA_AUD_PLL_CTRL0_FRACT(x) ((x) << 8) +#define SSPA_AUD_PLL_CTRL0_ENA_DITHER (1 << 7) +#define SSPA_AUD_PLL_CTRL0_ICP_2UA (0 << 5) +#define SSPA_AUD_PLL_CTRL0_ICP_5UA (1 << 5) +#define SSPA_AUD_PLL_CTRL0_ICP_7UA (2 << 5) +#define SSPA_AUD_PLL_CTRL0_ICP_10UA (3 << 5) +#define SSPA_AUD_PLL_CTRL0_DIV_FBCCLK_MASK (0x3 << 3) +#define SSPA_AUD_PLL_CTRL0_DIV_FBCCLK(x) ((x) << 3) +#define SSPA_AUD_PLL_CTRL0_DIV_MCLK_MASK (0x1 << 2) +#define SSPA_AUD_PLL_CTRL0_DIV_MCLK(x) ((x) << 2) +#define SSPA_AUD_PLL_CTRL0_PD_OVPROT_DIS (1 << 1) +#define SSPA_AUD_PLL_CTRL0_PU (1 << 0) + +/* SSPA Audio PLL Control 1 Register */ +#define SSPA_AUD_PLL_CTRL1_SEL_FAST_CLK (1 << 24) +#define SSPA_AUD_PLL_CTRL1_CLK_SEL_MASK (1 << 11) +#define SSPA_AUD_PLL_CTRL1_CLK_SEL_AUDIO_PLL (1 << 11) +#define SSPA_AUD_PLL_CTRL1_CLK_SEL_VCXO (0 << 11) +#define SSPA_AUD_PLL_CTRL1_DIV_OCLK_PATTERN_MASK (0x7ff << 0) +#define SSPA_AUD_PLL_CTRL1_DIV_OCLK_PATTERN(x) ((x) << 0) + +struct mmp2_audio_clk { + void __iomem *mmio_base; + + struct clk_hw audio_pll_hw; + struct clk_mux sspa_mux; + struct clk_mux sspa1_mux; + struct clk_divider sysclk_div; + struct clk_divider sspa0_div; + struct clk_divider sspa1_div; + struct clk_gate sysclk_gate; + struct clk_gate sspa0_gate; + struct clk_gate sspa1_gate; + + u32 aud_ctrl; + u32 aud_pll_ctrl0; + u32 aud_pll_ctrl1; + + spinlock_t lock; + + /* Must be last */ + struct clk_hw_onecell_data clk_data; +}; + +static const struct { + unsigned long parent_rate; + unsigned long freq_vco; + unsigned char mclk; + unsigned char fbcclk; + unsigned short fract; +} predivs[] = { + { 26000000, 135475200, 0, 0, 0x8a18 }, + { 26000000, 147456000, 0, 1, 0x0da1 }, + { 38400000, 135475200, 1, 2, 0x8208 }, + { 38400000, 147456000, 1, 3, 0xaaaa }, +}; + +static const struct { + unsigned char divisor; + unsigned char modulo; + unsigned char pattern; +} postdivs[] = { + { 1, 3, 0, }, + { 2, 5, 0, }, + { 4, 0, 0, }, + { 6, 1, 1, }, + { 8, 1, 0, }, + { 9, 1, 2, }, + { 12, 2, 1, }, + { 16, 2, 0, }, + { 18, 2, 2, }, + { 24, 4, 1, }, + { 36, 4, 2, }, + { 48, 6, 1, }, + { 72, 6, 2, }, +}; + +static unsigned long audio_pll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct mmp2_audio_clk *priv = container_of(hw, struct mmp2_audio_clk, audio_pll_hw); + unsigned int prediv; + unsigned int postdiv; + u32 aud_pll_ctrl0; + u32 aud_pll_ctrl1; + + aud_pll_ctrl0 = readl(priv->mmio_base + SSPA_AUD_PLL_CTRL0); + aud_pll_ctrl0 &= SSPA_AUD_PLL_CTRL0_DIV_OCLK_MODULO_MASK | + SSPA_AUD_PLL_CTRL0_FRACT_MASK | + SSPA_AUD_PLL_CTRL0_ENA_DITHER | + SSPA_AUD_PLL_CTRL0_DIV_FBCCLK_MASK | + SSPA_AUD_PLL_CTRL0_DIV_MCLK_MASK | + SSPA_AUD_PLL_CTRL0_PU; + + aud_pll_ctrl1 = readl(priv->mmio_base + SSPA_AUD_PLL_CTRL1); + aud_pll_ctrl1 &= SSPA_AUD_PLL_CTRL1_CLK_SEL_MASK | + SSPA_AUD_PLL_CTRL1_DIV_OCLK_PATTERN_MASK; + + for (prediv = 0; prediv < ARRAY_SIZE(predivs); prediv++) { + if (predivs[prediv].parent_rate != parent_rate) + continue; + for (postdiv = 0; postdiv < ARRAY_SIZE(postdivs); postdiv++) { + unsigned long freq; + u32 val; + + val = SSPA_AUD_PLL_CTRL0_ENA_DITHER; + val |= SSPA_AUD_PLL_CTRL0_PU; + val |= SSPA_AUD_PLL_CTRL0_DIV_OCLK_MODULO(postdivs[postdiv].modulo); + val |= SSPA_AUD_PLL_CTRL0_FRACT(predivs[prediv].fract); + val |= SSPA_AUD_PLL_CTRL0_DIV_FBCCLK(predivs[prediv].fbcclk); + val |= SSPA_AUD_PLL_CTRL0_DIV_MCLK(predivs[prediv].mclk); + if (val != aud_pll_ctrl0) + continue; + + val = SSPA_AUD_PLL_CTRL1_CLK_SEL_AUDIO_PLL; + val |= SSPA_AUD_PLL_CTRL1_DIV_OCLK_PATTERN(postdivs[postdiv].pattern); + if (val != aud_pll_ctrl1) + continue; + + freq = predivs[prediv].freq_vco; + freq /= postdivs[postdiv].divisor; + return freq; + } + } + + return 0; +} + +static long audio_pll_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + unsigned int prediv; + unsigned int postdiv; + long rounded = 0; + + for (prediv = 0; prediv < ARRAY_SIZE(predivs); prediv++) { + if (predivs[prediv].parent_rate != *parent_rate) + continue; + for (postdiv = 0; postdiv < ARRAY_SIZE(postdivs); postdiv++) { + long freq = predivs[prediv].freq_vco; + + freq /= postdivs[postdiv].divisor; + if (freq == rate) + return rate; + if (freq < rate) + continue; + if (rounded && freq > rounded) + continue; + rounded = freq; + } + } + + return rounded; +} + +static int audio_pll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct mmp2_audio_clk *priv = container_of(hw, struct mmp2_audio_clk, audio_pll_hw); + unsigned int prediv; + unsigned int postdiv; + unsigned long val; + + for (prediv = 0; prediv < ARRAY_SIZE(predivs); prediv++) { + if (predivs[prediv].parent_rate != parent_rate) + continue; + + for (postdiv = 0; postdiv < ARRAY_SIZE(postdivs); postdiv++) { + if (rate * postdivs[postdiv].divisor != predivs[prediv].freq_vco) + continue; + + val = SSPA_AUD_PLL_CTRL0_ENA_DITHER; + val |= SSPA_AUD_PLL_CTRL0_PU; + val |= SSPA_AUD_PLL_CTRL0_DIV_OCLK_MODULO(postdivs[postdiv].modulo); + val |= SSPA_AUD_PLL_CTRL0_FRACT(predivs[prediv].fract); + val |= SSPA_AUD_PLL_CTRL0_DIV_FBCCLK(predivs[prediv].fbcclk); + val |= SSPA_AUD_PLL_CTRL0_DIV_MCLK(predivs[prediv].mclk); + writel(val, priv->mmio_base + SSPA_AUD_PLL_CTRL0); + + val = SSPA_AUD_PLL_CTRL1_CLK_SEL_AUDIO_PLL; + val |= SSPA_AUD_PLL_CTRL1_DIV_OCLK_PATTERN(postdivs[postdiv].pattern); + writel(val, priv->mmio_base + SSPA_AUD_PLL_CTRL1); + + return 0; + } + } + + return -ERANGE; +} + +static const struct clk_ops audio_pll_ops = { + .recalc_rate = audio_pll_recalc_rate, + .round_rate = audio_pll_round_rate, + .set_rate = audio_pll_set_rate, +}; + +static int register_clocks(struct mmp2_audio_clk *priv, struct device *dev) +{ + const struct clk_parent_data sspa_mux_parents[] = { + { .hw = &priv->audio_pll_hw }, + { .fw_name = "i2s0" }, + }; + const struct clk_parent_data sspa1_mux_parents[] = { + { .hw = &priv->audio_pll_hw }, + { .fw_name = "i2s1" }, + }; + int ret; + + priv->audio_pll_hw.init = CLK_HW_INIT_FW_NAME("audio_pll", + "vctcxo", &audio_pll_ops, + CLK_SET_RATE_PARENT); + ret = devm_clk_hw_register(dev, &priv->audio_pll_hw); + if (ret) + return ret; + + priv->sspa_mux.hw.init = CLK_HW_INIT_PARENTS_DATA("sspa_mux", + sspa_mux_parents, &clk_mux_ops, + CLK_SET_RATE_PARENT); + priv->sspa_mux.reg = priv->mmio_base + SSPA_AUD_CTRL; + priv->sspa_mux.mask = 1; + priv->sspa_mux.shift = SSPA_AUD_CTRL_SSPA0_MUX_SHIFT; + ret = devm_clk_hw_register(dev, &priv->sspa_mux.hw); + if (ret) + return ret; + + priv->sysclk_div.hw.init = CLK_HW_INIT_HW("sys_div", + &priv->sspa_mux.hw, &clk_divider_ops, + CLK_SET_RATE_PARENT); + priv->sysclk_div.reg = priv->mmio_base + SSPA_AUD_CTRL; + priv->sysclk_div.shift = SSPA_AUD_CTRL_SYSCLK_DIV_SHIFT; + priv->sysclk_div.width = 6; + priv->sysclk_div.flags = CLK_DIVIDER_ONE_BASED; + priv->sysclk_div.flags |= CLK_DIVIDER_ROUND_CLOSEST; + priv->sysclk_div.flags |= CLK_DIVIDER_ALLOW_ZERO; + ret = devm_clk_hw_register(dev, &priv->sysclk_div.hw); + if (ret) + return ret; + + priv->sysclk_gate.hw.init = CLK_HW_INIT_HW("sys_clk", + &priv->sysclk_div.hw, &clk_gate_ops, + CLK_SET_RATE_PARENT); + priv->sysclk_gate.reg = priv->mmio_base + SSPA_AUD_CTRL; + priv->sysclk_gate.bit_idx = SSPA_AUD_CTRL_SYSCLK_SHIFT; + ret = devm_clk_hw_register(dev, &priv->sysclk_gate.hw); + if (ret) + return ret; + + priv->sspa0_div.hw.init = CLK_HW_INIT_HW("sspa0_div", + &priv->sspa_mux.hw, &clk_divider_ops, 0); + priv->sspa0_div.reg = priv->mmio_base + SSPA_AUD_CTRL; + priv->sspa0_div.shift = SSPA_AUD_CTRL_SSPA0_DIV_SHIFT; + priv->sspa0_div.width = 6; + priv->sspa0_div.flags = CLK_DIVIDER_ONE_BASED; + priv->sspa0_div.flags |= CLK_DIVIDER_ROUND_CLOSEST; + priv->sspa0_div.flags |= CLK_DIVIDER_ALLOW_ZERO; + ret = devm_clk_hw_register(dev, &priv->sspa0_div.hw); + if (ret) + return ret; + + priv->sspa0_gate.hw.init = CLK_HW_INIT_HW("sspa0_clk", + &priv->sspa0_div.hw, &clk_gate_ops, + CLK_SET_RATE_PARENT); + priv->sspa0_gate.reg = priv->mmio_base + SSPA_AUD_CTRL; + priv->sspa0_gate.bit_idx = SSPA_AUD_CTRL_SSPA0_SHIFT; + ret = devm_clk_hw_register(dev, &priv->sspa0_gate.hw); + if (ret) + return ret; + + priv->sspa1_mux.hw.init = CLK_HW_INIT_PARENTS_DATA("sspa1_mux", + sspa1_mux_parents, &clk_mux_ops, + CLK_SET_RATE_PARENT); + priv->sspa1_mux.reg = priv->mmio_base + SSPA_AUD_CTRL; + priv->sspa1_mux.mask = 1; + priv->sspa1_mux.shift = SSPA_AUD_CTRL_SSPA1_MUX_SHIFT; + ret = devm_clk_hw_register(dev, &priv->sspa1_mux.hw); + if (ret) + return ret; + + priv->sspa1_div.hw.init = CLK_HW_INIT_HW("sspa1_div", + &priv->sspa1_mux.hw, &clk_divider_ops, 0); + priv->sspa1_div.reg = priv->mmio_base + SSPA_AUD_CTRL; + priv->sspa1_div.shift = SSPA_AUD_CTRL_SSPA1_DIV_SHIFT; + priv->sspa1_div.width = 6; + priv->sspa1_div.flags = CLK_DIVIDER_ONE_BASED; + priv->sspa1_div.flags |= CLK_DIVIDER_ROUND_CLOSEST; + priv->sspa1_div.flags |= CLK_DIVIDER_ALLOW_ZERO; + ret = devm_clk_hw_register(dev, &priv->sspa1_div.hw); + if (ret) + return ret; + + priv->sspa1_gate.hw.init = CLK_HW_INIT_HW("sspa1_clk", + &priv->sspa1_div.hw, &clk_gate_ops, + CLK_SET_RATE_PARENT); + priv->sspa1_gate.reg = priv->mmio_base + SSPA_AUD_CTRL; + priv->sspa1_gate.bit_idx = SSPA_AUD_CTRL_SSPA1_SHIFT; + ret = devm_clk_hw_register(dev, &priv->sspa1_gate.hw); + if (ret) + return ret; + + priv->clk_data.hws[MMP2_CLK_AUDIO_SYSCLK] = &priv->sysclk_gate.hw; + priv->clk_data.hws[MMP2_CLK_AUDIO_SSPA0] = &priv->sspa0_gate.hw; + priv->clk_data.hws[MMP2_CLK_AUDIO_SSPA1] = &priv->sspa1_gate.hw; + priv->clk_data.num = MMP2_CLK_AUDIO_NR_CLKS; + + return of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get, + &priv->clk_data); +} + +static int mmp2_audio_clk_probe(struct platform_device *pdev) +{ + struct mmp2_audio_clk *priv; + int ret; + + priv = devm_kzalloc(&pdev->dev, + struct_size(priv, clk_data.hws, + MMP2_CLK_AUDIO_NR_CLKS), + GFP_KERNEL); + if (!priv) + return -ENOMEM; + + spin_lock_init(&priv->lock); + platform_set_drvdata(pdev, priv); + + priv->mmio_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->mmio_base)) + return PTR_ERR(priv->mmio_base); + + pm_runtime_enable(&pdev->dev); + ret = pm_clk_create(&pdev->dev); + if (ret) + goto disable_pm_runtime; + + ret = pm_clk_add(&pdev->dev, "audio"); + if (ret) + goto destroy_pm_clk; + + ret = register_clocks(priv, &pdev->dev); + if (ret) + goto destroy_pm_clk; + + return 0; + +destroy_pm_clk: + pm_clk_destroy(&pdev->dev); +disable_pm_runtime: + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static int mmp2_audio_clk_remove(struct platform_device *pdev) +{ + pm_clk_destroy(&pdev->dev); + pm_runtime_disable(&pdev->dev); + + return 0; +} + +#ifdef CONFIG_PM +static int mmp2_audio_clk_suspend(struct device *dev) +{ + struct mmp2_audio_clk *priv = dev_get_drvdata(dev); + + priv->aud_ctrl = readl(priv->mmio_base + SSPA_AUD_CTRL); + priv->aud_pll_ctrl0 = readl(priv->mmio_base + SSPA_AUD_PLL_CTRL0); + priv->aud_pll_ctrl1 = readl(priv->mmio_base + SSPA_AUD_PLL_CTRL1); + pm_clk_suspend(dev); + + return 0; +} + +static int mmp2_audio_clk_resume(struct device *dev) +{ + struct mmp2_audio_clk *priv = dev_get_drvdata(dev); + + pm_clk_resume(dev); + writel(priv->aud_ctrl, priv->mmio_base + SSPA_AUD_CTRL); + writel(priv->aud_pll_ctrl0, priv->mmio_base + SSPA_AUD_PLL_CTRL0); + writel(priv->aud_pll_ctrl1, priv->mmio_base + SSPA_AUD_PLL_CTRL1); + + return 0; +} +#endif + +static const struct dev_pm_ops mmp2_audio_clk_pm_ops = { + SET_RUNTIME_PM_OPS(mmp2_audio_clk_suspend, mmp2_audio_clk_resume, NULL) +}; + +static const struct of_device_id mmp2_audio_clk_of_match[] = { + { .compatible = "marvell,mmp2-audio-clock" }, + {} +}; + +MODULE_DEVICE_TABLE(of, mmp2_audio_clk_of_match); + +static struct platform_driver mmp2_audio_clk_driver = { + .driver = { + .name = "mmp2-audio-clock", + .of_match_table = of_match_ptr(mmp2_audio_clk_of_match), + .pm = &mmp2_audio_clk_pm_ops, + }, + .probe = mmp2_audio_clk_probe, + .remove = mmp2_audio_clk_remove, +}; +module_platform_driver(mmp2_audio_clk_driver); + +MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>"); +MODULE_DESCRIPTION("Clock driver for MMP2 Audio subsystem"); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/mmp/clk-frac.c b/drivers/clk/mmp/clk-frac.c new file mode 100644 index 000000000..1b90867b6 --- /dev/null +++ b/drivers/clk/mmp/clk-frac.c @@ -0,0 +1,206 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * mmp factor clock operation source file + * + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/err.h> + +#include "clk.h" +/* + * It is M/N clock + * + * Fout from synthesizer can be given from two equations: + * numerator/denominator = Fin / (Fout * factor) + */ + +#define to_clk_factor(hw) container_of(hw, struct mmp_clk_factor, hw) + +static long clk_factor_round_rate(struct clk_hw *hw, unsigned long drate, + unsigned long *prate) +{ + struct mmp_clk_factor *factor = to_clk_factor(hw); + u64 rate = 0, prev_rate; + int i; + + for (i = 0; i < factor->ftbl_cnt; i++) { + prev_rate = rate; + rate = *prate; + rate *= factor->ftbl[i].den; + do_div(rate, factor->ftbl[i].num * factor->masks->factor); + + if (rate > drate) + break; + } + if ((i == 0) || (i == factor->ftbl_cnt)) { + return rate; + } else { + if ((drate - prev_rate) > (rate - drate)) + return rate; + else + return prev_rate; + } +} + +static unsigned long clk_factor_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct mmp_clk_factor *factor = to_clk_factor(hw); + struct mmp_clk_factor_masks *masks = factor->masks; + unsigned int val, num, den; + u64 rate; + + val = readl_relaxed(factor->base); + + /* calculate numerator */ + num = (val >> masks->num_shift) & masks->num_mask; + + /* calculate denominator */ + den = (val >> masks->den_shift) & masks->den_mask; + + if (!den) + return 0; + + rate = parent_rate; + rate *= den; + do_div(rate, num * factor->masks->factor); + + return rate; +} + +/* Configures new clock rate*/ +static int clk_factor_set_rate(struct clk_hw *hw, unsigned long drate, + unsigned long prate) +{ + struct mmp_clk_factor *factor = to_clk_factor(hw); + struct mmp_clk_factor_masks *masks = factor->masks; + int i; + unsigned long val; + unsigned long flags = 0; + u64 rate = 0; + + for (i = 0; i < factor->ftbl_cnt; i++) { + rate = prate; + rate *= factor->ftbl[i].den; + do_div(rate, factor->ftbl[i].num * factor->masks->factor); + + if (rate > drate) + break; + } + if (i > 0) + i--; + + if (factor->lock) + spin_lock_irqsave(factor->lock, flags); + + val = readl_relaxed(factor->base); + + val &= ~(masks->num_mask << masks->num_shift); + val |= (factor->ftbl[i].num & masks->num_mask) << masks->num_shift; + + val &= ~(masks->den_mask << masks->den_shift); + val |= (factor->ftbl[i].den & masks->den_mask) << masks->den_shift; + + writel_relaxed(val, factor->base); + + if (factor->lock) + spin_unlock_irqrestore(factor->lock, flags); + + return 0; +} + +static int clk_factor_init(struct clk_hw *hw) +{ + struct mmp_clk_factor *factor = to_clk_factor(hw); + struct mmp_clk_factor_masks *masks = factor->masks; + u32 val, num, den; + int i; + unsigned long flags = 0; + + if (factor->lock) + spin_lock_irqsave(factor->lock, flags); + + val = readl(factor->base); + + /* calculate numerator */ + num = (val >> masks->num_shift) & masks->num_mask; + + /* calculate denominator */ + den = (val >> masks->den_shift) & masks->den_mask; + + for (i = 0; i < factor->ftbl_cnt; i++) + if (den == factor->ftbl[i].den && num == factor->ftbl[i].num) + break; + + if (i >= factor->ftbl_cnt) { + val &= ~(masks->num_mask << masks->num_shift); + val |= (factor->ftbl[0].num & masks->num_mask) << + masks->num_shift; + + val &= ~(masks->den_mask << masks->den_shift); + val |= (factor->ftbl[0].den & masks->den_mask) << + masks->den_shift; + } + + if (!(val & masks->enable_mask) || i >= factor->ftbl_cnt) { + val |= masks->enable_mask; + writel(val, factor->base); + } + + if (factor->lock) + spin_unlock_irqrestore(factor->lock, flags); + + return 0; +} + +static const struct clk_ops clk_factor_ops = { + .recalc_rate = clk_factor_recalc_rate, + .round_rate = clk_factor_round_rate, + .set_rate = clk_factor_set_rate, + .init = clk_factor_init, +}; + +struct clk *mmp_clk_register_factor(const char *name, const char *parent_name, + unsigned long flags, void __iomem *base, + struct mmp_clk_factor_masks *masks, + struct mmp_clk_factor_tbl *ftbl, + unsigned int ftbl_cnt, spinlock_t *lock) +{ + struct mmp_clk_factor *factor; + struct clk_init_data init; + struct clk *clk; + + if (!masks) { + pr_err("%s: must pass a clk_factor_mask\n", __func__); + return ERR_PTR(-EINVAL); + } + + factor = kzalloc(sizeof(*factor), GFP_KERNEL); + if (!factor) + return ERR_PTR(-ENOMEM); + + /* struct clk_aux assignments */ + factor->base = base; + factor->masks = masks; + factor->ftbl = ftbl; + factor->ftbl_cnt = ftbl_cnt; + factor->hw.init = &init; + factor->lock = lock; + + init.name = name; + init.ops = &clk_factor_ops; + init.flags = flags; + init.parent_names = &parent_name; + init.num_parents = 1; + + clk = clk_register(NULL, &factor->hw); + if (IS_ERR_OR_NULL(clk)) + kfree(factor); + + return clk; +} diff --git a/drivers/clk/mmp/clk-gate.c b/drivers/clk/mmp/clk-gate.c new file mode 100644 index 000000000..350eeb3e9 --- /dev/null +++ b/drivers/clk/mmp/clk-gate.c @@ -0,0 +1,127 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * mmp gate clock operation source file + * + * Copyright (C) 2014 Marvell + * Chao Xie <chao.xie@marvell.com> + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/err.h> +#include <linux/delay.h> + +#include "clk.h" + +/* + * Some clocks will have mutiple bits to enable the clocks, and + * the bits to disable the clock is not same as enabling bits. + */ + +#define to_clk_mmp_gate(hw) container_of(hw, struct mmp_clk_gate, hw) + +static int mmp_clk_gate_enable(struct clk_hw *hw) +{ + struct mmp_clk_gate *gate = to_clk_mmp_gate(hw); + unsigned long flags = 0; + unsigned long rate; + u32 tmp; + + if (gate->lock) + spin_lock_irqsave(gate->lock, flags); + + tmp = readl(gate->reg); + tmp &= ~gate->mask; + tmp |= gate->val_enable; + writel(tmp, gate->reg); + + if (gate->lock) + spin_unlock_irqrestore(gate->lock, flags); + + if (gate->flags & MMP_CLK_GATE_NEED_DELAY) { + rate = clk_hw_get_rate(hw); + /* Need delay 2 cycles. */ + udelay(2000000/rate); + } + + return 0; +} + +static void mmp_clk_gate_disable(struct clk_hw *hw) +{ + struct mmp_clk_gate *gate = to_clk_mmp_gate(hw); + unsigned long flags = 0; + u32 tmp; + + if (gate->lock) + spin_lock_irqsave(gate->lock, flags); + + tmp = readl(gate->reg); + tmp &= ~gate->mask; + tmp |= gate->val_disable; + writel(tmp, gate->reg); + + if (gate->lock) + spin_unlock_irqrestore(gate->lock, flags); +} + +static int mmp_clk_gate_is_enabled(struct clk_hw *hw) +{ + struct mmp_clk_gate *gate = to_clk_mmp_gate(hw); + unsigned long flags = 0; + u32 tmp; + + if (gate->lock) + spin_lock_irqsave(gate->lock, flags); + + tmp = readl(gate->reg); + + if (gate->lock) + spin_unlock_irqrestore(gate->lock, flags); + + return (tmp & gate->mask) == gate->val_enable; +} + +const struct clk_ops mmp_clk_gate_ops = { + .enable = mmp_clk_gate_enable, + .disable = mmp_clk_gate_disable, + .is_enabled = mmp_clk_gate_is_enabled, +}; + +struct clk *mmp_clk_register_gate(struct device *dev, const char *name, + const char *parent_name, unsigned long flags, + void __iomem *reg, u32 mask, u32 val_enable, u32 val_disable, + unsigned int gate_flags, spinlock_t *lock) +{ + struct mmp_clk_gate *gate; + struct clk *clk; + struct clk_init_data init; + + /* allocate the gate */ + gate = kzalloc(sizeof(*gate), GFP_KERNEL); + if (!gate) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &mmp_clk_gate_ops; + init.flags = flags; + init.parent_names = (parent_name ? &parent_name : NULL); + init.num_parents = (parent_name ? 