diff options
Diffstat (limited to 'drivers/clk/clk-npcm7xx.c')
| -rw-r--r-- | drivers/clk/clk-npcm7xx.c | 519 |
1 files changed, 519 insertions, 0 deletions
diff --git a/drivers/clk/clk-npcm7xx.c b/drivers/clk/clk-npcm7xx.c new file mode 100644 index 000000000..030186def --- /dev/null +++ b/drivers/clk/clk-npcm7xx.c @@ -0,0 +1,519 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Nuvoton NPCM7xx Clock Generator + * All the clocks are initialized by the bootloader, so this driver allow only + * reading of current settings directly from the hardware. + * + * Copyright (C) 2018 Nuvoton Technologies tali.perry@nuvoton.com + */ + +#include <linux/module.h> +#include <linux/clk-provider.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/slab.h> +#include <linux/err.h> +#include <linux/bitfield.h> + +#include <dt-bindings/clock/nuvoton,npcm7xx-clock.h> + +struct npcm7xx_clk_pll { + struct clk_hw hw; + void __iomem *pllcon; + u8 flags; +}; + +#define to_npcm7xx_clk_pll(_hw) container_of(_hw, struct npcm7xx_clk_pll, hw) + +#define PLLCON_LOKI BIT(31) +#define PLLCON_LOKS BIT(30) +#define PLLCON_FBDV GENMASK(27, 16) +#define PLLCON_OTDV2 GENMASK(15, 13) +#define PLLCON_PWDEN BIT(12) +#define PLLCON_OTDV1 GENMASK(10, 8) +#define PLLCON_INDV GENMASK(5, 0) + +static unsigned long npcm7xx_clk_pll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct npcm7xx_clk_pll *pll = to_npcm7xx_clk_pll(hw); + unsigned long fbdv, indv, otdv1, otdv2; + unsigned int val; + u64 ret; + + if (parent_rate == 0) { + pr_err("%s: parent rate is zero", __func__); + return 0; + } + + val = readl_relaxed(pll->pllcon); + + indv = FIELD_GET(PLLCON_INDV, val); + fbdv = FIELD_GET(PLLCON_FBDV, val); + otdv1 = FIELD_GET(PLLCON_OTDV1, val); + otdv2 = FIELD_GET(PLLCON_OTDV2, val); + + ret = (u64)parent_rate * fbdv; + do_div(ret, indv * otdv1 * otdv2); + + return ret; +} + +static const struct clk_ops npcm7xx_clk_pll_ops = { + .recalc_rate = npcm7xx_clk_pll_recalc_rate, +}; + +static struct clk_hw * +npcm7xx_clk_register_pll(void __iomem *pllcon, const char *name, + const char *parent_name, unsigned long flags) +{ + struct npcm7xx_clk_pll *pll; + struct clk_init_data init; + struct clk_hw *hw; + int ret; + + pll = kzalloc(sizeof(*pll), GFP_KERNEL); + if (!pll) + return ERR_PTR(-ENOMEM); + + pr_debug("%s reg, name=%s, p=%s\n", __func__, name, parent_name); + + init.name = name; + init.ops = &npcm7xx_clk_pll_ops; + init.parent_names = &parent_name; + init.num_parents = 1; + init.flags = flags; + + pll->pllcon = pllcon; + pll->hw.init = &init; + + hw = &pll->hw; + + ret = clk_hw_register(NULL, hw); + if (ret) { + kfree(pll); + hw = ERR_PTR(ret); + } + + return