| /* |
| * Copyright (C) 2014-2015 Freescale Semiconductor, Inc. |
| * |
| * Author: |
| * Peng Fan <Peng.Fan@freescale.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <div64.h> |
| #include <asm/io.h> |
| #include <asm/errno.h> |
| #include <asm/arch/imx-regs.h> |
| #include <asm/arch/crm_regs.h> |
| #include <asm/arch/clock.h> |
| #include <asm/arch/sys_proto.h> |
| |
| struct mxc_ccm_anatop_reg *ccm_anatop = (struct mxc_ccm_anatop_reg *) |
| ANATOP_BASE_ADDR; |
| struct mxc_ccm_reg *ccm_reg = (struct mxc_ccm_reg *)CCM_BASE_ADDR; |
| |
| #ifdef CONFIG_FSL_ESDHC |
| DECLARE_GLOBAL_DATA_PTR; |
| #endif |
| |
| int get_clocks(void) |
| { |
| #ifdef CONFIG_FSL_ESDHC |
| #if CONFIG_SYS_FSL_ESDHC_ADDR == USDHC2_BASE_ADDR |
| gd->arch.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); |
| #elif CONFIG_SYS_FSL_ESDHC_ADDR == USDHC3_BASE_ADDR |
| gd->arch.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); |
| #else |
| gd->arch.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); |
| #endif |
| #endif |
| return 0; |
| } |
| |
| u32 get_ahb_clk(void) |
| { |
| return get_root_clk(AHB_CLK_ROOT); |
| } |
| |
| static u32 get_ipg_clk(void) |
| { |
| /* |
| * The AHB and IPG are fixed at 2:1 ratio, and synchronized to |
| * each other. |
| */ |
| return get_ahb_clk() / 2; |
| } |
| |
| u32 imx_get_uartclk(void) |
| { |
| return get_root_clk(UART1_CLK_ROOT); |
| } |
| |
| u32 imx_get_fecclk(void) |
| { |
| return get_root_clk(ENET_AXI_CLK_ROOT); |
| } |
| |
| #ifdef CONFIG_MXC_OCOTP |
| void enable_ocotp_clk(unsigned char enable) |
| { |
| clock_enable(CCGR_OCOTP, enable); |
| } |
| |
| void enable_thermal_clk(void) |
| { |
| enable_ocotp_clk(1); |
| } |
| #endif |
| |
| void enable_usboh3_clk(unsigned char enable) |
| { |
| u32 target; |
| |
| if (enable) { |
| /* disable the clock gate first */ |
| clock_enable(CCGR_USB_HSIC, 0); |
| |
| /* 120Mhz */ |
| target = CLK_ROOT_ON | USB_HSIC_CLK_ROOT_FROM_PLL_SYS_MAIN_480M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(USB_HSIC_CLK_ROOT, target); |
| |
| /* enable the clock gate */ |
| clock_enable(CCGR_USB_CTRL, 1); |
| clock_enable(CCGR_USB_HSIC, 1); |
| clock_enable(CCGR_USB_PHY1, 1); |
| clock_enable(CCGR_USB_PHY2, 1); |
| } else { |
| clock_enable(CCGR_USB_CTRL, 0); |
| clock_enable(CCGR_USB_HSIC, 0); |
| clock_enable(CCGR_USB_PHY1, 0); |
| clock_enable(CCGR_USB_PHY2, 0); |
| } |
| |
| } |
| |
| static u32 decode_pll(enum pll_clocks pll, u32 infreq) |
| { |
| u32 reg, div_sel; |
| u32 num, denom; |
| |
| /* |
| * Alought there are four choices for the bypass src, |
| * we choose OSC_24M which is the default set in ROM. |
| */ |
| switch (pll) { |
| case PLL_CORE: |
| reg = readl(&ccm_anatop->pll_arm); |
| |
| if (reg & CCM_ANALOG_PLL_ARM_POWERDOWN_MASK) |
| return 0; |
| |
| if (reg & CCM_ANALOG_PLL_ARM_BYPASS_MASK) |
| return MXC_HCLK; |
| |
| div_sel = (reg & CCM_ANALOG_PLL_ARM_DIV_SELECT_MASK) >> |
| CCM_ANALOG_PLL_ARM_DIV_SELECT_SHIFT; |
| |
| return (infreq * div_sel) / 2; |
| |
| case PLL_SYS: |
| reg = readl(&ccm_anatop->pll_480); |
| |
| if (reg & CCM_ANALOG_PLL_480_POWERDOWN_MASK) |
| return 0; |
| |
| if (reg & CCM_ANALOG_PLL_480_BYPASS_MASK) |
| return MXC_HCLK; |
| |
| if (((reg & CCM_ANALOG_PLL_480_DIV_SELECT_MASK) >> |
| CCM_ANALOG_PLL_480_DIV_SELECT_SHIFT) == 0) |
| return 480000000u; |
| else |
| return 528000000u; |
| |
| case PLL_ENET: |
| reg = readl(&ccm_anatop->pll_enet); |
| |
| if (reg & CCM_ANALOG_PLL_ENET_POWERDOWN_MASK) |
| return 0; |
| |
| if (reg & CCM_ANALOG_PLL_ENET_BYPASS_MASK) |
| return MXC_HCLK; |
| |
| return 1000000000u; |
| |
| case PLL_DDR: |
| reg = readl(&ccm_anatop->pll_ddr); |
| |