1 : 0); + + /* struct clk_gate assignments */ + gate->reg = reg; + gate->mask = mask; + gate->val_enable = val_enable; + gate->val_disable = val_disable; + gate->flags = gate_flags; + gate->lock = lock; + gate->hw.init = &init; + + clk = clk_register(dev, &gate->hw); + + if (IS_ERR(clk)) + kfree(gate); + + return clk; +} diff --git a/drivers/clk/mmp/clk-mix.c b/drivers/clk/mmp/clk-mix.c new file mode 100644 index 000000000..454d131f4 --- /dev/null +++ b/drivers/clk/mmp/clk-mix.c @@ -0,0 +1,506 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * mmp mix(div and mux) clock operation source file + * + * Copyright (C) 2014 Marvell + * Chao Xie <chao.xie@marvell.com> + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/err.h> + +#include "clk.h" + +/* + * The mix clock is a clock combined mux and div type clock. + * Because the div field and mux field need to be set at same + * time, we can not divide it into 2 types of clock + */ + +#define to_clk_mix(hw) container_of(hw, struct mmp_clk_mix, hw) + +static unsigned int _get_maxdiv(struct mmp_clk_mix *mix) +{ + unsigned int div_mask = (1 << mix->reg_info.width_div) - 1; + unsigned int maxdiv = 0; + struct clk_div_table *clkt; + + if (mix->div_flags & CLK_DIVIDER_ONE_BASED) + return div_mask; + if (mix->div_flags & CLK_DIVIDER_POWER_OF_TWO) + return 1 << div_mask; + if (mix->div_table) { + for (clkt = mix->div_table; clkt->div; clkt++) + if (clkt->div > maxdiv) + maxdiv = clkt->div; + return maxdiv; + } + return div_mask + 1; +} + +static unsigned int _get_div(struct mmp_clk_mix *mix, unsigned int val) +{ + struct clk_div_table *clkt; + + if (mix->div_flags & CLK_DIVIDER_ONE_BASED) + return val; + if (mix->div_flags & CLK_DIVIDER_POWER_OF_TWO) + return 1 << val; + if (mix->div_table) { + for (clkt = mix->div_table; clkt->div; clkt++) + if (clkt->val == val) + return clkt->div; + if (clkt->div == 0) + return 0; + } + return val + 1; +} + +static unsigned int _get_mux(struct mmp_clk_mix *mix, unsigned int val) +{ + int num_parents = clk_hw_get_num_parents(&mix->hw); + int i; + + if (mix->mux_flags & CLK_MUX_INDEX_BIT) + return ffs(val) - 1; + if (mix->mux_flags & CLK_MUX_INDEX_ONE) + return val - 1; + if (mix->mux_table) { + for (i = 0; i < num_parents; i++) + if (mix->mux_table[i] == val) + return i; + if (i == num_parents) + return 0; + } + + return val; +} +static unsigned int _get_div_val(struct mmp_clk_mix *mix, unsigned int div) +{ + struct clk_div_table *clkt; + + if (mix->div_flags & CLK_DIVIDER_ONE_BASED) + return div; + if (mix->div_flags & CLK_DIVIDER_POWER_OF_TWO) + return __ffs(div); + if (mix->div_table) { + for (clkt = mix->div_table; clkt->div; clkt++) + if (clkt->div == div) + return clkt->val; + if (clkt->div == 0) + return 0; + } + + return div - 1; +} + +static unsigned int _get_mux_val(struct mmp_clk_mix *mix, unsigned int mux) +{ + if (mix->mux_table) + return mix->mux_table[mux]; + + return mux; +} + +static void _filter_clk_table(struct mmp_clk_mix *mix, + struct mmp_clk_mix_clk_table *table, + unsigned int table_size) +{ + int i; + struct mmp_clk_mix_clk_table *item; + struct clk_hw *parent, *hw; + unsigned long parent_rate; + + hw = &mix->hw; + + for (i = 0; i < table_size; i++) { + item = &table[i]; + parent = clk_hw_get_parent_by_index(hw, item->parent_index); + parent_rate = clk_hw_get_rate(parent); + if (parent_rate % item->rate) { + item->valid = 0; + } else { + item->divisor = parent_rate / item->rate; + item->valid = 1; + } + } +} + +static int _set_rate(struct mmp_clk_mix *mix, u32 mux_val, u32 div_val, + unsigned int change_mux, unsigned int change_div) +{ + struct mmp_clk_mix_reg_info *ri = &mix->reg_info; + u8 width, shift; + u32 mux_div, fc_req; + int ret, timeout = 50; + unsigned long flags = 0; + + if (!change_mux && !change_div) + return -EINVAL; + + if (mix->lock) + spin_lock_irqsave(mix->lock, flags); + + if (mix->type == MMP_CLK_MIX_TYPE_V1 + || mix->type == MMP_CLK_MIX_TYPE_V2) + mux_div = readl(ri->reg_clk_ctrl); + else + mux_div = readl(ri->reg_clk_sel); + + if (change_div) { + width = ri->width_div; + shift = ri->shift_div; + mux_div &= ~MMP_CLK_BITS_MASK(width, shift); + mux_div |= MMP_CLK_BITS_SET_VAL(div_val, width, shift); + } + + if (change_mux) { + width = ri->width_mux; + shift = ri->shift_mux; + mux_div &= ~MMP_CLK_BITS_MASK(width, shift); + mux_div |= MMP_CLK_BITS_SET_VAL(mux_val, width, shift); + } + + if (mix->type == MMP_CLK_MIX_TYPE_V1) { + writel(mux_div, ri->reg_clk_ctrl); + } else if (mix->type == MMP_CLK_MIX_TYPE_V2) { + mux_div |= (1 << ri->bit_fc); + writel(mux_div, ri->reg_clk_ctrl); + + do { + fc_req = readl(ri->reg_clk_ctrl); + timeout--; + if (!(fc_req & (1 << ri->bit_fc))) + break; + } while (timeout); + + if (timeout == 0) { + pr_err("%s:%s cannot do frequency change\n", + __func__, clk_hw_get_name(&mix->hw)); + ret = -EBUSY; + goto error; + } + } else { + fc_req = readl(ri->reg_clk_ctrl); + fc_req |= 1 << ri->bit_fc; + writel(fc_req, ri->reg_clk_ctrl); + writel(mux_div, ri->reg_clk_sel); + fc_req &= ~(1 << ri->bit_fc); + } + + ret = 0; +error: + if (mix->lock) + spin_unlock_irqrestore(mix->lock, flags); + + return ret; +} + +static int mmp_clk_mix_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + struct mmp_clk_mix *mix = to_clk_mix(hw); + struct mmp_clk_mix_clk_table *item; + struct clk_hw *parent, *parent_best; + unsigned long parent_rate, mix_rate, mix_rate_best, parent_rate_best; + unsigned long gap, gap_best; + u32 div_val_max; + unsigned int div; + int i, j; + + + mix_rate_best = 0; + parent_rate_best = 0; + gap_best = ULONG_MAX; + parent_best = NULL; + + if (mix->table) { + for (i = 0; i < mix->table_size; i++) { + item = &mix->table[i]; + if (item->valid == 0) + continue; + parent = clk_hw_get_parent_by_index(hw, + item->parent_index); + parent_rate = clk_hw_get_rate(parent); + mix_rate = parent_rate / item->divisor; + gap = abs(mix_rate - req->rate); + if (!parent_best || gap < gap_best) { + parent_best = parent; + parent_rate_best = parent_rate; + mix_rate_best = mix_rate; + gap_best = gap; + if (gap_best == 0) + goto found; + } + } + } else { + for (i = 0; i < clk_hw_get_num_parents(hw); i++) { + parent = clk_hw_get_parent_by_index(hw, i); + parent_rate = clk_hw_get_rate(parent); + div_val_max = _get_maxdiv(mix); + for (j = 0; j < div_val_max; j++) { + div = _get_div(mix, j); + mix_rate = parent_rate / div; + gap = abs(mix_rate - req->rate); + if (!parent_best || gap < gap_best) { + parent_best = parent; + parent_rate_best = parent_rate; + mix_rate_best = mix_rate; + gap_best = gap; + if (gap_best == 0) + goto found; + } + } + } + } + +found: + if (!parent_best) + return -EINVAL; + + req->best_parent_rate = parent_rate_best; + req->best_parent_hw = parent_best; + req->rate = mix_rate_best; + + return 0; +} + +static int mmp_clk_mix_set_rate_and_parent(struct clk_hw *hw, + unsigned long rate, + unsigned long parent_rate, + u8 index) +{ + struct mmp_clk_mix *mix = to_clk_mix(hw); + unsigned int div; + u32 div_val, mux_val; + + div = parent_rate / rate; + div_val = _get_div_val(mix, div); + mux_val = _get_mux_val(mix, index); + + return _set_rate(mix, mux_val, div_val, 1, 1); +} + +static u8 mmp_clk_mix_get_parent(struct clk_hw *hw) +{ + struct mmp_clk_mix *mix = to_clk_mix(hw); + struct mmp_clk_mix_reg_info *ri = &mix->reg_info; + unsigned long flags = 0; + u32 mux_div = 0; + u8 width, shift; + u32 mux_val; + + if (mix->lock) + spin_lock_irqsave(mix->lock, flags); + + if (mix->type == MMP_CLK_MIX_TYPE_V1 + || mix->type == MMP_CLK_MIX_TYPE_V2) + mux_div = readl(ri->reg_clk_ctrl); + else + mux_div = readl(ri->reg_clk_sel); + + if (mix->lock) + spin_unlock_irqrestore(mix->lock, flags); + + width = mix->reg_info.width_mux; + shift = mix->reg_info.shift_mux; + + mux_val = MMP_CLK_BITS_GET_VAL(mux_div, width, shift); + + return _get_mux(mix, mux_val); +} + +static unsigned long mmp_clk_mix_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct mmp_clk_mix *mix = to_clk_mix(hw); + struct mmp_clk_mix_reg_info *ri = &mix->reg_info; + unsigned long flags = 0; + u32 mux_div = 0; + u8 width, shift; + unsigned int div; + + if (mix->lock) + spin_lock_irqsave(mix->lock, flags); + + if (mix->type == MMP_CLK_MIX_TYPE_V1 + || mix->type == MMP_CLK_MIX_TYPE_V2) + mux_div = readl(ri->reg_clk_ctrl); + else + mux_div = readl(ri->reg_clk_sel); + + if (mix->lock) + spin_unlock_irqrestore(mix->lock, flags); + + width = mix->reg_info.width_div; + shift = mix->reg_info.shift_div; + + div = _get_div(mix, MMP_CLK_BITS_GET_VAL(mux_div, width, shift)); + + return parent_rate / div; +} + +static int mmp_clk_set_parent(struct clk_hw *hw, u8 index) +{ + struct mmp_clk_mix *mix = to_clk_mix(hw); + struct mmp_clk_mix_clk_table *item; + int i; + u32 div_val, mux_val; + + if (mix->table) { + for (i = 0; i < mix->table_size; i++) { + item = &mix->table[i]; + if (item->valid == 0) + continue; + if (item->parent_index == index) + break; + } + if (i < mix->table_size) { + div_val = _get_div_val(mix, item->divisor); + mux_val = _get_mux_val(mix, item->parent_index); + } else + return -EINVAL; + } else { + mux_val = _get_mux_val(mix, index); + div_val = 0; + } + + return _set_rate(mix, mux_val, div_val, 1, div_val ? 1 : 0); +} + +static int mmp_clk_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long best_parent_rate) +{ + struct mmp_clk_mix *mix = to_clk_mix(hw); + struct mmp_clk_mix_clk_table *item; + unsigned long parent_rate; + unsigned int best_divisor; + struct clk_hw *parent; + int i; + + best_divisor = best_parent_rate / rate; + + if (mix->table) { + for (i = 0; i < mix->table_size; i++) { + item = &mix->table[i]; + if (item->valid == 0) + continue; + parent = clk_hw_get_parent_by_index(hw, + item->parent_index); + parent_rate = clk_hw_get_rate(parent); + if (parent_rate == best_parent_rate + && item->divisor == best_divisor) + break; + } + if (i < mix->table_size) + return _set_rate(mix, + _get_mux_val(mix, item->parent_index), + _get_div_val(mix, item->divisor), + 1, 1); + else + return -EINVAL; + } else { + for (i = 0; i < clk_hw_get_num_parents(hw); i++) { + parent = clk_hw_get_parent_by_index(hw, i); + parent_rate = clk_hw_get_rate(parent); + if (parent_rate == best_parent_rate) + break; + } + if (i < clk_hw_get_num_parents(hw)) + return _set_rate(mix, _get_mux_val(mix, i), + _get_div_val(mix, best_divisor), 1, 1); + else + return -EINVAL; + } +} + +static int mmp_clk_mix_init(struct clk_hw *hw) +{ + struct mmp_clk_mix *mix = to_clk_mix(hw); + + if (mix->table) + _filter_clk_table(mix, mix->table, mix->table_size); + + return 0; +} + +const struct clk_ops mmp_clk_mix_ops = { + .determine_rate = mmp_clk_mix_determine_rate, + .set_rate_and_parent = mmp_clk_mix_set_rate_and_parent, + .set_rate = mmp_clk_set_rate, + .set_parent = mmp_clk_set_parent, + .get_parent = mmp_clk_mix_get_parent, + .recalc_rate = mmp_clk_mix_recalc_rate, + .init = mmp_clk_mix_init, +}; + +struct clk *mmp_clk_register_mix(struct device *dev, + const char *name, + const char * const *parent_names, + u8 num_parents, + unsigned long flags, + struct mmp_clk_mix_config *config, + spinlock_t *lock) +{ + struct mmp_clk_mix *mix; + struct clk *clk; + struct clk_init_data init; + size_t table_bytes; + + mix = kzalloc(sizeof(*mix), GFP_KERNEL); + if (!mix) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.flags = flags | CLK_GET_RATE_NOCACHE; + init.parent_names = parent_names; + init.num_parents = num_parents; + init.ops = &mmp_clk_mix_ops; + + memcpy(&mix->reg_info, &config->reg_info, sizeof(config->reg_info)); + if (config->table) { + table_bytes = sizeof(*config->table) * config->table_size; + mix->table = kmemdup(config->table, table_bytes, GFP_KERNEL); + if (!mix->table) + goto free_mix; + + mix->table_size = config->table_size; + } + + if (config->mux_table) { + table_bytes = sizeof(u32) * num_parents; + mix->mux_table = kmemdup(config->mux_table, table_bytes, + GFP_KERNEL); + if (!mix->mux_table) { + kfree(mix->table); + goto free_mix; + } + } + + mix->div_flags = config->div_flags; + mix->mux_flags = config->mux_flags; + mix->lock = lock; + mix->hw.init = &init; + + if (config->reg_info.bit_fc >= 32) + mix->type = MMP_CLK_MIX_TYPE_V1; + else if (config->reg_info.reg_clk_sel) + mix->type = MMP_CLK_MIX_TYPE_V3; + else + mix->type = MMP_CLK_MIX_TYPE_V2; + clk = clk_register(dev, &mix->hw); + + if (IS_ERR(clk)) { + kfree(mix->mux_table); + kfree(mix->table); + kfree(mix); + } + + return clk; + +free_mix: + kfree(mix); + return ERR_PTR(-ENOMEM); +} diff --git a/drivers/clk/mmp/clk-mmp2.c b/drivers/clk/mmp/clk-mmp2.c new file mode 100644 index 000000000..aabacfa10 --- /dev/null +++ b/drivers/clk/mmp/clk-mmp2.c @@ -0,0 +1,454 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * mmp2 clock framework source file + * + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + */ + +#include <linux/clk.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/clk/mmp.h> + +#include "clk.h" + +#define APBC_RTC 0x0 +#define APBC_TWSI0 0x4 +#define APBC_TWSI1 0x8 +#define APBC_TWSI2 0xc +#define APBC_TWSI3 0x10 +#define APBC_TWSI4 0x7c +#define APBC_TWSI5 0x80 +#define APBC_KPC 0x18 +#define APBC_UART0 0x2c +#define APBC_UART1 0x30 +#define APBC_UART2 0x34 +#define APBC_UART3 0x88 +#define APBC_GPIO 0x38 +#define APBC_PWM0 0x3c +#define APBC_PWM1 0x40 +#define APBC_PWM2 0x44 +#define APBC_PWM3 0x48 +#define APBC_SSP0 0x50 +#define APBC_SSP1 0x54 +#define APBC_SSP2 0x58 +#define APBC_SSP3 0x5c +#define APMU_SDH0 0x54 +#define APMU_SDH1 0x58 +#define APMU_SDH2 0xe8 +#define APMU_SDH3 0xec +#define APMU_USB 0x5c +#define APMU_DISP0 0x4c +#define APMU_DISP1 0x110 +#define APMU_CCIC0 0x50 +#define APMU_CCIC1 0xf4 +#define MPMU_UART_PLL 0x14 + +static DEFINE_SPINLOCK(clk_lock); + +static struct mmp_clk_factor_masks uart_factor_masks = { + .factor = 2, + .num_mask = 0x1fff, + .den_mask = 0x1fff, + .num_shift = 16, + .den_shift = 0, +}; + +static struct mmp_clk_factor_tbl uart_factor_tbl[] = { + {.num = 8125, .den = 1536}, /*14.745MHZ */ + {.num = 3521, .den = 689}, /*19.23MHZ */ +}; + +static const char *uart_parent[] = {"uart_pll", "vctcxo"}; +static const char *ssp_parent[] = {"vctcxo_4", "vctcxo_2", "vctcxo", "pll1_16"}; +static const char *sdh_parent[] = {"pll1_4", "pll2", "usb_pll", "pll1"}; +static const char *disp_parent[] = {"pll1", "pll1_16", "pll2", "vctcxo"}; +static const char *ccic_parent[] = {"pll1_2", "pll1_16", "vctcxo"}; + +void __init mmp2_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys, + phys_addr_t apbc_phys) +{ + struct clk *clk; + struct clk *vctcxo; + void __iomem *mpmu_base; + void __iomem *apmu_base; + void __iomem *apbc_base; + + mpmu_base = ioremap(mpmu_phys, SZ_4K); + if (!mpmu_base) { + pr_err("error to ioremap MPMU base\n"); + return; + } + + apmu_base = ioremap(apmu_phys, SZ_4K); + if (!apmu_base) { + pr_err("error to ioremap APMU base\n"); + return; + } + + apbc_base = ioremap(apbc_phys, SZ_4K); + if (!apbc_base) { + pr_err("error to ioremap APBC base\n"); + return; + } + + clk = clk_register_fixed_rate(NULL, "clk32", NULL, 0, 3200); + clk_register_clkdev(clk, "clk32", NULL); + + vctcxo = clk_register_fixed_rate(NULL, "vctcxo", NULL, 0, 26000000); + clk_register_clkdev(vctcxo, "vctcxo", NULL); + + clk = clk_register_fixed_rate(NULL, "pll1", NULL, 0, 800000000); + clk_register_clkdev(clk, "pll1", NULL); + + clk = clk_register_fixed_rate(NULL, "usb_pll", NULL, 0, 480000000); + clk_register_clkdev(clk, "usb_pll", NULL); + + clk = clk_register_fixed_rate(NULL, "pll2", NULL, 0, 960000000); + clk_register_clkdev(clk, "pll2", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_2", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_4", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_8", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_16", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_20", "pll1_4", + CLK_SET_RATE_PARENT, 1, 5); + clk_register_clkdev(clk, "pll1_20", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_3", "pll1", + CLK_SET_RATE_PARENT, 1, 3); + clk_register_clkdev(clk, "pll1_3", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_3", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_6", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_12", NULL); + + clk = clk_register_fixed_factor(NULL, "pll2_2", "pll2", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll2_2", NULL); + + clk = clk_register_fixed_factor(NULL, "pll2_4", "pll2_2", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll2_4", NULL); + + clk = clk_register_fixed_factor(NULL, "pll2_8", "pll2_4", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll2_8", NULL); + + clk = clk_register_fixed_factor(NULL, "pll2_16", "pll2_8", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll2_16", NULL); + + clk = clk_register_fixed_factor(NULL, "pll2_3", "pll2", + CLK_SET_RATE_PARENT, 1, 3); + clk_register_clkdev(clk, "pll2_3", NULL); + + clk = clk_register_fixed_factor(NULL, "pll2_6", "pll2_3", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll2_6", NULL); + + clk = clk_register_fixed_factor(NULL, "pll2_12", "pll2_6", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll2_12", NULL); + + clk = clk_register_fixed_factor(NULL, "vctcxo_2", "vctcxo", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "vctcxo_2", NULL); + + clk = clk_register_fixed_factor(NULL, "vctcxo_4", "vctcxo_2", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "vctcxo_4", NULL); + + clk = mmp_clk_register_factor("uart_pll", "pll1_4", 0, + mpmu_base + MPMU_UART_PLL, + &uart_factor_masks, uart_factor_tbl, + ARRAY_SIZE(uart_factor_tbl), &clk_lock); + clk_set_rate(clk, 14745600); + clk_register_clkdev(clk, "uart_pll", NULL); + + clk = mmp_clk_register_apbc("twsi0", "vctcxo", + apbc_base + APBC_TWSI0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0"); + + clk = mmp_clk_register_apbc("twsi1", "vctcxo", + apbc_base + APBC_TWSI1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1"); + + clk = mmp_clk_register_apbc("twsi2", "vctcxo", + apbc_base + APBC_TWSI2, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.2"); + + clk = mmp_clk_register_apbc("twsi3", "vctcxo", + apbc_base + APBC_TWSI3, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.3"); + + clk = mmp_clk_register_apbc("twsi4", "vctcxo", + apbc_base + APBC_TWSI4, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.4"); + + clk = mmp_clk_register_apbc("twsi5", "vctcxo", + apbc_base + APBC_TWSI5, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.5"); + + clk = mmp_clk_register_apbc("gpio", "vctcxo", + apbc_base + APBC_GPIO, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp2-gpio"); + + clk = mmp_clk_register_apbc("kpc", "clk32", + apbc_base + APBC_KPC, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa27x-keypad"); + + clk = mmp_clk_register_apbc("rtc", "clk32", + apbc_base + APBC_RTC, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-rtc"); + + clk = mmp_clk_register_apbc("pwm0", "vctcxo", + apbc_base + APBC_PWM0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp2-pwm.0"); + + clk = mmp_clk_register_apbc("pwm1", "vctcxo", + apbc_base + APBC_PWM1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp2-pwm.1"); + + clk = mmp_clk_register_apbc("pwm2", "vctcxo", + apbc_base + APBC_PWM2, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp2-pwm.2"); + + clk = mmp_clk_register_apbc("pwm3", "vctcxo", + apbc_base + APBC_PWM3, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp2-pwm.3"); + + clk = clk_register_mux(NULL, "uart0_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_UART0, 4, 3, 0, &clk_lock); + clk_set_parent(clk, vctcxo); + clk_register_clkdev(clk, "uart_mux.0", NULL); + + clk = mmp_clk_register_apbc("uart0", "uart0_mux", + apbc_base + APBC_UART0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.0"); + + clk = clk_register_mux(NULL, "uart1_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_UART1, 4, 3, 0, &clk_lock); + clk_set_parent(clk, vctcxo); + clk_register_clkdev(clk, "uart_mux.1", NULL); + + clk = mmp_clk_register_apbc("uart1", "uart1_mux", + apbc_base + APBC_UART1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.1"); + + clk = clk_register_mux(NULL, "uart2_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_UART2, 4, 3, 0, &clk_lock); + clk_set_parent(clk, vctcxo); + clk_register_clkdev(clk, "uart_mux.2", NULL); + + clk = mmp_clk_register_apbc("uart2", "uart2_mux", + apbc_base + APBC_UART2, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.2"); + + clk = clk_register_mux(NULL, "uart3_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_UART3, 4, 3, 0, &clk_lock); + clk_set_parent(clk, vctcxo); + clk_register_clkdev(clk, "uart_mux.3", NULL); + + clk = mmp_clk_register_apbc("uart3", "uart3_mux", + apbc_base + APBC_UART3, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.3"); + + clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "uart_mux.0", NULL); + + clk = mmp_clk_register_apbc("ssp0", "ssp0_mux", + apbc_base + APBC_SSP0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.0"); + + clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "ssp_mux.1", NULL); + + clk = mmp_clk_register_apbc("ssp1", "ssp1_mux", + apbc_base + APBC_SSP1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.1"); + + clk = clk_register_mux(NULL, "ssp2_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP2, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "ssp_mux.2", NULL); + + clk = mmp_clk_register_apbc("ssp2", "ssp2_mux", + apbc_base + APBC_SSP2, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.2"); + + clk = clk_register_mux(NULL, "ssp3_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP3, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "ssp_mux.3", NULL); + + clk = mmp_clk_register_apbc("ssp3", "ssp3_mux", + apbc_base + APBC_SSP3, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.3"); + + clk = clk_register_mux(NULL, "sdh_mux", sdh_parent, + ARRAY_SIZE(sdh_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_SDH0, 8, 2, 0, &clk_lock); + clk_register_clkdev(clk, "sdh_mux", NULL); + + clk = clk_register_divider(NULL, "sdh_div", "sdh_mux", + CLK_SET_RATE_PARENT, apmu_base + APMU_SDH0, + 10, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); + clk_register_clkdev(clk, "sdh_div", NULL); + + clk = mmp_clk_register_apmu("sdh0", "sdh_div", apmu_base + APMU_SDH0, + 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "sdhci-pxav3.0"); + + clk = mmp_clk_register_apmu("sdh1", "sdh_div", apmu_base + APMU_SDH1, + 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "sdhci-pxav3.1"); + + clk = mmp_clk_register_apmu("sdh2", "sdh_div", apmu_base + APMU_SDH2, + 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "sdhci-pxav3.2"); + + clk = mmp_clk_register_apmu("sdh3", "sdh_div", apmu_base + APMU_SDH3, + 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "sdhci-pxav3.3"); + + clk = mmp_clk_register_apmu("usb", "usb_pll", apmu_base + APMU_USB, + 0x9, &clk_lock); + clk_register_clkdev(clk, "usb_clk", NULL); + + clk = clk_register_mux(NULL, "disp0_mux", disp_parent, + ARRAY_SIZE(disp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_DISP0, 6, 2, 0, &clk_lock); + clk_register_clkdev(clk, "disp_mux.0", NULL); + + clk = clk_register_divider(NULL, "disp0_div", "disp0_mux", + CLK_SET_RATE_PARENT, apmu_base + APMU_DISP0, + 8, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); + clk_register_clkdev(clk, "disp_div.0", NULL); + + clk = mmp_clk_register_apmu("disp0", "disp0_div", + apmu_base + APMU_DISP0, 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-disp.0"); + + clk = clk_register_divider(NULL, "disp0_sphy_div", "disp0_mux", 0, + apmu_base + APMU_DISP0, 15, 5, 0, &clk_lock); + clk_register_clkdev(clk, "disp_sphy_div.0", NULL); + + clk = mmp_clk_register_apmu("disp0_sphy", "disp0_sphy_div", + apmu_base + APMU_DISP0, 0x1024, &clk_lock); + clk_register_clkdev(clk, "disp_sphy.0", NULL); + + clk = clk_register_mux(NULL, "disp1_mux", disp_parent, + ARRAY_SIZE(disp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_DISP1, 6, 2, 0, &clk_lock); + clk_register_clkdev(clk, "disp_mux.1", NULL); + + clk = clk_register_divider(NULL, "disp1_div", "disp1_mux", + CLK_SET_RATE_PARENT, apmu_base + APMU_DISP1, + 8, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); + clk_register_clkdev(clk, "disp_div.1", NULL); + + clk = mmp_clk_register_apmu("disp1", "disp1_div", + apmu_base + APMU_DISP1, 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-disp.1"); + + clk = mmp_clk_register_apmu("ccic_arbiter", "vctcxo", + apmu_base + APMU_CCIC0, 0x1800, &clk_lock); + clk_register_clkdev(clk, "ccic_arbiter", NULL); + + clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent, + ARRAY_SIZE(ccic_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_CCIC0, 6, 2, 0, &clk_lock); + clk_register_clkdev(clk, "ccic_mux.0", NULL); + + clk = clk_register_divider(NULL, "ccic0_div", "ccic0_mux", + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0, + 17, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); + clk_register_clkdev(clk, "ccic_div.0", NULL); + + clk = mmp_clk_register_apmu("ccic0", "ccic0_div", + apmu_base + APMU_CCIC0, 0x1b, &clk_lock); + clk_register_clkdev(clk, "fnclk", "mmp-ccic.0"); + + clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_div", + apmu_base + APMU_CCIC0, 0x24, &clk_lock); + clk_register_clkdev(clk, "phyclk", "mmp-ccic.0"); + + clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_div", + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0, + 10, 5, 0, &clk_lock); + clk_register_clkdev(clk, "sphyclk_div", "mmp-ccic.0"); + + clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div", + apmu_base + APMU_CCIC0, 0x300, &clk_lock); + clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0"); + + clk = clk_register_mux(NULL, "ccic1_mux", ccic_parent, + ARRAY_SIZE(ccic_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_CCIC1, 6, 2, 0, &clk_lock); + clk_register_clkdev(clk, "ccic_mux.1", NULL); + + clk = clk_register_divider(NULL, "ccic1_div", "ccic1_mux", + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC1, + 16, 4, CLK_DIVIDER_ONE_BASED, &clk_lock); + clk_register_clkdev(clk, "ccic_div.1", NULL); + + clk = mmp_clk_register_apmu("ccic1", "ccic1_div", + apmu_base + APMU_CCIC1, 0x1b, &clk_lock); + clk_register_clkdev(clk, "fnclk", "mmp-ccic.1"); + + clk = mmp_clk_register_apmu("ccic1_phy", "ccic1_div", + apmu_base + APMU_CCIC1, 0x24, &clk_lock); + clk_register_clkdev(clk, "phyclk", "mmp-ccic.1"); + + clk = clk_register_divider(NULL, "ccic1_sphy_div", "ccic1_div", + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC1, + 10, 5, 0, &clk_lock); + clk_register_clkdev(clk, "sphyclk_div", "mmp-ccic.1"); + + clk = mmp_clk_register_apmu("ccic1_sphy", "ccic1_sphy_div", + apmu_base + APMU_CCIC1, 0x300, &clk_lock); + clk_register_clkdev(clk, "sphyclk", "mmp-ccic.1"); +} diff --git a/drivers/clk/mmp/clk-of-mmp2.c b/drivers/clk/mmp/clk-of-mmp2.c new file mode 100644 index 000000000..bcf60f43a --- /dev/null +++ b/drivers/clk/mmp/clk-of-mmp2.c @@ -0,0 +1,567 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * mmp2 clock framework source file + * + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + * Copyright (C) 2020 Lubomir Rintel <lkundrak@v3.sk> + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/of_address.h> +#include <linux/clk.h> + +#include <dt-bindings/clock/marvell,mmp2.h> +#include <dt-bindings/power/marvell,mmp2.h> + +#include "clk.h" +#include "reset.h" + +#define APBC_RTC 0x0 +#define APBC_TWSI0 0x4 +#define APBC_TWSI1 0x8 +#define APBC_TWSI2 0xc +#define APBC_TWSI3 0x10 +#define APBC_TWSI4 0x7c +#define APBC_TWSI5 0x80 +#define APBC_KPC 0x18 +#define APBC_TIMER 0x24 +#define APBC_UART0 0x2c +#define APBC_UART1 0x30 +#define APBC_UART2 0x34 +#define APBC_UART3 0x88 +#define APBC_GPIO 0x38 +#define APBC_PWM0 0x3c +#define APBC_PWM1 0x40 +#define APBC_PWM2 0x44 +#define APBC_PWM3 0x48 +#define APBC_SSP0 0x50 +#define APBC_SSP1 0x54 +#define APBC_SSP2 0x58 +#define APBC_SSP3 0x5c +#define APBC_THERMAL0 0x90 +#define APBC_THERMAL1 0x98 +#define APBC_THERMAL2 0x9c +#define APBC_THERMAL3 0xa0 +#define APMU_SDH0 0x54 +#define APMU_SDH1 0x58 +#define APMU_SDH2 0xe8 +#define APMU_SDH3 0xec +#define APMU_SDH4 0x15c +#define APMU_USB 0x5c +#define APMU_DISP0 0x4c +#define APMU_DISP1 0x110 +#define APMU_CCIC0 0x50 +#define APMU_CCIC1 0xf4 +#define APMU_USBHSIC0 0xf8 +#define APMU_USBHSIC1 0xfc +#define APMU_GPU 0xcc +#define APMU_AUDIO 0x10c +#define APMU_CAMERA 0x1fc + +#define MPMU_FCCR 0x8 +#define MPMU_POSR 0x10 +#define MPMU_UART_PLL 0x14 +#define MPMU_PLL2_CR 0x34 +#define MPMU_I2S0_PLL 0x40 +#define MPMU_I2S1_PLL 0x44 +#define MPMU_ACGR 0x1024 +/* MMP3 specific below */ +#define MPMU_PLL3_CR 0x50 +#define MPMU_PLL3_CTRL1 0x58 +#define MPMU_PLL1_CTRL 0x5c +#define MPMU_PLL_DIFF_CTRL 0x68 +#define MPMU_PLL2_CTRL1 0x414 + +enum mmp2_clk_model { + CLK_MODEL_MMP2, + CLK_MODEL_MMP3, +}; + +struct mmp2_clk_unit { + struct mmp_clk_unit unit; + enum mmp2_clk_model model; + struct genpd_onecell_data pd_data; + struct generic_pm_domain *pm_domains[MMP2_NR_POWER_DOMAINS]; + void __iomem *mpmu_base; + void __iomem *apmu_base; + void __iomem *apbc_base; +}; + +static struct mmp_param_fixed_rate_clk fixed_rate_clks[] = { + {MMP2_CLK_CLK32, "clk32", NULL, 0, 32768}, + {MMP2_CLK_VCTCXO, "vctcxo", NULL, 0, 26000000}, + {MMP2_CLK_USB_PLL, "usb_pll", NULL, 0, 480000000}, + {0, "i2s_pll", NULL, 0, 99666667}, +}; + +static struct mmp_param_pll_clk pll_clks[] = { + {MMP2_CLK_PLL1, "pll1", 797330000, MPMU_FCCR, 0x4000, MPMU_POSR, 0}, + {MMP2_CLK_PLL2, "pll2", 0, MPMU_PLL2_CR, 0x0300, MPMU_PLL2_CR, 10}, +}; + +static struct mmp_param_pll_clk mmp3_pll_clks[] = { + {MMP2_CLK_PLL2, "pll1", 797330000, MPMU_FCCR, 0x4000, MPMU_POSR, 0, 26000000, MPMU_PLL1_CTRL, 25}, + {MMP2_CLK_PLL2, "pll2", 0, MPMU_PLL2_CR, 0x0300, MPMU_PLL2_CR, 10, 26000000, MPMU_PLL2_CTRL1, 25}, + {MMP3_CLK_PLL1_P, "pll1_p", 0, MPMU_PLL_DIFF_CTRL, 0x0010, 0, 0, 797330000, MPMU_PLL_DIFF_CTRL, 0}, + {MMP3_CLK_PLL2_P, "pll2_p", 0, MPMU_PLL_DIFF_CTRL, 0x0100, MPMU_PLL2_CR, 10, 26000000, MPMU_PLL_DIFF_CTRL, 5}, + {MMP3_CLK_PLL3, "pll3", 0, MPMU_PLL3_CR, 0x0300, MPMU_PLL3_CR, 10, 26000000, MPMU_PLL3_CTRL1, 25}, +}; + +static struct mmp_param_fixed_factor_clk fixed_factor_clks[] = { + {MMP2_CLK_PLL1_2, "pll1_2", "pll1", 1, 2, 0}, + {MMP2_CLK_PLL1_4, "pll1_4", "pll1_2", 1, 2, 0}, + {MMP2_CLK_PLL1_8, "pll1_8", "pll1_4", 1, 2, 0}, + {MMP2_CLK_PLL1_16, "pll1_16", "pll1_8", 1, 2, 0}, + {MMP2_CLK_PLL1_20, "pll1_20", "pll1_4", 1, 5, 0}, + {MMP2_CLK_PLL1_3, "pll1_3", "pll1", 1, 3, 0}, + {MMP2_CLK_PLL1_6, "pll1_6", "pll1_3", 1, 2, 0}, + {MMP2_CLK_PLL1_12, "pll1_12", "pll1_6", 1, 2, 0}, + {MMP2_CLK_PLL2_2, "pll2_2", "pll2", 1, 2, 0}, + {MMP2_CLK_PLL2_4, "pll2_4", "pll2_2", 1, 2, 0}, + {MMP2_CLK_PLL2_8, "pll2_8", "pll2_4", 1, 2, 0}, + {MMP2_CLK_PLL2_16, "pll2_16", "pll2_8", 1, 2, 0}, + {MMP2_CLK_PLL2_3, "pll2_3", "pll2", 1, 3, 0}, + {MMP2_CLK_PLL2_6, "pll2_6", "pll2_3", 1, 2, 0}, + {MMP2_CLK_PLL2_12, "pll2_12", "pll2_6", 1, 2, 0}, + {MMP2_CLK_VCTCXO_2, "vctcxo_2", "vctcxo", 1, 2, 0}, + {MMP2_CLK_VCTCXO_4, "vctcxo_4", "vctcxo_2", 1, 2, 0}, +}; + +static struct mmp_clk_factor_masks uart_factor_masks = { + .factor = 2, + .num_mask = 0x1fff, + .den_mask = 0x1fff, + .num_shift = 16, + .den_shift = 0, +}; + +static struct mmp_clk_factor_tbl uart_factor_tbl[] = { + {.num = 8125, .den = 1536}, /*14.745MHZ */ + {.num = 3521, .den = 689}, /*19.23MHZ */ +}; + +static struct mmp_clk_factor_masks i2s_factor_masks = { + .factor = 2, + .num_mask = 0x7fff, + .den_mask = 0x1fff, + .num_shift = 0, + .den_shift = 15, + .enable_mask = 0xd0000000, +}; + +static struct mmp_clk_factor_tbl i2s_factor_tbl[] = { + {.num = 24868, .den = 511}, /* 2.0480 MHz */ + {.num = 28003, .den = 793}, /* 2.8224 MHz */ + {.num = 24941, .den = 1025}, /* 4.0960 MHz */ + {.num = 28003, .den = 1586}, /* 5.6448 MHz */ + {.num = 31158, .den = 2561}, /* 8.1920 MHz */ + {.num = 16288, .den = 1845}, /* 11.2896 MHz */ + {.num = 20772, .den = 2561}, /* 12.2880 MHz */ + {.num = 8144, .den = 1845}, /* 22.5792 MHz */ + {.num = 10386, .den = 2561}, /* 24.5760 MHz */ +}; + +static DEFINE_SPINLOCK(acgr_lock); + +static struct mmp_param_gate_clk mpmu_gate_clks[] = { + {MMP2_CLK_I2S0, "i2s0_clk", "i2s0_pll", CLK_SET_RATE_PARENT, MPMU_ACGR, 0x200000, 0x200000, 0x0, 0, &acgr_lock}, + {MMP2_CLK_I2S1, "i2s1_clk", "i2s1_pll", CLK_SET_RATE_PARENT, MPMU_ACGR, 0x100000, 0x100000, 0x0, 0, &acgr_lock}, +}; + +static void mmp2_main_clk_init(struct mmp2_clk_unit *pxa_unit) +{ + struct clk *clk; + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_fixed_rate_clks(unit, fixed_rate_clks, + ARRAY_SIZE(fixed_rate_clks)); + + if (pxa_unit->model == CLK_MODEL_MMP3) { + mmp_register_pll_clks(unit, mmp3_pll_clks, + pxa_unit->mpmu_base, + ARRAY_SIZE(mmp3_pll_clks)); + } else { + mmp_register_pll_clks(unit, pll_clks, + pxa_unit->mpmu_base, + ARRAY_SIZE(pll_clks)); + } + + mmp_register_fixed_factor_clks(unit, fixed_factor_clks, + ARRAY_SIZE(fixed_factor_clks)); + + clk = mmp_clk_register_factor("uart_pll", "pll1_4", + CLK_SET_RATE_PARENT, + pxa_unit->mpmu_base + MPMU_UART_PLL, + &uart_factor_masks, uart_factor_tbl, + ARRAY_SIZE(uart_factor_tbl), NULL); + mmp_clk_add(unit, MMP2_CLK_UART_PLL, clk); + + mmp_clk_register_factor("i2s0_pll", "pll1_4", + CLK_SET_RATE_PARENT, + pxa_unit->mpmu_base + MPMU_I2S0_PLL, + &i2s_factor_masks, i2s_factor_tbl, + ARRAY_SIZE(i2s_factor_tbl), NULL); + mmp_clk_register_factor("i2s1_pll", "pll1_4", + CLK_SET_RATE_PARENT, + pxa_unit->mpmu_base + MPMU_I2S1_PLL, + &i2s_factor_masks, i2s_factor_tbl, + ARRAY_SIZE(i2s_factor_tbl), NULL); + + mmp_register_gate_clks(unit, mpmu_gate_clks, pxa_unit->mpmu_base, + ARRAY_SIZE(mpmu_gate_clks)); +} + +static DEFINE_SPINLOCK(uart0_lock); +static DEFINE_SPINLOCK(uart1_lock); +static DEFINE_SPINLOCK(uart2_lock); +static const char * const uart_parent_names[] = {"uart_pll", "vctcxo"}; + +static DEFINE_SPINLOCK(ssp0_lock); +static DEFINE_SPINLOCK(ssp1_lock); +static DEFINE_SPINLOCK(ssp2_lock); +static DEFINE_SPINLOCK(ssp3_lock); +static const char * const ssp_parent_names[] = {"vctcxo_4", "vctcxo_2", "vctcxo", "pll1_16"}; + +static DEFINE_SPINLOCK(timer_lock); +static const char * const timer_parent_names[] = {"clk32", "vctcxo_4", "vctcxo_2", "vctcxo"}; + +static DEFINE_SPINLOCK(reset_lock); + +static struct mmp_param_mux_clk apbc_mux_clks[] = { + {0, "uart0_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART0, 4, 3, 0, &uart0_lock}, + {0, "uart1_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART1, 4, 3, 0, &uart1_lock}, + {0, "uart2_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART2, 4, 3, 0, &uart2_lock}, + {0, "uart3_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART3, 4, 3, 0, &uart2_lock}, + {0, "ssp0_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP0, 4, 3, 0, &ssp0_lock}, + {0, "ssp1_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP1, 4, 3, 0, &ssp1_lock}, + {0, "ssp2_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP2, 4, 3, 0, &ssp2_lock}, + {0, "ssp3_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP3, 4, 3, 0, &ssp3_lock}, + {0, "timer_mux", timer_parent_names, ARRAY_SIZE(timer_parent_names), CLK_SET_RATE_PARENT, APBC_TIMER, 4, 3, 0, &timer_lock}, +}; + +static struct mmp_param_gate_clk apbc_gate_clks[] = { + {MMP2_CLK_TWSI0, "twsi0_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_TWSI0, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_TWSI1, "twsi1_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_TWSI1, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_TWSI2, "twsi2_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_TWSI2, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_TWSI3, "twsi3_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_TWSI3, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_TWSI4, "twsi4_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_TWSI4, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_TWSI5, "twsi5_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_TWSI5, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_GPIO, "gpio_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_GPIO, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_KPC, "kpc_clk", "clk32", CLK_SET_RATE_PARENT, APBC_KPC, 