[U-Boot] [PATCH V3 4/4] clk: imx: add i.MX8MM clk driver

Fabio Estevam festevam at gmail.com
Fri Aug 9 21:02:35 UTC 2019


On Fri, Aug 9, 2019 at 5:02 AM Peng Fan <peng.fan at nxp.com> wrote:
>
> Add i.MX8MM clk driver support.
>
> Signed-off-by: Peng Fan <peng.fan at nxp.com>
> ---
>  drivers/clk/imx/Makefile     |   2 +
>  drivers/clk/imx/clk-imx8mm.c | 415 +++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 417 insertions(+)
>  create mode 100644 drivers/clk/imx/clk-imx8mm.c
>
> diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
> index 105a58ca90..5ad7967fe9 100644
> --- a/drivers/clk/imx/Makefile
> +++ b/drivers/clk/imx/Makefile
> @@ -10,3 +10,5 @@ ifdef CONFIG_CLK_IMX8
>  obj-$(CONFIG_IMX8QXP) += clk-imx8qxp.o
>  obj-$(CONFIG_IMX8QM) += clk-imx8qm.o
>  endif
> +obj-$(CONFIG_$(SPL_TPL_)CLK_IMX8MM) += clk-imx8mm.o clk-pll14xx.o \
> +                               clk-composite-8m.o
> diff --git a/drivers/clk/imx/clk-imx8mm.c b/drivers/clk/imx/clk-imx8mm.c
> new file mode 100644
> index 0000000000..a2a85b6a1a
> --- /dev/null
> +++ b/drivers/clk/imx/clk-imx8mm.c
> @@ -0,0 +1,415 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright 2019 NXP
> + * Peng Fan <peng.fan at nxp.com>
> + */
> +
> +#include <common.h>
> +#include <clk.h>
> +#include <clk-uclass.h>
> +#include <dm.h>
> +#include <asm/arch/clock.h>
> +#include <asm/arch/imx-regs.h>
> +#include <dt-bindings/clock/imx8mm-clock.h>
> +
> +#include "clk.h"
> +
> +#define PLL_1416X_RATE(_rate, _m, _p, _s)              \
> +       {                                               \
> +               .rate   =       (_rate),                \
> +               .mdiv   =       (_m),                   \
> +               .pdiv   =       (_p),                   \
> +               .sdiv   =       (_s),                   \
> +       }
> +
> +#define PLL_1443X_RATE(_rate, _m, _p, _s, _k)          \
> +       {                                               \
> +               .rate   =       (_rate),                \
> +               .mdiv   =       (_m),                   \
> +               .pdiv   =       (_p),                   \
> +               .sdiv   =       (_s),                   \
> +               .kdiv   =       (_k),                   \
> +       }
> +
> +static const struct imx_pll14xx_rate_table imx8mm_pll1416x_tbl[] = {
> +       PLL_1416X_RATE(1800000000U, 225, 3, 0),
> +       PLL_1416X_RATE(1600000000U, 200, 3, 0),
> +       PLL_1416X_RATE(1200000000U, 300, 3, 1),
> +       PLL_1416X_RATE(1000000000U, 250, 3, 1),
> +       PLL_1416X_RATE(800000000U,  200, 3, 1),
> +       PLL_1416X_RATE(750000000U,  250, 2, 2),
> +       PLL_1416X_RATE(700000000U,  350, 3, 2),
> +       PLL_1416X_RATE(600000000U,  300, 3, 2),
> +};
> +
> +static const struct imx_pll14xx_rate_table imx8mm_drampll_tbl[] = {
> +       PLL_1443X_RATE(650000000U, 325, 3, 2, 0),