| if (reg & CCM_ANALOG_PLL_DDR_POWERDOWN_MASK) |
| return 0; |
| |
| num = ccm_anatop->pll_ddr_num; |
| denom = ccm_anatop->pll_ddr_denom; |
| |
| if (reg & CCM_ANALOG_PLL_DDR_BYPASS_MASK) |
| return MXC_HCLK; |
| |
| div_sel = (reg & CCM_ANALOG_PLL_DDR_DIV_SELECT_MASK) >> |
| CCM_ANALOG_PLL_DDR_DIV_SELECT_SHIFT; |
| |
| return infreq * (div_sel + num / denom); |
| |
| case PLL_USB: |
| return 480000000u; |
| |
| default: |
| printf("Unsupported pll clocks %d\n", pll); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static u32 mxc_get_pll_sys_derive(int derive) |
| { |
| u32 freq, div, frac; |
| u32 reg; |
| |
| div = 1; |
| reg = readl(&ccm_anatop->pll_480); |
| freq = decode_pll(PLL_SYS, MXC_HCLK); |
| |
| switch (derive) { |
| case PLL_SYS_MAIN_480M_CLK: |
| if (reg & CCM_ANALOG_PLL_480_MAIN_DIV1_CLKGATE_MASK) |
| return 0; |
| else |
| return freq; |
| case PLL_SYS_MAIN_240M_CLK: |
| if (reg & CCM_ANALOG_PLL_480_MAIN_DIV2_CLKGATE_MASK) |
| return 0; |
| else |
| return freq / 2; |
| case PLL_SYS_MAIN_120M_CLK: |
| if (reg & CCM_ANALOG_PLL_480_MAIN_DIV4_CLKGATE_MASK) |
| return 0; |
| else |
| return freq / 4; |
| case PLL_SYS_PFD0_392M_CLK: |
| reg = readl(&ccm_anatop->pfd_480a); |
| if (reg & CCM_ANALOG_PFD_480A_PFD0_DIV1_CLKGATE_MASK) |
| return 0; |
| frac = (reg & CCM_ANALOG_PFD_480A_PFD0_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480A_PFD0_FRAC_SHIFT; |
| break; |
| case PLL_SYS_PFD0_196M_CLK: |
| if (reg & CCM_ANALOG_PLL_480_PFD0_DIV2_CLKGATE_MASK) |
| return 0; |
| reg = readl(&ccm_anatop->pfd_480a); |
| frac = (reg & CCM_ANALOG_PFD_480A_PFD0_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480A_PFD0_FRAC_SHIFT; |
| div = 2; |
| break; |
| case PLL_SYS_PFD1_332M_CLK: |
| reg = readl(&ccm_anatop->pfd_480a); |
| if (reg & CCM_ANALOG_PFD_480A_PFD1_DIV1_CLKGATE_MASK) |
| return 0; |
| frac = (reg & CCM_ANALOG_PFD_480A_PFD1_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480A_PFD1_FRAC_SHIFT; |
| break; |
| case PLL_SYS_PFD1_166M_CLK: |
| if (reg & CCM_ANALOG_PLL_480_PFD1_DIV2_CLKGATE_MASK) |
| return 0; |
| reg = readl(&ccm_anatop->pfd_480a); |
| frac = (reg & CCM_ANALOG_PFD_480A_PFD1_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480A_PFD1_FRAC_SHIFT; |
| div = 2; |
| break; |
| case PLL_SYS_PFD2_270M_CLK: |
| reg = readl(&ccm_anatop->pfd_480a); |
| if (reg & CCM_ANALOG_PFD_480A_PFD2_DIV1_CLKGATE_MASK) |
| return 0; |
| frac = (reg & CCM_ANALOG_PFD_480A_PFD2_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480A_PFD2_FRAC_SHIFT; |
| break; |
| case PLL_SYS_PFD2_135M_CLK: |
| if (reg & CCM_ANALOG_PLL_480_PFD2_DIV2_CLKGATE_MASK) |
| return 0; |
| reg = readl(&ccm_anatop->pfd_480a); |
| frac = (reg & CCM_ANALOG_PFD_480A_PFD2_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480A_PFD2_FRAC_SHIFT; |
| div = 2; |
| break; |
| case PLL_SYS_PFD3_CLK: |
| reg = readl(&ccm_anatop->pfd_480a); |
| if (reg & CCM_ANALOG_PFD_480A_PFD3_DIV1_CLKGATE_MASK) |
| return 0; |
| frac = (reg & CCM_ANALOG_PFD_480A_PFD3_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480A_PFD3_FRAC_SHIFT; |
| break; |
| case PLL_SYS_PFD4_CLK: |
| reg = readl(&ccm_anatop->pfd_480b); |
| if (reg & CCM_ANALOG_PFD_480B_PFD4_DIV1_CLKGATE_MASK) |
| return 0; |
| frac = (reg & CCM_ANALOG_PFD_480B_PFD4_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480B_PFD4_FRAC_SHIFT; |
| break; |
| case PLL_SYS_PFD5_CLK: |
| reg = readl(&ccm_anatop->pfd_480b); |
| if (reg & CCM_ANALOG_PFD_480B_PFD5_DIV1_CLKGATE_MASK) |
| return 0; |
| frac = (reg & CCM_ANALOG_PFD_480B_PFD5_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480B_PFD5_FRAC_SHIFT; |
| break; |
| case PLL_SYS_PFD6_CLK: |
| reg = readl(&ccm_anatop->pfd_480b); |
