diff options
Diffstat (limited to 'arch/arm/mach-imx/imx8m/clock.c')
| -rw-r--r-- | arch/arm/mach-imx/imx8m/clock.c | 878 |
1 files changed, 878 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx8m/clock.c b/arch/arm/mach-imx/imx8m/clock.c new file mode 100644 index 0000000000..3766d988ba --- /dev/null +++ b/arch/arm/mach-imx/imx8m/clock.c @@ -0,0 +1,878 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2017 NXP + * + * Peng Fan <peng.fan@nxp.com> + */ + +#include <common.h> +#include <asm/arch/clock.h> +#include <asm/arch/imx-regs.h> +#include <asm/io.h> +#include <asm/arch/sys_proto.h> +#include <errno.h> +#include <linux/iopoll.h> + +static struct anamix_pll *ana_pll = (struct anamix_pll *)ANATOP_BASE_ADDR; + +static u32 decode_frac_pll(enum clk_root_src frac_pll) +{ + u32 pll_cfg0, pll_cfg1, pllout; + u32 pll_refclk_sel, pll_refclk; + u32 divr_val, divq_val, divf_val, divff, divfi; + u32 pllout_div_shift, pllout_div_mask, pllout_div; + + switch (frac_pll) { + case ARM_PLL_CLK: + pll_cfg0 = readl(&ana_pll->arm_pll_cfg0); + pll_cfg1 = readl(&ana_pll->arm_pll_cfg1); + pllout_div_shift = HW_FRAC_ARM_PLL_DIV_SHIFT; + pllout_div_mask = HW_FRAC_ARM_PLL_DIV_MASK; + break; + default: + printf("Frac PLL %d not supporte\n", frac_pll); + return 0; + } + + pllout_div = readl(&ana_pll->frac_pllout_div_cfg); + pllout_div = (pllout_div & pllout_div_mask) >> pllout_div_shift; + + /* Power down */ + if (pll_cfg0 & FRAC_PLL_PD_MASK) + return 0; + + /* output not enabled */ + if ((pll_cfg0 & FRAC_PLL_CLKE_MASK) == 0) + return 0; + + pll_refclk_sel = pll_cfg0 & FRAC_PLL_REFCLK_SEL_MASK; + + if (pll_refclk_sel == FRAC_PLL_REFCLK_SEL_OSC_25M) + pll_refclk = 25000000u; + else if (pll_refclk_sel == FRAC_PLL_REFCLK_SEL_OSC_27M) + pll_refclk = 27000000u; + else if (pll_refclk_sel == FRAC_PLL_REFCLK_SEL_HDMI_PHY_27M) + pll_refclk = 27000000u; + else + pll_refclk = 0; + + if (pll_cfg0 & FRAC_PLL_BYPASS_MASK) + return pll_refclk; + + divr_val = (pll_cfg0 & FRAC_PLL_REFCLK_DIV_VAL_MASK) >> + FRAC_PLL_REFCLK_DIV_VAL_SHIFT; + divq_val = pll_cfg0 & FRAC_PLL_OUTPUT_DIV_VAL_MASK; + + divff = (pll_cfg1 & FRAC_PLL_FRAC_DIV_CTL_MASK) >> + FRAC_PLL_FRAC_DIV_CTL_SHIFT; + divfi = pll_cfg1 & FRAC_PLL_INT_DIV_CTL_MASK; + + divf_val = 1 + divfi + divff / (1 << 24); + + pllout = pll_refclk / (divr_val + 1) * 8 * divf_val / + ((divq_val + 1) * 2); + + return pllout / (pllout_div + 1); +} + +static u32 decode_sscg_pll(enum clk_root_src sscg_pll) +{ + u32 pll_cfg0, pll_cfg1, pll_cfg2; + u32 pll_refclk_sel, pll_refclk; + u32 divr1, divr2, divf1, divf2, divq, div; + u32 sse; + u32 pll_clke; + u32 pllout_div_shift, pllout_div_mask, pllout_div; + u32 pllout; + + switch (sscg_pll) { + case SYSTEM_PLL1_800M_CLK: + case SYSTEM_PLL1_400M_CLK: + case SYSTEM_PLL1_266M_CLK: + case SYSTEM_PLL1_200M_CLK: + case SYSTEM_PLL1_160M_CLK: + case SYSTEM_PLL1_133M_CLK: + case SYSTEM_PLL1_100M_CLK: + case SYSTEM_PLL1_80M_CLK: + case SYSTEM_PLL1_40M_CLK: + pll_cfg0 = readl(&ana_pll->sys_pll1_cfg0); + pll_cfg1 = readl(&ana_pll->sys_pll1_cfg1); + pll_cfg2 = readl(&ana_pll->sys_pll1_cfg2); + pllout_div_shift = HW_SSCG_SYSTEM_PLL1_DIV_SHIFT; + pllout_div_mask = HW_SSCG_SYSTEM_PLL1_DIV_MASK; + break; + case SYSTEM_PLL2_1000M_CLK: + case SYSTEM_PLL2_500M_CLK: + case SYSTEM_PLL2_333M_CLK: + case SYSTEM_PLL2_250M_CLK: + case SYSTEM_PLL2_200M_CLK: + case SYSTEM_PLL2_166M_CLK: + case SYSTEM_PLL2_125M_CLK: + case SYSTEM_PLL2_100M_CLK: + case SYSTEM_PLL2_50M_CLK: + pll_cfg0 = readl(&ana_pll->sys_pll2_cfg0); + pll_cfg1 = readl(&ana_pll->sys_pll2_cfg1); + pll_cfg2 = readl(&ana_pll->sys_pll2_cfg2); + pllout_div_shift = HW_SSCG_SYSTEM_PLL2_DIV_SHIFT; + pllout_div_mask = HW_SSCG_SYSTEM_PLL2_DIV_MASK; + break; + case SYSTEM_PLL3_CLK: + pll_cfg0 = readl(&ana_pll->sys_pll3_cfg0); + pll_cfg1 = readl(&ana_pll->sys_pll3_cfg1); + pll_cfg2 = readl(&ana_pll->sys_pll3_cfg2); + pllout_div_shift = HW_SSCG_SYSTEM_PLL3_DIV_SHIFT; + pllout_div_mask = HW_SSCG_SYSTEM_PLL3_DIV_MASK; + break; + case DRAM_PLL1_CLK: + pll_cfg0 = readl(&ana_pll->dram_pll_cfg0); + pll_cfg1 = readl(&ana_pll->dram_pll_cfg1); + pll_cfg2 = readl(&ana_pll->dram_pll_cfg2); + pllout_div_shift = HW_SSCG_DRAM_PLL_DIV_SHIFT; + pllout_div_mask = HW_SSCG_DRAM_PLL_DIV_MASK; + break; + default: + printf("sscg pll %d not supporte\n", sscg_pll); + return 0; + } + + switch (sscg_pll) { + case DRAM_PLL1_CLK: + pll_clke = SSCG_PLL_DRAM_PLL_CLKE_MASK; + div = 1; + break; + case SYSTEM_PLL3_CLK: + pll_clke = SSCG_PLL_PLL3_CLKE_MASK; + div = 1; + break; + case SYSTEM_PLL2_1000M_CLK: + case SYSTEM_PLL1_800M_CLK: + pll_clke = SSCG_PLL_CLKE_MASK; + div = 1; + break; + case SYSTEM_PLL2_500M_CLK: + case SYSTEM_PLL1_400M_CLK: + pll_clke = SSCG_PLL_DIV2_CLKE_MASK; + div = 2; + break; + case SYSTEM_PLL2_333M_CLK: + case SYSTEM_PLL1_266M_CLK: + pll_clke = SSCG_PLL_DIV3_CLKE_MASK; + div = 3; + break; + case SYSTEM_PLL2_250M_CLK: + case SYSTEM_PLL1_200M_CLK: + pll_clke = SSCG_PLL_DIV4_CLKE_MASK; + div = 4; + break; + case SYSTEM_PLL2_200M_CLK: + case SYSTEM_PLL1_160M_CLK: + pll_clke = SSCG_PLL_DIV5_CLKE_MASK; + div = 5; + break; + case SYSTEM_PLL2_166M_CLK: + case SYSTEM_PLL1_133M_CLK: + pll_clke = SSCG_PLL_DIV6_CLKE_MASK; + div = 6; + break; + case SYSTEM_PLL2_125M_CLK: + case SYSTEM_PLL1_100M_CLK: + pll_clke = SSCG_PLL_DIV8_CLKE_MASK; + div = 8; + break; + case SYSTEM_PLL2_100M_CLK: + case SYSTEM_PLL1_80M_CLK: + pll_clke = SSCG_PLL_DIV10_CLKE_MASK; + div = 10; + break; + case SYSTEM_PLL2_50M_CLK: + case SYSTEM_PLL1_40M_CLK: + pll_clke = SSCG_PLL_DIV20_CLKE_MASK; + div = 20; + break; + default: + printf("sscg pll %d not supporte\n", sscg_pll); + return 0; + } + + /* Power down */ + if (pll_cfg0 & SSCG_PLL_PD_MASK) + return 0; + + /* output not enabled */ + if ((pll_cfg0 & pll_clke) == 0) + return 0; + + pllout_div = readl(&ana_pll->sscg_pllout_div_cfg); + pllout_div = (pllout_div & pllout_div_mask) >> pllout_div_shift; + + pll_refclk_sel = pll_cfg0 & SSCG_PLL_REFCLK_SEL_MASK; + + if (pll_refclk_sel == SSCG_PLL_REFCLK_SEL_OSC_25M) + pll_refclk = 25000000u; + else if (pll_refclk_sel == SSCG_PLL_REFCLK_SEL_OSC_27M) + pll_refclk = 27000000u; + else if (pll_refclk_sel == SSCG_PLL_REFCLK_SEL_HDMI_PHY_27M) + pll_refclk = 27000000u; + else + pll_refclk = 0; + + /* We assume bypass1/2 are the same value */ + if ((pll_cfg0 & SSCG_PLL_BYPASS1_MASK) || + (pll_cfg0 & SSCG_PLL_BYPASS2_MASK)) + return pll_refclk; + + divr1 = (pll_cfg2 & SSCG_PLL_REF_DIVR1_MASK) >> + SSCG_PLL_REF_DIVR1_SHIFT; + divr2 = (pll_cfg2 & SSCG_PLL_REF_DIVR2_MASK) >> + SSCG_PLL_REF_DIVR2_SHIFT; + divf1 = (pll_cfg2 & SSCG_PLL_FEEDBACK_DIV_F1_MASK) >> + SSCG_PLL_FEEDBACK_DIV_F1_SHIFT; + divf2 = (pll_cfg2 & SSCG_PLL_FEEDBACK_DIV_F2_MASK) >> + SSCG_PLL_FEEDBACK_DIV_F2_SHIFT; + divq = (pll_cfg2 & SSCG_PLL_OUTPUT_DIV_VAL_MASK) >> + SSCG_PLL_OUTPUT_DIV_VAL_SHIFT; + sse = pll_cfg1 & SSCG_PLL_SSE_MASK; + + if (sse) + sse = 8; + else + sse = 2; + + pllout = pll_refclk / (divr1 + 1) * sse * (divf1 + 1) / + (divr2 + 1) * (divf2 + 1) / (divq + 1); + + return pllout / (pllout_div + 1) / div; +} + +static u32 get_root_src_clk(enum clk_root_src root_src) +{ + switch (root_src) { + case OSC_25M_CLK: + return 25000000; + case OSC_27M_CLK: + return 25000000; + case OSC_32K_CLK: + return 32000; + case ARM_PLL_CLK: + return decode_frac_pll(root_src); + case SYSTEM_PLL1_800M_CLK: + case SYSTEM_PLL1_400M_CLK: + case SYSTEM_PLL1_266M_CLK: + case SYSTEM_PLL1_200M_CLK: + case SYSTEM_PLL1_160M_CLK: + case SYSTEM_PLL1_133M_CLK: + case SYSTEM_PLL1_100M_CLK: + case SYSTEM_PLL1_80M_CLK: + case SYSTEM_PLL1_40M_CLK: + case SYSTEM_PLL2_1000M_CLK: + case SYSTEM_PLL2_500M_CLK: + case SYSTEM_PLL2_333M_CLK: + case SYSTEM_PLL2_250M_CLK: + case SYSTEM_PLL2_200M_CLK: + case SYSTEM_PLL2_166M_CLK: + case SYSTEM_PLL2_125M_CLK: + case SYSTEM_PLL2_100M_CLK: + case SYSTEM_PLL2_50M_CLK: + case SYSTEM_PLL3_CLK: + return decode_sscg_pll(root_src); + default: + return 0; + } + + return 0; +} + +static u32 get_root_clk(enum clk_root_index clock_id) +{ + enum clk_root_src root_src; + u32 post_podf, pre_podf, root_src_clk; + + if (clock_root_enabled(clock_id) <= 0) + return 0; + + if (clock_get_prediv(clock_id, &pre_podf) < 0) + return 0; + + if (clock_get_postdiv(clock_id, &post_podf) < 0) + return 0; + + if (clock_get_src(clock_id, &root_src) < 0) + return 0; + + root_src_clk = get_root_src_clk(root_src); + + return