board/technexion/pico-imx6/spl.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2015 Technexion Ltd.
  *
  * Author: Richard Hu <richard.hu@technexion.com>
  *	   Fabio Estevam <festevam@gmail.com>
  */

 #include <image.h>
 #include <init.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/mx6-pins.h>
 #include <linux/delay.h>
 #include <linux/errno.h>
 #include <asm/gpio.h>
 #include <asm/mach-imx/iomux-v3.h>
 #include <asm/mach-imx/video.h>
 #include <mmc.h>
 #include <fsl_esdhc_imx.h>
 #include <asm/arch/crm_regs.h>
 #include <asm/io.h>
 #include <asm/arch/sys_proto.h>
 #include <spl.h>

 #if defined(CONFIG_XPL_BUILD)
 #include <asm/arch/mx6-ddr.h>

 #define IMX6DQ_DRIVE_STRENGTH		0x30
 #define IMX6SDL_DRIVE_STRENGTH		0x28

 #ifdef CONFIG_SPL_OS_BOOT
 int spl_start_uboot(void)
 {
 	/* Break into full U-Boot on 'c' */
 	if (serial_tstc() && serial_getc() == 'c')
 		return 1;

 	return 0;
 }
 #endif

 /* configure MX6Q/DUAL mmdc DDR io registers */
 static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
 	.dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdclk_1 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_cas = IMX6DQ_DRIVE_STRENGTH,
 	.dram_ras = IMX6DQ_DRIVE_STRENGTH,
 	.dram_reset = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdcke0 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdcke1 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdba2 = 0x00000000,
 	.dram_sdodt0 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdodt1 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdqs0 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdqs1 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdqs2 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdqs3 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdqs4 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdqs5 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdqs6 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_sdqs7 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_dqm0 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_dqm1 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_dqm2 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_dqm3 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_dqm4 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_dqm5 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_dqm6 = IMX6DQ_DRIVE_STRENGTH,
 	.dram_dqm7 = IMX6DQ_DRIVE_STRENGTH,
 };

 /* configure MX6Q/DUAL mmdc GRP io registers */
 static struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
 	.grp_ddr_type = 0x000c0000,
 	.grp_ddrmode_ctl = 0x00020000,
 	.grp_ddrpke = 0x00000000,
 	.grp_addds = IMX6DQ_DRIVE_STRENGTH,
 	.grp_ctlds = IMX6DQ_DRIVE_STRENGTH,
 	.grp_ddrmode = 0x00020000,
 	.grp_b0ds = IMX6DQ_DRIVE_STRENGTH,
 	.grp_b1ds = IMX6DQ_DRIVE_STRENGTH,
 	.grp_b2ds = IMX6DQ_DRIVE_STRENGTH,
 	.grp_b3ds = IMX6DQ_DRIVE_STRENGTH,
 	.grp_b4ds = IMX6DQ_DRIVE_STRENGTH,
 	.grp_b5ds = IMX6DQ_DRIVE_STRENGTH,
 	.grp_b6ds = IMX6DQ_DRIVE_STRENGTH,
 	.grp_b7ds = IMX6DQ_DRIVE_STRENGTH,
 };

 /* configure MX6SOLO/DUALLITE mmdc DDR io registers */
 struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
 	.dram_sdclk_0 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdclk_1 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_cas = IMX6SDL_DRIVE_STRENGTH,
 	.dram_ras = IMX6SDL_DRIVE_STRENGTH,
 	.dram_reset = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdcke0 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdcke1 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdba2 = 0x00000000,
 	.dram_sdodt0 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdodt1 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdqs0 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdqs1 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdqs2 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdqs3 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdqs4 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdqs5 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdqs6 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_sdqs7 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_dqm0 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_dqm1 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_dqm2 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_dqm3 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_dqm4 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_dqm5 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_dqm6 = IMX6SDL_DRIVE_STRENGTH,
 	.dram_dqm7 = IMX6SDL_DRIVE_STRENGTH,
 };

 /* configure MX6SOLO/DUALLITE mmdc GRP io registers */
 struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
 	.grp_ddr_type = 0x000c0000,
 	.grp_ddrmode_ctl = 0x00020000,
 	.grp_ddrpke = 0x00000000,
 	.grp_addds = IMX6SDL_DRIVE_STRENGTH,
 	.grp_ctlds = IMX6SDL_DRIVE_STRENGTH,
 	.grp_ddrmode = 0x00020000,
 	.grp_b0ds = IMX6SDL_DRIVE_STRENGTH,
 	.grp_b1ds = IMX6SDL_DRIVE_STRENGTH,
 	.grp_b2ds = IMX6SDL_DRIVE_STRENGTH,
 	.grp_b3ds = IMX6SDL_DRIVE_STRENGTH,
 	.grp_b4ds = IMX6SDL_DRIVE_STRENGTH,
 	.grp_b5ds = IMX6SDL_DRIVE_STRENGTH,
 	.grp_b6ds = IMX6SDL_DRIVE_STRENGTH,
 	.grp_b7ds = IMX6SDL_DRIVE_STRENGTH,
 };