| if (reg & CCM_ANALOG_PFD_480B_PFD6_DIV1_CLKGATE_MASK) |
| return 0; |
| frac = (reg & CCM_ANALOG_PFD_480B_PFD6_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480B_PFD6_FRAC_SHIFT; |
| break; |
| case PLL_SYS_PFD7_CLK: |
| reg = readl(&ccm_anatop->pfd_480b); |
| if (reg & CCM_ANALOG_PFD_480B_PFD7_DIV1_CLKGATE_MASK) |
| return 0; |
| frac = (reg & CCM_ANALOG_PFD_480B_PFD7_FRAC_MASK) >> |
| CCM_ANALOG_PFD_480B_PFD7_FRAC_SHIFT; |
| break; |
| default: |
| printf("Error derived pll_sys clock %d\n", derive); |
| return 0; |
| } |
| |
| return ((freq / frac) * 18) / div; |
| } |
| |
| static u32 mxc_get_pll_enet_derive(int derive) |
| { |
| u32 freq, reg; |
| |
| freq = decode_pll(PLL_ENET, MXC_HCLK); |
| reg = readl(&ccm_anatop->pll_enet); |
| |
| switch (derive) { |
| case PLL_ENET_MAIN_500M_CLK: |
| if (reg & CCM_ANALOG_PLL_ENET_ENABLE_CLK_500MHZ_MASK) |
| return freq / 2; |
| break; |
| case PLL_ENET_MAIN_250M_CLK: |
| if (reg & CCM_ANALOG_PLL_ENET_ENABLE_CLK_250MHZ_MASK) |
| return freq / 4; |
| break; |
| case PLL_ENET_MAIN_125M_CLK: |
| if (reg & CCM_ANALOG_PLL_ENET_ENABLE_CLK_125MHZ_MASK) |
| return freq / 8; |
| break; |
| case PLL_ENET_MAIN_100M_CLK: |
| if (reg & CCM_ANALOG_PLL_ENET_ENABLE_CLK_100MHZ_MASK) |
| return freq / 10; |
| break; |
| case PLL_ENET_MAIN_50M_CLK: |
| if (reg & CCM_ANALOG_PLL_ENET_ENABLE_CLK_50MHZ_MASK) |
| return freq / 20; |
| break; |
| case PLL_ENET_MAIN_40M_CLK: |
| if (reg & CCM_ANALOG_PLL_ENET_ENABLE_CLK_40MHZ_MASK) |
| return freq / 25; |
| break; |
| case PLL_ENET_MAIN_25M_CLK: |
| if (reg & CCM_ANALOG_PLL_ENET_ENABLE_CLK_25MHZ_MASK) |
| return freq / 40; |
| break; |
| default: |
| printf("Error derived pll_enet clock %d\n", derive); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static u32 mxc_get_pll_ddr_derive(int derive) |
| { |
| u32 freq, reg; |
| |
| freq = decode_pll(PLL_DDR, MXC_HCLK); |
| reg = readl(&ccm_anatop->pll_ddr); |
| |
| switch (derive) { |
| case PLL_DRAM_MAIN_1066M_CLK: |
| return freq; |
| case PLL_DRAM_MAIN_533M_CLK: |
| if (reg & CCM_ANALOG_PLL_DDR_DIV2_ENABLE_CLK_MASK) |
| return freq / 2; |
| break; |
| default: |
| printf("Error derived pll_ddr clock %d\n", derive); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static u32 mxc_get_pll_derive(enum pll_clocks pll, int derive) |
| { |
| switch (pll) { |
| case PLL_SYS: |
| return mxc_get_pll_sys_derive(derive); |
| case PLL_ENET: |
| return mxc_get_pll_enet_derive(derive); |
| case PLL_DDR: |
| return mxc_get_pll_ddr_derive(derive); |
| default: |
| printf("Error pll.\n"); |
| return 0; |
| } |
| } |
| |
| static u32 get_root_src_clk(enum clk_root_src root_src) |
| { |
| switch (root_src) { |
| case OSC_24M_CLK: |
| return 24000000u; |
| case PLL_ARM_MAIN_800M_CLK: |
| return decode_pll(PLL_CORE, MXC_HCLK); |
| |
| case PLL_SYS_MAIN_480M_CLK: |
| case PLL_SYS_MAIN_240M_CLK: |
| case PLL_SYS_MAIN_120M_CLK: |
| case PLL_SYS_PFD0_392M_CLK: |
| case PLL_SYS_PFD0_196M_CLK: |
| case PLL_SYS_PFD1_332M_CLK: |
| case PLL_SYS_PFD1_166M_CLK: |
| case PLL_SYS_PFD2_270M_CLK: |
| case PLL_SYS_PFD2_135M_CLK: |
| case PLL_SYS_PFD3_CLK: |
| case PLL_SYS_PFD4_CLK: |
| case PLL_SYS_PFD5_CLK: |
| case PLL_SYS_PFD6_CLK: |
| case PLL_SYS_PFD7_CLK: |
| return mxc_get_pll_derive(PLL_SYS, root_src); |
| |
| case PLL_ENET_MAIN_500M_CLK: |
| case PLL_ENET_MAIN_250M_CLK: |
| case PLL_ENET_MAIN_125M_CLK: |
| case PLL_ENET_MAIN_100M_CLK: |
| case PLL_ENET_MAIN_50M_CLK: |
| case PLL_ENET_MAIN_40M_CLK: |
| case PLL_ENET_MAIN_25M_CLK: |
| return mxc_get_pll_derive(PLL_ENET, root_src); |
| |
| case PLL_DRAM_MAIN_1066M_CLK: |
| case PLL_DRAM_MAIN_533M_CLK: |
| return mxc_get_pll_derive(PLL_DDR, root_src); |
