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authorAlbert ARIBAUD <albert.u.boot@aribaud.net>2015-10-14 10:46:36 +0200
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2015-10-14 10:46:36 +0200
commit13a3972585af60ec367d209cedbd3601e0c77467 (patch)
tree4b3312669b3e501f6bc10b39d8c7bbf516f07aac /arch/arm/cpu/armv7/mx7/clock.c
parent208bd51396fb606dbdcf45b064e6b372d7dd3e81 (diff)
parent297faccca2235e359012118495b9b73451d54bb9 (diff)
Merge remote-tracking branch 'u-boot/master'
Diffstat (limited to 'arch/arm/cpu/armv7/mx7/clock.c')
-rw-r--r--arch/arm/cpu/armv7/mx7/clock.c1127
1 files changed, 1127 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx7/clock.c b/arch/arm/cpu/armv7/mx7/clock.c
new file mode 100644
index 0000000000..77db6e8306
--- /dev/null
+++ b/arch/arm/cpu/armv7/mx7/clock.c
@@ -0,0 +1,1127 @@
+/*
+ * Copyright (C) 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(unsigned char enable, unsigned 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",
+ ""
+);