root_src_clk / (post_podf + 1) / (pre_podf + 1); +} + +#ifdef CONFIG_MXC_OCOTP +void enable_ocotp_clk(unsigned char enable) +{ + clock_enable(CCGR_OCOTP, !!enable); +} +#endif + +int enable_i2c_clk(unsigned char enable, unsigned int i2c_num) +{ + /* 0 - 3 is valid i2c num */ + if (i2c_num > 3) + return -EINVAL; + + clock_enable(CCGR_I2C1 + i2c_num, !!enable); + + return 0; +} + +unsigned int mxc_get_clock(enum clk_root_index clk) +{ + u32 val; + + if (clk >= CLK_ROOT_MAX) + return 0; + + if (clk == MXC_ARM_CLK) + return get_root_clk(ARM_A53_CLK_ROOT); + + if (clk == MXC_IPG_CLK) { + clock_get_target_val(IPG_CLK_ROOT, &val); + val = val & 0x3; + return get_root_clk(AHB_CLK_ROOT) / (val + 1); + } + + return get_root_clk(clk); +} + +u32 imx_get_uartclk(void) +{ + return mxc_get_clock(UART1_CLK_ROOT); +} + +void mxs_set_lcdclk(u32 base_addr, u32 freq) +{ + /* + * LCDIF_PIXEL_CLK: select 800MHz root clock, + * select pre divider 8, output is 100 MHz + */ + clock_set_target_val(LCDIF_PIXEL_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(4) | + CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV8)); +} + +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_set_target_val(WDOG_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(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); +} + +void init_usb_clk(void) +{ + if (!is_usb_boot()) { + clock_enable(CCGR_USB_CTRL1, 0); + clock_enable(CCGR_USB_CTRL2, 0); + clock_enable(CCGR_USB_PHY1, 0); + clock_enable(CCGR_USB_PHY2, 0); + /* 500MHz */ + clock_set_target_val(USB_BUS_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1)); + /* 100MHz */ + clock_set_target_val(USB_CORE_REF_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1)); + /* 100MHz */ + clock_set_target_val(USB_PHY_REF_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1)); + clock_enable(CCGR_USB_CTRL1, 1); + clock_enable(CCGR_USB_CTRL2, 1); + clock_enable(CCGR_USB_PHY1, 1); + clock_enable(CCGR_USB_PHY2, 1); + } +} + +void init_uart_clk(u32 index) +{ + /* Set uart clock root 25M 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_clk_usdhc(u32 index) +{ + /* + * set usdhc clock root + * sys pll1 400M + */ + switch (index) { + case 0: + clock_enable(CCGR_USDHC1, 0); + clock_set_target_val(USDHC1_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2)); + clock_enable(CCGR_USDHC1, 1); + return; + case 1: + clock_enable(CCGR_USDHC2, 0); + clock_set_target_val(USDHC2_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2)); + clock_enable(CCGR_USDHC2, 1); + return; + default: + printf("Invalid usdhc index\n"); + return; + } +} + +int set_clk_qspi(void) +{ + /* + * set qspi root + * sys pll1 100M + */ + clock_enable(CCGR_QSPI, 0); + clock_set_target_val(QSPI_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(7)); + clock_enable(CCGR_QSPI, 