| |
| case PLL_AUDIO_MAIN_CLK: |
| return decode_pll(PLL_AUDIO, MXC_HCLK); |
| case PLL_VIDEO_MAIN_CLK: |
| return decode_pll(PLL_VIDEO, MXC_HCLK); |
| |
| case PLL_USB_MAIN_480M_CLK: |
| return decode_pll(PLL_USB, MXC_HCLK); |
| |
| case REF_1M_CLK: |
| return 1000000; |
| case OSC_32K_CLK: |
| return MXC_CLK32; |
| |
| case EXT_CLK_1: |
| case EXT_CLK_2: |
| case EXT_CLK_3: |
| case EXT_CLK_4: |
| printf("No EXT CLK supported??\n"); |
| break; |
| }; |
| |
| return 0; |
| } |
| |
| u32 get_root_clk(enum clk_root_index clock_id) |
| { |
| enum clk_root_src root_src; |
| u32 post_podf, pre_podf, auto_podf, root_src_clk; |
| int auto_en; |
| |
| 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_autopostdiv(clock_id, &auto_podf, &auto_en) < 0) |
| return 0; |
| |
| if (auto_en == 0) |
| auto_podf = 0; |
| |
| if (clock_get_src(clock_id, &root_src) < 0) |
| return 0; |
| |
| root_src_clk = get_root_src_clk(root_src); |
| |
| /* |
| * bypass clk is ignored. |
| */ |
| |
| return root_src_clk / (post_podf + 1) / (pre_podf + 1) / |
| (auto_podf + 1); |
| } |
| |
| static u32 get_ddrc_clk(void) |
| { |
| u32 reg, freq; |
| enum root_post_div post_div; |
| |
| reg = readl(&ccm_reg->root[DRAM_CLK_ROOT].target_root); |
| if (reg & CLK_ROOT_MUX_MASK) |
| /* DRAM_ALT_CLK_ROOT */ |
| freq = get_root_clk(DRAM_ALT_CLK_ROOT); |
| else |
| /* PLL_DRAM_MAIN_1066M_CLK */ |
| freq = mxc_get_pll_derive(PLL_DDR, PLL_DRAM_MAIN_1066M_CLK); |
| |
| post_div = reg & DRAM_CLK_ROOT_POST_DIV_MASK; |
| |
| return freq / (post_div + 1) / 2; |
| } |
| |
| unsigned int mxc_get_clock(enum mxc_clock clk) |
| { |
| switch (clk) { |
| case MXC_ARM_CLK: |
| return get_root_clk(ARM_A7_CLK_ROOT); |
| case MXC_AXI_CLK: |
| return get_root_clk(MAIN_AXI_CLK_ROOT); |
| case MXC_AHB_CLK: |
| return get_root_clk(AHB_CLK_ROOT); |
| case MXC_IPG_CLK: |
| return get_ipg_clk(); |
| case MXC_I2C_CLK: |
| return get_root_clk(I2C1_CLK_ROOT); |
| case MXC_UART_CLK: |
| return get_root_clk(UART1_CLK_ROOT); |
| case MXC_CSPI_CLK: |
| return get_root_clk(ECSPI1_CLK_ROOT); |
| case MXC_DDR_CLK: |
| return get_ddrc_clk(); |
| case MXC_ESDHC_CLK: |
| return get_root_clk(USDHC1_CLK_ROOT); |
| case MXC_ESDHC2_CLK: |
| return get_root_clk(USDHC2_CLK_ROOT); |
| case MXC_ESDHC3_CLK: |
| return get_root_clk(USDHC3_CLK_ROOT); |
| default: |
| printf("Unsupported mxc_clock %d\n", clk); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_SYS_I2C_MXC |
| /* i2c_num can be 0 - 3 */ |
| int enable_i2c_clk(bool enable, unsigned int i2c_num) |
| { |
| u32 target; |
| |
| if (i2c_num >= 4) |
| return -EINVAL; |
| |
| if (enable) { |
| clock_enable(CCGR_I2C1 + i2c_num, 0); |
| |
| /* Set i2c root clock to PLL_SYS_MAIN_120M_CLK */ |
| |
| target = CLK_ROOT_ON | I2C1_CLK_ROOT_FROM_PLL_SYS_MAIN_120M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2); |
| clock_set_target_val(I2C1_CLK_ROOT + i2c_num, target); |
| |
| clock_enable(CCGR_I2C1 + i2c_num, 1); |
| } else { |
| clock_enable(CCGR_I2C1 + i2c_num, 0); |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| static void init_clk_esdhc(void) |
| { |
| u32 target; |
| |
| /* disable the clock gate first */ |
| clock_enable(CCGR_USDHC1, 0); |
| clock_enable(CCGR_USDHC2, 0); |
| clock_enable(CCGR_USDHC3, 0); |
| |
| /* 196: 392/2 */ |
| target = CLK_ROOT_ON | USDHC1_CLK_ROOT_FROM_PLL_SYS_PFD0_392M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2); |
| clock_set_target_val(USDHC1_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | USDHC1_CLK_ROOT_FROM_PLL_SYS_PFD0_392M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2); |