0x7, 0x3, 0x0, MMP_CLK_GATE_NEED_DELAY, &reset_lock}, + {MMP2_CLK_RTC, "rtc_clk", "clk32", CLK_SET_RATE_PARENT, APBC_RTC, 0x87, 0x83, 0x0, MMP_CLK_GATE_NEED_DELAY, &reset_lock}, + {MMP2_CLK_PWM0, "pwm0_clk", "pll1_48", CLK_SET_RATE_PARENT, APBC_PWM0, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_PWM1, "pwm1_clk", "pll1_48", CLK_SET_RATE_PARENT, APBC_PWM1, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_PWM2, "pwm2_clk", "pll1_48", CLK_SET_RATE_PARENT, APBC_PWM2, 0x7, 0x3, 0x0, 0, &reset_lock}, + {MMP2_CLK_PWM3, "pwm3_clk", "pll1_48", CLK_SET_RATE_PARENT, APBC_PWM3, 0x7, 0x3, 0x0, 0, &reset_lock}, + /* The gate clocks has mux parent. */ + {MMP2_CLK_UART0, "uart0_clk", "uart0_mux", CLK_SET_RATE_PARENT, APBC_UART0, 0x7, 0x3, 0x0, 0, &uart0_lock}, + {MMP2_CLK_UART1, "uart1_clk", "uart1_mux", CLK_SET_RATE_PARENT, APBC_UART1, 0x7, 0x3, 0x0, 0, &uart1_lock}, + {MMP2_CLK_UART2, "uart2_clk", "uart2_mux", CLK_SET_RATE_PARENT, APBC_UART2, 0x7, 0x3, 0x0, 0, &uart2_lock}, + {MMP2_CLK_UART3, "uart3_clk", "uart3_mux", CLK_SET_RATE_PARENT, APBC_UART3, 0x7, 0x3, 0x0, 0, &uart2_lock}, + {MMP2_CLK_SSP0, "ssp0_clk", "ssp0_mux", CLK_SET_RATE_PARENT, APBC_SSP0, 0x7, 0x3, 0x0, 0, &ssp0_lock}, + {MMP2_CLK_SSP1, "ssp1_clk", "ssp1_mux", CLK_SET_RATE_PARENT, APBC_SSP1, 0x7, 0x3, 0x0, 0, &ssp1_lock}, + {MMP2_CLK_SSP2, "ssp2_clk", "ssp2_mux", CLK_SET_RATE_PARENT, APBC_SSP2, 0x7, 0x3, 0x0, 0, &ssp2_lock}, + {MMP2_CLK_SSP3, "ssp3_clk", "ssp3_mux", CLK_SET_RATE_PARENT, APBC_SSP3, 0x7, 0x3, 0x0, 0, &ssp3_lock}, + {MMP2_CLK_TIMER, "timer_clk", "timer_mux", CLK_SET_RATE_PARENT, APBC_TIMER, 0x7, 0x3, 0x0, 0, &timer_lock}, + {MMP2_CLK_THERMAL0, "thermal0_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_THERMAL0, 0x7, 0x3, 0x0, MMP_CLK_GATE_NEED_DELAY, &reset_lock}, +}; + +static struct mmp_param_gate_clk mmp3_apbc_gate_clks[] = { + {MMP3_CLK_THERMAL1, "thermal1_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_THERMAL1, 0x7, 0x3, 0x0, MMP_CLK_GATE_NEED_DELAY, &reset_lock}, + {MMP3_CLK_THERMAL2, "thermal2_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_THERMAL2, 0x7, 0x3, 0x0, MMP_CLK_GATE_NEED_DELAY, &reset_lock}, + {MMP3_CLK_THERMAL3, "thermal3_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_THERMAL3, 0x7, 0x3, 0x0, MMP_CLK_GATE_NEED_DELAY, &reset_lock}, +}; + +static void mmp2_apb_periph_clk_init(struct mmp2_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_mux_clks(unit, apbc_mux_clks, pxa_unit->apbc_base, + ARRAY_SIZE(apbc_mux_clks)); + + mmp_register_gate_clks(unit, apbc_gate_clks, pxa_unit->apbc_base, + ARRAY_SIZE(apbc_gate_clks)); + + if (pxa_unit->model == CLK_MODEL_MMP3) { + mmp_register_gate_clks(unit, mmp3_apbc_gate_clks, pxa_unit->apbc_base, + ARRAY_SIZE(mmp3_apbc_gate_clks)); + } +} + +static DEFINE_SPINLOCK(sdh_lock); +static const char * const sdh_parent_names[] = {"pll1_4", "pll2", "usb_pll", "pll1"}; +static struct mmp_clk_mix_config sdh_mix_config = { + .reg_info = DEFINE_MIX_REG_INFO(4, 10, 2, 8, 32), +}; + +static DEFINE_SPINLOCK(usb_lock); +static DEFINE_SPINLOCK(usbhsic0_lock); +static DEFINE_SPINLOCK(usbhsic1_lock); + +static DEFINE_SPINLOCK(disp0_lock); +static DEFINE_SPINLOCK(disp1_lock); +static const char * const disp_parent_names[] = {"pll1", "pll1_16", "pll2", "vctcxo"}; + +static DEFINE_SPINLOCK(ccic0_lock); +static DEFINE_SPINLOCK(ccic1_lock); +static const char * const ccic_parent_names[] = {"pll1_2", "pll1_16", "vctcxo"}; + +static DEFINE_SPINLOCK(gpu_lock); +static const char * const mmp2_gpu_gc_parent_names[] = {"pll1_2", "pll1_3", "pll2_2", "pll2_3", "pll2", "usb_pll"}; +static const u32 mmp2_gpu_gc_parent_table[] = { 0x0000, 0x0040, 0x0080, 0x00c0, 0x1000, 0x1040 }; +static const char * const mmp2_gpu_bus_parent_names[] = {"pll1_4", "pll2", "pll2_2", "usb_pll"}; +static const u32 mmp2_gpu_bus_parent_table[] = { 0x0000, 0x0020, 0x0030, 0x4020 }; +static const char * const mmp3_gpu_bus_parent_names[] = {"pll1_4", "pll1_6", "pll1_2", "pll2_2"}; +static const char * const mmp3_gpu_gc_parent_names[] = {"pll1", "pll2", "pll1_p", "pll2_p"}; + +static DEFINE_SPINLOCK(audio_lock); + +static struct mmp_clk_mix_config ccic0_mix_config = { + .reg_info = DEFINE_MIX_REG_INFO(4, 17, 2, 6, 32), +}; +static struct mmp_clk_mix_config ccic1_mix_config = { + .reg_info = DEFINE_MIX_REG_INFO(4, 16, 2, 6, 32), +}; + +static struct mmp_param_mux_clk apmu_mux_clks[] = { + {MMP2_CLK_DISP0_MUX, "disp0_mux", disp_parent_names, ARRAY_SIZE(disp_parent_names), CLK_SET_RATE_PARENT, APMU_DISP0, 6, 2, 0, &disp0_lock}, + {MMP2_CLK_DISP1_MUX, "disp1_mux", disp_parent_names, ARRAY_SIZE(disp_parent_names), CLK_SET_RATE_PARENT, APMU_DISP1, 6, 2, 0, &disp1_lock}, +}; + +static struct mmp_param_mux_clk mmp3_apmu_mux_clks[] = { + {0, "gpu_bus_mux", mmp3_gpu_bus_parent_names, ARRAY_SIZE(mmp3_gpu_bus_parent_names), + CLK_SET_RATE_PARENT, APMU_GPU, 4, 2, 0, &gpu_lock}, + {0, "gpu_3d_mux", mmp3_gpu_gc_parent_names, ARRAY_SIZE(mmp3_gpu_gc_parent_names), + CLK_SET_RATE_PARENT, APMU_GPU, 6, 2, 0, &gpu_lock}, + {0, "gpu_2d_mux", mmp3_gpu_gc_parent_names, ARRAY_SIZE(mmp3_gpu_gc_parent_names), + CLK_SET_RATE_PARENT, APMU_GPU, 12, 2, 0, &gpu_lock}, +}; + +static struct mmp_param_div_clk apmu_div_clks[] = { + {0, "disp0_div", "disp0_mux", CLK_SET_RATE_PARENT, APMU_DISP0, 8, 4, CLK_DIVIDER_ONE_BASED, &disp0_lock}, + {0, "disp0_sphy_div", "disp0_mux", CLK_SET_RATE_PARENT, APMU_DISP0, 15, 5, 0, &disp0_lock}, + {0, "disp1_div", "disp1_mux", CLK_SET_RATE_PARENT, APMU_DISP1, 8, 4, CLK_DIVIDER_ONE_BASED, &disp1_lock}, + {0, "ccic0_sphy_div", "ccic0_mix_clk", CLK_SET_RATE_PARENT, APMU_CCIC0, 10, 5, 0, &ccic0_lock}, + {0, "ccic1_sphy_div", "ccic1_mix_clk", CLK_SET_RATE_PARENT, APMU_CCIC1, 10, 5, 0, &ccic1_lock}, +}; + +static struct mmp_param_div_clk mmp3_apmu_div_clks[] = { + {0, "gpu_3d_div", "gpu_3d_mux", CLK_SET_RATE_PARENT, APMU_GPU, 24, 4, 0, &gpu_lock}, + {0, "gpu_2d_div", "gpu_2d_mux", CLK_SET_RATE_PARENT, APMU_GPU, 28, 4, 0, &gpu_lock}, +}; + +static struct mmp_param_gate_clk apmu_gate_clks[] = { + {MMP2_CLK_USB, "usb_clk", "usb_pll", 0, APMU_USB, 0x9, 0x9, 0x0, 0, &usb_lock}, + {MMP2_CLK_USBHSIC0, "usbhsic0_clk", "usb_pll", 0, APMU_USBHSIC0, 0x1b, 0x1b, 0x0, 0, &usbhsic0_lock}, + {MMP2_CLK_USBHSIC1, "usbhsic1_clk", "usb_pll", 0, APMU_USBHSIC1, 0x1b, 0x1b, 0x0, 0, &usbhsic1_lock}, + /* The gate clocks has mux parent. */ + {MMP2_CLK_SDH0, "sdh0_clk", "sdh_mix_clk", CLK_SET_RATE_PARENT, APMU_SDH0, 0x1b, 0x1b, 0x0, 0, &sdh_lock}, + {MMP2_CLK_SDH1, "sdh1_clk", "sdh_mix_clk", CLK_SET_RATE_PARENT, APMU_SDH1, 0x1b, 0x1b, 0x0, 0, &sdh_lock}, + {MMP2_CLK_SDH2, "sdh2_clk", "sdh_mix_clk", CLK_SET_RATE_PARENT, APMU_SDH2, 0x1b, 0x1b, 0x0, 0, &sdh_lock}, + {MMP2_CLK_SDH3, "sdh3_clk", "sdh_mix_clk", CLK_SET_RATE_PARENT, APMU_SDH3, 0x1b, 0x1b, 0x0, 0, &sdh_lock}, + {MMP2_CLK_DISP0, "disp0_clk", "disp0_div", CLK_SET_RATE_PARENT, APMU_DISP0, 0x12, 0x12, 0x0, 0, &disp0_lock}, + {MMP2_CLK_DISP0_LCDC, "disp0_lcdc_clk", "disp0_mux", CLK_SET_RATE_PARENT, APMU_DISP0, 0x09, 0x09, 0x0, 0, &disp0_lock}, + {MMP2_CLK_DISP0_SPHY, "disp0_sphy_clk", "disp0_sphy_div", CLK_SET_RATE_PARENT, APMU_DISP0, 0x1024, 0x1024, 0x0, 0, &disp0_lock}, + {MMP2_CLK_DISP1, "disp1_clk", "disp1_div", CLK_SET_RATE_PARENT, APMU_DISP1, 0x09, 0x09, 0x0, 0, &disp1_lock}, + {MMP2_CLK_CCIC_ARBITER, "ccic_arbiter", "vctcxo", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x1800, 0x1800, 0x0, 0, &ccic0_lock}, + {MMP2_CLK_CCIC0, "ccic0_clk", "ccic0_mix_clk", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x1b, 0x1b, 0x0, 0, &ccic0_lock}, + {MMP2_CLK_CCIC0_PHY, "ccic0_phy_clk", "ccic0_mix_clk", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x24, 0x24, 0x0, 0, &ccic0_lock}, + {MMP2_CLK_CCIC0_SPHY, "ccic0_sphy_clk", "ccic0_sphy_div", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x300, 0x300, 0x0, 0, &ccic0_lock}, + {MMP2_CLK_CCIC1, "ccic1_clk", "ccic1_mix_clk", CLK_SET_RATE_PARENT, APMU_CCIC1, 0x1b, 0x1b, 0x0, 0, &ccic1_lock}, + {MMP2_CLK_CCIC1_PHY, "ccic1_phy_clk", "ccic1_mix_clk", CLK_SET_RATE_PARENT, APMU_CCIC1, 0x24, 0x24, 0x0, 0, &ccic1_lock}, + {MMP2_CLK_CCIC1_SPHY, "ccic1_sphy_clk", "ccic1_sphy_div", CLK_SET_RATE_PARENT, APMU_CCIC1, 0x300, 0x300, 0x0, 0, &ccic1_lock}, + {MMP2_CLK_GPU_BUS, "gpu_bus_clk", "gpu_bus_mux", CLK_SET_RATE_PARENT, APMU_GPU, 0xa, 0xa, 0x0, MMP_CLK_GATE_NEED_DELAY, &gpu_lock}, + {MMP2_CLK_AUDIO, "audio_clk", "audio_mix_clk", CLK_SET_RATE_PARENT, APMU_AUDIO, 0x12, 0x12, 0x0, 0, &audio_lock}, +}; + +static struct mmp_param_gate_clk mmp2_apmu_gate_clks[] = { + {MMP2_CLK_GPU_3D, "gpu_3d_clk", "gpu_3d_mux", CLK_SET_RATE_PARENT, APMU_GPU, 0x5, 0x5, 0x0, MMP_CLK_GATE_NEED_DELAY, &gpu_lock}, +}; + +static struct mmp_param_gate_clk mmp3_apmu_gate_clks[] = { + {MMP3_CLK_SDH4, "sdh4_clk", "sdh_mix_clk", CLK_SET_RATE_PARENT, APMU_SDH4, 0x1b, 0x1b, 0x0, 0, &sdh_lock}, + {MMP3_CLK_GPU_3D, "gpu_3d_clk", "gpu_3d_div", CLK_SET_RATE_PARENT, APMU_GPU, 0x5, 0x5, 0x0, MMP_CLK_GATE_NEED_DELAY, &gpu_lock}, + {MMP3_CLK_GPU_2D, "gpu_2d_clk", "gpu_2d_div", CLK_SET_RATE_PARENT, APMU_GPU, 0x1c0000, 0x1c0000, 0x0, MMP_CLK_GATE_NEED_DELAY, &gpu_lock}, +}; + +static void mmp2_axi_periph_clk_init(struct mmp2_clk_unit *pxa_unit) +{ + struct clk *clk; + struct mmp_clk_unit *unit = &pxa_unit->unit; + + sdh_mix_config.reg_info.reg_clk_ctrl = pxa_unit->apmu_base + APMU_SDH0; + clk = mmp_clk_register_mix(NULL, "sdh_mix_clk", sdh_parent_names, + ARRAY_SIZE(sdh_parent_names), + CLK_SET_RATE_PARENT, + &sdh_mix_config, &sdh_lock); + + ccic0_mix_config.reg_info.reg_clk_ctrl = pxa_unit->apmu_base + APMU_CCIC0; + clk = mmp_clk_register_mix(NULL, "ccic0_mix_clk", ccic_parent_names, + ARRAY_SIZE(ccic_parent_names), + CLK_SET_RATE_PARENT, + &ccic0_mix_config, &ccic0_lock); + mmp_clk_add(unit, MMP2_CLK_CCIC0_MIX, clk); + + ccic1_mix_config.reg_info.reg_clk_ctrl = pxa_unit->apmu_base + APMU_CCIC1; + clk = mmp_clk_register_mix(NULL, "ccic1_mix_clk", ccic_parent_names, + ARRAY_SIZE(ccic_parent_names), + CLK_SET_RATE_PARENT, + &ccic1_mix_config, &ccic1_lock); + mmp_clk_add(unit, MMP2_CLK_CCIC1_MIX, clk); + + mmp_register_mux_clks(unit, apmu_mux_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_mux_clks)); + + mmp_register_div_clks(unit, apmu_div_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_div_clks)); + + mmp_register_gate_clks(unit, apmu_gate_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_gate_clks)); + + if (pxa_unit->model == CLK_MODEL_MMP3) { + mmp_register_mux_clks(unit, mmp3_apmu_mux_clks, pxa_unit->apmu_base, + ARRAY_SIZE(mmp3_apmu_mux_clks)); + + mmp_register_div_clks(unit, mmp3_apmu_div_clks, pxa_unit->apmu_base, + ARRAY_SIZE(mmp3_apmu_div_clks)); + + mmp_register_gate_clks(unit, mmp3_apmu_gate_clks, pxa_unit->apmu_base, + ARRAY_SIZE(mmp3_apmu_gate_clks)); + } else { + clk_register_mux_table(NULL, "gpu_3d_mux", mmp2_gpu_gc_parent_names, + ARRAY_SIZE(mmp2_gpu_gc_parent_names), + CLK_SET_RATE_PARENT, + pxa_unit->apmu_base + APMU_GPU, + 0, 0x10c0, 0, + mmp2_gpu_gc_parent_table, &gpu_lock); + + clk_register_mux_table(NULL, "gpu_bus_mux", mmp2_gpu_bus_parent_names, + ARRAY_SIZE(mmp2_gpu_bus_parent_names), + CLK_SET_RATE_PARENT, + pxa_unit->apmu_base + APMU_GPU, + 0, 0x4030, 0, + mmp2_gpu_bus_parent_table, &gpu_lock); + + mmp_register_gate_clks(unit, mmp2_apmu_gate_clks, pxa_unit->apmu_base, + ARRAY_SIZE(mmp2_apmu_gate_clks)); + } +} + +static void mmp2_clk_reset_init(struct device_node *np, + struct mmp2_clk_unit *pxa_unit) +{ + struct mmp_clk_reset_cell *cells; + int i, nr_resets; + + nr_resets = ARRAY_SIZE(apbc_gate_clks); + cells = kcalloc(nr_resets, sizeof(*cells), GFP_KERNEL); + if (!cells) + return; + + for (i = 0; i < nr_resets; i++) { + cells[i].clk_id = apbc_gate_clks[i].id; + cells[i].reg = pxa_unit->apbc_base + apbc_gate_clks[i].offset; + cells[i].flags = 0; + cells[i].lock = apbc_gate_clks[i].lock; + cells[i].bits = 0x4; + } + + mmp_clk_reset_register(np, cells, nr_resets); +} + +static void mmp2_pm_domain_init(struct device_node *np, + struct mmp2_clk_unit *pxa_unit) +{ + if (pxa_unit->model == CLK_MODEL_MMP3) { + pxa_unit->pm_domains[MMP2_POWER_DOMAIN_GPU] + = mmp_pm_domain_register("gpu", + pxa_unit->apmu_base + APMU_GPU, + 0x0600, 0x40003, 0x18000c, 0, &gpu_lock); + } else { + pxa_unit->pm_domains[MMP2_POWER_DOMAIN_GPU] + = mmp_pm_domain_register("gpu", + pxa_unit->apmu_base + APMU_GPU, + 0x8600, 0x00003, 0x00000c, + MMP_PM_DOMAIN_NO_DISABLE, &gpu_lock); + } + pxa_unit->pd_data.num_domains++; + + pxa_unit->pm_domains[MMP2_POWER_DOMAIN_AUDIO] + = mmp_pm_domain_register("audio", + pxa_unit->apmu_base + APMU_AUDIO, + 0x600, 0x2, 0, 0, &audio_lock); + pxa_unit->pd_data.num_domains++; + + if (pxa_unit->model == CLK_MODEL_MMP3) { + pxa_unit->pm_domains[MMP3_POWER_DOMAIN_CAMERA] + = mmp_pm_domain_register("camera", + pxa_unit->apmu_base + APMU_CAMERA, + 0x600, 0, 0, 0, NULL); + pxa_unit->pd_data.num_domains++; + } + + pxa_unit->pd_data.domains = pxa_unit->pm_domains; + of_genpd_add_provider_onecell(np, &pxa_unit->pd_data); +} + +static void __init mmp2_clk_init(struct device_node *np) +{ + struct mmp2_clk_unit *pxa_unit; + + pxa_unit = kzalloc(sizeof(*pxa_unit), GFP_KERNEL); + if (!pxa_unit) + return; + + if (of_device_is_compatible(np, "marvell,mmp3-clock")) + pxa_unit->model = CLK_MODEL_MMP3; + else + pxa_unit->model = CLK_MODEL_MMP2; + + pxa_unit->mpmu_base = of_iomap(np, 0); + if (!pxa_unit->mpmu_base) { + pr_err("failed to map mpmu registers\n"); + goto free_memory; + } + + pxa_unit->apmu_base = of_iomap(np, 1); + if (!pxa_unit->apmu_base) { + pr_err("failed to map apmu registers\n"); + goto unmap_mpmu_region; + } + + pxa_unit->apbc_base = of_iomap(np, 2); + if (!pxa_unit->apbc_base) { + pr_err("failed to map apbc registers\n"); + goto unmap_apmu_region; + } + + mmp2_pm_domain_init(np, pxa_unit); + + mmp_clk_init(np, &pxa_unit->unit, MMP2_NR_CLKS); + + mmp2_main_clk_init(pxa_unit); + + mmp2_apb_periph_clk_init(pxa_unit); + + mmp2_axi_periph_clk_init(pxa_unit); + + mmp2_clk_reset_init(np, pxa_unit); + + return; + +unmap_apmu_region: + iounmap(pxa_unit->apmu_base); +unmap_mpmu_region: + iounmap(pxa_unit->mpmu_base); +free_memory: + kfree(pxa_unit); +} + +CLK_OF_DECLARE(mmp2_clk, "marvell,mmp2-clock", mmp2_clk_init); +CLK_OF_DECLARE(mmp3_clk, "marvell,mmp3-clock", mmp2_clk_init); diff --git a/drivers/clk/mmp/clk-of-pxa168.c b/drivers/clk/mmp/clk-of-pxa168.c new file mode 100644 index 000000000..130d1a723 --- /dev/null +++ b/drivers/clk/mmp/clk-of-pxa168.c @@ -0,0 +1,335 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * pxa168 clock framework source file + * + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/of_address.h> + +#include <dt-bindings/clock/marvell,pxa168.h> + +#include "clk.h" +#include "reset.h" + +#define APBC_UART0 0x0 +#define APBC_UART1 0x4 +#define APBC_GPIO 0x8 +#define APBC_PWM0 0xc +#define APBC_PWM1 0x10 +#define APBC_PWM2 0x14 +#define APBC_PWM3 0x18 +#define APBC_RTC 0x28 +#define APBC_TWSI0 0x2c +#define APBC_KPC 0x30 +#define APBC_TIMER 0x34 +#define APBC_AIB 0x3c +#define APBC_SW_JTAG 0x40 +#define APBC_ONEWIRE 0x48 +#define APBC_TWSI1 0x6c +#define APBC_UART2 0x70 +#define APBC_AC97 0x84 +#define APBC_SSP0 0x81c +#define APBC_SSP1 0x820 +#define APBC_SSP2 0x84c +#define APBC_SSP3 0x858 +#define APBC_SSP4 0x85c +#define APMU_DISP0 0x4c +#define APMU_CCIC0 0x50 +#define APMU_SDH0 0x54 +#define APMU_SDH1 0x58 +#define APMU_USB 0x5c +#define APMU_DFC 0x60 +#define APMU_DMA 0x64 +#define APMU_BUS 0x6c +#define APMU_GC 0xcc +#define APMU_SMC 0xd4 +#define APMU_XD 0xdc +#define APMU_SDH2 0xe0 +#define APMU_SDH3 0xe4 +#define APMU_CF 0xf0 +#define APMU_MSP 0xf4 +#define APMU_CMU 0xf8 +#define APMU_FE 0xfc +#define APMU_PCIE 0x100 +#define APMU_EPD 0x104 +#define MPMU_UART_PLL 0x14 + +struct pxa168_clk_unit { + struct mmp_clk_unit unit; + void __iomem *mpmu_base; + void __iomem *apmu_base; + void __iomem *apbc_base; +}; + +static struct mmp_param_fixed_rate_clk fixed_rate_clks[] = { + {PXA168_CLK_CLK32, "clk32", NULL, 0, 32768}, + {PXA168_CLK_VCTCXO, "vctcxo", NULL, 0, 26000000}, + {PXA168_CLK_PLL1, "pll1", NULL, 0, 624000000}, + {PXA168_CLK_USB_PLL, "usb_pll", NULL, 0, 480000000}, +}; + +static struct mmp_param_fixed_factor_clk fixed_factor_clks[] = { + {PXA168_CLK_PLL1_2, "pll1_2", "pll1", 1, 2, 0}, + {PXA168_CLK_PLL1_4, "pll1_4", "pll1_2", 1, 2, 0}, + {PXA168_CLK_PLL1_8, "pll1_8", "pll1_4", 1, 2, 0}, + {PXA168_CLK_PLL1_16, "pll1_16", "pll1_8", 1, 2, 0}, + {PXA168_CLK_PLL1_6, "pll1_6", "pll1_2", 1, 3, 0}, + {PXA168_CLK_PLL1_12, "pll1_12", "pll1_6", 1, 2, 0}, + {PXA168_CLK_PLL1_24, "pll1_24", "pll1_12", 1, 2, 0}, + {PXA168_CLK_PLL1_48, "pll1_48", "pll1_24", 1, 2, 0}, + {PXA168_CLK_PLL1_96, "pll1_96", "pll1_48", 1, 2, 0}, + {PXA168_CLK_PLL1_192, "pll1_192", "pll1_96", 1, 2, 0}, + {PXA168_CLK_PLL1_13, "pll1_13", "pll1", 1, 13, 0}, + {PXA168_CLK_PLL1_13_1_5, "pll1_13_1_5", "pll1_13", 1, 5, 0}, + {PXA168_CLK_PLL1_2_1_5, "pll1_2_1_5", "pll1_2", 1, 5, 0}, + {PXA168_CLK_PLL1_3_16, "pll1_3_16", "pll1", 3, 16, 0}, + {PXA168_CLK_PLL1_2_1_10, "pll1_2_1_10", "pll1_2", 1, 10, 0}, + {PXA168_CLK_PLL1_2_3_16, "pll1_2_3_16", "pll1_2", 3, 16, 0}, + {PXA168_CLK_CLK32_2, "clk32_2", "clk32", 1, 2, 0}, +}; + +static struct mmp_clk_factor_masks uart_factor_masks = { + .factor = 2, + .num_mask = 0x1fff, + .den_mask = 0x1fff, + .num_shift = 16, + .den_shift = 0, +}; + +static struct mmp_clk_factor_tbl uart_factor_tbl[] = { + {.num = 8125, .den = 1536}, /*14.745MHZ */ +}; + +static void pxa168_pll_init(struct pxa168_clk_unit *pxa_unit) +{ + struct clk *clk; + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_fixed_rate_clks(unit, fixed_rate_clks, + ARRAY_SIZE(fixed_rate_clks)); + + mmp_register_fixed_factor_clks(unit, fixed_factor_clks, + ARRAY_SIZE(fixed_factor_clks)); + + clk = mmp_clk_register_factor("uart_pll", "pll1_4", + CLK_SET_RATE_PARENT, + pxa_unit->mpmu_base + MPMU_UART_PLL, + &uart_factor_masks, uart_factor_tbl, + ARRAY_SIZE(uart_factor_tbl), NULL); + mmp_clk_add(unit, PXA168_CLK_UART_PLL, clk); +} + +static DEFINE_SPINLOCK(twsi0_lock); +static DEFINE_SPINLOCK(twsi1_lock); +static const char * const twsi_parent_names[] = {"pll1_2_1_10", "pll1_2_1_5"}; + +static