> +};
> +
> +static struct imx_pll14xx_clk imx8mm_dram_pll __initdata = {
> +               .type = PLL_1443X,
> +               .rate_table = imx8mm_drampll_tbl,
> +               .rate_count = ARRAY_SIZE(imx8mm_drampll_tbl),
> +};
> +
> +static struct imx_pll14xx_clk imx8mm_arm_pll __initdata = {
> +               .type = PLL_1416X,
> +               .rate_table = imx8mm_pll1416x_tbl,
> +               .rate_count = ARRAY_SIZE(imx8mm_pll1416x_tbl),
> +};
> +
> +static struct imx_pll14xx_clk imx8mm_sys_pll __initdata = {
> +               .type = PLL_1416X,
> +               .rate_table = imx8mm_pll1416x_tbl,
> +               .rate_count = ARRAY_SIZE(imx8mm_pll1416x_tbl),
> +};
> +
> +static const char *pll_ref_sels[] = { "clock-osc-24m", "dummy", "dummy", "dummy", };
> +static const char *dram_pll_bypass_sels[] = {"dram_pll", "dram_pll_ref_sel", };
> +static const char *arm_pll_bypass_sels[] = {"arm_pll", "arm_pll_ref_sel", };
> +static const char *sys_pll1_bypass_sels[] = {"sys_pll1", "sys_pll1_ref_sel", };
> +static const char *sys_pll2_bypass_sels[] = {"sys_pll2", "sys_pll2_ref_sel", };
> +static const char *sys_pll3_bypass_sels[] = {"sys_pll3", "sys_pll3_ref_sel", };
> +
> +static const char *imx8mm_a53_sels[] = {"clock-osc-24m", "arm_pll_out", "sys_pll2_500m", "sys_pll2_1000m",
> +                                       "sys_pll1_800m", "sys_pll1_400m", "audio_pll1_out", "sys_pll3_out", };
> +
> +static const char *imx8mm_ahb_sels[] = {"osc_24m", "sys_pll1_133m", "sys_pll1_800m", "sys_pll1_400m",
> +                                       "sys_pll2_125m", "sys_pll3_out", "audio_pll1_out", "video_pll1_out", };
> +
> +static const char *imx8mm_enet_axi_sels[] = {"clock-osc-24m", "sys_pll1_266m", "sys_pll1_800m", "sys_pll2_250m",
> +                                            "sys_pll2_200m", "audio_pll1_out", "video_pll1_out", "sys_pll3_out", };
> +
> +static const char *imx8mm_nand_usdhc_sels[] = {"clock-osc-24m", "sys_pll1_266m", "sys_pll1_800m", "sys_pll2_200m",
> +                                              "sys_pll1_133m", "sys_pll3_out", "sys_pll2_250m", "audio_pll1_out", };
> +
> +static const char *imx8mm_usdhc1_sels[] = {"clock-osc-24m", "sys_pll1_400m", "sys_pll1_800m", "sys_pll2_500m",
> +                                          "sys_pll3_out", "sys_pll1_266m", "audio_pll2_out", "sys_pll1_100m", };
> +
> +static const char *imx8mm_usdhc2_sels[] = {"clock-osc-24m", "sys_pll1_400m", "sys_pll1_800m", "sys_pll2_500m",
> +                                          "sys_pll3_out", "sys_pll1_266m", "audio_pll2_out", "sys_pll1_100m", };
> +
> +static const char *imx8mm_i2c1_sels[] = {"clock-osc-24m", "sys_pll1_160m", "sys_pll2_50m", "sys_pll3_out", "audio_pll1_out",
> +                                        "video_pll1_out", "audio_pll2_out", "sys_pll1_133m", };
> +