hw; +} + +#define NPCM7XX_CLKEN1 (0x00) +#define NPCM7XX_CLKEN2 (0x28) +#define NPCM7XX_CLKEN3 (0x30) +#define NPCM7XX_CLKSEL (0x04) +#define NPCM7XX_CLKDIV1 (0x08) +#define NPCM7XX_CLKDIV2 (0x2C) +#define NPCM7XX_CLKDIV3 (0x58) +#define NPCM7XX_PLLCON0 (0x0C) +#define NPCM7XX_PLLCON1 (0x10) +#define NPCM7XX_PLLCON2 (0x54) +#define NPCM7XX_SWRSTR (0x14) +#define NPCM7XX_IRQWAKECON (0x18) +#define NPCM7XX_IRQWAKEFLAG (0x1C) +#define NPCM7XX_IPSRST1 (0x20) +#define NPCM7XX_IPSRST2 (0x24) +#define NPCM7XX_IPSRST3 (0x34) +#define NPCM7XX_WD0RCR (0x38) +#define NPCM7XX_WD1RCR (0x3C) +#define NPCM7XX_WD2RCR (0x40) +#define NPCM7XX_SWRSTC1 (0x44) +#define NPCM7XX_SWRSTC2 (0x48) +#define NPCM7XX_SWRSTC3 (0x4C) +#define NPCM7XX_SWRSTC4 (0x50) +#define NPCM7XX_CORSTC (0x5C) +#define NPCM7XX_PLLCONG (0x60) +#define NPCM7XX_AHBCKFI (0x64) +#define NPCM7XX_SECCNT (0x68) +#define NPCM7XX_CNTR25M (0x6C) + +struct npcm7xx_clk_mux_data { + u8 shift; + u8 mask; + u32 *table; + const char *name; + const char * const *parent_names; + u8 num_parents; + unsigned long flags; + /* + * If this clock is exported via DT, set onecell_idx to constant + * defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for + * this specific clock. Otherwise, set to -1. + */ + int onecell_idx; + +}; + +struct npcm7xx_clk_div_data { + u32 reg; + u8 shift; + u8 width; + const char *name; + const char *parent_name; + u8 clk_divider_flags; + unsigned long flags; + /* + * If this clock is exported via DT, set onecell_idx to constant + * defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for + * this specific clock. Otherwise, set to -1. + */ + int onecell_idx; +}; + +struct npcm7xx_clk_pll_data { + u32 reg; + const char *name; + const char *parent_name; + unsigned long flags; + /* + * If this clock is exported via DT, set onecell_idx to constant + * defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for + * this specific clock. Otherwise, set to -1. + */ + int onecell_idx; +}; + +/* + * Single copy of strings used to refer to clocks within this driver indexed by + * above enum. + */ +#define NPCM7XX_CLK_S_REFCLK "refclk" +#define NPCM7XX_CLK_S_SYSBYPCK "sysbypck" +#define NPCM7XX_CLK_S_MCBYPCK "mcbypck" +#define NPCM7XX_CLK_S_GFXBYPCK "gfxbypck" +#define NPCM7XX_CLK_S_PLL0 "pll0" +#define NPCM7XX_CLK_S_PLL1 "pll1" +#define NPCM7XX_CLK_S_PLL1_DIV2 "pll1_div2" +#define NPCM7XX_CLK_S_PLL2 "pll2" +#define NPCM7XX_CLK_S_PLL_GFX "pll_gfx" +#define NPCM7XX_CLK_S_PLL2_DIV2 "pll2_div2" +#define NPCM7XX_CLK_S_PIX_MUX "gfx_pixel" +#define NPCM7XX_CLK_S_GPRFSEL_MUX "gprfsel_mux" +#define NPCM7XX_CLK_S_MC_MUX "mc_phy" +#define NPCM7XX_CLK_S_CPU_MUX "cpu" /*AKA system clock.