Add i.MX8MM ccf driver support. Modifed from Linux Kernel 5.3.0-rc1, drop some entries that not used in U-Boot and adapt to U-Boot CCF style.
Signed-off-by: Peng Fan peng.fan@nxp.com Cc: Lukasz Majewski lukma@denx.de --- drivers/clk/imx/Kconfig | 16 ++ drivers/clk/imx/Makefile | 2 + drivers/clk/imx/clk-imx8mn.c | 415 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 433 insertions(+) create mode 100644 drivers/clk/imx/clk-imx8mn.c
diff --git a/drivers/clk/imx/Kconfig b/drivers/clk/imx/Kconfig index aae69cf9b0..0ba8bc9f63 100644 --- a/drivers/clk/imx/Kconfig +++ b/drivers/clk/imx/Kconfig @@ -36,3 +36,19 @@ config CLK_IMX8MM select CLK_CCF help This enables support clock driver for i.MX8MM platforms. + +config SPL_CLK_IMX8MN + bool "SPL clock support for i.MX8MN" + depends on ARCH_IMX8M && SPL + select SPL_CLK + select SPL_CLK_CCF + help + This enables SPL DM/DTS support for clock driver in i.MX8MN + +config CLK_IMX8MN + bool "Clock support for i.MX8MN" + depends on ARCH_IMX8M + select CLK + select CLK_CCF + help + This enables support clock driver for i.MX8MN platforms. diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index 5ad7967fe9..222c5a4e08 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -12,3 +12,5 @@ obj-$(CONFIG_IMX8QM) += clk-imx8qm.o endif obj-$(CONFIG_$(SPL_TPL_)CLK_IMX8MM) += clk-imx8mm.o clk-pll14xx.o \ clk-composite-8m.o +obj-$(CONFIG_$(SPL_TPL_)CLK_IMX8MN) += clk-imx8mn.o clk-pll14xx.o \ + clk-composite-8m.o diff --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c new file mode 100644 index 0000000000..4048cc63cc --- /dev/null +++ b/drivers/clk/imx/clk-imx8mn.c @@ -0,0 +1,415 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2019 NXP + * Peng Fan peng.fan@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/imx8mn-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 imx8mn_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 imx8mn_drampll_tbl[] = { + PLL_1443X_RATE(650000000U, 325, 3, 2, 0), +}; + +static struct imx_pll14xx_clk imx8mn_dram_pll __initdata = { + .type = PLL_1443X, + .rate_table = imx8mn_drampll_tbl, + .rate_count = ARRAY_SIZE(imx8mn_drampll_tbl), +}; + +static struct imx_pll14xx_clk imx8mn_arm_pll __initdata = { + .type = PLL_1416X, + .rate_table = imx8mn_pll1416x_tbl, + .rate_count = ARRAY_SIZE(imx8mn_pll1416x_tbl), +}; + +static struct imx_pll14xx_clk imx8mn_sys_pll __initdata = { + .type = PLL_1416X, + .rate_table = imx8mn_pll1416x_tbl, + .rate_count = ARRAY_SIZE(imx8mn_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 *imx8mn_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 *imx8mn_ahb_sels[] = {"clock-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 *imx8mn_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 *imx8mn_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 *imx8mn_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 *imx8mn_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 *imx8mn_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 *imx8mn_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 *imx8mn_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 *imx8mn_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 *imx8mn_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 *imx8mn_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 imx8mn_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 imx8mn_clk_set_rate(struct clk *clk, unsigned long rate) +{ + struct clk *c; + int ret; + + 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 __imx8mn_clk_enable(struct clk *clk, bool enable) +{ + struct clk *c; + int ret; + + 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 imx8mn_clk_disable(struct clk *clk) +{ + return __imx8mn_clk_enable(clk, 0); +} + +static int imx8mn_clk_enable(struct clk *clk) +{ + return __imx8mn_clk_enable(clk, 1); +} + +static struct clk_ops imx8mn_clk_ops = { + .set_rate = imx8mn_clk_set_rate, + .get_rate = imx8mn_clk_get_rate, + .enable = imx8mn_clk_enable, + .disable = imx8mn_clk_disable, +}; + +static int imx8mn_clk_probe(struct udevice *dev) +{ + void __iomem *base; + + base = (void *)ANATOP_BASE_ADDR; + + clk_dm(IMX8MN_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(IMX8MN_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(IMX8MN_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(IMX8MN_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(IMX8MN_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(IMX8MN_DRAM_PLL, + imx_clk_pll14xx("dram_pll", "dram_pll_ref_sel", + base + 0x50, &imx8mn_dram_pll)); + clk_dm(IMX8MN_ARM_PLL, + imx_clk_pll14xx("arm_pll", "arm_pll_ref_sel", + base + 0x84, &imx8mn_arm_pll)); + clk_dm(IMX8MN_SYS_PLL1, + imx_clk_pll14xx("sys_pll1", "sys_pll1_ref_sel", + base + 0x94, &imx8mn_sys_pll)); + clk_dm(IMX8MN_SYS_PLL2, + imx_clk_pll14xx("sys_pll2", "sys_pll2_ref_sel", + base + 0x104, &imx8mn_sys_pll)); + clk_dm(IMX8MN_SYS_PLL3, + imx_clk_pll14xx("sys_pll3", "sys_pll3_ref_sel", + base + 0x114, &imx8mn_sys_pll)); + + /* PLL bypass out */ + clk_dm(IMX8MN_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(IMX8MN_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(IMX8MN_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(IMX8MN_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(IMX8MN_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(IMX8MN_DRAM_PLL_OUT, + imx_clk_gate("dram_pll_out", "dram_pll_bypass", + base + 0x50, 13)); + clk_dm(IMX8MN_ARM_PLL_OUT, + imx_clk_gate("arm_pll_out", "arm_pll_bypass", + base + 0x84, 11)); + clk_dm(IMX8MN_SYS_PLL1_OUT, + imx_clk_gate("sys_pll1_out", "sys_pll1_bypass", + base + 0x94, 