> +static const char *imx8mm_i2c2_sels[] = {"clock-osc-24m", "sys_pll1_160m", "sys_pll2_50m", "sys_pll3_out", "audio_pll1_out",
> +                                        "video_pll1_out", "audio_pll2_out", "sys_pll1_133m", };
> +
> +static const char *imx8mm_i2c3_sels[] = {"clock-osc-24m", "sys_pll1_160m", "sys_pll2_50m", "sys_pll3_out", "audio_pll1_out",
> +                                        "video_pll1_out", "audio_pll2_out", "sys_pll1_133m", };
> +
> +static const char *imx8mm_i2c4_sels[] = {"clock-osc-24m", "sys_pll1_160m", "sys_pll2_50m", "sys_pll3_out", "audio_pll1_out",
> +                                        "video_pll1_out", "audio_pll2_out", "sys_pll1_133m", };
> +
> +static const char *imx8mm_wdog_sels[] = {"clock-osc-24m", "sys_pll1_133m", "sys_pll1_160m", "vpu_pll_out",
> +                                        "sys_pll2_125m", "sys_pll3_out", "sys_pll1_80m", "sys_pll2_166m", };
> +
> +static const char *imx8mm_usdhc3_sels[] = {"clock-osc-24m", "sys_pll1_400m", "sys_pll1_800m", "sys_pll2_500m",
> +                                          "sys_pll3_out", "sys_pll1_266m", "audio_pll2_clk", "sys_pll1_100m", };
> +
> +static ulong imx8mm_clk_get_rate(struct clk *clk)
> +{
> +       struct clk *c;
> +       int ret;
> +
> +       debug("%s(#%lu)\n", __func__, clk->id);
> +
> +       ret = clk_get_by_id(clk->id, &c);
> +       if (ret)
> +               return ret;
> +
> +       return clk_get_rate(c);
> +}
> +
> +static ulong imx8mm_clk_set_rate(struct clk *clk, unsigned long rate)
> +{
> +       struct clk *c;
> +       int ret = 0;

Unneeded initialization.

> +
> +       debug("%s(#%lu), rate: %lu\n", __func__, clk->id, rate);
> +
> +       ret = clk_get_by_id(clk->id, &c);
> +       if (ret)
> +               return ret;
> +
> +       return clk_set_rate(c, rate);
> +}
> +
> +static int __imx8mm_clk_enable(struct clk *clk, bool enable)
> +{
> +       struct clk *c;
> +       int ret = 0;

Same here.


> +
> +       debug("%s(#%lu) en: %d\n", __func__, clk->id, enable);
> +
> +       ret = clk_get_by_id(clk->id, &c);
> +       if (ret)
> +               return ret;
> +
> +       if (enable)
> +               ret = clk_enable(c);
> +       else
> +               ret = clk_disable(c);
> +
> +       return ret;
> +}
> +
> +static int imx8mm_clk_disable(struct clk *clk)
> +{
> +       return __imx8mm_clk_enable(clk, 0);
> +}
> +
> +static int imx8mm_clk_enable(struct clk *clk)
> +{
> +       return __imx8mm_clk_enable(clk, 1);
> +}
> +
> +static struct clk_ops imx8mm_clk_ops = {
> +       .set_rate = imx8mm_clk_set_rate,
> +       .get_rate = imx8mm_clk_get_rate,
> +       .enable = imx8mm_clk_enable,
> +       .disable = imx8mm_clk_disable,
> +};
> +
> +static int imx8mm_clk_probe(struct udevice *dev)
> +{
> +       void __iomem *base;
> +
> +       base = (void *)ANATOP_BASE_ADDR;
> +
> +       clk_dm(IMX8MM_DRAM_PLL_REF_SEL,