DEFINE_SPINLOCK(kpc_lock); +static const char * const kpc_parent_names[] = {"clk32", "clk32_2", "pll1_24"}; + +static DEFINE_SPINLOCK(pwm0_lock); +static DEFINE_SPINLOCK(pwm1_lock); +static DEFINE_SPINLOCK(pwm2_lock); +static DEFINE_SPINLOCK(pwm3_lock); +static const char * const pwm_parent_names[] = {"pll1_48", "clk32"}; + +static DEFINE_SPINLOCK(uart0_lock); +static DEFINE_SPINLOCK(uart1_lock); +static DEFINE_SPINLOCK(uart2_lock); +static const char * const uart_parent_names[] = {"pll1_2_3_16", "uart_pll"}; + +static DEFINE_SPINLOCK(ssp0_lock); +static DEFINE_SPINLOCK(ssp1_lock); +static DEFINE_SPINLOCK(ssp2_lock); +static DEFINE_SPINLOCK(ssp3_lock); +static DEFINE_SPINLOCK(ssp4_lock); +static const char * const ssp_parent_names[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"}; + +static DEFINE_SPINLOCK(timer_lock); +static const char * const timer_parent_names[] = {"pll1_48", "clk32", "pll1_96", "pll1_192"}; + +static DEFINE_SPINLOCK(reset_lock); + +static struct mmp_param_mux_clk apbc_mux_clks[] = { + {0, "twsi0_mux", twsi_parent_names, ARRAY_SIZE(twsi_parent_names), CLK_SET_RATE_PARENT, APBC_TWSI0, 4, 3, 0, &twsi0_lock}, + {0, "twsi1_mux", twsi_parent_names, ARRAY_SIZE(twsi_parent_names), CLK_SET_RATE_PARENT, APBC_TWSI1, 4, 3, 0, &twsi1_lock}, + {0, "kpc_mux", kpc_parent_names, ARRAY_SIZE(kpc_parent_names), CLK_SET_RATE_PARENT, APBC_KPC, 4, 3, 0, &kpc_lock}, + {0, "pwm0_mux", pwm_parent_names, ARRAY_SIZE(pwm_parent_names), CLK_SET_RATE_PARENT, APBC_PWM0, 4, 3, 0, &pwm0_lock}, + {0, "pwm1_mux", pwm_parent_names, ARRAY_SIZE(pwm_parent_names), CLK_SET_RATE_PARENT, APBC_PWM1, 4, 3, 0, &pwm1_lock}, + {0, "pwm2_mux", pwm_parent_names, ARRAY_SIZE(pwm_parent_names), CLK_SET_RATE_PARENT, APBC_PWM2, 4, 3, 0, &pwm2_lock}, + {0, "pwm3_mux", pwm_parent_names, ARRAY_SIZE(pwm_parent_names), CLK_SET_RATE_PARENT, APBC_PWM3, 4, 3, 0, &pwm3_lock}, + {0, "uart0_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART0, 4, 3, 0, &uart0_lock}, + {0, "uart1_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART1, 4, 3, 0, &uart1_lock}, + {0, "uart2_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART2, 4, 3, 0, &uart2_lock}, + {0, "ssp0_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP0, 4, 3, 0, &ssp0_lock}, + {0, "ssp1_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP1, 4, 3, 0, &ssp1_lock}, + {0, "ssp2_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP2, 4, 3, 0, &ssp2_lock}, + {0, "ssp3_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP3, 4, 3, 0, &ssp3_lock}, + {0, "ssp4_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP4, 4, 3, 0, &ssp4_lock}, + {0, "timer_mux", timer_parent_names, ARRAY_SIZE(timer_parent_names), CLK_SET_RATE_PARENT, APBC_TIMER, 4, 3, 0, &timer_lock}, +}; + +static struct mmp_param_gate_clk apbc_gate_clks[] = { + {PXA168_CLK_TWSI0, "twsi0_clk", "twsi0_mux", CLK_SET_RATE_PARENT, APBC_TWSI0, 0x3, 0x3, 0x0, 0, &twsi0_lock}, + {PXA168_CLK_TWSI1, "twsi1_clk", "twsi1_mux", CLK_SET_RATE_PARENT, APBC_TWSI1, 0x3, 0x3, 0x0, 0, &twsi1_lock}, + {PXA168_CLK_GPIO, "gpio_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_GPIO, 0x1, 0x1, 0x0, 0, &reset_lock}, + {PXA168_CLK_KPC, "kpc_clk", "kpc_mux", CLK_SET_RATE_PARENT, APBC_KPC, 0x3, 0x3, 0x0, MMP_CLK_GATE_NEED_DELAY, &kpc_lock}, + {PXA168_CLK_RTC, "rtc_clk", "clk32", CLK_SET_RATE_PARENT, APBC_RTC, 0x83, 0x83, 0x0, MMP_CLK_GATE_NEED_DELAY, NULL}, + {PXA168_CLK_PWM0, "pwm0_clk", "pwm0_mux", CLK_SET_RATE_PARENT, APBC_PWM0, 0x3, 0x3, 0x0, 0, &pwm0_lock}, + {PXA168_CLK_PWM1, "pwm1_clk", "pwm1_mux", CLK_SET_RATE_PARENT, APBC_PWM1, 0x3, 0x3, 0x0, 0, &pwm1_lock}, + {PXA168_CLK_PWM2, "pwm2_clk", "pwm2_mux", CLK_SET_RATE_PARENT, APBC_PWM2, 0x3, 0x3, 0x0, 0, &pwm2_lock}, + {PXA168_CLK_PWM3, "pwm3_clk", "pwm3_mux", CLK_SET_RATE_PARENT, APBC_PWM3, 0x3, 0x3, 0x0, 0, &pwm3_lock}, + {PXA168_CLK_UART0, "uart0_clk", "uart0_mux", CLK_SET_RATE_PARENT, APBC_UART0, 0x3, 0x3, 0x0, 0, &uart0_lock}, + {PXA168_CLK_UART1, "uart1_clk", "uart1_mux", CLK_SET_RATE_PARENT, APBC_UART1, 0x3, 0x3, 0x0, 0, &uart1_lock}, + {PXA168_CLK_UART2, "uart2_clk", "uart2_mux", CLK_SET_RATE_PARENT, APBC_UART2, 0x3, 0x3, 0x0, 0, &uart2_lock}, + {PXA168_CLK_SSP0, "ssp0_clk", "ssp0_mux", CLK_SET_RATE_PARENT, APBC_SSP0, 0x3, 0x3, 0x0, 0, &ssp0_lock}, + {PXA168_CLK_SSP1, "ssp1_clk", "ssp1_mux", CLK_SET_RATE_PARENT, APBC_SSP1, 0x3, 0x3, 0x0, 0, &ssp1_lock}, + {PXA168_CLK_SSP2, "ssp2_clk", "ssp2_mux", CLK_SET_RATE_PARENT, APBC_SSP2, 0x3, 0x3, 0x0, 0, &ssp2_lock}, + {PXA168_CLK_SSP3, "ssp3_clk", "ssp3_mux", CLK_SET_RATE_PARENT, APBC_SSP3, 0x3, 0x3, 0x0, 0, &ssp3_lock}, + {PXA168_CLK_SSP4, "ssp4_clk", "ssp4_mux", CLK_SET_RATE_PARENT, APBC_SSP4, 0x3, 0x3, 0x0, 0, &ssp4_lock}, + {PXA168_CLK_TIMER, "timer_clk", "timer_mux", CLK_SET_RATE_PARENT, APBC_TIMER, 0x3, 0x3, 0x0, 0, &timer_lock}, +}; + +static void pxa168_apb_periph_clk_init(struct pxa168_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_mux_clks(unit, apbc_mux_clks, pxa_unit->apbc_base, + ARRAY_SIZE(apbc_mux_clks)); + + mmp_register_gate_clks(unit, apbc_gate_clks, pxa_unit->apbc_base, + ARRAY_SIZE(apbc_gate_clks)); + +} + +static DEFINE_SPINLOCK(dfc_lock); +static const char * const dfc_parent_names[] = {"pll1_4", "pll1_8"}; + +static DEFINE_SPINLOCK(sdh0_lock); +static DEFINE_SPINLOCK(sdh1_lock); +static DEFINE_SPINLOCK(sdh2_lock); +static DEFINE_SPINLOCK(sdh3_lock); +static const char * const sdh_parent_names[] = {"pll1_13", "pll1_12", "pll1_8"}; + +static DEFINE_SPINLOCK(usb_lock); + +static DEFINE_SPINLOCK(disp0_lock); +static const char * const disp_parent_names[] = {"pll1", "pll1_2"}; + +static DEFINE_SPINLOCK(ccic0_lock); +static const char * const ccic_parent_names[] = {"pll1_4", "pll1_8"}; +static const char * const ccic_phy_parent_names[] = {"pll1_6", "pll1_12"}; + +static struct mmp_param_mux_clk apmu_mux_clks[] = { + {0, "dfc_mux", dfc_parent_names, ARRAY_SIZE(dfc_parent_names), CLK_SET_RATE_PARENT, APMU_DFC, 6, 1, 0, &dfc_lock}, + {0, "sdh0_mux", sdh_parent_names, ARRAY_SIZE(sdh_parent_names), CLK_SET_RATE_PARENT, APMU_SDH0, 6, 2, 0, &sdh0_lock}, + {0, "sdh1_mux", sdh_parent_names, ARRAY_SIZE(sdh_parent_names), CLK_SET_RATE_PARENT, APMU_SDH1, 6, 2, 0, &sdh1_lock}, + {0, "sdh2_mux", sdh_parent_names, ARRAY_SIZE(sdh_parent_names), CLK_SET_RATE_PARENT, APMU_SDH2, 6, 2, 0, &sdh2_lock}, + {0, "sdh3_mux", sdh_parent_names, ARRAY_SIZE(sdh_parent_names), CLK_SET_RATE_PARENT, APMU_SDH3, 6, 2, 0, &sdh3_lock}, + {0, "disp0_mux", disp_parent_names, ARRAY_SIZE(disp_parent_names), CLK_SET_RATE_PARENT, APMU_DISP0, 6, 1, 0, &disp0_lock}, + {0, "ccic0_mux", ccic_parent_names, ARRAY_SIZE(ccic_parent_names), CLK_SET_RATE_PARENT, APMU_CCIC0, 6, 1, 0, &ccic0_lock}, + {0, "ccic0_phy_mux", ccic_phy_parent_names, ARRAY_SIZE(ccic_phy_parent_names), CLK_SET_RATE_PARENT, APMU_CCIC0, 7, 1, 0, &ccic0_lock}, +}; + +static struct mmp_param_div_clk apmu_div_clks[] = { + {0, "ccic0_sphy_div", "ccic0_mux", CLK_SET_RATE_PARENT, APMU_CCIC0, 10, 5, 0, &ccic0_lock}, +}; + +static struct mmp_param_gate_clk apmu_gate_clks[] = { + {PXA168_CLK_DFC, "dfc_clk", "dfc_mux", CLK_SET_RATE_PARENT, APMU_DFC, 0x19b, 0x19b, 0x0, 0, &dfc_lock}, + {PXA168_CLK_USB, "usb_clk", "usb_pll", 0, APMU_USB, 0x9, 0x9, 0x0, 0, &usb_lock}, + {PXA168_CLK_SPH, "sph_clk", "usb_pll", 0, APMU_USB, 0x12, 0x12, 0x0, 0, &usb_lock}, + {PXA168_CLK_SDH0, "sdh0_clk", "sdh0_mux", CLK_SET_RATE_PARENT, APMU_SDH0, 0x12, 0x12, 0x0, 0, &sdh0_lock}, + {PXA168_CLK_SDH1, "sdh1_clk", "sdh1_mux", CLK_SET_RATE_PARENT, APMU_SDH1, 0x12, 0x12, 0x0, 0, &sdh1_lock}, + {PXA168_CLK_SDH2, "sdh2_clk", "sdh2_mux", CLK_SET_RATE_PARENT, APMU_SDH2, 0x12, 0x12, 0x0, 0, &sdh2_lock}, + {PXA168_CLK_SDH3, "sdh3_clk", "sdh3_mux", CLK_SET_RATE_PARENT, APMU_SDH3, 0x12, 0x12, 0x0, 0, &sdh3_lock}, + /* SDH0/1 and 2/3 AXI clocks are also gated by common bits in SDH0 and SDH2 registers */ + {PXA168_CLK_SDH01_AXI, "sdh01_axi_clk", NULL, CLK_SET_RATE_PARENT, APMU_SDH0, 0x9, 0x9, 0x0, 0, &sdh0_lock}, + {PXA168_CLK_SDH23_AXI, "sdh23_axi_clk", NULL, CLK_SET_RATE_PARENT, APMU_SDH2, 0x9, 0x9, 0x0, 0, &sdh2_lock}, + {PXA168_CLK_DISP0, "disp0_clk", "disp0_mux", CLK_SET_RATE_PARENT, APMU_DISP0, 0x1b, 0x1b, 0x0, 0, &disp0_lock}, + {PXA168_CLK_CCIC0, "ccic0_clk", "ccic0_mux", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x1b, 0x1b, 0x0, 0, &ccic0_lock}, + {PXA168_CLK_CCIC0_PHY, "ccic0_phy_clk", "ccic0_phy_mux", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x24, 0x24, 0x0, 0, &ccic0_lock}, + {PXA168_CLK_CCIC0_SPHY, "ccic0_sphy_clk", "ccic0_sphy_div", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x300, 0x300, 0x0, 0, &ccic0_lock}, +}; + +static void pxa168_axi_periph_clk_init(struct pxa168_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_mux_clks(unit, apmu_mux_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_mux_clks)); + + mmp_register_div_clks(unit, apmu_div_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_div_clks)); + + mmp_register_gate_clks(unit, apmu_gate_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_gate_clks)); +} + +static void pxa168_clk_reset_init(struct device_node *np, + struct pxa168_clk_unit *pxa_unit) +{ + struct mmp_clk_reset_cell *cells; + int i, nr_resets; + + nr_resets = ARRAY_SIZE(apbc_gate_clks); + cells = kcalloc(nr_resets, sizeof(*cells), GFP_KERNEL); + if (!cells) + return; + + for (i = 0; i < nr_resets; i++) { + cells[i].clk_id = apbc_gate_clks[i].id; + cells[i].reg = pxa_unit->apbc_base + apbc_gate_clks[i].offset; + cells[i].flags = 0; + cells[i].lock = apbc_gate_clks[i].lock; + cells[i].bits = 0x4; + } + + mmp_clk_reset_register(np, cells, nr_resets); +} + +static void __init pxa168_clk_init(struct device_node *np) +{ + struct pxa168_clk_unit *pxa_unit; + + pxa_unit = kzalloc(sizeof(*pxa_unit), GFP_KERNEL); + if (!pxa_unit) + return; + + pxa_unit->mpmu_base = of_iomap(np, 0); + if (!pxa_unit->mpmu_base) { + pr_err("failed to map mpmu registers\n"); + return; + } + + pxa_unit->apmu_base = of_iomap(np, 1); + if (!pxa_unit->apmu_base) { + pr_err("failed to map apmu registers\n"); + return; + } + + pxa_unit->apbc_base = of_iomap(np, 2); + if (!pxa_unit->apbc_base) { + pr_err("failed to map apbc registers\n"); + return; + } + + mmp_clk_init(np, &pxa_unit->unit, PXA168_NR_CLKS); + + pxa168_pll_init(pxa_unit); + + pxa168_apb_periph_clk_init(pxa_unit); + + pxa168_axi_periph_clk_init(pxa_unit); + + pxa168_clk_reset_init(np, pxa_unit); +} + +CLK_OF_DECLARE(pxa168_clk, "marvell,pxa168-clock", pxa168_clk_init); diff --git a/drivers/clk/mmp/clk-of-pxa1928.c b/drivers/clk/mmp/clk-of-pxa1928.c new file mode 100644 index 000000000..2508a0d79 --- /dev/null +++ b/drivers/clk/mmp/clk-of-pxa1928.c @@ -0,0 +1,264 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * pxa1928 clock framework source file + * + * Copyright (C) 2015 Linaro, Ltd. + * Rob Herring <robh@kernel.org> + * + * Based on drivers/clk/mmp/clk-of-mmp2.c: + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + */ +#include <linux/kernel.h> +#include <linux/io.h> +#include <linux/of_address.h> +#include <linux/slab.h> +#include <linux/spinlock.h> + +#include <dt-bindings/clock/marvell,pxa1928.h> + +#include "clk.h" +#include "reset.h" + +#define MPMU_UART_PLL 0x14 + +struct pxa1928_clk_unit { + struct mmp_clk_unit unit; + void __iomem *mpmu_base; + void __iomem *apmu_base; + void __iomem *apbc_base; + void __iomem *apbcp_base; +}; + +static struct mmp_param_fixed_rate_clk fixed_rate_clks[] = { + {0, "clk32", NULL, 0, 32768}, + {0, "vctcxo", NULL, 0, 26000000}, + {0, "pll1_624", NULL, 0, 624000000}, + {0, "pll5p", NULL, 0, 832000000}, + {0, "pll5", NULL, 0, 1248000000}, + {0, "usb_pll", NULL, 0, 480000000}, +}; + +static struct mmp_param_fixed_factor_clk fixed_factor_clks[] = { + {0, "pll1_d2", "pll1_624", 1, 2, 0}, + {0, "pll1_d9", "pll1_624", 1, 9, 0}, + {0, "pll1_d12", "pll1_624", 1, 12, 0}, + {0, "pll1_d16", "pll1_624", 1, 16, 0}, + {0, "pll1_d20", "pll1_624", 1, 20, 0}, + {0, "pll1_416", "pll1_624", 2, 3, 0}, + {0, "vctcxo_d2", "vctcxo", 1, 2, 0}, + {0, "vctcxo_d4", "vctcxo", 1, 4, 0}, +}; + +static struct mmp_clk_factor_masks uart_factor_masks = { + .factor = 2, + .num_mask = 0x1fff, + .den_mask = 0x1fff, + .num_shift = 16, + .den_shift = 0, +}; + +static struct mmp_clk_factor_tbl uart_factor_tbl[] = { + {.num = 832, .den = 234}, /*58.5MHZ */ + {.num = 1, .den = 1}, /*26MHZ */ +}; + +static void pxa1928_pll_init(struct pxa1928_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_fixed_rate_clks(unit, fixed_rate_clks, + ARRAY_SIZE(fixed_rate_clks)); + + mmp_register_fixed_factor_clks(unit, fixed_factor_clks, + ARRAY_SIZE(fixed_factor_clks)); + + mmp_clk_register_factor("uart_pll", "pll1_416", + CLK_SET_RATE_PARENT, + pxa_unit->mpmu_base + MPMU_UART_PLL, + &uart_factor_masks, uart_factor_tbl, + ARRAY_SIZE(uart_factor_tbl), NULL); +} + +static DEFINE_SPINLOCK(uart0_lock); +static DEFINE_SPINLOCK(uart1_lock); +static DEFINE_SPINLOCK(uart2_lock); +static DEFINE_SPINLOCK(uart3_lock); +static const char *uart_parent_names[] = {"uart_pll", "vctcxo"}; + +static DEFINE_SPINLOCK(ssp0_lock); +static DEFINE_SPINLOCK(ssp1_lock); +static const char *ssp_parent_names[] = {"vctcxo_d4", "vctcxo_d2", "vctcxo", "pll1_d12"}; + +static DEFINE_SPINLOCK(reset_lock); + +static struct mmp_param_mux_clk apbc_mux_clks[] = { + {0, "uart0_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_UART0 * 4, 4, 3, 0, &uart0_lock}, + {0, "uart1_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_UART1 * 4, 4, 3, 0, &uart1_lock}, + {0, "uart2_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_UART2 * 4, 4, 3, 0, &uart2_lock}, + {0, "uart3_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_UART3 * 4, 4, 3, 0, &uart3_lock}, + {0, "ssp0_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_SSP0 * 4, 4, 3, 0, &ssp0_lock}, + {0, "ssp1_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_SSP1 * 4, 4, 3, 0, &ssp1_lock}, +}; + +static struct mmp_param_gate_clk apbc_gate_clks[] = { + {PXA1928_CLK_TWSI0, "twsi0_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI0 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_TWSI1, "twsi1_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI1 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_TWSI2, "twsi2_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI2 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_TWSI3, "twsi3_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI3 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_TWSI4, "twsi4_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI4 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_TWSI5, "twsi5_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_TWSI5 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_GPIO, "gpio_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_GPIO * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_KPC, "kpc_clk", "clk32", CLK_SET_RATE_PARENT, PXA1928_CLK_KPC * 4, 0x3, 0x3, 0x0, MMP_CLK_GATE_NEED_DELAY, NULL}, + {PXA1928_CLK_RTC, "rtc_clk", "clk32", CLK_SET_RATE_PARENT, PXA1928_CLK_RTC * 4, 0x83, 0x83, 0x0, MMP_CLK_GATE_NEED_DELAY, NULL}, + {PXA1928_CLK_PWM0, "pwm0_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_PWM0 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_PWM1, "pwm1_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_PWM1 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_PWM2, "pwm2_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_PWM2 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA1928_CLK_PWM3, "pwm3_clk", "vctcxo", CLK_SET_RATE_PARENT, PXA1928_CLK_PWM3 * 4, 0x3, 0x3, 0x0, 0, &reset_lock}, + /* The gate clocks has mux parent. */ + {PXA1928_CLK_UART0, "uart0_clk", "uart0_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_UART0 * 4, 0x3, 0x3, 0x0, 0, &uart0_lock}, + {PXA1928_CLK_UART1, "uart1_clk", "uart1_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_UART1 * 4, 0x3, 0x3, 0x0, 0, &uart1_lock}, + {PXA1928_CLK_UART2, "uart2_clk", "uart2_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_UART2 * 4, 0x3, 0x3, 0x0, 0, &uart2_lock}, + {PXA1928_CLK_UART3, "uart3_clk", "uart3_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_UART3 * 4, 0x3, 0x3, 0x0, 0, &uart3_lock}, + {PXA1928_CLK_SSP0, "ssp0_clk", "ssp0_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_SSP0 * 4, 0x3, 0x3, 0x0, 0, &ssp0_lock}, + {PXA1928_CLK_SSP1, "ssp1_clk", "ssp1_mux", CLK_SET_RATE_PARENT, PXA1928_CLK_SSP1 * 4, 0x3, 0x3, 0x0, 0, &ssp1_lock}, +}; + +static void pxa1928_apb_periph_clk_init(struct pxa1928_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_mux_clks(unit, apbc_mux_clks, pxa_unit->apbc_base, + ARRAY_SIZE(apbc_mux_clks)); + + mmp_register_gate_clks(unit, apbc_gate_clks, pxa_unit->apbc_base, + ARRAY_SIZE(apbc_gate_clks)); +} + +static DEFINE_SPINLOCK(sdh0_lock); +static DEFINE_SPINLOCK(sdh1_lock); +static DEFINE_SPINLOCK(sdh2_lock); +static DEFINE_SPINLOCK(sdh3_lock); +static DEFINE_SPINLOCK(sdh4_lock); +static const char *sdh_parent_names[] = {"pll1_624", "pll5p", "pll5", "pll1_416"}; + +static DEFINE_SPINLOCK(usb_lock); + +static struct mmp_param_mux_clk apmu_mux_clks[] = { + {0, "sdh_mux", sdh_parent_names, ARRAY_SIZE(sdh_parent_names), CLK_SET_RATE_PARENT, PXA1928_CLK_SDH0 * 4, 8, 2, 0, &sdh0_lock}, +}; + +static struct mmp_param_div_clk apmu_div_clks[] = { + {0, "sdh_div", "sdh_mux", 0, PXA1928_CLK_SDH0 * 4, 10, 4, CLK_DIVIDER_ONE_BASED, &sdh0_lock}, +}; + +static struct mmp_param_gate_clk apmu_gate_clks[] = { + {PXA1928_CLK_USB, "usb_clk", "usb_pll", 0, PXA1928_CLK_USB * 4, 0x9, 0x9, 0x0, 0, &usb_lock}, + {PXA1928_CLK_HSIC, "hsic_clk", "usb_pll", 0, PXA1928_CLK_HSIC * 4, 0x9, 0x9, 0x0, 0, &usb_lock}, + /* The gate clocks has mux parent. */ + {PXA1928_CLK_SDH0, "sdh0_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH0 * 4, 0x1b, 0x1b, 0x0, 0, &sdh0_lock}, + {PXA1928_CLK_SDH1, "sdh1_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH1 * 4, 0x1b, 0x1b, 0x0, 0, &sdh1_lock}, + {PXA1928_CLK_SDH2, "sdh2_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH2 * 4, 0x1b, 0x1b, 0x0, 0, &sdh2_lock}, + {PXA1928_CLK_SDH3, "sdh3_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH3 * 4, 0x1b, 0x1b, 0x0, 0, &sdh3_lock}, + {PXA1928_CLK_SDH4, "sdh4_clk", "sdh_div", CLK_SET_RATE_PARENT, PXA1928_CLK_SDH4 * 4, 0x1b, 0x1b, 0x0, 0, &sdh4_lock}, +}; + +static void pxa1928_axi_periph_clk_init(struct