| clock_set_target_val(USDHC2_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | USDHC1_CLK_ROOT_FROM_PLL_SYS_PFD0_392M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2); |
| clock_set_target_val(USDHC3_CLK_ROOT, target); |
| |
| /* enable the clock gate */ |
| clock_enable(CCGR_USDHC1, 1); |
| clock_enable(CCGR_USDHC2, 1); |
| clock_enable(CCGR_USDHC3, 1); |
| |
| } |
| |
| static void init_clk_uart(void) |
| { |
| u32 target; |
| |
| /* disable the clock gate first */ |
| clock_enable(CCGR_UART1, 0); |
| clock_enable(CCGR_UART2, 0); |
| clock_enable(CCGR_UART3, 0); |
| clock_enable(CCGR_UART4, 0); |
| clock_enable(CCGR_UART5, 0); |
| clock_enable(CCGR_UART6, 0); |
| clock_enable(CCGR_UART7, 0); |
| |
| /* 24Mhz */ |
| target = CLK_ROOT_ON | UART1_CLK_ROOT_FROM_OSC_24M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(UART1_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | UART2_CLK_ROOT_FROM_OSC_24M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(UART2_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | UART3_CLK_ROOT_FROM_OSC_24M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(UART3_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | UART4_CLK_ROOT_FROM_OSC_24M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(UART4_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | UART5_CLK_ROOT_FROM_OSC_24M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(UART5_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | UART6_CLK_ROOT_FROM_OSC_24M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(UART6_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | UART7_CLK_ROOT_FROM_OSC_24M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(UART7_CLK_ROOT, target); |
| |
| /* enable the clock gate */ |
| clock_enable(CCGR_UART1, 1); |
| clock_enable(CCGR_UART2, 1); |
| clock_enable(CCGR_UART3, 1); |
| clock_enable(CCGR_UART4, 1); |
| clock_enable(CCGR_UART5, 1); |
| clock_enable(CCGR_UART6, 1); |
| clock_enable(CCGR_UART7, 1); |
| |
| } |
| |
| static void init_clk_weim(void) |
| { |
| u32 target; |
| |
| /* disable the clock gate first */ |
| clock_enable(CCGR_WEIM, 0); |
| |
| /* 120Mhz */ |
| target = CLK_ROOT_ON | EIM_CLK_ROOT_FROM_PLL_SYS_MAIN_120M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(EIM_CLK_ROOT, target); |
| |
| /* enable the clock gate */ |
| clock_enable(CCGR_WEIM, 1); |
| } |
| |
| static void init_clk_ecspi(void) |
| { |
| u32 target; |
| |
| /* disable the clock gate first */ |
| clock_enable(CCGR_ECSPI1, 0); |
| clock_enable(CCGR_ECSPI2, 0); |
| clock_enable(CCGR_ECSPI3, 0); |
| clock_enable(CCGR_ECSPI4, 0); |
| |
| /* 60Mhz: 240/4 */ |
| target = CLK_ROOT_ON | ECSPI1_CLK_ROOT_FROM_PLL_SYS_MAIN_240M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV4); |
| clock_set_target_val(ECSPI1_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | ECSPI2_CLK_ROOT_FROM_PLL_SYS_MAIN_240M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV4); |
| clock_set_target_val(ECSPI2_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | ECSPI3_CLK_ROOT_FROM_PLL_SYS_MAIN_240M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV4); |
| clock_set_target_val(ECSPI3_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | ECSPI4_CLK_ROOT_FROM_PLL_SYS_MAIN_240M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV4); |
| clock_set_target_val(ECSPI4_CLK_ROOT, target); |
| |
| /* enable the clock gate */ |
| clock_enable(CCGR_ECSPI1, 1); |
| clock_enable(CCGR_ECSPI2, 1); |
| clock_enable(CCGR_ECSPI3, 1); |
| clock_enable(CCGR_ECSPI4, 1); |
| } |
| |
| static void init_clk_wdog(void) |
| { |
| u32 target; |
| |
| /* disable the clock gate first */ |
| clock_enable(CCGR_WDOG1, 0); |
| clock_enable(CCGR_WDOG2, 0); |
| clock_enable(CCGR_WDOG3, 0); |