*/ +#define NPCM7XX_CLK_S_MC "mc" +#define NPCM7XX_CLK_S_AXI "axi" /*AKA CLK2*/ +#define NPCM7XX_CLK_S_AHB "ahb" /*AKA CLK4*/ +#define NPCM7XX_CLK_S_CLKOUT_MUX "clkout_mux" +#define NPCM7XX_CLK_S_UART_MUX "uart_mux" +#define NPCM7XX_CLK_S_TIM_MUX "timer_mux" +#define NPCM7XX_CLK_S_SD_MUX "sd_mux" +#define NPCM7XX_CLK_S_GFXM_MUX "gfxm_mux" +#define NPCM7XX_CLK_S_SU_MUX "serial_usb_mux" +#define NPCM7XX_CLK_S_DVC_MUX "dvc_mux" +#define NPCM7XX_CLK_S_GFX_MUX "gfx_mux" +#define NPCM7XX_CLK_S_GFX_PIXEL "gfx_pixel" +#define NPCM7XX_CLK_S_SPI0 "spi0" +#define NPCM7XX_CLK_S_SPI3 "spi3" +#define NPCM7XX_CLK_S_SPIX "spix" +#define NPCM7XX_CLK_S_APB1 "apb1" +#define NPCM7XX_CLK_S_APB2 "apb2" +#define NPCM7XX_CLK_S_APB3 "apb3" +#define NPCM7XX_CLK_S_APB4 "apb4" +#define NPCM7XX_CLK_S_APB5 "apb5" +#define NPCM7XX_CLK_S_TOCK "tock" +#define NPCM7XX_CLK_S_CLKOUT "clkout" +#define NPCM7XX_CLK_S_UART "uart" +#define NPCM7XX_CLK_S_TIMER "timer" +#define NPCM7XX_CLK_S_MMC "mmc" +#define NPCM7XX_CLK_S_SDHC "sdhc" +#define NPCM7XX_CLK_S_ADC "adc" +#define NPCM7XX_CLK_S_GFX "gfx0_gfx1_mem" +#define NPCM7XX_CLK_S_USBIF "serial_usbif" +#define NPCM7XX_CLK_S_USB_HOST "usb_host" +#define NPCM7XX_CLK_S_USB_BRIDGE "usb_bridge" +#define NPCM7XX_CLK_S_PCI "pci" + +static u32 pll_mux_table[] = {0, 1, 2, 3}; +static const char * const pll_mux_parents[] __initconst = { + NPCM7XX_CLK_S_PLL0, + NPCM7XX_CLK_S_PLL1_DIV2, + NPCM7XX_CLK_S_REFCLK, + NPCM7XX_CLK_S_PLL2_DIV2, +}; + +static u32 cpuck_mux_table[] = {0, 1, 2, 3}; +static const char * const cpuck_mux_parents[] __initconst = { + NPCM7XX_CLK_S_PLL0, + NPCM7XX_CLK_S_PLL1_DIV2, + NPCM7XX_CLK_S_REFCLK, + NPCM7XX_CLK_S_SYSBYPCK, +}; + +static u32 pixcksel_mux_table[] = {0, 2}; +static const char * const pixcksel_mux_parents[] __initconst = { + NPCM7XX_CLK_S_PLL_GFX, + NPCM7XX_CLK_S_REFCLK, +}; + +static u32 sucksel_mux_table[] = {2, 3}; +static const char * const sucksel_mux_parents[] __initconst = { + NPCM7XX_CLK_S_REFCLK, + NPCM7XX_CLK_S_PLL2_DIV2, +}; + +static u32 mccksel_mux_table[] = {0, 2, 3}; +static const char * const mccksel_mux_parents[] __initconst = { + NPCM7XX_CLK_S_PLL1_DIV2, + NPCM7XX_CLK_S_REFCLK, + NPCM7XX_CLK_S_MCBYPCK, +}; + +static u32 clkoutsel_mux_table[] = {0, 1, 2, 3, 4}; +static const char * const clkoutsel_mux_parents[] __initconst = { + NPCM7XX_CLK_S_PLL0, + NPCM7XX_CLK_S_PLL1_DIV2, + NPCM7XX_CLK_S_REFCLK, + NPCM7XX_CLK_S_PLL_GFX, // divided by 2 + NPCM7XX_CLK_S_PLL2_DIV2, +}; + +static u32 gfxmsel_mux_table[] = {2, 3}; +static const char * const gfxmsel_mux_parents[] __initconst = { + NPCM7XX_CLK_S_REFCLK, + NPCM7XX_CLK_S_PLL2_DIV2, +}; + +static