diff options
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/imx8m/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-imx/imx8m/clock_imx8mm.c | 306 | ||||
| -rw-r--r-- | arch/arm/mach-imx/imx8m/clock_slice.c | 63 |
3 files changed, 370 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx8m/Makefile b/arch/arm/mach-imx/imx8m/Makefile index 42a1544c6b..92184f3135 100644 --- a/arch/arm/mach-imx/imx8m/Makefile +++ b/arch/arm/mach-imx/imx8m/Makefile @@ -5,3 +5,4 @@ obj-y += lowlevel_init.o obj-y += clock_slice.o soc.o obj-$(CONFIG_IMX8MQ) += clock_imx8mq.o +obj-$(CONFIG_IMX8MM) += clock_imx8mm.o diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mm.c b/arch/arm/mach-imx/imx8m/clock_imx8mm.c new file mode 100644 index 0000000000..ee44ba75fe --- /dev/null +++ b/arch/arm/mach-imx/imx8m/clock_imx8mm.c @@ -0,0 +1,306 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2018-2019 NXP + * + * Peng Fan <peng.fan@nxp.com> + */ + +#include <common.h> +#include <asm/arch/clock.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/sys_proto.h> +#include <asm/io.h> +#include <clk.h> +#include <clk-uclass.h> +#include <dt-bindings/clock/imx8mm-clock.h> +#include <div64.h> +#include <errno.h> + +DECLARE_GLOBAL_DATA_PTR; + +static struct anamix_pll *ana_pll = (struct anamix_pll *)ANATOP_BASE_ADDR; + +void enable_ocotp_clk(unsigned char enable) +{ + struct clk *clkp; + int ret; + + ret = clk_get_by_id(IMX8MM_CLK_OCOTP_ROOT, &clkp); + if (ret) { + printf("%s: err: %d\n", __func__, ret); + return; + } + + enable ? clk_enable(clkp) : clk_disable(clkp); +} + +int enable_i2c_clk(unsigned char enable, unsigned i2c_num) +{ + struct clk *clkp; + int ret; + + ret = clk_get_by_id(IMX8MM_CLK_I2C1_ROOT + i2c_num, &clkp); + if (ret) { + printf("%s: err: %d\n", __func__, ret); + return ret; + } + + return enable ? clk_enable(clkp) : clk_disable(clkp); +} + +#ifdef CONFIG_SPL_BUILD +static struct imx_int_pll_rate_table imx8mm_fracpll_tbl[] = { + PLL_1443X_RATE(800000000U, 300, 9, 0, 0), + PLL_1443X_RATE(750000000U, 250, 8, 0, 0), + PLL_1443X_RATE(650000000U, 325, 3, 2, 0), + PLL_1443X_RATE(600000000U, 300, 3, 2, 0), + PLL_1443X_RATE(594000000U, 99, 1, 2, 0), + PLL_1443X_RATE(400000000U, 300, 9, 1, 0), + PLL_1443X_RATE(266666667U, 400, 9, 2, 0), + PLL_1443X_RATE(167000000U, 334, 3, 4, 0), + PLL_1443X_RATE(100000000U, 300, 9, 3, 0), +}; + +int fracpll_configure(enum pll_clocks pll, u32 freq) +{ + int i; + u32 tmp, div_val; + void *pll_base; + struct imx_int_pll_rate_table *rate; + + for (i = 0; i < ARRAY_SIZE(imx8mm_fracpll_tbl); i++) { + if (freq == imx8mm_fracpll_tbl[i].rate) + break; + } + + if (i == ARRAY_SIZE(imx8mm_fracpll_tbl)) { + printf("No matched freq table %u\n", freq); + return -EINVAL; + } + + rate = &imx8mm_fracpll_tbl[i]; + + switch (pll) { + case ANATOP_DRAM_PLL: + setbits_le32(GPC_BASE_ADDR + 0xEC, 1 << 7); + setbits_le32(GPC_BASE_ADDR + 0xF8, 1 << 5); + writel(SRC_DDR1_ENABLE_MASK, SRC_BASE_ADDR + 0x1004); + + pll_base = &ana_pll->dram_pll_gnrl_ctl; + break; + case ANATOP_VIDEO_PLL: + pll_base = &ana_pll->video_pll1_gnrl_ctl; + break; + default: + return 0; + } + /* Bypass clock and set lock to pll output lock */ + tmp = readl(pll_base); + tmp |= BYPASS_MASK; + writel(tmp, pll_base); + + /* Enable RST */ + tmp &= ~RST_MASK; + writel(tmp, pll_base); + + div_val = (rate->mdiv << MDIV_SHIFT) | (rate->pdiv << PDIV_SHIFT) | + (rate->sdiv << SDIV_SHIFT); + writel(div_val, pll_base + 4); + writel(rate->kdiv << KDIV_SHIFT, pll_base + 8); + + __udelay(100); + + /* Disable RST */ + tmp |= RST_MASK; + writel(tmp, pll_base); + + /* Wait Lock*/ + while (!(readl(pll_base) & LOCK_STATUS)) + ; + + /* Bypass */ + tmp &= ~BYPASS_MASK; + writel(tmp, pll_base); + + return 0; +} + +void dram_pll_init(ulong pll_val) +{ + fracpll_configure(ANATOP_DRAM_PLL, pll_val); +} + +static struct dram_bypass_clk_setting imx8mm_dram_bypass_tbl[] = { + DRAM_BYPASS_ROOT_CONFIG(MHZ(100), 2, CLK_ROOT_PRE_DIV1, 2, + CLK_ROOT_PRE_DIV2), + DRAM_BYPASS_ROOT_CONFIG(MHZ(250), 3, CLK_ROOT_PRE_DIV2, 2, + CLK_ROOT_PRE_DIV2), + DRAM_BYPASS_ROOT_CONFIG(MHZ(400), 1, CLK_ROOT_PRE_DIV2, 3, + CLK_ROOT_PRE_DIV2), +}; + +void dram_enable_bypass(ulong clk_val) +{ + int i; + struct dram_bypass_clk_setting *config; + + for (i = 0; i < ARRAY_SIZE(imx8mm_dram_bypass_tbl); i++) { + if (clk_val == imx8mm_dram_bypass_tbl[i].clk) + break; + } + + if (i == ARRAY_SIZE(imx8mm_dram_bypass_tbl)) { + printf("No matched freq table %lu\n", clk_val); + return; + } + + config = &imx8mm_dram_bypass_tbl[i]; + + clock_set_target_val(DRAM_ALT_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(config->alt_root_sel) | + CLK_ROOT_PRE_DIV(config->alt_pre_div)); + clock_set_target_val(DRAM_APB_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(config->apb_root_sel) | + CLK_ROOT_PRE_DIV(config->apb_pre_div)); + clock_set_target_val(DRAM_SEL_CFG, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1)); +} + +void dram_disable_bypass(void) +{ + clock_set_target_val(DRAM_SEL_CFG, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(0)); + clock_set_target_val(DRAM_APB_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(4) | + CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV5)); +} +#endif + +void init_uart_clk(u32 index) +{ + /* + * set uart clock root + * 24M OSC + */ + switch (index) { + case 0: + clock_enable(CCGR_UART1, 0); + clock_set_target_val(UART1_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(0)); + clock_enable(CCGR_UART1, 1); + return; + case 1: + clock_enable(CCGR_UART2, 0); + clock_set_target_val(UART2_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(0)); + clock_enable(CCGR_UART2, 