pxa1928_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_mux_clks(unit, apmu_mux_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_mux_clks)); + + mmp_register_div_clks(unit, apmu_div_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_div_clks)); + + mmp_register_gate_clks(unit, apmu_gate_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_gate_clks)); +} + +static void pxa1928_clk_reset_init(struct device_node *np, + struct pxa1928_clk_unit *pxa_unit) +{ + struct mmp_clk_reset_cell *cells; + int i, base, nr_resets; + + nr_resets = ARRAY_SIZE(apbc_gate_clks); + cells = kcalloc(nr_resets, sizeof(*cells), GFP_KERNEL); + if (!cells) + return; + + base = 0; + for (i = 0; i < nr_resets; i++) { + cells[base + i].clk_id = apbc_gate_clks[i].id; + cells[base + i].reg = + pxa_unit->apbc_base + apbc_gate_clks[i].offset; + cells[base + i].flags = 0; + cells[base + i].lock = apbc_gate_clks[i].lock; + cells[base + i].bits = 0x4; + } + + mmp_clk_reset_register(np, cells, nr_resets); +} + +static void __init pxa1928_mpmu_clk_init(struct device_node *np) +{ + struct pxa1928_clk_unit *pxa_unit; + + pxa_unit = kzalloc(sizeof(*pxa_unit), GFP_KERNEL); + if (!pxa_unit) + return; + + pxa_unit->mpmu_base = of_iomap(np, 0); + if (!pxa_unit->mpmu_base) { + pr_err("failed to map mpmu registers\n"); + kfree(pxa_unit); + return; + } + + pxa1928_pll_init(pxa_unit); +} +CLK_OF_DECLARE(pxa1928_mpmu_clk, "marvell,pxa1928-mpmu", pxa1928_mpmu_clk_init); + +static void __init pxa1928_apmu_clk_init(struct device_node *np) +{ + struct pxa1928_clk_unit *pxa_unit; + + pxa_unit = kzalloc(sizeof(*pxa_unit), GFP_KERNEL); + if (!pxa_unit) + return; + + pxa_unit->apmu_base = of_iomap(np, 0); + if (!pxa_unit->apmu_base) { + pr_err("failed to map apmu registers\n"); + kfree(pxa_unit); + return; + } + + mmp_clk_init(np, &pxa_unit->unit, PXA1928_APMU_NR_CLKS); + + pxa1928_axi_periph_clk_init(pxa_unit); +} +CLK_OF_DECLARE(pxa1928_apmu_clk, "marvell,pxa1928-apmu", pxa1928_apmu_clk_init); + +static void __init pxa1928_apbc_clk_init(struct device_node *np) +{ + struct pxa1928_clk_unit *pxa_unit; + + pxa_unit = kzalloc(sizeof(*pxa_unit), GFP_KERNEL); + if (!pxa_unit) + return; + + pxa_unit->apbc_base = of_iomap(np, 0); + if (!pxa_unit->apbc_base) { + pr_err("failed to map apbc registers\n"); + kfree(pxa_unit); + return; + } + + mmp_clk_init(np, &pxa_unit->unit, PXA1928_APBC_NR_CLKS); + + pxa1928_apb_periph_clk_init(pxa_unit); + pxa1928_clk_reset_init(np, pxa_unit); +} +CLK_OF_DECLARE(pxa1928_apbc_clk, "marvell,pxa1928-apbc", pxa1928_apbc_clk_init); diff --git a/drivers/clk/mmp/clk-of-pxa910.c b/drivers/clk/mmp/clk-of-pxa910.c new file mode 100644 index 000000000..4d15bac98 --- /dev/null +++ b/drivers/clk/mmp/clk-of-pxa910.c @@ -0,0 +1,321 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * pxa910 clock framework source file + * + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/of_address.h> + +#include <dt-bindings/clock/marvell,pxa910.h> + +#include "clk.h" +#include "reset.h" + +#define APBC_RTC 0x28 +#define APBC_TWSI0 0x2c +#define APBC_KPC 0x18 +#define APBC_UART0 0x0 +#define APBC_UART1 0x4 +#define APBC_GPIO 0x8 +#define APBC_PWM0 0xc +#define APBC_PWM1 0x10 +#define APBC_PWM2 0x14 +#define APBC_PWM3 0x18 +#define APBC_SSP0 0x1c +#define APBC_SSP1 0x20 +#define APBC_SSP2 0x4c +#define APBC_TIMER0 0x30 +#define APBC_TIMER1 0x44 +#define APBCP_TWSI1 0x28 +#define APBCP_UART2 0x1c +#define APMU_SDH0 0x54 +#define APMU_SDH1 0x58 +#define APMU_USB 0x5c +#define APMU_DISP0 0x4c +#define APMU_CCIC0 0x50 +#define APMU_DFC 0x60 +#define MPMU_UART_PLL 0x14 + +struct pxa910_clk_unit { + struct mmp_clk_unit unit; + void __iomem *mpmu_base; + void __iomem *apmu_base; + void __iomem *apbc_base; + void __iomem *apbcp_base; +}; + +static struct mmp_param_fixed_rate_clk fixed_rate_clks[] = { + {PXA910_CLK_CLK32, "clk32", NULL, 0, 32768}, + {PXA910_CLK_VCTCXO, "vctcxo", NULL, 0, 26000000}, + {PXA910_CLK_PLL1, "pll1", NULL, 0, 624000000}, + {PXA910_CLK_USB_PLL, "usb_pll", NULL, 0, 480000000}, +}; + +static struct mmp_param_fixed_factor_clk fixed_factor_clks[] = { + {PXA910_CLK_PLL1_2, "pll1_2", "pll1", 1, 2, 0}, + {PXA910_CLK_PLL1_4, "pll1_4", "pll1_2", 1, 2, 0}, + {PXA910_CLK_PLL1_8, "pll1_8", "pll1_4", 1, 2, 0}, + {PXA910_CLK_PLL1_16, "pll1_16", "pll1_8", 1, 2, 0}, + {PXA910_CLK_PLL1_6, "pll1_6", "pll1_2", 1, 3, 0}, + {PXA910_CLK_PLL1_12, "pll1_12", "pll1_6", 1, 2, 0}, + {PXA910_CLK_PLL1_24, "pll1_24", "pll1_12", 1, 2, 0}, + {PXA910_CLK_PLL1_48, "pll1_48", "pll1_24", 1, 2, 0}, + {PXA910_CLK_PLL1_96, "pll1_96", "pll1_48", 1, 2, 0}, + {PXA910_CLK_PLL1_192, "pll1_192", "pll1_96", 1, 2, 0}, + {PXA910_CLK_PLL1_13, "pll1_13", "pll1", 1, 13, 0}, + {PXA910_CLK_PLL1_13_1_5, "pll1_13_1_5", "pll1_13", 2, 3, 0}, + {PXA910_CLK_PLL1_2_1_5, "pll1_2_1_5", "pll1_2", 2, 3, 0}, + {PXA910_CLK_PLL1_3_16, "pll1_3_16", "pll1", 3, 16, 0}, +}; + +static struct mmp_clk_factor_masks uart_factor_masks = { + .factor = 2, + .num_mask = 0x1fff, + .den_mask = 0x1fff, + .num_shift = 16, + .den_shift = 0, +}; + +static struct mmp_clk_factor_tbl uart_factor_tbl[] = { + {.num = 8125, .den = 1536}, /*14.745MHZ */ +}; + +static void pxa910_pll_init(struct pxa910_clk_unit *pxa_unit) +{ + struct clk *clk; + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_fixed_rate_clks(unit, fixed_rate_clks, + ARRAY_SIZE(fixed_rate_clks)); + + mmp_register_fixed_factor_clks(unit, fixed_factor_clks, + ARRAY_SIZE(fixed_factor_clks)); + + clk = mmp_clk_register_factor("uart_pll", "pll1_4", + CLK_SET_RATE_PARENT, + pxa_unit->mpmu_base + MPMU_UART_PLL, + &uart_factor_masks, uart_factor_tbl, + ARRAY_SIZE(uart_factor_tbl), NULL); + mmp_clk_add(unit, PXA910_CLK_UART_PLL, clk); +} + +static DEFINE_SPINLOCK(uart0_lock); +static DEFINE_SPINLOCK(uart1_lock); +static DEFINE_SPINLOCK(uart2_lock); +static const char *uart_parent_names[] = {"pll1_3_16", "uart_pll"}; + +static DEFINE_SPINLOCK(ssp0_lock); +static DEFINE_SPINLOCK(ssp1_lock); +static const char *ssp_parent_names[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"}; + +static DEFINE_SPINLOCK(timer0_lock); +static DEFINE_SPINLOCK(timer1_lock); +static const char *timer_parent_names[] = {"pll1_48", "clk32", "pll1_96"}; + +static DEFINE_SPINLOCK(reset_lock); + +static struct mmp_param_mux_clk apbc_mux_clks[] = { + {0, "uart0_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART0, 4, 3, 0, &uart0_lock}, + {0, "uart1_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART1, 4, 3, 0, &uart1_lock}, + {0, "ssp0_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP0, 4, 3, 0, &ssp0_lock}, + {0, "ssp1_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), CLK_SET_RATE_PARENT, APBC_SSP1, 4, 3, 0, &ssp1_lock}, + {0, "timer0_mux", timer_parent_names, ARRAY_SIZE(timer_parent_names), CLK_SET_RATE_PARENT, APBC_TIMER0, 4, 3, 0, &timer0_lock}, + {0, "timer1_mux", timer_parent_names, ARRAY_SIZE(timer_parent_names), CLK_SET_RATE_PARENT, APBC_TIMER1, 4, 3, 0, &timer1_lock}, +}; + +static struct mmp_param_mux_clk apbcp_mux_clks[] = { + {0, "uart2_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBCP_UART2, 4, 3, 0, &uart2_lock}, +}; + +static struct mmp_param_gate_clk apbc_gate_clks[] = { + {PXA910_CLK_TWSI0, "twsi0_clk", "pll1_13_1_5", CLK_SET_RATE_PARENT, APBC_TWSI0, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA910_CLK_GPIO, "gpio_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_GPIO, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA910_CLK_KPC, "kpc_clk", "clk32", CLK_SET_RATE_PARENT, APBC_KPC, 0x3, 0x3, 0x0, MMP_CLK_GATE_NEED_DELAY, NULL}, + {PXA910_CLK_RTC, "rtc_clk", "clk32", CLK_SET_RATE_PARENT, APBC_RTC, 0x83, 0x83, 0x0, MMP_CLK_GATE_NEED_DELAY, NULL}, + {PXA910_CLK_PWM0, "pwm0_clk", "pll1_48", CLK_SET_RATE_PARENT, APBC_PWM0, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA910_CLK_PWM1, "pwm1_clk", "pll1_48", CLK_SET_RATE_PARENT, APBC_PWM1, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA910_CLK_PWM2, "pwm2_clk", "pll1_48", CLK_SET_RATE_PARENT, APBC_PWM2, 0x3, 0x3, 0x0, 0, &reset_lock}, + {PXA910_CLK_PWM3, "pwm3_clk", "pll1_48", CLK_SET_RATE_PARENT, APBC_PWM3, 0x3, 0x3, 0x0, 0, &reset_lock}, + /* The gate clocks has mux parent. */ + {PXA910_CLK_UART0, "uart0_clk", "uart0_mux", CLK_SET_RATE_PARENT, APBC_UART0, 0x3, 0x3, 0x0, 0, &uart0_lock}, + {PXA910_CLK_UART1, "uart1_clk", "uart1_mux", CLK_SET_RATE_PARENT, APBC_UART1, 0x3, 0x3, 0x0, 0, &uart1_lock}, + {PXA910_CLK_SSP0, "ssp0_clk", "ssp0_mux", CLK_SET_RATE_PARENT, APBC_SSP0, 0x3, 0x3, 0x0, 0, &ssp0_lock}, + {PXA910_CLK_SSP1, "ssp1_clk", "ssp1_mux", CLK_SET_RATE_PARENT, APBC_SSP1, 0x3, 0x3, 0x0, 0, &ssp1_lock}, + {PXA910_CLK_TIMER0, "timer0_clk", "timer0_mux", CLK_SET_RATE_PARENT, APBC_TIMER0, 0x3, 0x3, 0x0, 0, &timer0_lock}, + {PXA910_CLK_TIMER1, "timer1_clk", "timer1_mux", CLK_SET_RATE_PARENT, APBC_TIMER1, 0x3, 0x3, 0x0, 0, &timer1_lock}, +}; + +static struct mmp_param_gate_clk apbcp_gate_clks[] = { + {PXA910_CLK_TWSI1, "twsi1_clk", "pll1_13_1_5", CLK_SET_RATE_PARENT, APBCP_TWSI1, 0x3, 0x3, 0x0, 0, &reset_lock}, + /* The gate clocks has mux parent. */ + {PXA910_CLK_UART2, "uart2_clk", "uart2_mux", CLK_SET_RATE_PARENT, APBCP_UART2, 0x3, 0x3, 0x0, 0, &uart2_lock}, +}; + +static void pxa910_apb_periph_clk_init(struct pxa910_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_mux_clks(unit, apbc_mux_clks, pxa_unit->apbc_base, + ARRAY_SIZE(apbc_mux_clks)); + + mmp_register_mux_clks(unit, apbcp_mux_clks, pxa_unit->apbcp_base, + ARRAY_SIZE(apbcp_mux_clks)); + + mmp_register_gate_clks(unit, apbc_gate_clks, pxa_unit->apbc_base, + ARRAY_SIZE(apbc_gate_clks)); + + mmp_register_gate_clks(unit, apbcp_gate_clks, pxa_unit->apbcp_base, + ARRAY_SIZE(apbcp_gate_clks)); +} + +static DEFINE_SPINLOCK(sdh0_lock); +static DEFINE_SPINLOCK(sdh1_lock); +static const char *sdh_parent_names[] = {"pll1_12", "pll1_13"}; + +static DEFINE_SPINLOCK(usb_lock); + +static DEFINE_SPINLOCK(disp0_lock); +static const char *disp_parent_names[] = {"pll1_2", "pll1_12"}; + +static DEFINE_SPINLOCK(ccic0_lock); +static const char *ccic_parent_names[] = {"pll1_2", "pll1_12"}; +static const char *ccic_phy_parent_names[] = {"pll1_6", "pll1_12"}; + +static struct mmp_param_mux_clk apmu_mux_clks[] = { + {0, "sdh0_mux", sdh_parent_names, ARRAY_SIZE(sdh_parent_names), CLK_SET_RATE_PARENT, APMU_SDH0, 6, 1, 0, &sdh0_lock}, + {0, "sdh1_mux", sdh_parent_names, ARRAY_SIZE(sdh_parent_names), CLK_SET_RATE_PARENT, APMU_SDH1, 6, 1, 0, &sdh1_lock}, + {0, "disp0_mux", disp_parent_names, ARRAY_SIZE(disp_parent_names), CLK_SET_RATE_PARENT, APMU_DISP0, 6, 1, 0, &disp0_lock}, + {0, "ccic0_mux", ccic_parent_names, ARRAY_SIZE(ccic_parent_names), CLK_SET_RATE_PARENT, APMU_CCIC0, 6, 1, 0, &ccic0_lock}, + {0, "ccic0_phy_mux", ccic_phy_parent_names, ARRAY_SIZE(ccic_phy_parent_names), CLK_SET_RATE_PARENT, APMU_CCIC0, 7, 1, 0, &ccic0_lock}, +}; + +static struct mmp_param_div_clk apmu_div_clks[] = { + {0, "ccic0_sphy_div", "ccic0_mux", CLK_SET_RATE_PARENT, APMU_CCIC0, 10, 5, 0, &ccic0_lock}, +}; + +static struct mmp_param_gate_clk apmu_gate_clks[] = { + {PXA910_CLK_DFC, "dfc_clk", "pll1_4", CLK_SET_RATE_PARENT, APMU_DFC, 0x19b, 0x19b, 0x0, 0, NULL}, + {PXA910_CLK_USB, "usb_clk", "usb_pll", 0, APMU_USB, 0x9, 0x9, 0x0, 0, &usb_lock}, + {PXA910_CLK_SPH, "sph_clk", "usb_pll", 0, APMU_USB, 0x12, 0x12, 0x0, 0, &usb_lock}, + /* The gate clocks has mux parent. */ + {PXA910_CLK_SDH0, "sdh0_clk", "sdh0_mux", CLK_SET_RATE_PARENT, APMU_SDH0, 0x1b, 0x1b, 0x0, 0, &sdh0_lock}, + {PXA910_CLK_SDH1, "sdh1_clk", "sdh1_mux", CLK_SET_RATE_PARENT, APMU_SDH1, 0x1b, 0x1b, 0x0, 0, &sdh1_lock}, + {PXA910_CLK_DISP0, "disp0_clk", "disp0_mux", CLK_SET_RATE_PARENT, APMU_DISP0, 0x1b, 0x1b, 0x0, 0, &disp0_lock}, + {PXA910_CLK_CCIC0, "ccic0_clk", "ccic0_mux", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x1b, 0x1b, 0x0, 0, &ccic0_lock}, + {PXA910_CLK_CCIC0_PHY, "ccic0_phy_clk", "ccic0_phy_mux", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x24, 0x24, 0x0, 0, &ccic0_lock}, + {PXA910_CLK_CCIC0_SPHY, "ccic0_sphy_clk", "ccic0_sphy_div", CLK_SET_RATE_PARENT, APMU_CCIC0, 0x300, 0x300, 0x0, 0, &ccic0_lock}, +}; + +static void pxa910_axi_periph_clk_init(struct pxa910_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_mux_clks(unit, apmu_mux_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_mux_clks)); + + mmp_register_div_clks(unit, apmu_div_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_div_clks)); + + mmp_register_gate_clks(unit, apmu_gate_clks, pxa_unit->apmu_base, + ARRAY_SIZE(apmu_gate_clks)); +} + +static void pxa910_clk_reset_init(struct device_node *np, + struct pxa910_clk_unit *pxa_unit) +{ + struct mmp_clk_reset_cell *cells; + int i, base, nr_resets_apbc, nr_resets_apbcp, nr_resets; + + nr_resets_apbc = ARRAY_SIZE(apbc_gate_clks); + nr_resets_apbcp = ARRAY_SIZE(apbcp_gate_clks); + nr_resets = nr_resets_apbc + nr_resets_apbcp; + cells = kcalloc(nr_resets, sizeof(*cells), GFP_KERNEL); + if (!cells) + return; + + base = 0; + for (i = 0; i < nr_resets_apbc; i++) { + cells[base + i].clk_id = apbc_gate_clks[i].id; + cells[base + i].reg = + pxa_unit->apbc_base + apbc_gate_clks[i].offset; + cells[base + i].flags = 0; + cells[base + i].lock = apbc_gate_clks[i].lock; + cells[base + i].bits = 0x4; + } + + base = nr_resets_apbc; + for (i = 0; i < nr_resets_apbcp; i++) { + cells[base + i].clk_id = apbcp_gate_clks[i].id; + cells[base + i].reg = + pxa_unit->apbc_base + apbc_gate_clks[i].offset; + cells[base + i].flags = 0; + cells[base + i].lock = apbc_gate_clks[i].lock; + cells[base + i].bits = 0x4; + } + + mmp_clk_reset_register(np, cells, nr_resets); +} + +static void __init pxa910_clk_init(struct device_node *np) +{ + struct pxa910_clk_unit *pxa_unit; + + pxa_unit = kzalloc(sizeof(*pxa_unit), GFP_KERNEL); + if (!pxa_unit) + return; + + pxa_unit->mpmu_base = of_iomap(np, 0); + if (!pxa_unit->mpmu_base) { + pr_err("failed to map mpmu registers\n"); + goto free_memory; + } + + pxa_unit->apmu_base = of_iomap(np, 1); + if (!pxa_unit->apmu_base) { + pr_err("failed to map apmu registers\n"); + goto unmap_mpmu_region; + } + + pxa_unit->apbc_base = of_iomap(np, 2); + if (!pxa_unit->apbc_base) { + pr_err("failed to map apbc registers\n"); + goto unmap_apmu_region; + } + + pxa_unit->apbcp_base = of_iomap(np, 3); + if (!pxa_unit->apbcp_base) { + pr_err("failed to map apbcp registers\n"); + goto unmap_apbc_region; + } + + mmp_clk_init(np, &pxa_unit->unit, PXA910_NR_CLKS); + + pxa910_pll_init(pxa_unit); + + pxa910_apb_periph_clk_init(pxa_unit); + + pxa910_axi_periph_clk_init(pxa_unit); + + pxa910_clk_reset_init(np, pxa_unit); + + return; + +unmap_apbc_region: + iounmap(pxa_unit->apbc_base); +unmap_apmu_region: + iounmap(pxa_unit->apmu_base); +unmap_mpmu_region: + iounmap(pxa_unit->mpmu_base); +free_memory: + kfree(pxa_unit); +} + +CLK_OF_DECLARE(pxa910_clk, "marvell,pxa910-clock", pxa910_clk_init); diff --git a/drivers/clk/mmp/clk-pll.c b/drivers/clk/mmp/clk-pll.c new file mode 100644 index 000000000..962014cfd --- /dev/null +++ b/drivers/clk/mmp/clk-pll.c @@ -0,0 +1,170 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * MMP PLL clock rate calculation + * + * Copyright (C) 2020 Lubomir Rintel <lkundrak@v3.sk> + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> + +#include "clk.h" + +#define to_clk_mmp_pll(hw) container_of(hw, struct mmp_clk_pll, hw) + +struct mmp_clk_pll { + struct clk_hw hw; + unsigned long default_rate; + void __iomem *enable_reg; + u32 enable; + void __iomem *reg; + u8 shift; + + unsigned long input_rate; + void __iomem *postdiv_reg; + u8 postdiv_shift; +}; + +static int mmp_clk_pll_is_enabled(struct clk_hw *hw) +{ + struct mmp_clk_pll *pll = to_clk_mmp_pll(hw); + u32 val; + + val = readl_relaxed(pll->enable_reg); + if ((val & pll->enable) == pll->enable) + return 1; + + /* Some PLLs, if not software controlled, output default clock. */ + if (pll->default_rate > 0) + return 1; + + return 0; +} + +static unsigned long mmp_clk_pll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct mmp_clk_pll *pll = to_clk_mmp_pll(hw); + u32 fbdiv, refdiv, postdiv; + u64 rate; + u32 val; + + val = readl_relaxed(pll->enable_reg); + if ((val & pll->enable) != pll->enable) + return pll->default_rate; + + if (pll->reg) { + val = readl_relaxed(pll->reg); + fbdiv = (val >> pll->shift) & 0x1ff; + refdiv = (val >> (pll->shift + 9)) & 0x1f; + } else { + fbdiv = 2; + refdiv = 1; + } + + if (pll->postdiv_reg) { + /* MMP3 clock rate calculation */ + static const u8 postdivs[] = {2, 3, 4, 5, 6, 8, 10, 12, 16}; + + val = readl_relaxed(pll->postdiv_reg); + postdiv = (val >> pll->postdiv_shift) & 0x7; + + rate = pll->input_rate; + rate *= 2 * fbdiv; + do_div(rate, refdiv); + do_div(rate, postdivs[postdiv]); + } else { + /* MMP2 clock rate calculation */ + if (refdiv == 3) { + rate = 19200000; + } else if (refdiv == 4) { + rate = 26000000; + } else { + pr_err("bad refdiv: %d (0x%08x)\n", refdiv, val); + return 0; + } + + rate *= fbdiv + 2; + do_div(rate, refdiv + 2); + } + + return (unsigned long)rate; +} + +static const struct clk_ops mmp_clk_pll_ops = { + .is_enabled = mmp_clk_pll_is_enabled, + .recalc_rate = mmp_clk_pll_recalc_rate, +}; + +static struct clk *mmp_clk_register_pll(char *name, + unsigned long default_rate, + void __iomem *enable_reg, u32 enable, + void __iomem *reg, u8 shift, + unsigned long input_rate, + void __iomem *postdiv_reg, u8 postdiv_shift) +{ + struct mmp_clk_pll *pll; + struct clk *clk; + struct clk_init_data init; + + pll = kzalloc(sizeof(*pll), GFP_KERNEL); + if (!pll) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &mmp_clk_pll_ops; + init.flags = 0; + init.parent_names = NULL; + init.num_parents = 0; + + pll->default_rate = default_rate; + pll->enable_reg = enable_reg; + pll->enable = enable; + pll->reg = reg; + pll->shift = shift; + + pll->input_rate = input_rate; + pll->postdiv_reg = postdiv_reg; + pll->postdiv_shift = postdiv_shift; + + pll->hw.init = &init; + + clk = clk_register(NULL, &pll->hw); + + if (IS_ERR(clk)) + kfree(pll); + + return clk; +} + +void mmp_register_pll_clks(struct mmp_clk_unit *unit, + struct mmp_param_pll_clk *clks, + void __iomem *base, int size) +{ + struct clk *clk; + int i; + + for (i = 0; i < size; i++) { + void __iomem *reg = NULL; + + if (clks[i].offset) + reg = base + clks[i].offset; + + clk = mmp_clk_register_pll(clks[i].name, + clks[i].default_rate, + base + clks[i].enable_offset, + clks[i].enable, + reg, clks[i].shift, + clks[i].input_rate, + base + clks[i].postdiv_offset, + clks[i].postdiv_shift); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + if (clks[i].id) + unit->clk_table[clks[i].id] = clk; + } +} diff --git a/drivers/clk/mmp/clk-pxa168.c b/drivers/clk/mmp/clk-pxa168.c new file mode 100644 index 000000000..8a9b8fb3a --- /dev/null +++ b/drivers/clk/mmp/clk-pxa168.c @@ -0,0 +1,354 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * pxa168 clock framework source file + * + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + */ + +#include <linux/clk.h> +#include <linux/clk/mmp.