11)); + clk_dm(IMX8MN_SYS_PLL2_OUT, + imx_clk_gate("sys_pll2_out", "sys_pll2_bypass", + base + 0x104, 11)); + clk_dm(IMX8MN_SYS_PLL3_OUT, + imx_clk_gate("sys_pll3_out", "sys_pll3_bypass", + base + 0x114, 11)); + + /* SYS PLL fixed output */ + clk_dm(IMX8MN_SYS_PLL1_40M, + imx_clk_fixed_factor("sys_pll1_40m", "sys_pll1_out", 1, 20)); + clk_dm(IMX8MN_SYS_PLL1_80M, + imx_clk_fixed_factor("sys_pll1_80m", "sys_pll1_out", 1, 10)); + clk_dm(IMX8MN_SYS_PLL1_100M, + imx_clk_fixed_factor("sys_pll1_100m", "sys_pll1_out", 1, 8)); + clk_dm(IMX8MN_SYS_PLL1_133M, + imx_clk_fixed_factor("sys_pll1_133m", "sys_pll1_out", 1, 6)); + clk_dm(IMX8MN_SYS_PLL1_160M, + imx_clk_fixed_factor("sys_pll1_160m", "sys_pll1_out", 1, 5)); + clk_dm(IMX8MN_SYS_PLL1_200M, + imx_clk_fixed_factor("sys_pll1_200m", "sys_pll1_out", 1, 4)); + clk_dm(IMX8MN_SYS_PLL1_266M, + imx_clk_fixed_factor("sys_pll1_266m", "sys_pll1_out", 1, 3)); + clk_dm(IMX8MN_SYS_PLL1_400M, + imx_clk_fixed_factor("sys_pll1_400m", "sys_pll1_out", 1, 2)); + clk_dm(IMX8MN_SYS_PLL1_800M, + imx_clk_fixed_factor("sys_pll1_800m", "sys_pll1_out", 1, 1)); + + clk_dm(IMX8MN_SYS_PLL2_50M, + imx_clk_fixed_factor("sys_pll2_50m", "sys_pll2_out", 1, 20)); + clk_dm(IMX8MN_SYS_PLL2_100M, + imx_clk_fixed_factor("sys_pll2_100m", "sys_pll2_out", 1, 10)); + clk_dm(IMX8MN_SYS_PLL2_125M, + imx_clk_fixed_factor("sys_pll2_125m", "sys_pll2_out", 1, 8)); + clk_dm(IMX8MN_SYS_PLL2_166M, + imx_clk_fixed_factor("sys_pll2_166m", "sys_pll2_out", 1, 6)); + clk_dm(IMX8MN_SYS_PLL2_200M, + imx_clk_fixed_factor("sys_pll2_200m", "sys_pll2_out", 1, 5)); + clk_dm(IMX8MN_SYS_PLL2_250M, + imx_clk_fixed_factor("sys_pll2_250m", "sys_pll2_out", 1, 4)); + clk_dm(IMX8MN_SYS_PLL2_333M, + imx_clk_fixed_factor("sys_pll2_333m", "sys_pll2_out", 1, 3)); + clk_dm(IMX8MN_SYS_PLL2_500M, + imx_clk_fixed_factor("sys_pll2_500m", "sys_pll2_out", 1, 2)); + clk_dm(IMX8MN_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(IMX8MN_CLK_A53_SRC, + imx_clk_mux2("arm_a53_src", base + 0x8000, 24, 3, + imx8mn_a53_sels, ARRAY_SIZE(imx8mn_a53_sels))); + clk_dm(IMX8MN_CLK_A53_CG, + imx_clk_gate3("arm_a53_cg", "arm_a53_src", base + 0x8000, 28)); + clk_dm(IMX8MN_CLK_A53_DIV, + imx_clk_divider2("arm_a53_div", "arm_a53_cg", + base + 0x8000, 0, 3)); + + clk_dm(IMX8MN_CLK_AHB, + imx8m_clk_composite_critical("ahb", imx8mn_ahb_sels, + base + 0x9000)); + clk_dm(IMX8MN_CLK_IPG_ROOT, + imx_clk_divider2("ipg_root", "ahb", base + 0x9080, 0, 1)); + + clk_dm(IMX8MN_CLK_ENET_AXI, + imx8m_clk_composite("enet_axi", imx8mn_enet_axi_sels, + base + 0x8880)); + clk_dm(IMX8MN_CLK_NAND_USDHC_BUS, + imx8m_clk_composite_critical("nand_usdhc_bus", + imx8mn_nand_usdhc_sels, + base + 0x8900)); + + /* IP */ + clk_dm(IMX8MN_CLK_USDHC1, + imx8m_clk_composite("usdhc1", imx8mn_usdhc1_sels, + base + 0xac00)); + clk_dm(IMX8MN_CLK_USDHC2, + imx8m_clk_composite("usdhc2", imx8mn_usdhc2_sels, + base + 0xac80)); + clk_dm(IMX8MN_CLK_I2C1, + imx8m_clk_composite("i2c1", imx8mn_i2c1_sels, base + 0xad00)); + clk_dm(IMX8MN_CLK_I2C2, + imx8m_clk_composite("i2c2", imx8mn_i2c2_sels, base + 0xad80)); + clk_dm(IMX8MN_CLK_I2C3, + imx8m_clk_composite("i2c3", imx8mn_i2c3_sels, base + 0xae00)); + clk_dm(IMX8MN_CLK_I2C4, + imx8m_clk_composite("i2c4", imx8mn_i2c4_sels, base + 0xae80)); + clk_dm(IMX8MN_CLK_WDOG, + imx8m_clk_composite("wdog", imx8mn_wdog_sels, base + 0xb900)); + clk_dm(IMX8MN_CLK_USDHC3, + imx8m_clk_composite("usdhc3", imx8mn_usdhc3_sels, + base + 0xbc80)); + + clk_dm(IMX8MN_CLK_I2C1_ROOT, + imx_clk_gate4("i2c1_root_clk", "i2c1", base + 0x4170, 0)); + clk_dm(IMX8MN_CLK_I2C2_ROOT, + imx_clk_gate4("i2c2_root_clk", "i2c2", base + 0x4180, 0)); + clk_dm(IMX8MN_CLK_I2C3_ROOT, + imx_clk_gate4("i2c3_root_clk", "i2c3", base + 0x4190, 0)); + clk_dm(IMX8MN_CLK_I2C4_ROOT, + imx_clk_gate4("i2c4_root_clk", "i2c4", base + 0x41a0, 0)); + clk_dm(IMX8MN_CLK_OCOTP_ROOT, + imx_clk_gate4("ocotp_root_clk", "ipg_root", base + 0x4220, 0)); + clk_dm(IMX8MN_CLK_USDHC1_ROOT, + imx_clk_gate4("usdhc1_root_clk", "usdhc1", base + 0x4510, 0)); + clk_dm(IMX8MN_CLK_USDHC2_ROOT, + imx_clk_gate4("usdhc2_root_clk", "usdhc2", base + 0x4520, 0)); + clk_dm(IMX8MN_CLK_WDOG1_ROOT, + imx_clk_gate4("wdog1_root_clk", "wdog", base + 0x4530, 0)); + clk_dm(IMX8MN_CLK_WDOG2_ROOT, + imx_clk_gate4("wdog2_root_clk", "wdog", base + 0x4540, 0)); + clk_dm(IMX8MN_CLK_WDOG3_ROOT, + imx_clk_gate4("wdog3_root_clk", "wdog", base + 0x4550, 0)); + clk_dm(IMX8MN_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(IMX8MN_CLK_WDOG1_ROOT, &clkp); + clk_enable(clkp); + clk_get_by_id(IMX8MN_CLK_WDOG2_ROOT, &clkp); + clk_enable(clkp); + clk_get_by_id(IMX8MN_CLK_WDOG3_ROOT, &clkp); + clk_enable(clkp); + + /* Configure SYS_PLL3 to 600MHz */ + clk_get_by_id(IMX8MN_SYS_PLL3, &clkp); + clk_set_rate(clkp, 600000000UL); + clk_enable(clkp); + + /* Configure ARM to sys_pll2_500m */ + clk_get_by_id(IMX8MN_CLK_A53_SRC, &clkp); + clk_get_by_id(IMX8MN_SYS_PLL2_OUT, &clkp1); + clk_enable(clkp1); + clk_get_by_id(IMX8MN_SYS_PLL2_500M, &clkp1); + clk_set_parent(clkp, clkp1); + + /* Configure ARM PLL to 1.2GHz */ + clk_get_by_id(IMX8MN_ARM_PLL, &clkp1); + clk_set_rate(clkp1, 1200000000UL); + clk_get_by_id(IMX8MN_ARM_PLL_OUT, &clkp1); + clk_enable(clkp1); + clk_set_parent(clkp, clkp1); + + /* Configure DIV to 1.2GHz */ + clk_get_by_id(IMX8MN_CLK_A53_DIV, &clkp1); + clk_set_rate(clkp1, 1200000000UL); +#endif + + return 0; +} + +static const struct udevice_id imx8mn_clk_ids[] = { + { .compatible = "fsl,imx8mn-ccm" }, + { }, +}; + +U_BOOT_DRIVER(imx8mn_clk) = { + .name = "clk_imx8mn", + .id = UCLASS_CLK, + .of_match = imx8mn_clk_ids, + .ops = &imx8mn_clk_ops, + .probe = imx8mn_clk_probe, + .flags = DM_FLAG_PRE_RELOC, +};