| clock_enable(CCGR_WDOG4, 0); |
| |
| /* 24Mhz */ |
| target = CLK_ROOT_ON | WDOG_CLK_ROOT_FROM_OSC_24M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(WDOG_CLK_ROOT, target); |
| |
| /* enable the clock gate */ |
| clock_enable(CCGR_WDOG1, 1); |
| clock_enable(CCGR_WDOG2, 1); |
| clock_enable(CCGR_WDOG3, 1); |
| clock_enable(CCGR_WDOG4, 1); |
| |
| } |
| |
| #ifdef CONFIG_MXC_EPDC |
| static void init_clk_epdc(void) |
| { |
| u32 target; |
| |
| /* disable the clock gate first */ |
| clock_enable(CCGR_EPDC, 0); |
| |
| /* 24Mhz */ |
| target = CLK_ROOT_ON | EPDC_PIXEL_CLK_ROOT_FROM_PLL_SYS_MAIN_480M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV12); |
| clock_set_target_val(EPDC_PIXEL_CLK_ROOT, target); |
| |
| /* enable the clock gate */ |
| clock_enable(CCGR_EPDC, 1); |
| } |
| #endif |
| |
| static int enable_pll_enet(void) |
| { |
| u32 reg; |
| s32 timeout = 100000; |
| |
| reg = readl(&ccm_anatop->pll_enet); |
| /* If pll_enet powered up, no need to set it again */ |
| if (reg & ANADIG_PLL_ENET_PWDN_MASK) { |
| reg &= ~ANADIG_PLL_ENET_PWDN_MASK; |
| writel(reg, &ccm_anatop->pll_enet); |
| |
| while (timeout--) { |
| if (readl(&ccm_anatop->pll_enet) & ANADIG_PLL_LOCK) |
| break; |
| } |
| |
| if (timeout <= 0) { |
| /* If timeout, we set pwdn for pll_enet. */ |
| reg |= ANADIG_PLL_ENET_PWDN_MASK; |
| return -ETIME; |
| } |
| } |
| |
| /* Clear bypass */ |
| writel(CCM_ANALOG_PLL_ENET_BYPASS_MASK, &ccm_anatop->pll_enet_clr); |
| |
| writel((CCM_ANALOG_PLL_ENET_ENABLE_CLK_500MHZ_MASK |
| | CCM_ANALOG_PLL_ENET_ENABLE_CLK_250MHZ_MASK |
| | CCM_ANALOG_PLL_ENET_ENABLE_CLK_125MHZ_MASK |
| | CCM_ANALOG_PLL_ENET_ENABLE_CLK_100MHZ_MASK |
| | CCM_ANALOG_PLL_ENET_ENABLE_CLK_50MHZ_MASK |
| | CCM_ANALOG_PLL_ENET_ENABLE_CLK_40MHZ_MASK |
| | CCM_ANALOG_PLL_ENET_ENABLE_CLK_25MHZ_MASK), |
| &ccm_anatop->pll_enet_set); |
| |
| return 0; |
| } |
| static int enable_pll_video(u32 pll_div, u32 pll_num, u32 pll_denom, |
| u32 post_div) |
| { |
| u32 reg = 0; |
| ulong start; |
| |
| debug("pll5 div = %d, num = %d, denom = %d\n", |
| pll_div, pll_num, pll_denom); |
| |
| /* Power up PLL5 video and disable its output */ |
| writel(CCM_ANALOG_PLL_VIDEO_CLR_ENABLE_CLK_MASK | |
| CCM_ANALOG_PLL_VIDEO_CLR_POWERDOWN_MASK | |
| CCM_ANALOG_PLL_VIDEO_CLR_BYPASS_MASK | |
| CCM_ANALOG_PLL_VIDEO_CLR_DIV_SELECT_MASK | |
| CCM_ANALOG_PLL_VIDEO_CLR_POST_DIV_SEL_MASK | |
| CCM_ANALOG_PLL_VIDEO_CLR_TEST_DIV_SELECT_MASK, |
| &ccm_anatop->pll_video_clr); |
| |
| /* Set div, num and denom */ |
| switch (post_div) { |
| case 1: |
| writel(CCM_ANALOG_PLL_VIDEO_SET_DIV_SELECT(pll_div) | |
| CCM_ANALOG_PLL_VIDEO_SET_TEST_DIV_SELECT(0x1) | |
| CCM_ANALOG_PLL_VIDEO_SET_POST_DIV_SEL(0x0), |
| &ccm_anatop->pll_video_set); |
| break; |
| case 2: |
| writel(CCM_ANALOG_PLL_VIDEO_SET_DIV_SELECT(pll_div) | |
| CCM_ANALOG_PLL_VIDEO_SET_TEST_DIV_SELECT(0x0) | |
| CCM_ANALOG_PLL_VIDEO_SET_POST_DIV_SEL(0x0), |
| &ccm_anatop->pll_video_set); |
| break; |
| case 3: |
| writel(CCM_ANALOG_PLL_VIDEO_SET_DIV_SELECT(pll_div) | |
| CCM_ANALOG_PLL_VIDEO_SET_TEST_DIV_SELECT(0x0) | |
| CCM_ANALOG_PLL_VIDEO_SET_POST_DIV_SEL(0x1), |
| &ccm_anatop->pll_video_set); |
| break; |
| case 4: |
| writel(CCM_ANALOG_PLL_VIDEO_SET_DIV_SELECT(pll_div) | |
| CCM_ANALOG_PLL_VIDEO_SET_TEST_DIV_SELECT(0x0) | |
| CCM_ANALOG_PLL_VIDEO_SET_POST_DIV_SEL(0x3), |
| &ccm_anatop->pll_video_set); |
| break; |
| case 0: |
| default: |
| writel(CCM_ANALOG_PLL_VIDEO_SET_DIV_SELECT(pll_div) | |
| CCM_ANALOG_PLL_VIDEO_SET_TEST_DIV_SELECT(0x2) | |
| CCM_ANALOG_PLL_VIDEO_SET_POST_DIV_SEL(0x0), |
| &ccm_anatop->pll_video_set); |
| break; |
| } |
| |
| writel(CCM_ANALOG_PLL_VIDEO_NUM_A(pll_num), |