> +              imx_clk_mux("dram_pll_ref_sel", base + 0x50, 0, 2,
> +                          pll_ref_sels, ARRAY_SIZE(pll_ref_sels)));
> +       clk_dm(IMX8MM_ARM_PLL_REF_SEL,
> +              imx_clk_mux("arm_pll_ref_sel", base + 0x84, 0, 2,
> +                          pll_ref_sels, ARRAY_SIZE(pll_ref_sels)));
> +       clk_dm(IMX8MM_SYS_PLL1_REF_SEL,
> +              imx_clk_mux("sys_pll1_ref_sel", base + 0x94, 0, 2,
> +                          pll_ref_sels, ARRAY_SIZE(pll_ref_sels)));
> +       clk_dm(IMX8MM_SYS_PLL2_REF_SEL,
> +              imx_clk_mux("sys_pll2_ref_sel", base + 0x104, 0, 2,
> +                          pll_ref_sels, ARRAY_SIZE(pll_ref_sels)));
> +       clk_dm(IMX8MM_SYS_PLL3_REF_SEL,
> +              imx_clk_mux("sys_pll3_ref_sel", base + 0x114, 0, 2,
> +                          pll_ref_sels, ARRAY_SIZE(pll_ref_sels)));
> +
> +       clk_dm(IMX8MM_DRAM_PLL,
> +              imx_clk_pll14xx("dram_pll", "dram_pll_ref_sel",
> +                              base + 0x50, &imx8mm_dram_pll));
> +       clk_dm(IMX8MM_ARM_PLL,
> +              imx_clk_pll14xx("arm_pll", "arm_pll_ref_sel",
> +                              base + 0x84, &imx8mm_arm_pll));
> +       clk_dm(IMX8MM_SYS_PLL1,
> +              imx_clk_pll14xx("sys_pll1", "sys_pll1_ref_sel",
> +                              base + 0x94, &imx8mm_sys_pll));
> +       clk_dm(IMX8MM_SYS_PLL2,
> +              imx_clk_pll14xx("sys_pll2", "sys_pll2_ref_sel",
> +                              base + 0x104, &imx8mm_sys_pll));
> +       clk_dm(IMX8MM_SYS_PLL3,
> +              imx_clk_pll14xx("sys_pll3", "sys_pll3_ref_sel",
> +                              base + 0x114, &imx8mm_sys_pll));
> +
> +       /* PLL bypass out */
> +       clk_dm(IMX8MM_DRAM_PLL_BYPASS,
> +              imx_clk_mux_flags("dram_pll_bypass", base + 0x50, 4, 1,
> +                                dram_pll_bypass_sels,
> +                                ARRAY_SIZE(dram_pll_bypass_sels),
> +                                CLK_SET_RATE_PARENT));
> +       clk_dm(IMX8MM_ARM_PLL_BYPASS,
> +              imx_clk_mux_flags("arm_pll_bypass", base + 0x84, 4, 1,
> +                                arm_pll_bypass_sels,
> +                                ARRAY_SIZE(arm_pll_bypass_sels),
> +                                CLK_SET_RATE_PARENT));
> +       clk_dm(IMX8MM_SYS_PLL1_BYPASS,
> +              imx_clk_mux_flags("sys_pll1_bypass", base + 0x94, 4, 1,
> +                                sys_pll1_bypass_sels,
> +                                ARRAY_SIZE(sys_pll1_bypass_sels),
> +                                CLK_SET_RATE_PARENT));
> +       clk_dm(IMX8MM_SYS_PLL2_BYPASS,
> +              imx_clk_mux_flags("sys_pll2_bypass", base + 0x104, 4, 1,
> +                                sys_pll2_bypass_sels,
> +                                ARRAY_SIZE(sys_pll2_bypass_sels),