1); + return; + case 2: + clock_enable(CCGR_UART3, 0); + clock_set_target_val(UART3_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(0)); + clock_enable(CCGR_UART3, 1); + return; + case 3: + clock_enable(CCGR_UART4, 0); + clock_set_target_val(UART4_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(0)); + clock_enable(CCGR_UART4, 1); + return; + default: + printf("Invalid uart index\n"); + return; + } +} + +void init_wdog_clk(void) +{ + clock_enable(CCGR_WDOG1, 0); + clock_enable(CCGR_WDOG2, 0); + clock_enable(CCGR_WDOG3, 0); + clock_set_target_val(WDOG_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(0)); + clock_enable(CCGR_WDOG1, 1); + clock_enable(CCGR_WDOG2, 1); + clock_enable(CCGR_WDOG3, 1); +} + +int clock_init(void) +{ + u32 val_cfg0; + + /* + * The gate is not exported to clk tree, so configure them here. + * According to ANAMIX SPEC + * sys pll1 fixed at 800MHz + * sys pll2 fixed at 1GHz + * Here we only enable the outputs. + */ + val_cfg0 = readl(&ana_pll->sys_pll1_gnrl_ctl); + val_cfg0 |= INTPLL_CLKE_MASK | INTPLL_DIV2_CLKE_MASK | + INTPLL_DIV3_CLKE_MASK | INTPLL_DIV4_CLKE_MASK | + INTPLL_DIV5_CLKE_MASK | INTPLL_DIV6_CLKE_MASK | + INTPLL_DIV8_CLKE_MASK | INTPLL_DIV10_CLKE_MASK | + INTPLL_DIV20_CLKE_MASK; + writel(val_cfg0, &ana_pll->sys_pll1_gnrl_ctl); + + val_cfg0 = readl(&ana_pll->sys_pll2_gnrl_ctl); + val_cfg0 |= INTPLL_CLKE_MASK | INTPLL_DIV2_CLKE_MASK | + INTPLL_DIV3_CLKE_MASK | INTPLL_DIV4_CLKE_MASK | + INTPLL_DIV5_CLKE_MASK | INTPLL_DIV6_CLKE_MASK | + INTPLL_DIV8_CLKE_MASK | INTPLL_DIV10_CLKE_MASK | + INTPLL_DIV20_CLKE_MASK; + writel(val_cfg0, &ana_pll->sys_pll2_gnrl_ctl); + + /* config GIC to sys_pll2_100m */ + clock_enable(CCGR_GIC, 0); + clock_set_target_val(GIC_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(3)); + clock_enable(CCGR_GIC, 1); + + clock_set_target_val(NAND_USDHC_BUS_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1)); + + clock_enable(CCGR_DDR1, 0); + clock_set_target_val(DRAM_ALT_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1)); + clock_set_target_val(DRAM_APB_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1)); + clock_enable(CCGR_DDR1, 1); + + init_wdog_clk(); + + clock_enable(CCGR_TEMP_SENSOR, 1); + + clock_enable(CCGR_SEC_DEBUG, 1); + + return 0; +}; + +u32 imx_get_uartclk(void) +{ + return 24000000U; +} + +u32 mxc_get_clock(enum mxc_clock clk) +{ + struct clk *clkp; + int ret; + + switch (clk) { + case MXC_IPG_CLK: + ret = clk_get_by_id(IMX8MM_CLK_IPG_ROOT, &clkp); + if (ret) + return 0; + return clk_get_rate(clkp); + case MXC_ARM_CLK: + ret = clk_get_by_id(IMX8MM_CLK_A53_DIV, &clkp); + if (ret) + return 0; + return clk_get_rate(clkp); + default: + printf("%s: %d not supported\n", __func__, clk); + } + + return 0; +} diff --git a/arch/arm/mach-imx/imx8m/clock_slice.c b/arch/arm/mach-imx/imx8m/clock_slice.c