u32 dvcssel_mux_table[] = {2, 3}; +static const char * const dvcssel_mux_parents[] __initconst = { + NPCM7XX_CLK_S_REFCLK, + NPCM7XX_CLK_S_PLL2, +}; + +static const struct npcm7xx_clk_pll_data npcm7xx_plls[] __initconst = { + {NPCM7XX_PLLCON0, NPCM7XX_CLK_S_PLL0, NPCM7XX_CLK_S_REFCLK, 0, -1}, + + {NPCM7XX_PLLCON1, NPCM7XX_CLK_S_PLL1, + NPCM7XX_CLK_S_REFCLK, 0, -1}, + + {NPCM7XX_PLLCON2, NPCM7XX_CLK_S_PLL2, + NPCM7XX_CLK_S_REFCLK, 0, -1}, + + {NPCM7XX_PLLCONG, NPCM7XX_CLK_S_PLL_GFX, + NPCM7XX_CLK_S_REFCLK, 0, -1}, +}; + +static const struct npcm7xx_clk_mux_data npcm7xx_muxes[] __initconst = { + {0, GENMASK(1, 0), cpuck_mux_table, NPCM7XX_CLK_S_CPU_MUX, + cpuck_mux_parents, ARRAY_SIZE(cpuck_mux_parents), CLK_IS_CRITICAL, + NPCM7XX_CLK_CPU}, + + {4, GENMASK(1, 0), pixcksel_mux_table, NPCM7XX_CLK_S_PIX_MUX, + pixcksel_mux_parents, ARRAY_SIZE(pixcksel_mux_parents), 0, + NPCM7XX_CLK_GFX_PIXEL}, + + {6, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_SD_MUX, + pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1}, + + {8, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_UART_MUX, + pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1}, + + {10, GENMASK(1, 0), sucksel_mux_table, NPCM7XX_CLK_S_SU_MUX, + sucksel_mux_parents, ARRAY_SIZE(sucksel_mux_parents), 0, -1}, + + {12, GENMASK(1, 0), mccksel_mux_table, NPCM7XX_CLK_S_MC_MUX, + mccksel_mux_parents, ARRAY_SIZE(mccksel_mux_parents), 0, -1}, + + {14, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_TIM_MUX, + pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1}, + + {16, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_GFX_MUX, + pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1}, + + {18, GENMASK(2, 0), clkoutsel_mux_table, NPCM7XX_CLK_S_CLKOUT_MUX, + clkoutsel_mux_parents, ARRAY_SIZE(clkoutsel_mux_parents), 0, -1}, + + {21, GENMASK(1, 0), gfxmsel_mux_table, NPCM7XX_CLK_S_GFXM_MUX, + gfxmsel_mux_parents, ARRAY_SIZE(gfxmsel_mux_parents), 0, -1}, + + {23, GENMASK(1, 0), dvcssel_mux_table, NPCM7XX_CLK_S_DVC_MUX, + dvcssel_mux_parents, ARRAY_SIZE(dvcssel_mux_parents), 0, -1}, +}; + +/* configurable dividers: */ +static const struct npcm7xx_clk_div_data npcm7xx_divs[] __initconst = { + {NPCM7XX_CLKDIV1, 28, 3, NPCM7XX_CLK_S_ADC, + NPCM7XX_CLK_S_TIMER, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_ADC}, + /*30-28 ADCCKDIV*/ + {NPCM7XX_CLKDIV1, 26, 2, NPCM7XX_CLK_S_AHB, + NPCM7XX_CLK_S_AXI, 0, CLK_IS_CRITICAL, NPCM7XX_CLK_AHB}, + /*27-26 CLK4DIV*/ + {NPCM7XX_CLKDIV1, 21, 5, NPCM7XX_CLK_S_TIMER, + NPCM7XX_CLK_S_TIM_MUX, 0, 0, NPCM7XX_CLK_TIMER}, + /*25-21 TIMCKDIV*/ + {NPCM7XX_CLKDIV1, 16, 