> +                                CLK_SET_RATE_PARENT));
> +       clk_dm(IMX8MM_SYS_PLL3_BYPASS,
> +              imx_clk_mux_flags("sys_pll3_bypass", base + 0x114, 4, 1,
> +                                sys_pll3_bypass_sels,
> +                                ARRAY_SIZE(sys_pll3_bypass_sels),
> +                                CLK_SET_RATE_PARENT));
> +
> +       /* PLL out gate */
> +       clk_dm(IMX8MM_DRAM_PLL_OUT,
> +              imx_clk_gate("dram_pll_out", "dram_pll_bypass",
> +                           base + 0x50, 13));
> +       clk_dm(IMX8MM_ARM_PLL_OUT,
> +              imx_clk_gate("arm_pll_out", "arm_pll_bypass",
> +                           base + 0x84, 11));
> +       clk_dm(IMX8MM_SYS_PLL1_OUT,
> +              imx_clk_gate("sys_pll1_out", "sys_pll1_bypass",
> +                           base + 0x94, 11));
> +       clk_dm(IMX8MM_SYS_PLL2_OUT,
> +              imx_clk_gate("sys_pll2_out", "sys_pll2_bypass",
> +                           base + 0x104, 11));
> +       clk_dm(IMX8MM_SYS_PLL3_OUT,
> +              imx_clk_gate("sys_pll3_out", "sys_pll3_bypass",
> +                           base + 0x114, 11));
> +
> +       /* SYS PLL fixed output */
> +       clk_dm(IMX8MM_SYS_PLL1_40M,
> +              imx_clk_fixed_factor("sys_pll1_40m", "sys_pll1_out", 1, 20));
> +       clk_dm(IMX8MM_SYS_PLL1_80M,
> +              imx_clk_fixed_factor("sys_pll1_80m", "sys_pll1_out", 1, 10));
> +       clk_dm(IMX8MM_SYS_PLL1_100M,
> +              imx_clk_fixed_factor("sys_pll1_100m", "sys_pll1_out", 1, 8));
> +       clk_dm(IMX8MM_SYS_PLL1_133M,
> +              imx_clk_fixed_factor("sys_pll1_133m", "sys_pll1_out", 1, 6));
> +       clk_dm(IMX8MM_SYS_PLL1_160M,
> +              imx_clk_fixed_factor("sys_pll1_160m", "sys_pll1_out", 1, 5));
> +       clk_dm(IMX8MM_SYS_PLL1_200M,
> +              imx_clk_fixed_factor("sys_pll1_200m", "sys_pll1_out", 1, 4));
> +       clk_dm(IMX8MM_SYS_PLL1_266M,
> +              imx_clk_fixed_factor("sys_pll1_266m", "sys_pll1_out", 1, 3));
> +       clk_dm(IMX8MM_SYS_PLL1_400M,
> +              imx_clk_fixed_factor("sys_pll1_400m", "sys_pll1_out", 1, 2));
> +       clk_dm(IMX8MM_SYS_PLL1_800M,
> +              imx_clk_fixed_factor("sys_pll1_800m", "sys_pll1_out", 1, 1));
> +
> +       clk_dm(IMX8MM_SYS_PLL2_50M,
> +              imx_clk_fixed_factor("sys_pll2_50m", "sys_pll2_out", 1, 20));
> +       clk_dm(IMX8MM_SYS_PLL2_100M,
> +              imx_clk_fixed_factor("sys_pll2_100m", "sys_pll2_out", 1, 10));
> +       clk_dm(IMX8MM_SYS_PLL2_125M,
> +              imx_clk_fixed_factor("sys_pll2_125m", "sys_pll2_out", 1, 8));
> +       clk_dm(IMX8MM_SYS_PLL2_166M,
> +              imx_clk_fixed_factor("sys_pll2_166m", "sys_pll2_out", 1, 6));
> +       clk_dm(IMX8MM_SYS_PLL2_200M,
> +              imx_clk_fixed_factor("sys_pll2_200m", "sys_pll2_out", 1, 5));
> +       clk_dm(IMX8MM_SYS_PLL2_250M,