index 1a67c626f1..780f64314d 100644 --- a/arch/arm/mach-imx/imx8m/clock_slice.c +++ b/arch/arm/mach-imx/imx8m/clock_slice.c @@ -13,6 +13,7 @@ static struct ccm_reg *ccm_reg = (struct ccm_reg *)CCM_BASE_ADDR; +#ifdef CONFIG_IMX8MQ static struct clk_root_map root_array[] = { {ARM_A53_CLK_ROOT, CORE_CLOCK_SLICE, 0, {OSC_25M_CLK, ARM_PLL_CLK, SYSTEM_PLL2_500M_CLK, @@ -474,6 +475,68 @@ static struct clk_root_map root_array[] = { {DRAM_PLL1_CLK} }, }; +#elif defined(CONFIG_IMX8MM) +static struct clk_root_map root_array[] = { + {NAND_USDHC_BUS_CLK_ROOT, BUS_CLOCK_SLICE, 2, + {OSC_24M_CLK, SYSTEM_PLL1_266M_CLK, SYSTEM_PLL1_800M_CLK, + SYSTEM_PLL2_200M_CLK, SYSTEM_PLL1_133M_CLK, + SYSTEM_PLL3_CLK, SYSTEM_PLL2_250M_CLK, AUDIO_PLL1_CLK} + }, + {NOC_CLK_ROOT, BUS_CLOCK_SLICE, 10, + {OSC_24M_CLK, SYSTEM_PLL1_800M_CLK, SYSTEM_PLL3_CLK, + SYSTEM_PLL2_1000M_CLK, SYSTEM_PLL2_500M_CLK, + AUDIO_PLL1_CLK, VIDEO_PLL_CLK, AUDIO_PLL2_CLK} + }, + {NOC_APB_CLK_ROOT, BUS_CLOCK_SLICE, 11, + {OSC_24M_CLK, SYSTEM_PLL1_400M_CLK, SYSTEM_PLL3_CLK, + SYSTEM_PLL2_333M_CLK, SYSTEM_PLL2_200M_CLK, + SYSTEM_PLL1_800M_CLK, AUDIO_PLL1_CLK, VIDEO_PLL_CLK} + }, + {DRAM_ALT_CLK_ROOT, IP_CLOCK_SLICE, 0, + {OSC_24M_CLK, SYSTEM_PLL1_800M_CLK, SYSTEM_PLL1_100M_CLK, + SYSTEM_PLL2_500M_CLK, SYSTEM_PLL2_1000M_CLK, + SYSTEM_PLL3_CLK, AUDIO_PLL1_CLK, SYSTEM_PLL1_266M_CLK} + }, + {DRAM_APB_CLK_ROOT, IP_CLOCK_SLICE, 1, + {OSC_24M_CLK, SYSTEM_PLL2_200M_CLK, SYSTEM_PLL1_40M_CLK, + SYSTEM_PLL1_160M_CLK, SYSTEM_PLL1_800M_CLK, + SYSTEM_PLL3_CLK, SYSTEM_PLL2_250M_CLK, AUDIO_PLL2_CLK} + }, + {UART1_CLK_ROOT, IP_CLOCK_SLICE, 30, + {OSC_24M_CLK, SYSTEM_PLL1_80M_CLK, SYSTEM_PLL2_200M_CLK, + SYSTEM_PLL2_100M_CLK, SYSTEM_PLL3_CLK, + EXT_CLK_2, EXT_CLK_4, AUDIO_PLL2_CLK} + }, + {UART2_CLK_ROOT, IP_CLOCK_SLICE, 31, + {OSC_24M_CLK, SYSTEM_PLL1_80M_CLK, SYSTEM_PLL2_200M_CLK, + SYSTEM_PLL2_100M_CLK, SYSTEM_PLL3_CLK, + EXT_CLK_2, EXT_CLK_3, AUDIO_PLL2_CLK} + }, + {UART3_CLK_ROOT, IP_CLOCK_SLICE, 32, + {OSC_24M_CLK, SYSTEM_PLL1_80M_CLK, SYSTEM_PLL2_200M_CLK, + SYSTEM_PLL2_100M_CLK, SYSTEM_PLL3_CLK, + EXT_CLK_2, EXT_CLK_4, AUDIO_PLL2_CLK} + }, + {UART4_CLK_ROOT, IP_CLOCK_SLICE, 33, + {OSC_24M_CLK, SYSTEM_PLL1_80M_CLK, SYSTEM_PLL2_200M_CLK, + SYSTEM_PLL2_100M_CLK, SYSTEM_PLL3_CLK, + EXT_CLK_2, EXT_CLK_3, AUDIO_PLL2_CLK} + }, + {GIC_CLK_ROOT, IP_CLOCK_SLICE, 36, + {OSC_24M_CLK, SYSTEM_PLL2_200M_CLK, SYSTEM_PLL1_40M_CLK, + SYSTEM_PLL2_100M_CLK, SYSTEM_PLL1_800M_CLK, + EXT_CLK_2, EXT_CLK_4, AUDIO_PLL2_CLK} + }, + {WDOG_CLK_ROOT, IP_CLOCK_SLICE, 50, + {OSC_24M_CLK, SYSTEM_PLL1_133M_CLK, SYSTEM_PLL1_160M_CLK, + VPU_PLL_CLK, SYSTEM_PLL2_125M_CLK, + SYSTEM_PLL3_CLK, SYSTEM_PLL1_80M_CLK, SYSTEM_PLL2_166M_CLK} + }, + {DRAM_SEL_CFG, DRAM_SEL_CLOCK_SLICE, 0, + {DRAM_PLL1_CLK} + }, +}; +#endif static int select(enum clk_root_index clock_id) { |