1); + + return 0; +} + +#ifdef CONFIG_FEC_MXC +int set_clk_enet(enum enet_freq type) +{ + u32 target; + u32 enet1_ref; + + switch (type) { + case ENET_125MHZ: + enet1_ref = ENET1_REF_CLK_ROOT_FROM_PLL_ENET_MAIN_125M_CLK; + break; + case ENET_50MHZ: + enet1_ref = ENET1_REF_CLK_ROOT_FROM_PLL_ENET_MAIN_50M_CLK; + break; + case ENET_25MHZ: + enet1_ref = ENET1_REF_CLK_ROOT_FROM_PLL_ENET_MAIN_25M_CLK; + break; + default: + return -EINVAL; + } + + /* disable the clock first */ + clock_enable(CCGR_ENET1, 0); + clock_enable(CCGR_SIM_ENET, 0); + + /* set enet axi clock 266Mhz */ + target = CLK_ROOT_ON | ENET_AXI_CLK_ROOT_FROM_SYS1_PLL_266M | + CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); + clock_set_target_val(ENET_AXI_CLK_ROOT, target); + + target = CLK_ROOT_ON | enet1_ref | + CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); + clock_set_target_val(ENET_REF_CLK_ROOT, target); + + target = CLK_ROOT_ON | + ENET1_TIME_CLK_ROOT_FROM_PLL_ENET_MAIN_100M_CLK | + CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV4); + clock_set_target_val(ENET_TIMER_CLK_ROOT, target); + + /* enable clock */ + clock_enable(CCGR_SIM_ENET, 1); + clock_enable(CCGR_ENET1, 1); + + return 0; +} +#endif + +u32 imx_get_fecclk(void) +{ + return get_root_clk(ENET_AXI_CLK_ROOT); +} + +static struct dram_bypass_clk_setting imx8mq_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(imx8mq_dram_bypass_tbl); i++) { + if (clk_val == imx8mq_dram_bypass_tbl[i].clk) + break; + } + + if (i == ARRAY_SIZE(imx8mq_dram_bypass_tbl)) { + printf("No matched freq table %lu\n", clk_val); + return; + } + + config = &imx8mq_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)); +} + +#ifdef CONFIG_SPL_BUILD +void dram_pll_init(ulong pll_val) +{ + u32 val; + void __iomem *pll_control_reg = &ana_pll->dram_pll_cfg0; + void __iomem *pll_cfg_reg2 = &ana_pll->dram_pll_cfg2; + + /* Bypass */ + setbits_le32(pll_control_reg, SSCG_PLL_BYPASS1_MASK); + setbits_le32(pll_control_reg, SSCG_PLL_BYPASS2_MASK); + + switch (pll_val) { + case MHZ(800): + val = readl(pll_cfg_reg2); + val &= ~(SSCG_PLL_OUTPUT_DIV_VAL_MASK | + SSCG_PLL_FEEDBACK_DIV_F2_MASK | + SSCG_PLL_FEEDBACK_DIV_F1_MASK | + SSCG_PLL_REF_DIVR2_MASK); + val |= SSCG_PLL_OUTPUT_DIV_VAL(0); + val |= SSCG_PLL_FEEDBACK_DIV_F2_VAL(11); + val |= SSCG_PLL_FEEDBACK_DIV_F1_VAL(39); + val |= SSCG_PLL_REF_DIVR2_VAL(29); + writel(val, pll_cfg_reg2); + break; + case MHZ(600): + val = readl(pll_cfg_reg2); + val &= ~(SSCG_PLL_OUTPUT_DIV_VAL_MASK | + SSCG_PLL_FEEDBACK_DIV_F2_MASK | + SSCG_PLL_FEEDBACK_DIV_F1_MASK | + SSCG_PLL_REF_DIVR2_MASK); + val |= SSCG_PLL_OUTPUT_DIV_VAL(1); + val |= SSCG_PLL_FEEDBACK_DIV_F2_VAL(17); + val |= SSCG_PLL_FEEDBACK_DIV_F1_VAL(39); + val |= SSCG_PLL_REF_DIVR2_VAL(29); + writel(val, pll_cfg_reg2); + break; + case MHZ(400): + val = readl(pll_cfg_reg2); + val &= ~(SSCG_PLL_OUTPUT_DIV_VAL_MASK | + SSCG_PLL_FEEDBACK_DIV_F2_MASK | + SSCG_PLL_FEEDBACK_DIV_F1_MASK | + SSCG_PLL_REF_DIVR2_MASK); + val |= SSCG_PLL_OUTPUT_DIV_VAL(1); + val |= SSCG_PLL_FEEDBACK_DIV_F2_VAL(11); + val |= SSCG_PLL_FEEDBACK_DIV_F1_VAL(39); + val |= SSCG_PLL_REF_DIVR2_VAL(29); + writel(val, pll_cfg_reg2); + break; + case MHZ(167): + val = readl(pll_cfg_reg2); + val &= ~(SSCG_PLL_OUTPUT_DIV_VAL_MASK | + SSCG_PLL_FEEDBACK_DIV_F2_MASK | + SSCG_PLL_FEEDBACK_DIV_F1_MASK | + SSCG_PLL_REF_DIVR2_MASK); + val |= SSCG_PLL_OUTPUT_DIV_VAL(3); + val |= SSCG_PLL_FEEDBACK_DIV_F2_VAL(8); + val |= SSCG_PLL_FEEDBACK_DIV_F1_VAL(45); + val |= SSCG_PLL_REF_DIVR2_VAL(30); + writel(val, pll_cfg_reg2); + break; + default: + break; + } + + /* Clear power down bit */ + clrbits_le32(pll_control_reg, SSCG_PLL_PD_MASK); + /* Eanble ARM_PLL/SYS_PLL */ + setbits_le32(pll_control_reg, SSCG_PLL_DRAM_PLL_CLKE_MASK); + + /* Clear bypass */ + clrbits_le32(pll_control_reg, SSCG_PLL_BYPASS1_MASK); + __udelay(100); + clrbits_le32(pll_control_reg, SSCG_PLL_BYPASS2_MASK); + /* Wait lock */ + while (!(readl(pll_control_reg) & SSCG_PLL_LOCK_MASK)) + ; +} + +int frac_pll_init(u32 pll, enum frac_pll_out_val val) +{ + void __iomem *pll_cfg0, __iomem *pll_cfg1; + u32 val_cfg0, val_cfg1; + int ret; + + switch (pll) { + case ANATOP_ARM_PLL: + pll_cfg0 = &ana_pll->arm_pll_cfg0; + pll_cfg1 = &ana_pll->arm_pll_cfg1; + + if (val == FRAC_PLL_OUT_1000M) + val_cfg1 = FRAC_PLL_INT_DIV_CTL_VAL(49); + else + val_cfg1 = FRAC_PLL_INT_DIV_CTL_VAL(79); + val_cfg0 = FRAC_PLL_CLKE_MASK | FRAC_PLL_REFCLK_SEL_OSC_25M | + FRAC_PLL_LOCK_SEL_MASK | FRAC_PLL_NEWDIV_VAL_MASK | + FRAC_PLL_REFCLK_DIV_VAL(4) | + FRAC_PLL_OUTPUT_DIV_VAL(0); + break; + default: + return -EINVAL; + } + + /* bypass the clock */ + setbits_le32(pll_cfg0, FRAC_PLL_BYPASS_MASK); + /* Set the value */ + writel(val_cfg1, pll_cfg1); + writel(val_cfg0 | FRAC_PLL_BYPASS_MASK, pll_cfg0); + val_cfg0 = readl(pll_cfg0); + /* unbypass the clock */ + clrbits_le32(pll_cfg0, FRAC_PLL_BYPASS_MASK); + ret = readl_poll_timeout(pll_cfg0, val_cfg0, + val_cfg0 & FRAC_PLL_LOCK_MASK, 1); + if (ret) + printf("%s timeout\n", __func__); + clrbits_le32(pll_cfg0, FRAC_PLL_NEWDIV_VAL_MASK); + + return 0; +} + +int sscg_pll_init(u32 pll) +{ + void __iomem *pll_cfg0, __iomem *pll_cfg1, __iomem *pll_cfg2; + u32 val_cfg0, val_cfg1, val_cfg2, val; + u32 bypass1_mask = 0x20, bypass2_mask = 0x10; + int ret; + + switch (pll) { + case ANATOP_SYSTEM_PLL1: + pll_cfg0 = &ana_pll->sys_pll1_cfg0; + pll_cfg1 = &ana_pll->sys_pll1_cfg1; + pll_cfg2 = &ana_pll->sys_pll1_cfg2; + /* 800MHz */ + val_cfg2 = SSCG_PLL_FEEDBACK_DIV_F1_VAL(3) | + SSCG_PLL_FEEDBACK_DIV_F2_VAL(3); + val_cfg1 = 0; + val_cfg0 = SSCG_PLL_CLKE_MASK | SSCG_PLL_DIV2_CLKE_MASK | + SSCG_PLL_DIV3_CLKE_MASK | SSCG_PLL_DIV4_CLKE_MASK | + SSCG_PLL_DIV5_CLKE_MASK | SSCG_PLL_DIV6_CLKE_MASK | + SSCG_PLL_DIV8_CLKE_MASK | SSCG_PLL_DIV10_CLKE_MASK | + SSCG_PLL_DIV20_CLKE_MASK | SSCG_PLL_LOCK_SEL_MASK | + SSCG_PLL_REFCLK_SEL_OSC_25M; + break; + case ANATOP_SYSTEM_PLL2: + pll_cfg0 = &ana_pll->sys_pll2_cfg0; + pll_cfg1 = &ana_pll->sys_pll2_cfg1; + pll_cfg2 = &ana_pll->sys_pll2_cfg2; + /* 1000MHz */ + val_cfg2 = SSCG_PLL_FEEDBACK_DIV_F1_VAL(3) | + SSCG_PLL_FEEDBACK_DIV_F2_VAL(4); + val_cfg1 = 0; + val_cfg0 = SSCG_PLL_CLKE_MASK | SSCG_PLL_DIV2_CLKE_MASK | + SSCG_PLL_DIV3_CLKE_MASK | SSCG_PLL_DIV4_CLKE_MASK | + SSCG_PLL_DIV5_CLKE_MASK | SSCG_PLL_DIV6_CLKE_MASK | + SSCG_PLL_DIV8_CLKE_MASK | SSCG_PLL_DIV10_CLKE_MASK | + SSCG_PLL_DIV20_CLKE_MASK | SSCG_PLL_LOCK_SEL_MASK | + SSCG_PLL_REFCLK_SEL_OSC_25M; + break; + case ANATOP_SYSTEM_PLL3: + pll_cfg0 = &ana_pll->sys_pll3_cfg0; + pll_cfg1 = &ana_pll->sys_pll3_cfg1; + pll_cfg2 = &ana_pll->sys_pll3_cfg2; + /* 800MHz */ + val_cfg2 = SSCG_PLL_FEEDBACK_DIV_F1_VAL(3) | + SSCG_PLL_FEEDBACK_DIV_F2_VAL(3); + val_cfg1 = 0; + val_cfg0 = SSCG_PLL_PLL3_CLKE_MASK | SSCG_PLL_LOCK_SEL_MASK | + SSCG_PLL_REFCLK_SEL_OSC_25M; + break; + default: + return -EINVAL; + } + + /*bypass*/ + setbits_le32(pll_cfg0, bypass1_mask | bypass2_mask); + /* set value */ + writel(val_cfg2, pll_cfg2); + writel(val_cfg1, pll_cfg1); + /*unbypass1 and wait 70us */ + writel(val_cfg0 | bypass2_mask, pll_cfg1); + + __udelay(70); + + /* unbypass2 and wait lock */ + writel(val_cfg0, pll_cfg1); + ret = readl_poll_timeout(pll_cfg0, val, val & SSCG_PLL_LOCK_MASK, 1); + if (ret) + printf("%s timeout\n", __func__); + + return ret; +} + +int clock_init(void) +{ + u32 grade; + + clock_set_target_val(ARM_A53_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(0)); + + /* + * 8MQ only supports two grades: consumer and industrial. + * We set ARM clock to 1Ghz for consumer, 800Mhz for industrial + */ + grade = get_cpu_temp_grade(NULL, NULL); + if (!grade) { + frac_pll_init(ANATOP_ARM_PLL, FRAC_PLL_OUT_1000M); + clock_set_target_val(ARM_A53_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1)); + } else { + frac_pll_init(ANATOP_ARM_PLL, FRAC_PLL_OUT_1600M); + clock_set_target_val(ARM_A53_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2)); + } + /* + * According to ANAMIX SPEC + * sys pll1 fixed at 800MHz + * sys pll2 fixed at 1GHz + * Here we only enable the outputs. + */ + setbits_le32(&ana_pll->sys_pll1_cfg0, SSCG_PLL_CLKE_MASK | + SSCG_PLL_DIV2_CLKE_MASK | SSCG_PLL_DIV3_CLKE_MASK | + SSCG_PLL_DIV4_CLKE_MASK | SSCG_PLL_DIV5_CLKE_MASK | + SSCG_PLL_DIV6_CLKE_MASK | SSCG_PLL_DIV8_CLKE_MASK | + SSCG_PLL_DIV10_CLKE_MASK | SSCG_PLL_DIV20_CLKE_MASK); + + setbits_le32(&ana_pll->sys_pll2_cfg0, SSCG_PLL_CLKE_MASK | + SSCG_PLL_DIV2_CLKE_MASK | SSCG_PLL_DIV3_CLKE_MASK | + SSCG_PLL_DIV4_CLKE_MASK | SSCG_PLL_DIV5_CLKE_MASK | + SSCG_PLL_DIV6_CLKE_MASK | SSCG_PLL_DIV8_CLKE_MASK | + SSCG_PLL_DIV10_CLKE_MASK | SSCG_PLL_DIV20_CLKE_MASK); + + clock_set_target_val(NAND_USDHC_BUS_CLK_ROOT, CLK_ROOT_ON | + CLK_ROOT_SOURCE_SEL(1)); + + init_wdog_clk(); + clock_enable(CCGR_TSENSOR, 1); + + return 0; +} +#endif + +/* + * Dump some clockes. + */ +#ifndef CONFIG_SPL_BUILD +int do_imx8m_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + u32 freq; + + freq = decode_frac_pll(ARM_PLL_CLK); + printf("ARM_PLL %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL1_800M_CLK); + printf("SYS_PLL1_800 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL1_400M_CLK); + printf("SYS_PLL1_400 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL1_266M_CLK); + printf("SYS_PLL1_266 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL1_200M_CLK); + printf("SYS_PLL1_200 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL1_160M_CLK); + printf("SYS_PLL1_160 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL1_133M_CLK); + printf("SYS_PLL1_133 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL1_100M_CLK); + printf("SYS_PLL1_100 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL1_80M_CLK); + printf("SYS_PLL1_80 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL1_40M_CLK); + printf("SYS_PLL1_40 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL2_1000M_CLK); + printf("SYS_PLL2_1000 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL2_500M_CLK); + printf("SYS_PLL2_500 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL2_333M_CLK); + printf("SYS_PLL2_333 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL2_250M_CLK); + printf("SYS_PLL2_250 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL2_200M_CLK); + printf("SYS_PLL2_200 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL2_166M_CLK); + printf("SYS_PLL2_166 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL2_125M_CLK); + printf("SYS_PLL2_125 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL2_100M_CLK); + printf("SYS_PLL2_100 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL2_50M_CLK); + printf("SYS_PLL2_50 %8d MHz\n", freq / 1000000); + freq = decode_sscg_pll(SYSTEM_PLL3_CLK); + printf("SYS_PLL3 %8d MHz\n", freq / 1000000); + freq = mxc_get_clock(UART1_CLK_ROOT); + printf("UART1 %8d MHz\n", freq / 1000000); + freq = mxc_get_clock(USDHC1_CLK_ROOT); + printf("USDHC1 %8d MHz\n", freq / 1000000); + freq = mxc_get_clock(QSPI_CLK_ROOT); + printf("QSPI %8d MHz\n", freq / 1000000); + return 0; +} + +U_BOOT_CMD( + clocks, CONFIG_SYS_MAXARGS, 1, do_imx8m_showclocks, + "display clocks", + "" +); +#endif |