> +              imx_clk_fixed_factor("sys_pll2_250m", "sys_pll2_out", 1, 4));
> +       clk_dm(IMX8MM_SYS_PLL2_333M,
> +              imx_clk_fixed_factor("sys_pll2_333m", "sys_pll2_out", 1, 3));
> +       clk_dm(IMX8MM_SYS_PLL2_500M,
> +              imx_clk_fixed_factor("sys_pll2_500m", "sys_pll2_out", 1, 2));
> +       clk_dm(IMX8MM_SYS_PLL2_1000M,
> +              imx_clk_fixed_factor("sys_pll2_1000m", "sys_pll2_out", 1, 1));
> +
> +       base = dev_read_addr_ptr(dev);
> +       if (base == (void *)FDT_ADDR_T_NONE)
> +               return -EINVAL;
> +
> +       clk_dm(IMX8MM_CLK_A53_SRC,
> +              imx_clk_mux2("arm_a53_src", base + 0x8000, 24, 3,
> +                           imx8mm_a53_sels, ARRAY_SIZE(imx8mm_a53_sels)));
> +       clk_dm(IMX8MM_CLK_A53_CG,
> +              imx_clk_gate3("arm_a53_cg", "arm_a53_src", base + 0x8000, 28));
> +       clk_dm(IMX8MM_CLK_A53_DIV,
> +              imx_clk_divider2("arm_a53_div", "arm_a53_cg",
> +                               base + 0x8000, 0, 3));
> +
> +       clk_dm(IMX8MM_CLK_AHB,
> +              imx8m_clk_composite_critical("ahb", imx8mm_ahb_sels,
> +                                           base + 0x9000));
> +       clk_dm(IMX8MM_CLK_IPG_ROOT,
> +              imx_clk_divider2("ipg_root", "ahb", base + 0x9080, 0, 1));
> +
> +       clk_dm(IMX8MM_CLK_ENET_AXI,
> +              imx8m_clk_composite("enet_axi", imx8mm_enet_axi_sels,
> +                                  base + 0x8880));
> +       clk_dm(IMX8MM_CLK_NAND_USDHC_BUS,
> +              imx8m_clk_composite_critical("nand_usdhc_bus",
> +                                           imx8mm_nand_usdhc_sels,
> +                                           base + 0x8900));
> +
> +       /* IP */
> +       clk_dm(IMX8MM_CLK_USDHC1,
> +              imx8m_clk_composite("usdhc1", imx8mm_usdhc1_sels,
> +                                  base + 0xac00));
> +       clk_dm(IMX8MM_CLK_USDHC2,
> +              imx8m_clk_composite("usdhc2", imx8mm_usdhc2_sels,
> +                                  base + 0xac80));
> +       clk_dm(IMX8MM_CLK_I2C1,
> +              imx8m_clk_composite("i2c1", imx8mm_i2c1_sels, base + 0xad00));
> +       clk_dm(IMX8MM_CLK_I2C2,
> +              imx8m_clk_composite("i2c2", imx8mm_i2c2_sels, base + 0xad80));
> +       clk_dm(IMX8MM_CLK_I2C3,
> +              imx8m_clk_composite("i2c3", imx8mm_i2c3_sels, base + 0xae00));
> +       clk_dm(IMX8MM_CLK_I2C4,
> +              imx8m_clk_composite("i2c4", imx8mm_i2c4_sels, base + 0xae80));
> +       clk_dm(IMX8MM_CLK_WDOG,
> +              imx8m_clk_composite("wdog", imx8mm_wdog_sels, base + 0xb900));
> +       clk_dm(IMX8MM_CLK_USDHC3,
> +              imx8m_clk_composite("usdhc3", imx8mm_usdhc3_sels,
> +                                  base + 0xbc80));
> +
> +       clk_dm(IMX8MM_CLK_I2C1_ROOT,
> +              imx_clk_gate4("i2c1_root_clk", "i2c1", base + 0x4170, 0));