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/err.h> + +#include "clk.h" + +#define APBC_RTC 0x28 +#define APBC_TWSI0 0x2c +#define APBC_KPC 0x30 +#define APBC_UART0 0x0 +#define APBC_UART1 0x4 +#define APBC_GPIO 0x8 +#define APBC_PWM0 0xc +#define APBC_PWM1 0x10 +#define APBC_PWM2 0x14 +#define APBC_PWM3 0x18 +#define APBC_SSP0 0x81c +#define APBC_SSP1 0x820 +#define APBC_SSP2 0x84c +#define APBC_SSP3 0x858 +#define APBC_SSP4 0x85c +#define APBC_TWSI1 0x6c +#define APBC_UART2 0x70 +#define APMU_SDH0 0x54 +#define APMU_SDH1 0x58 +#define APMU_USB 0x5c +#define APMU_DISP0 0x4c +#define APMU_CCIC0 0x50 +#define APMU_DFC 0x60 +#define MPMU_UART_PLL 0x14 + +static DEFINE_SPINLOCK(clk_lock); + +static struct mmp_clk_factor_masks uart_factor_masks = { + .factor = 2, + .num_mask = 0x1fff, + .den_mask = 0x1fff, + .num_shift = 16, + .den_shift = 0, +}; + +static struct mmp_clk_factor_tbl uart_factor_tbl[] = { + {.num = 8125, .den = 1536}, /*14.745MHZ */ +}; + +static const char *uart_parent[] = {"pll1_3_16", "uart_pll"}; +static const char *ssp_parent[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"}; +static const char *sdh_parent[] = {"pll1_12", "pll1_13"}; +static const char *disp_parent[] = {"pll1_2", "pll1_12"}; +static const char *ccic_parent[] = {"pll1_2", "pll1_12"}; +static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"}; + +void __init pxa168_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys, + phys_addr_t apbc_phys) +{ + struct clk *clk; + struct clk *uart_pll; + void __iomem *mpmu_base; + void __iomem *apmu_base; + void __iomem *apbc_base; + + mpmu_base = ioremap(mpmu_phys, SZ_4K); + if (!mpmu_base) { + pr_err("error to ioremap MPMU base\n"); + return; + } + + apmu_base = ioremap(apmu_phys, SZ_4K); + if (!apmu_base) { + pr_err("error to ioremap APMU base\n"); + return; + } + + apbc_base = ioremap(apbc_phys, SZ_4K); + if (!apbc_base) { + pr_err("error to ioremap APBC base\n"); + return; + } + + clk = clk_register_fixed_rate(NULL, "clk32", NULL, 0, 3200); + clk_register_clkdev(clk, "clk32", NULL); + + clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, 0, 26000000); + clk_register_clkdev(clk, "vctcxo", NULL); + + clk = clk_register_fixed_rate(NULL, "pll1", NULL, 0, 624000000); + clk_register_clkdev(clk, "pll1", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_2", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_4", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_8", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_16", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_2", + CLK_SET_RATE_PARENT, 1, 3); + clk_register_clkdev(clk, "pll1_6", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_12", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_24", "pll1_12", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_24", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_48", "pll1_24", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_48", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_96", "pll1_48", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_96", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_13", "pll1", + CLK_SET_RATE_PARENT, 1, 13); + clk_register_clkdev(clk, "pll1_13", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1", + CLK_SET_RATE_PARENT, 2, 3); + clk_register_clkdev(clk, "pll1_13_1_5", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1", + CLK_SET_RATE_PARENT, 2, 3); + clk_register_clkdev(clk, "pll1_2_1_5", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_3_16", "pll1", + CLK_SET_RATE_PARENT, 3, 16); + clk_register_clkdev(clk, "pll1_3_16", NULL); + + uart_pll = mmp_clk_register_factor("uart_pll", "pll1_4", 0, + mpmu_base + MPMU_UART_PLL, + &uart_factor_masks, uart_factor_tbl, + ARRAY_SIZE(uart_factor_tbl), &clk_lock); + clk_set_rate(uart_pll, 14745600); + clk_register_clkdev(uart_pll, "uart_pll", NULL); + + clk = mmp_clk_register_apbc("twsi0", "pll1_13_1_5", + apbc_base + APBC_TWSI0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0"); + + clk = mmp_clk_register_apbc("twsi1", "pll1_13_1_5", + apbc_base + APBC_TWSI1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1"); + + clk = mmp_clk_register_apbc("gpio", "vctcxo", + apbc_base + APBC_GPIO, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-gpio"); + + clk = mmp_clk_register_apbc("kpc", "clk32", + apbc_base + APBC_KPC, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa27x-keypad"); + + clk = mmp_clk_register_apbc("rtc", "clk32", + apbc_base + APBC_RTC, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "sa1100-rtc"); + + clk = mmp_clk_register_apbc("pwm0", "pll1_48", + apbc_base + APBC_PWM0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa168-pwm.0"); + + clk = mmp_clk_register_apbc("pwm1", "pll1_48", + apbc_base + APBC_PWM1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa168-pwm.1"); + + clk = mmp_clk_register_apbc("pwm2", "pll1_48", + apbc_base + APBC_PWM2, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa168-pwm.2"); + + clk = mmp_clk_register_apbc("pwm3", "pll1_48", + apbc_base + APBC_PWM3, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa168-pwm.3"); + + clk = clk_register_mux(NULL, "uart0_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_UART0, 4, 3, 0, &clk_lock); + clk_set_parent(clk, uart_pll); + clk_register_clkdev(clk, "uart_mux.0", NULL); + + clk = mmp_clk_register_apbc("uart0", "uart0_mux", + apbc_base + APBC_UART0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.0"); + + clk = clk_register_mux(NULL, "uart1_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_UART1, 4, 3, 0, &clk_lock); + clk_set_parent(clk, uart_pll); + clk_register_clkdev(clk, "uart_mux.1", NULL); + + clk = mmp_clk_register_apbc("uart1", "uart1_mux", + apbc_base + APBC_UART1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.1"); + + clk = clk_register_mux(NULL, "uart2_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_UART2, 4, 3, 0, &clk_lock); + clk_set_parent(clk, uart_pll); + clk_register_clkdev(clk, "uart_mux.2", NULL); + + clk = mmp_clk_register_apbc("uart2", "uart2_mux", + apbc_base + APBC_UART2, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.2"); + + clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "uart_mux.0", NULL); + + clk = mmp_clk_register_apbc("ssp0", "ssp0_mux", apbc_base + APBC_SSP0, + 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.0"); + + clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "ssp_mux.1", NULL); + + clk = mmp_clk_register_apbc("ssp1", "ssp1_mux", apbc_base + APBC_SSP1, + 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.1"); + + clk = clk_register_mux(NULL, "ssp2_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP2, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "ssp_mux.2", NULL); + + clk = mmp_clk_register_apbc("ssp2", "ssp1_mux", apbc_base + APBC_SSP2, + 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.2"); + + clk = clk_register_mux(NULL, "ssp3_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP3, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "ssp_mux.3", NULL); + + clk = mmp_clk_register_apbc("ssp3", "ssp1_mux", apbc_base + APBC_SSP3, + 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.3"); + + clk = clk_register_mux(NULL, "ssp4_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP4, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "ssp_mux.4", NULL); + + clk = mmp_clk_register_apbc("ssp4", "ssp1_mux", apbc_base + APBC_SSP4, + 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.4"); + + clk = mmp_clk_register_apmu("dfc", "pll1_4", apmu_base + APMU_DFC, + 0x19b, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa3xx-nand.0"); + + clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent, + ARRAY_SIZE(sdh_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock); + clk_register_clkdev(clk, "sdh0_mux", NULL); + + clk = mmp_clk_register_apmu("sdh0", "sdh_mux", apmu_base + APMU_SDH0, + 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "sdhci-pxa.0"); + + clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent, + ARRAY_SIZE(sdh_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock); + clk_register_clkdev(clk, "sdh1_mux", NULL); + + clk = mmp_clk_register_apmu("sdh1", "sdh1_mux", apmu_base + APMU_SDH1, + 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "sdhci-pxa.1"); + + clk = mmp_clk_register_apmu("usb", "usb_pll", apmu_base + APMU_USB, + 0x9, &clk_lock); + clk_register_clkdev(clk, "usb_clk", NULL); + + clk = mmp_clk_register_apmu("sph", "usb_pll", apmu_base + APMU_USB, + 0x12, &clk_lock); + clk_register_clkdev(clk, "sph_clk", NULL); + + clk = clk_register_mux(NULL, "disp0_mux", disp_parent, + ARRAY_SIZE(disp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock); + clk_register_clkdev(clk, "disp_mux.0", NULL); + + clk = mmp_clk_register_apmu("disp0", "disp0_mux", + apmu_base + APMU_DISP0, 0x1b, &clk_lock); + clk_register_clkdev(clk, "fnclk", "mmp-disp.0"); + + clk = mmp_clk_register_apmu("disp0_hclk", "disp0_mux", + apmu_base + APMU_DISP0, 0x24, &clk_lock); + clk_register_clkdev(clk, "hclk", "mmp-disp.0"); + + clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent, + ARRAY_SIZE(ccic_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock); + clk_register_clkdev(clk, "ccic_mux.0", NULL); + + clk = mmp_clk_register_apmu("ccic0", "ccic0_mux", + apmu_base + APMU_CCIC0, 0x1b, &clk_lock); + clk_register_clkdev(clk, "fnclk", "mmp-ccic.0"); + + clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent, + ARRAY_SIZE(ccic_phy_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_CCIC0, 7, 1, 0, &clk_lock); + clk_register_clkdev(clk, "ccic_phy_mux.0", NULL); + + clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux", + apmu_base + APMU_CCIC0, 0x24, &clk_lock); + clk_register_clkdev(clk, "phyclk", "mmp-ccic.0"); + + clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux", + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0, + 10, 5, 0, &clk_lock); + clk_register_clkdev(clk, "sphyclk_div", NULL); + + clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div", + apmu_base + APMU_CCIC0, 0x300, &clk_lock); + clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0"); +} diff --git a/drivers/clk/mmp/clk-pxa910.c b/drivers/clk/mmp/clk-pxa910.c new file mode 100644 index 000000000..9fcd76316 --- /dev/null +++ b/drivers/clk/mmp/clk-pxa910.c @@ -0,0 +1,325 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * pxa910 clock framework source file + * + * Copyright (C) 2012 Marvell + * Chao Xie <xiechao.mail@gmail.com> + */ + +#include <linux/clk.h> +#include <linux/clk/mmp.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/err.h> + +#include "clk.h" + +#define APBC_RTC 0x28 +#define APBC_TWSI0 0x2c +#define APBC_KPC 0x18 +#define APBC_UART0 0x0 +#define APBC_UART1 0x4 +#define APBC_GPIO 0x8 +#define APBC_PWM0 0xc +#define APBC_PWM1 0x10 +#define APBC_PWM2 0x14 +#define APBC_PWM3 0x18 +#define APBC_SSP0 0x1c +#define APBC_SSP1 0x20 +#define APBC_SSP2 0x4c +#define APBCP_TWSI1 0x28 +#define APBCP_UART2 0x1c +#define APMU_SDH0 0x54 +#define APMU_SDH1 0x58 +#define APMU_USB 0x5c +#define APMU_DISP0 0x4c +#define APMU_CCIC0 0x50 +#define APMU_DFC 0x60 +#define MPMU_UART_PLL 0x14 + +static DEFINE_SPINLOCK(clk_lock); + +static struct mmp_clk_factor_masks uart_factor_masks = { + .factor = 2, + .num_mask = 0x1fff, + .den_mask = 0x1fff, + .num_shift = 16, + .den_shift = 0, +}; + +static struct mmp_clk_factor_tbl uart_factor_tbl[] = { + {.num = 8125, .den = 1536}, /*14.745MHZ */ +}; + +static const char *uart_parent[] = {"pll1_3_16", "uart_pll"}; +static const char *ssp_parent[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"}; +static const char *sdh_parent[] = {"pll1_12", "pll1_13"}; +static const char *disp_parent[] = {"pll1_2", "pll1_12"}; +static const char *ccic_parent[] = {"pll1_2", "pll1_12"}; +static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"}; + +void __init pxa910_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys, + phys_addr_t apbc_phys, phys_addr_t apbcp_phys) +{ + struct clk *clk; + struct clk *uart_pll; + void __iomem *mpmu_base; + void __iomem *apmu_base; + void __iomem *apbcp_base; + void __iomem *apbc_base; + + mpmu_base = ioremap(mpmu_phys, SZ_4K); + if (!mpmu_base) { + pr_err("error to ioremap MPMU base\n"); + return; + } + + apmu_base = ioremap(apmu_phys, SZ_4K); + if (!apmu_base) { + pr_err("error to ioremap APMU base\n"); + return; + } + + apbcp_base = ioremap(apbcp_phys, SZ_4K); + if (!apbcp_base) { + pr_err("error to ioremap APBC extension base\n"); + return; + } + + apbc_base = ioremap(apbc_phys, SZ_4K); + if (!apbc_base) { + pr_err("error to ioremap APBC base\n"); + return; + } + + clk = clk_register_fixed_rate(NULL, "clk32", NULL, 0, 3200); + clk_register_clkdev(clk, "clk32", NULL); + + clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, 0, 26000000); + clk_register_clkdev(clk, "vctcxo", NULL); + + clk = clk_register_fixed_rate(NULL, "pll1", NULL, 0, 624000000); + clk_register_clkdev(clk, "pll1", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_2", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_4", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_8", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_16", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_2", + CLK_SET_RATE_PARENT, 1, 3); + clk_register_clkdev(clk, "pll1_6", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_12", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_24", "pll1_12", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_24", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_48", "pll1_24", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_48", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_96", "pll1_48", + CLK_SET_RATE_PARENT, 1, 2); + clk_register_clkdev(clk, "pll1_96", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_13", "pll1", + CLK_SET_RATE_PARENT, 1, 13); + clk_register_clkdev(clk, "pll1_13", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1", + CLK_SET_RATE_PARENT, 2, 3); + clk_register_clkdev(clk, "pll1_13_1_5", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1", + CLK_SET_RATE_PARENT, 2, 3); + clk_register_clkdev(clk, "pll1_2_1_5", NULL); + + clk = clk_register_fixed_factor(NULL, "pll1_3_16", "pll1", + CLK_SET_RATE_PARENT, 3, 16); + clk_register_clkdev(clk, "pll1_3_16", NULL); + + uart_pll = mmp_clk_register_factor("uart_pll", "pll1_4", 0, + mpmu_base + MPMU_UART_PLL, + &uart_factor_masks, uart_factor_tbl, + ARRAY_SIZE(uart_factor_tbl), &clk_lock); + clk_set_rate(uart_pll, 14745600); + clk_register_clkdev(uart_pll, "uart_pll", NULL); + + clk = mmp_clk_register_apbc("twsi0", "pll1_13_1_5", + apbc_base + APBC_TWSI0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0"); + + clk = mmp_clk_register_apbc("twsi1", "pll1_13_1_5", + apbcp_base + APBCP_TWSI1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1"); + + clk = mmp_clk_register_apbc("gpio", "vctcxo", + apbc_base + APBC_GPIO, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-gpio"); + + clk = mmp_clk_register_apbc("kpc", "clk32", + apbc_base + APBC_KPC, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa27x-keypad"); + + clk = mmp_clk_register_apbc("rtc", "clk32", + apbc_base + APBC_RTC, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "sa1100-rtc"); + + clk = mmp_clk_register_apbc("pwm0", "pll1_48", + apbc_base + APBC_PWM0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa910-pwm.0"); + + clk = mmp_clk_register_apbc("pwm1", "pll1_48", + apbc_base + APBC_PWM1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa910-pwm.1"); + + clk = mmp_clk_register_apbc("pwm2", "pll1_48", + apbc_base + APBC_PWM2, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa910-pwm.2"); + + clk = mmp_clk_register_apbc("pwm3", "pll1_48", + apbc_base + APBC_PWM3, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa910-pwm.3"); + + clk = clk_register_mux(NULL, "uart0_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_UART0, 4, 3, 0, &clk_lock); + clk_set_parent(clk, uart_pll); + clk_register_clkdev(clk, "uart_mux.0", NULL); + + clk = mmp_clk_register_apbc("uart0", "uart0_mux", + apbc_base + APBC_UART0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.0"); + + clk = clk_register_mux(NULL, "uart1_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_UART1, 4, 3, 0, &clk_lock); + clk_set_parent(clk, uart_pll); + clk_register_clkdev(clk, "uart_mux.1", NULL); + + clk = mmp_clk_register_apbc("uart1", "uart1_mux", + apbc_base + APBC_UART1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.1"); + + clk = clk_register_mux(NULL, "uart2_mux", uart_parent, + ARRAY_SIZE(uart_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbcp_base + APBCP_UART2, 4, 3, 0, &clk_lock); + clk_set_parent(clk, uart_pll); + clk_register_clkdev(clk, "uart_mux.2", NULL); + + clk = mmp_clk_register_apbc("uart2", "uart2_mux", + apbcp_base + APBCP_UART2, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa2xx-uart.2"); + + clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "uart_mux.0", NULL); + + clk = mmp_clk_register_apbc("ssp0", "ssp0_mux", + apbc_base + APBC_SSP0, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.0"); + + clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent, + ARRAY_SIZE(ssp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock); + clk_register_clkdev(clk, "ssp_mux.1", NULL); + + clk = mmp_clk_register_apbc("ssp1", "ssp1_mux", + apbc_base + APBC_SSP1, 10, 0, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-ssp.1"); + + clk = mmp_clk_register_apmu("dfc", "pll1_4", + apmu_base + APMU_DFC, 0x19b, &clk_lock); + clk_register_clkdev(clk, NULL, "pxa3xx-nand.0"); + + clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent, + ARRAY_SIZE(sdh_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock); + clk_register_clkdev(clk, "sdh0_mux", NULL); + + clk = mmp_clk_register_apmu("sdh0", "sdh_mux", + apmu_base + APMU_SDH0, 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "sdhci-pxa.0"); + + clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent, + ARRAY_SIZE(sdh_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock); + clk_register_clkdev(clk, "sdh1_mux", NULL); + + clk = mmp_clk_register_apmu("sdh1", "sdh1_mux", + apmu_base + APMU_SDH1, 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "sdhci-pxa.1"); + + clk = mmp_clk_register_apmu("usb", "usb_pll", + apmu_base + APMU_USB, 0x9, &clk_lock); + clk_register_clkdev(clk, "usb_clk", NULL); + + clk = mmp_clk_register_apmu("sph", "usb_pll", + apmu_base + APMU_USB, 0x12, &clk_lock); + clk_register_clkdev(clk, "sph_clk", NULL); + + clk = clk_register_mux(NULL, "disp0_mux", disp_parent, + ARRAY_SIZE(disp_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock); + clk_register_clkdev(clk, "disp_mux.0", NULL); + + clk = mmp_clk_register_apmu("disp0", "disp0_mux", + apmu_base + APMU_DISP0, 0x1b, &clk_lock); + clk_register_clkdev(clk, NULL, "mmp-disp.0"); + + clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent, + ARRAY_SIZE(ccic_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock); + clk_register_clkdev(clk, "ccic_mux.0", NULL); + + clk = mmp_clk_register_apmu("ccic0", "ccic0_mux", + apmu_base + APMU_CCIC0, 0x1b, &clk_lock); + clk_register_clkdev(clk, "fnclk", "mmp-ccic.0"); + + clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent, + ARRAY_SIZE(ccic_phy_parent), + CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT, + apmu_base + APMU_CCIC0, 7, 1, 0, &clk_lock); + clk_register_clkdev(clk, "ccic_phy_mux.0", NULL); + + clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux", + apmu_base + APMU_CCIC0, 0x24, &clk_lock); + clk_register_clkdev(clk, "phyclk", "mmp-ccic.0"); + + clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux", + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0, + 10, 5, 0, &clk_lock); + clk_register_clkdev(clk, "sphyclk_div", NULL); + + clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div", + apmu_base + APMU_CCIC0, 0x300, &clk_lock); + clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0"); +} diff --git a/drivers/clk/mmp/clk.c b/drivers/clk/mmp/clk.c new file mode 100644 index 000000000..ca7d37e2c --- /dev/null +++ b/drivers/clk/mmp/clk.c @@ -0,0 +1,192 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/io.h> +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_address.h> + +#include "clk.h" + +void mmp_clk_init(struct device_node *np, struct mmp_clk_unit *unit, + int nr_clks) +{ + struct clk **clk_table; + + clk_table = kcalloc(nr_clks, sizeof(struct clk *), GFP_KERNEL); + if (!clk_table) + return; + + unit->clk_table = clk_table; + unit->nr_clks = nr_clks; + unit->clk_data.clks = clk_table; + unit->clk_data.clk_num = nr_clks; + of_clk_add_provider(np, of_clk_src_onecell_get, &unit->clk_data); +} + +void mmp_register_fixed_rate_clks(struct mmp_clk_unit *unit, + struct mmp_param_fixed_rate_clk *clks, + int size) +{ + int i; + struct clk *clk; + + for (i = 0; i < size; i++) { + clk = clk_register_fixed_rate(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + clks[i].fixed_rate); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + if (clks[i].id) + unit->clk_table[clks[i].id] = clk; + } +} + +void mmp_register_fixed_factor_clks(struct mmp_clk_unit *unit, + struct mmp_param_fixed_factor_clk *clks, + int size) +{ + struct clk *clk; + int i; + + for (i = 0; i < size; i++) { + clk = clk_register_fixed_factor(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, clks[i].mult, + clks[i].div); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + if (clks[i].id) + unit->clk_table[clks[i].id] = clk; + } +} + +void mmp_register_general_gate_clks(struct mmp_clk_unit *unit, + struct mmp_param_general_gate_clk *clks, + void __iomem *base, int size) +{ + struct clk *clk; + int i; + + for (i = 0; i < size; i++) { + clk = clk_register_gate(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + base + clks[i].offset, + clks[i].bit_idx, + clks[i].gate_flags, + clks[i].lock); + + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + if (clks[i].id) + unit->clk_table[clks[i].id] = clk; + } +} + +void mmp_register_gate_clks(struct mmp_clk_unit *unit, + struct mmp_param_gate_clk *clks, + void __iomem *base, int size) +{ + struct clk *clk; + int i; + + for (i = 0; i < size; i++) { + clk = mmp_clk_register_gate(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + base + clks[i].offset, + clks[i].mask, + clks[i].val_enable, + clks[i].val_disable, + clks[i].gate_flags, + clks[i].lock); + + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + if (clks[i].id) + unit->clk_table[clks[i].id] = clk; + } +} + +void mmp_register_mux_clks(struct mmp_clk_unit *unit, + struct mmp_param_mux_clk *clks, + void __iomem *base, int size) +{ + struct clk *clk; + int i; + + for (i = 0; i < size; i++) { + clk = clk_register_mux(NULL, clks[i].name, + clks[i].parent_name, + clks[i].num_parents, + clks[i].flags, + base + clks[i].offset, + clks[i].shift, + clks[i].width, + clks[i].mux_flags, + clks[i].lock); + + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + if (clks[i].id) + unit->clk_table[clks[i].id] = clk; + } +} + +void mmp_register_div_clks(struct mmp_clk_unit *unit, + struct mmp_param_div_clk *clks, + void __iomem *base, int size) +{ + struct clk *clk; + int i; + + for (i = 0; i < size; i++) { + clk = clk_register_divider(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + base + clks[i].offset, + clks[i].shift, + clks[i].width, + clks[i].div_flags, + clks[i].lock); + + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + if (clks[i].id) + unit->clk_table[clks[i].id] = clk; + } +} + +void mmp_clk_add(struct mmp_clk_unit *unit, unsigned int id, + struct clk *clk) +{ + if (IS_ERR_OR_NULL(clk)) { + pr_err("CLK %d has invalid pointer %p\n", id, clk); + return; + } + if (id >= unit->nr_clks) { + pr_err("CLK %d is invalid\n", id); + return; + } + + unit->clk_table[id] = clk; +} diff --git a/drivers/clk/mmp/clk.h b/drivers/clk/mmp/clk.h new file mode 100644 index 000000000..55ac05379 --- /dev/null +++ b/drivers/clk/mmp/clk.h @@ -0,0 +1,265 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __MACH_MMP_CLK_H +#define __MACH_MMP_CLK_H + +#include <linux/clk-provider.h> +#include <linux/pm_domain.h> +#include <linux/clkdev.h> + +#define APBC_NO_BUS_CTRL BIT(0) +#define APBC_POWER_CTRL BIT(1) + + +/* Clock type "factor" */ +struct mmp_clk_factor_masks { + unsigned int factor; + unsigned int num_mask; + unsigned int den_mask; + unsigned int num_shift; + unsigned int den_shift; + unsigned int enable_mask; +}; + +struct mmp_clk_factor_tbl { + unsigned int num; + unsigned int den; +}; + +struct mmp_clk_factor { + struct clk_hw hw; + void __iomem *base; + struct mmp_clk_factor_masks *masks; + struct mmp_clk_factor_tbl *ftbl; + unsigned int ftbl_cnt; + spinlock_t *lock; +}; + +extern struct clk *mmp_clk_register_factor(const char *name, + const char *parent_name, unsigned long flags, + void __iomem *base, struct mmp_clk_factor_masks *masks, + struct mmp_clk_factor_tbl *ftbl, unsigned int ftbl_cnt, + spinlock_t *lock); + +/* Clock type "mix" */ +#define MMP_CLK_BITS_MASK(width, shift) \ + (((1 << (width)) - 1) << (shift)) +#define MMP_CLK_BITS_GET_VAL(data, width, shift) \ + ((data & MMP_CLK_BITS_MASK(width, shift)) >> (shift)) +#define MMP_CLK_BITS_SET_VAL(val, width, shift) \ + (((val) << (shift)) & MMP_CLK_BITS_MASK(width, shift)) + +enum { + MMP_CLK_MIX_TYPE_V1, + MMP_CLK_MIX_TYPE_V2, + MMP_CLK_MIX_TYPE_V3, +}; + +/* The register layout */ +struct mmp_clk_mix_reg_info { + void __iomem *reg_clk_ctrl; + void __iomem *reg_clk_sel; + u8 width_div; + u8 shift_div; + u8 width_mux; + u8 shift_mux; + u8 bit_fc; +}; + +/* The suggested clock table from user. */ +struct mmp_clk_mix_clk_table { + unsigned long rate; + u8 parent_index; + unsigned int divisor; + unsigned int valid; +}; + +struct mmp_clk_mix_config { + struct mmp_clk_mix_reg_info reg_info; + struct mmp_clk_mix_clk_table *table; + unsigned int table_size; + u32 *mux_table; + struct clk_div_table *div_table; + u8 div_flags; + u8 mux_flags; +}; + +struct mmp_clk_mix { + struct clk_hw hw; + struct mmp_clk_mix_reg_info reg_info; + struct mmp_clk_mix_clk_table *table; + u32 *mux_table; + struct clk_div_table *div_table; + unsigned int table_size; + u8 div_flags; + u8 mux_flags; + unsigned int type; + spinlock_t *lock; +}; + +extern const struct clk_ops mmp_clk_mix_ops; +extern struct clk *mmp_clk_register_mix(struct device *dev, + const char *name, + const char * const *parent_names, + u8 num_parents, + unsigned long flags, + struct mmp_clk_mix_config *config, + spinlock_t *lock); + + +/* Clock type "gate". MMP private gate */ +#define MMP_CLK_GATE_NEED_DELAY BIT(0) + +struct mmp_clk_gate { + struct clk_hw hw; + void __iomem *reg; + u32 mask; + u32 val_enable; + u32 val_disable; + unsigned int flags; + spinlock_t *lock; +}; + +extern const struct clk_ops mmp_clk_gate_ops; +extern struct clk *mmp_clk_register_gate(struct device *dev, const char *name, + const char *parent_name, unsigned long flags, + void __iomem *reg, u32 mask, u32 val_enable, + u32 val_disable, unsigned int gate_flags, + spinlock_t *lock); + +extern struct clk *mmp_clk_register_apbc(const char *name, + const char *parent_name, void __iomem *base, + unsigned int delay, unsigned int apbc_flags, spinlock_t *lock); +extern struct clk *mmp_clk_register_apmu(const char *name, + const char *parent_name, void __iomem *base, u32 enable_mask, + spinlock_t *lock); + +struct mmp_clk_unit { + unsigned int nr_clks; + struct clk **clk_table; + struct clk_onecell_data clk_data; +}; + +struct mmp_param_fixed_rate_clk { + unsigned int id; + char *name; + const char *parent_name; + unsigned long flags; + unsigned long fixed_rate; +}; +void mmp_register_fixed_rate_clks(struct mmp_clk_unit *unit, + struct mmp_param_fixed_rate_clk *clks, + int size); + +struct mmp_param_fixed_factor_clk { + unsigned int id; + char *name; + const char *parent_name; + unsigned long mult; + unsigned long div; + unsigned long flags; +}; +void mmp_register_fixed_factor_clks(struct mmp_clk_unit *unit, + struct mmp_param_fixed_factor_clk *clks, + int size); + +struct mmp_param_general_gate_clk { + unsigned int id; + const char *name; + const char *parent_name; + unsigned long flags; + unsigned long offset; + u8 bit_idx; + u8 gate_flags; + spinlock_t *lock; +}; +void mmp_register_general_gate_clks(struct mmp_clk_unit *unit, + struct mmp_param_general_gate_clk *clks, + void __iomem *base, int size); + +struct mmp_param_gate_clk { + unsigned int id; + char *name; + const char *parent_name; + unsigned long flags; + unsigned long offset; + u32 mask; + u32 val_enable; + u32 val_disable; + unsigned int gate_flags; + spinlock_t *lock; +}; +void mmp_register_gate_clks(struct mmp_clk_unit *unit, + struct mmp_param_gate_clk *clks, + void __iomem *base, int size); + +struct mmp_param_mux_clk { + unsigned int id; + char *name; + const char * const *parent_name; + u8 num_parents; + unsigned long flags; + unsigned long offset; + u8 shift; + u8 width; + u8 mux_flags; + spinlock_t *lock; +}; +void mmp_register_mux_clks(struct mmp_clk_unit *unit, + struct mmp_param_mux_clk *clks, + void __iomem *base, int size); + +struct mmp_param_div_clk { + unsigned int id; + char *name; + const char *parent_name; + unsigned long flags; + unsigned long offset; + u8 shift; + u8 width; + u8 div_flags; + spinlock_t *lock; +}; +void mmp_register_div_clks(struct mmp_clk_unit *unit, + struct mmp_param_div_clk *clks, + void __iomem *base, int size); + +struct mmp_param_pll_clk { + unsigned int id; + char *name; + unsigned long default_rate; + unsigned long enable_offset; + u32 enable; + unsigned long offset; + u8 shift; + /* MMP3 specific: */ + unsigned long input_rate; + unsigned long postdiv_offset; + unsigned long postdiv_shift; +}; +void mmp_register_pll_clks(struct mmp_clk_unit *unit, + struct mmp_param_pll_clk *clks, + void __iomem *base, int size); + +#define DEFINE_MIX_REG_INFO(w_d, s_d, w_m, s_m, fc) \ +{ \ + .width_div = (w_d), \ + .shift_div = (s_d), \ + .width_mux = (w_m), \ + .shift_mux = (s_m), \ + .bit_fc = (fc), \ +} + +void mmp_clk_init(struct device_node *np, struct mmp_clk_unit *unit, + int nr_clks); +void mmp_clk_add(struct mmp_clk_unit *unit, unsigned int id, + struct clk *clk); + +/* Power islands */ +#define MMP_PM_DOMAIN_NO_DISABLE BIT(0) + +struct generic_pm_domain *mmp_pm_domain_register(const char *name, + void __iomem *reg, + u32 power_on, u32 reset, u32 clock_enable, + unsigned int flags, spinlock_t *lock); + +#endif diff --git a/drivers/clk/mmp/pwr-island.c b/drivers/clk/mmp/pwr-island.c new file mode 100644 index 000000000..edaa2433a --- /dev/null +++ b/drivers/clk/mmp/pwr-island.c @@ -0,0 +1,115 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * MMP PMU power island support + * + * Copyright (C) 2020 Lubomir Rintel <lkundrak@v3.sk> + */ + +#include <linux/pm_domain.h> +#include <linux/slab.h> +#include <linux/io.h> + +#include "clk.h" + +#define to_mmp_pm_domain(genpd) container_of(genpd, struct mmp_pm_domain, genpd) + +struct mmp_pm_domain { + struct generic_pm_domain genpd; + void __iomem *reg; + spinlock_t *lock; + u32 power_on; + u32 reset; + u32 clock_enable; + unsigned int flags; +}; + +static int mmp_pm_domain_power_on(struct generic_pm_domain *genpd) +{ + struct mmp_pm_domain *pm_domain = to_mmp_pm_domain(genpd); + unsigned long flags = 0; + u32 val; + + if (pm_domain->lock) + spin_lock_irqsave(pm_domain->lock, flags); + + val = readl(pm_domain->reg); + + /* Turn on the power island */ + val |= pm_domain->power_on; + writel(val, pm_domain->reg); + + /* Disable isolation */ + val |= 0x100; + writel(val, pm_domain->reg); + + /* Some blocks need to be reset after a power up */ + if (pm_domain->reset || pm_domain->clock_enable) { + u32 after_power_on = val; + + val &= ~pm_domain->reset; + writel(val, pm_domain->reg); + + val |= pm_domain->clock_enable; + writel(val, pm_domain->reg); + + val |= pm_domain->reset; + writel(val, pm_domain->reg); + + writel(after_power_on, pm_domain->reg); + } + + if (pm_domain->lock) + spin_unlock_irqrestore(pm_domain->lock, flags); + + return 0; +} + +static int mmp_pm_domain_power_off(struct generic_pm_domain *genpd) +{ + struct mmp_pm_domain *pm_domain = to_mmp_pm_domain(genpd); + unsigned long flags = 0; + u32 val; + + if (pm_domain->flags & MMP_PM_DOMAIN_NO_DISABLE) + return 0; + + if (pm_domain->lock) + spin_lock_irqsave(pm_domain->lock, flags); + + /* Turn off and isolate the power island. */ + val = readl(pm_domain->reg); + val &= ~pm_domain->power_on; + val &= ~0x100; + writel(val, pm_domain->reg); + + if (pm_domain->lock) + spin_unlock_irqrestore(pm_domain->lock, flags); + + return 0; +} + +struct generic_pm_domain *mmp_pm_domain_register(const char *name, + void __iomem *reg, + u32 power_on, u32 reset, u32 clock_enable, + unsigned int flags, spinlock_t *lock) +{ + struct mmp_pm_domain *pm_domain; + + pm_domain = kzalloc(sizeof(*pm_domain), GFP_KERNEL); + if (!pm_domain) + return ERR_PTR(-ENOMEM); + + pm_domain->reg = reg; + pm_domain->power_on = power_on; + pm_domain->reset = reset; + pm_domain->clock_enable = clock_enable; + pm_domain->flags = flags; + pm_domain->lock = lock; + + pm_genpd_init(&pm_domain->genpd, NULL, true); + pm_domain->genpd.name = name; + pm_domain->genpd.power_on = mmp_pm_domain_power_on; + pm_domain->genpd.power_off = mmp_pm_domain_power_off; + + return &pm_domain->genpd; +} diff --git a/drivers/clk/mmp/reset.c b/drivers/clk/mmp/reset.c new file mode 100644 index 000000000..ded7e391c --- /dev/null +++ b/drivers/clk/mmp/reset.c @@ -0,0 +1,100 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/reset-controller.h> + +#include "reset.h" + +#define rcdev_to_unit(rcdev) container_of(rcdev, struct mmp_clk_reset_unit, rcdev) + +static int mmp_of_reset_xlate(struct reset_controller_dev *rcdev, + const struct of_phandle_args *reset_spec) +{ + struct mmp_clk_reset_unit *unit = rcdev_to_unit(rcdev); + struct mmp_clk_reset_cell *cell; + int i; + + if (WARN_ON(reset_spec->args_count != rcdev->of_reset_n_cells)) + return -EINVAL; + + for (i = 0; i < rcdev->nr_resets; i++) { + cell = &unit->cells[i]; + if (cell->clk_id == reset_spec->args[0]) + break; + } + + if (i == rcdev->nr_resets) + return -EINVAL; + + return i; +} + +static int mmp_clk_reset_assert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct mmp_clk_reset_unit *unit = rcdev_to_unit(rcdev); + struct mmp_clk_reset_cell *cell; + unsigned long flags = 0; + u32 val; + + cell = &unit->cells[id]; + if (cell->lock) + spin_lock_irqsave(cell->lock, flags); + + val = readl(cell->reg); + val |= cell->bits; + writel(val, cell->reg); + + if (cell->lock) + spin_unlock_irqrestore(cell->lock, flags); + + return 0; +} + +static int mmp_clk_reset_deassert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct mmp_clk_reset_unit *unit = rcdev_to_unit(rcdev); + struct mmp_clk_reset_cell *cell; + unsigned long flags = 0; + u32 val; + + cell = &unit->cells[id]; + if (cell->lock) + spin_lock_irqsave(cell->lock, flags); + + val = readl(cell->reg); + val &= ~cell->bits; + writel(val, cell->reg); + + if (cell->lock) + spin_unlock_irqrestore(cell->lock, flags); + + return 0; +} + +static const struct reset_control_ops mmp_clk_reset_ops = { + .assert = mmp_clk_reset_assert, + .deassert = mmp_clk_reset_deassert, +}; + +void mmp_clk_reset_register(struct device_node *np, + struct mmp_clk_reset_cell *cells, int nr_resets) +{ + struct mmp_clk_reset_unit *unit; + + unit = kzalloc(sizeof(*unit), GFP_KERNEL); + if (!unit) + return; + + unit->cells = cells; + unit->rcdev.of_reset_n_cells = 1; + unit->rcdev.nr_resets = nr_resets; + unit->rcdev.ops = &mmp_clk_reset_ops; + unit->rcdev.of_node = np; + unit->rcdev.of_xlate = mmp_of_reset_xlate; + + reset_controller_register(&unit->rcdev); +} diff --git a/drivers/clk/mmp/reset.h b/drivers/clk/mmp/reset.h new file mode 100644 index 000000000..3d0470ca3 --- /dev/null +++ b/drivers/clk/mmp/reset.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __MACH_MMP_CLK_RESET_H +#define __MACH_MMP_CLK_RESET_H + +#include <linux/reset-controller.h> + +#define MMP_RESET_INVERT 1 + +struct mmp_clk_reset_cell { + unsigned int clk_id; + void __iomem *reg; + u32 bits; + unsigned int flags; + spinlock_t *lock; +}; + +struct mmp_clk_reset_unit { + struct reset_controller_dev rcdev; + struct mmp_clk_reset_cell *cells; +}; + +#ifdef CONFIG_RESET_CONTROLLER +void mmp_clk_reset_register(struct device_node *np, + struct mmp_clk_reset_cell *cells, int nr_resets); +#else +static inline void mmp_clk_reset_register(struct device_node *np, + struct mmp_clk_reset_cell *cells, int nr_resets) +{ +} +#endif + +#endif |