| &ccm_anatop->pll_video_num); |
| |
| writel(CCM_ANALOG_PLL_VIDEO_DENOM_B(pll_denom), |
| &ccm_anatop->pll_video_denom); |
| |
| /* Wait PLL5 lock */ |
| start = get_timer(0); /* Get current timestamp */ |
| |
| do { |
| reg = readl(&ccm_anatop->pll_video); |
| if (reg & CCM_ANALOG_PLL_VIDEO_LOCK_MASK) { |
| /* Enable PLL out */ |
| writel(CCM_ANALOG_PLL_VIDEO_CLR_ENABLE_CLK_MASK, |
| &ccm_anatop->pll_video_set); |
| return 0; |
| } |
| } while (get_timer(0) < (start + 10)); /* Wait 10ms */ |
| |
| printf("Lock PLL5 timeout\n"); |
| |
| return 1; |
| |
| } |
| |
| int set_clk_qspi(void) |
| { |
| u32 target; |
| |
| /* disable the clock gate first */ |
| clock_enable(CCGR_QSPI, 0); |
| |
| /* 49M: 392/2/4 */ |
| target = CLK_ROOT_ON | QSPI_CLK_ROOT_FROM_PLL_SYS_PFD4_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2); |
| clock_set_target_val(QSPI_CLK_ROOT, target); |
| |
| /* enable the clock gate */ |
| clock_enable(CCGR_QSPI, 1); |
| |
| return 0; |
| } |
| |
| int set_clk_nand(void) |
| { |
| u32 target; |
| |
| /* disable the clock gate first */ |
| clock_enable(CCGR_RAWNAND, 0); |
| |
| enable_pll_enet(); |
| /* 100: 500/5 */ |
| target = CLK_ROOT_ON | NAND_CLK_ROOT_FROM_PLL_ENET_MAIN_500M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV5); |
| clock_set_target_val(NAND_CLK_ROOT, target); |
| |
| /* enable the clock gate */ |
| clock_enable(CCGR_RAWNAND, 1); |
| |
| return 0; |
| } |
| |
| void mxs_set_lcdclk(uint32_t base_addr, uint32_t freq) |
| { |
| u32 hck = MXC_HCLK/1000; |
| u32 min = hck * 27; |
| u32 max = hck * 54; |
| u32 temp, best = 0; |
| u32 i, j, pred = 1, postd = 1; |
| u32 pll_div, pll_num, pll_denom, post_div = 0; |
| u32 target; |
| |
| debug("mxs_set_lcdclk, freq = %d\n", freq); |
| |
| clock_enable(CCGR_LCDIF, 0); |
| |
| temp = (freq * 8 * 8); |
| if (temp < min) { |
| |
| for (i = 1; i <= 4; i++) { |
| if ((temp * (1 << i)) > min) { |
| post_div = i; |
| freq = (freq * (1 << i)); |
| break; |
| } |
| } |
| |
| if (5 == i) { |
| printf("Fail to set rate to %dkhz", freq); |
| return; |
| } |
| } |
| |
| for (i = 1; i <= 8; i++) { |
| for (j = 1; j <= 8; j++) { |
| temp = freq * i * j; |
| if (temp > max || temp < min) |
| continue; |
| |
| if (best == 0 || temp < best) { |
| best = temp; |
| pred = i; |
| postd = j; |
| } |
| } |
| } |
| |
| if (best == 0) { |
| printf("Fail to set rate to %dkhz", freq); |
| return; |
| } |
| |
| debug("best %d, pred = %d, postd = %d\n", best, pred, postd); |
| |
| pll_div = best / hck; |
| pll_denom = 1000000; |
| pll_num = (best - hck * pll_div) * pll_denom / hck; |
| |
| if (enable_pll_video(pll_div, pll_num, pll_denom, post_div)) |
| return; |
| |
| target = CLK_ROOT_ON | LCDIF_PIXEL_CLK_ROOT_FROM_PLL_VIDEO_MAIN_CLK | |
| CLK_ROOT_PRE_DIV((pred - 1)) | CLK_ROOT_POST_DIV((postd - 1)); |
| clock_set_target_val(LCDIF_PIXEL_CLK_ROOT, target); |
| |
| clock_enable(CCGR_LCDIF, 1); |
| } |
| |
| #ifdef CONFIG_FEC_MXC |
| int set_clk_enet(enum enet_freq type) |
| { |
| u32 target; |
| int ret; |
| u32 enet1_ref, enet2_ref; |
| |
| /* disable the clock first */ |
| clock_enable(CCGR_ENET1, 0); |
| clock_enable(CCGR_ENET2, 0); |
| |
| switch (type) { |
| case ENET_125MHz: |
| enet1_ref = ENET1_REF_CLK_ROOT_FROM_PLL_ENET_MAIN_125M_CLK; |
| enet2_ref = ENET2_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; |
| enet2_ref = ENET2_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; |
| enet2_ref = ENET2_REF_CLK_ROOT_FROM_PLL_ENET_MAIN_25M_CLK; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| ret = enable_pll_enet(); |
| if (ret != 0) |
| return ret; |
| |
| /* set enet axi clock 196M: 392/2 */ |