> +       clk_dm(IMX8MM_CLK_I2C2_ROOT,
> +              imx_clk_gate4("i2c2_root_clk", "i2c2", base + 0x4180, 0));
> +       clk_dm(IMX8MM_CLK_I2C3_ROOT,
> +              imx_clk_gate4("i2c3_root_clk", "i2c3", base + 0x4190, 0));
> +       clk_dm(IMX8MM_CLK_I2C4_ROOT,
> +              imx_clk_gate4("i2c4_root_clk", "i2c4", base + 0x41a0, 0));
> +       clk_dm(IMX8MM_CLK_OCOTP_ROOT,
> +              imx_clk_gate4("ocotp_root_clk", "ipg_root", base + 0x4220, 0));
> +       clk_dm(IMX8MM_CLK_USDHC1_ROOT,
> +              imx_clk_gate4("usdhc1_root_clk", "usdhc1", base + 0x4510, 0));
> +       clk_dm(IMX8MM_CLK_USDHC2_ROOT,
> +              imx_clk_gate4("usdhc2_root_clk", "usdhc2", base + 0x4520, 0));
> +       clk_dm(IMX8MM_CLK_WDOG1_ROOT,
> +              imx_clk_gate4("wdog1_root_clk", "wdog", base + 0x4530, 0));
> +       clk_dm(IMX8MM_CLK_WDOG2_ROOT,
> +              imx_clk_gate4("wdog2_root_clk", "wdog", base + 0x4540, 0));
> +       clk_dm(IMX8MM_CLK_WDOG3_ROOT,
> +              imx_clk_gate4("wdog3_root_clk", "wdog", base + 0x4550, 0));
> +       clk_dm(IMX8MM_CLK_USDHC3_ROOT,
> +              imx_clk_gate4("usdhc3_root_clk", "usdhc3", base + 0x45e0, 0));
> +
> +#ifdef CONFIG_SPL_BUILD
> +       struct clk *clkp, *clkp1;
> +
> +       clk_get_by_id(IMX8MM_CLK_WDOG1_ROOT, &clkp);
> +       clk_enable(clkp);
> +       clk_get_by_id(IMX8MM_CLK_WDOG2_ROOT, &clkp);
> +       clk_enable(clkp);
> +       clk_get_by_id(IMX8MM_CLK_WDOG3_ROOT, &clkp);
> +       clk_enable(clkp);
> +
> +       /* Configure SYS_PLL3 to 750MHz */
> +       clk_get_by_id(IMX8MM_SYS_PLL3, &clkp);
> +       clk_set_rate(clkp, 750000000UL);
> +       clk_enable(clkp);
> +
> +       /* Configure ARM to sys_pll2_500m */
> +       clk_get_by_id(IMX8MM_CLK_A53_SRC, &clkp);
> +       clk_get_by_id(IMX8MM_SYS_PLL2_OUT, &clkp1);
> +       clk_enable(clkp1);
> +       clk_get_by_id(IMX8MM_SYS_PLL2_500M, &clkp1);
> +       clk_set_parent(clkp, clkp1);
> +
> +       /* Configure ARM PLL to 1.2GHz */
> +       clk_get_by_id(IMX8MM_ARM_PLL, &clkp1);
> +       clk_set_rate(clkp1, 1200000000UL);
> +       clk_get_by_id(IMX8MM_ARM_PLL_OUT, &clkp1);
> +       clk_enable(clkp1);
> +       clk_set_parent(clkp, clkp1);
> +
> +       /* Configure DIV to 1.2GHz */
> +       clk_get_by_id(IMX8MM_CLK_A53_DIV, &clkp1);
> +       clk_set_rate(clkp1, 1200000000UL);
> +#endif
> +
> +       return 0;
> +}
> +
> +static const struct udevice_id imx8mm_clk_ids[] = {
> +       { .compatible = "fsl,imx8mm-ccm" },
> +       { },
> +};
> +
> +U_BOOT_DRIVER(imx8mm_clk) = {
> +       .name = "clk_imx8mm",
> +       .id = UCLASS_CLK,
> +       .of_match = imx8mm_clk_ids,
> +       .ops = &imx8mm_clk_ops,
> +       .probe = imx8mm_clk_probe,
> +       .flags = DM_FLAG_PRE_RELOC,
> +};
> --
> 2.16.4
>


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