5, NPCM7XX_CLK_S_UART, + NPCM7XX_CLK_S_UART_MUX, 0, 0, NPCM7XX_CLK_UART}, + /*20-16 UARTDIV*/ + {NPCM7XX_CLKDIV1, 11, 5, NPCM7XX_CLK_S_MMC, + NPCM7XX_CLK_S_SD_MUX, 0, 0, NPCM7XX_CLK_MMC}, + /*15-11 MMCCKDIV*/ + {NPCM7XX_CLKDIV1, 6, 5, NPCM7XX_CLK_S_SPI3, + NPCM7XX_CLK_S_AHB, 0, 0, NPCM7XX_CLK_SPI3}, + /*10-6 AHB3CKDIV*/ + {NPCM7XX_CLKDIV1, 2, 4, NPCM7XX_CLK_S_PCI, + NPCM7XX_CLK_S_GFX_MUX, 0, 0, NPCM7XX_CLK_PCI}, + /*5-2 PCICKDIV*/ + {NPCM7XX_CLKDIV1, 0, 1, NPCM7XX_CLK_S_AXI, + NPCM7XX_CLK_S_CPU_MUX, CLK_DIVIDER_POWER_OF_TWO, CLK_IS_CRITICAL, + NPCM7XX_CLK_AXI},/*0 CLK2DIV*/ + + {NPCM7XX_CLKDIV2, 30, 2, NPCM7XX_CLK_S_APB4, + NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB4}, + /*31-30 APB4CKDIV*/ + {NPCM7XX_CLKDIV2, 28, 2, NPCM7XX_CLK_S_APB3, + NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB3}, + /*29-28 APB3CKDIV*/ + {NPCM7XX_CLKDIV2, 26, 2, NPCM7XX_CLK_S_APB2, + NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB2}, + /*27-26 APB2CKDIV*/ + {NPCM7XX_CLKDIV2, 24, 2, NPCM7XX_CLK_S_APB1, + NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB1}, + /*25-24 APB1CKDIV*/ + {NPCM7XX_CLKDIV2, 22, 2, NPCM7XX_CLK_S_APB5, + NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB5}, + /*23-22 APB5CKDIV*/ + {NPCM7XX_CLKDIV2, 16, 5, NPCM7XX_CLK_S_CLKOUT, + NPCM7XX_CLK_S_CLKOUT_MUX, 0, 0, NPCM7XX_CLK_CLKOUT}, + /*20-16 CLKOUTDIV*/ + {NPCM7XX_CLKDIV2, 13, 3, NPCM7XX_CLK_S_GFX, + NPCM7XX_CLK_S_GFX_MUX, 0, 0, NPCM7XX_CLK_GFX}, + /*15-13 GFXCKDIV*/ + {NPCM7XX_CLKDIV2, 8, 5, NPCM7XX_CLK_S_USB_BRIDGE, + NPCM7XX_CLK_S_SU_MUX, 0, 0, NPCM7XX_CLK_SU}, + /*12-8 SUCKDIV*/ + {NPCM7XX_CLKDIV2, 4, 4, NPCM7XX_CLK_S_USB_HOST, + NPCM7XX_CLK_S_SU_MUX, 0, 0, NPCM7XX_CLK_SU48}, + /*7-4 SU48CKDIV*/ + {NPCM7XX_CLKDIV2, 0, 4, NPCM7XX_CLK_S_SDHC, + NPCM7XX_CLK_S_SD_MUX, 0, 0, NPCM7XX_CLK_SDHC} + ,/*3-0 SD1CKDIV*/ + + {NPCM7XX_CLKDIV3, 6, 5, NPCM7XX_CLK_S_SPI0, + NPCM7XX_CLK_S_AHB, 0, 0, NPCM7XX_CLK_SPI0}, + /*10-6 SPI0CKDV*/ + {NPCM7XX_CLKDIV3, 1, 5, NPCM7XX_CLK_S_SPIX, + NPCM7XX_CLK_S_AHB, 0, 0, NPCM7XX_CLK_SPIX}, + /*5-1 SPIXCKDV*/ + +}; + +static DEFINE_SPINLOCK(npcm7xx_clk_lock); + +static void __init npcm7xx_clk_init(struct device_node *clk_np) +{ + struct clk_hw_onecell_data *npcm7xx_clk_data; + void __iomem *clk_base; + struct resource res; + struct clk_hw *hw; + int ret; + int i; + + ret = of_address_to_resource(clk_np, 0, &res); + if (ret) { + pr_err("%pOFn: failed to get resource, ret %d\n", clk_np, + ret); + return; + } + + clk_base = ioremap(res.start, resource_size(&res)); + if (!clk_base) + goto npcm7xx_init_error; + + npcm7xx_clk_data = kzalloc(struct_size(npcm7xx_clk_data, hws, + NPCM7XX_NUM_CLOCKS), GFP_KERNEL); + if (!npcm7xx_clk_data) + goto npcm7xx_init_np_err; + + npcm7xx_clk_data->num = NPCM7XX_NUM_CLOCKS; + + for (i = 0; i < NPCM7XX_NUM_CLOCKS; i++) + npcm7xx_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER); + + /* Register plls */ + for (i = 0; i < ARRAY_SIZE(npcm7xx_plls); i++) { + const struct npcm7xx_clk_pll_data *pll_data = &npcm7xx_plls[i]; + + hw = npcm7xx_clk_register_pll(clk_base + pll_data->reg, + pll_data->name, pll_data->parent_name, pll_data->flags); + if (IS_ERR(hw)) { + pr_err("npcm7xx_clk: Can't register pll\n"); + goto npcm7xx_init_fail; + } + + if (pll_data->onecell_idx >= 0) + npcm7xx_clk_data->hws[pll_data->onecell_idx] = hw; + } + + /* Register fixed dividers */ + hw = clk_hw_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL1_DIV2, + NPCM7XX_CLK_S_PLL1, 0, 1, 2); + if (IS_ERR(hw)) { + pr_err("npcm7xx_clk: Can't register fixed div\n"); + goto npcm7xx_init_fail; + } + + hw = clk_hw_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL2_DIV2, + NPCM7XX_CLK_S_PLL2, 0, 1, 2); + if (IS_ERR(hw)) { + pr_err("npcm7xx_clk: Can't register div2\n"); + goto npcm7xx_init_fail; + } + + /* Register muxes */ + for (i = 0; i < ARRAY_SIZE(npcm7xx_muxes); i++) { + const struct npcm7xx_clk_mux_data *mux_data = &npcm7xx_muxes[i]; + + hw = clk_hw_register_mux_table(NULL, + mux_data->name, + mux_data->parent_names, mux_data->num_parents, + mux_data->flags, clk_base + NPCM7XX_CLKSEL, + mux_data->shift, mux_data->mask, 0, + mux_data->table, &npcm7xx_clk_lock); + + if (IS_ERR(hw)) { + pr_err("npcm7xx_clk: Can't register mux\n"); + goto npcm7xx_init_fail; + } + + if (mux_data->onecell_idx >= 0) + npcm7xx_clk_data->hws[mux_data->onecell_idx] = hw; + } + + /* Register clock dividers specified in npcm7xx_divs */ + for (i = 0; i < ARRAY_SIZE(npcm7xx_divs); i++) { + const struct npcm7xx_clk_div_data *div_data = &npcm7xx_divs[i]; + + hw = clk_hw_register_divider(NULL, div_data->name, + div_data->parent_name, + div_data->flags, + clk_base + div_data->reg, + div_data->shift, div_data->width, + div_data->clk_divider_flags, &npcm7xx_clk_lock); + if (IS_ERR(hw)) { + pr_err("npcm7xx_clk: Can't register div table\n"); + goto npcm7xx_init_fail; + } + + if (div_data->onecell_idx >= 0) + npcm7xx_clk_data->hws[div_data->onecell_idx] = hw; + } + + ret = of_clk_add_hw_provider(clk_np, of_clk_hw_onecell_get, + npcm7xx_clk_data); + if (ret) + pr_err("failed to add DT provider: %d\n", ret); + + of_node_put(clk_np); + + return; + +npcm7xx_init_fail: + kfree(npcm7xx_clk_data); +npcm7xx_init_np_err: + iounmap(clk_base); +npcm7xx_init_error: + of_node_put(clk_np); +} +CLK_OF_DECLARE(npcm7xx_clk_init, "nuvoton,npcm750-clk", npcm7xx_clk_init); |