| target = CLK_ROOT_ON | ENET_AXI_CLK_ROOT_FROM_PLL_SYS_PFD4_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2); |
| 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(ENET1_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(ENET1_TIME_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | enet2_ref | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(ENET2_REF_CLK_ROOT, target); |
| |
| target = CLK_ROOT_ON | ENET2_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(ENET2_TIME_CLK_ROOT, target); |
| |
| #ifdef CONFIG_FEC_MXC_25M_REF_CLK |
| target = CLK_ROOT_ON | ENET_PHY_REF_CLK_ROOT_FROM_PLL_ENET_MAIN_25M_CLK | |
| CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | |
| CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); |
| clock_set_target_val(ENET_PHY_REF_CLK_ROOT, target); |
| #endif |
| /* enable clock */ |
| clock_enable(CCGR_ENET1, 1); |
| clock_enable(CCGR_ENET2, 1); |
| |
| return 0; |
| } |
| #endif |
| |
| /* Configure PLL/PFD freq */ |
| void clock_init(void) |
| { |
| /* Rom has enabled PLL_ARM, PLL_DDR, PLL_SYS, PLL_ENET |
| * In u-boot, we have to: |
| * 1. Configure PFD3- PFD7 for freq we needed in u-boot |
| * 2. Set clock root for peripherals (ip channel) used in u-boot but without set rate |
| * interface. The clocks for these peripherals are enabled after this intialization. |
| * 3. Other peripherals with set clock rate interface does not be set in this function. |
| */ |
| |
| u32 reg; |
| |
| /* |
| * Configure PFD4 to 392M |
| * 480M * 18 / 0x16 = 392M |
| */ |
| reg = readl(&ccm_anatop->pfd_480b); |
| |
| reg &= ~(ANATOP_PFD480B_PFD4_FRAC_MASK | |
| CCM_ANALOG_PFD_480B_PFD4_DIV1_CLKGATE_MASK); |
| reg |= ANATOP_PFD480B_PFD4_FRAC_392M_VAL; |
| |
| writel(reg, &ccm_anatop->pfd_480b); |
| |
| init_clk_esdhc(); |
| init_clk_uart(); |
| init_clk_weim(); |
| init_clk_ecspi(); |
| init_clk_wdog(); |
| #ifdef CONFIG_MXC_EPDC |
| init_clk_epdc(); |
| #endif |
| |
| enable_usboh3_clk(1); |
| |
| clock_enable(CCGR_SNVS, 1); |
| |
| #ifdef CONFIG_NAND_MXS |
| clock_enable(CCGR_RAWNAND, 1); |
| #endif |
| } |
| |
| #ifdef CONFIG_SECURE_BOOT |
| void hab_caam_clock_enable(unsigned char enable) |
| { |
| if (enable) |
| clock_enable(CCGR_CAAM, 1); |
| else |
| clock_enable(CCGR_CAAM, 0); |
| } |
| #endif |
| |
| #ifdef CONFIG_MXC_EPDC |
| void epdc_clock_enable(void) |
| { |
| clock_enable(CCGR_EPDC, 1); |
| } |
| void epdc_clock_disable(void) |
| { |
| clock_enable(CCGR_EPDC, 0); |
| } |
| #endif |
| |
| /* |
| * Dump some core clockes. |
| */ |
| int do_mx7_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| u32 freq; |
| freq = decode_pll(PLL_CORE, MXC_HCLK); |
| printf("PLL_CORE %8d MHz\n", freq / 1000000); |
| freq = decode_pll(PLL_SYS, MXC_HCLK); |
| printf("PLL_SYS %8d MHz\n", freq / 1000000); |
| freq = decode_pll(PLL_ENET, MXC_HCLK); |
| printf("PLL_NET %8d MHz\n", freq / 1000000); |
| |
| printf("\n"); |
| |
| printf("IPG %8d kHz\n", mxc_get_clock(MXC_IPG_CLK) / 1000); |
| printf("UART %8d kHz\n", mxc_get_clock(MXC_UART_CLK) / 1000); |
| #ifdef CONFIG_MXC_SPI |
| printf("CSPI %8d kHz\n", mxc_get_clock(MXC_CSPI_CLK) / 1000); |
| #endif |
| printf("AHB %8d kHz\n", mxc_get_clock(MXC_AHB_CLK) / 1000); |
| printf("AXI %8d kHz\n", mxc_get_clock(MXC_AXI_CLK) / 1000); |
| printf("DDR %8d kHz\n", mxc_get_clock(MXC_DDR_CLK) / 1000); |
| printf("USDHC1 %8d kHz\n", mxc_get_clock(MXC_ESDHC_CLK) / 1000); |
| printf("USDHC2 %8d kHz\n", mxc_get_clock(MXC_ESDHC2_CLK) / 1000); |
| printf("USDHC3 %8d kHz\n", mxc_get_clock(MXC_ESDHC3_CLK) / 1000); |
| |
| return 0; |
| } |
| |
| U_BOOT_CMD( |
| clocks, CONFIG_SYS_MAXARGS, 1, do_mx7_showclocks, |
| "display clocks", |
| "" |
| ); |