 /* H5T04G63AFR-PB for i.mx6Solo/DL operating DDR at 400MHz */
 static struct mx6_ddr3_cfg h5t04g63afr = {
 	.mem_speed = 800,
 	.density = 4,
 	.width = 16,
 	.banks = 8,
 	.rowaddr = 15,
 	.coladdr = 10,
 	.pagesz = 2,
 	.trcd = 1500,
 	.trcmin = 5250,
 	.trasmin = 3750,
 };

 /* H5TQ2G63FFR-H9 for i.mx6Solo/DL operating DDR at 400MHz */
 static struct mx6_ddr3_cfg h5tq2g63ffr = {
 	.mem_speed = 800,
 	.density = 2,
 	.width = 16,
 	.banks = 8,
 	.rowaddr = 14,
 	.coladdr = 10,
 	.pagesz = 2,
 	.trcd = 1500,
 	.trcmin = 5250,
 	.trasmin = 3750,
 };

 static struct mx6_mmdc_calibration mx6q_1g_mmdc_calib = {
 	.p0_mpwldectrl0 = 0x00000000,
 	.p0_mpwldectrl1 = 0x00000000,
 	.p1_mpwldectrl0 = 0x00000000,
 	.p1_mpwldectrl1 = 0x00000000,
 	.p0_mpdgctrl0 = 0x032C0340,
 	.p0_mpdgctrl1 = 0x03300324,
 	.p1_mpdgctrl0 = 0x032C0338,
 	.p1_mpdgctrl1 = 0x03300274,
 	.p0_mprddlctl = 0x423A383E,
 	.p1_mprddlctl = 0x3638323E,
 	.p0_mpwrdlctl = 0x363C4640,
 	.p1_mpwrdlctl = 0x4034423C,
 };

 /* DDR 32bit */
 static struct mx6_ddr_sysinfo mem_s = {
 	.dsize		= 1,
 	.cs1_mirror	= 0,
 	/* config for full 4GB range so that get_mem_size() works */
 	.cs_density	= 32,
 	.ncs		= 1,
 	.bi_on		= 1,
 	.rtt_nom	= 1,
 	.rtt_wr		= 0,
 	.ralat		= 5,
 	.walat		= 0,
 	.mif3_mode	= 3,
 	.rst_to_cke	= 0x23,
 	.sde_to_rst	= 0x10,
 };

 static struct mx6_mmdc_calibration mx6dl_1g_mmdc_calib = {
 	.p0_mpwldectrl0 = 0x001f001f,
 	.p0_mpwldectrl1 = 0x001f001f,
 	.p1_mpwldectrl0 = 0x001f001f,
 	.p1_mpwldectrl1 = 0x001f001f,
 	.p0_mpdgctrl0 = 0x420e020e,
 	.p0_mpdgctrl1 = 0x02000200,
 	.p1_mpdgctrl0 = 0x42020202,
 	.p1_mpdgctrl1 = 0x01720172,
 	.p0_mprddlctl = 0x494c4f4c,
 	.p1_mprddlctl = 0x4a4c4c49,
 	.p0_mpwrdlctl = 0x3f3f3133,
 	.p1_mpwrdlctl = 0x39373f2e,
 };

 static struct mx6_mmdc_calibration mx6s_512m_mmdc_calib = {
 	.p0_mpwldectrl0 = 0x0040003c,
 	.p0_mpwldectrl1 = 0x0032003e,
 	.p0_mpdgctrl0 = 0x42350231,
 	.p0_mpdgctrl1 = 0x021a0218,
 	.p0_mprddlctl = 0x4b4b4e49,
 	.p0_mpwrdlctl = 0x3f3f3035,
 };

 static void ccgr_init(void)
 {
 	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;

 	writel(0x00C03F3F, &ccm->CCGR0);
 	writel(0x0030FC03, &ccm->CCGR1);
 	writel(0x0FFFC000, &ccm->CCGR2);
 	writel(0x3FF03000, &ccm->CCGR3);
 	writel(0x00FFF300, &ccm->CCGR4);
 	writel(0x0F0000C3, &ccm->CCGR5);
 	writel(0x000003FF, &ccm->CCGR6);
 }

 static void spl_dram_init(void)
 {
 	if (is_mx6solo()) {
 		mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
 		mx6_dram_cfg(&mem_s, &mx6s_512m_mmdc_calib, &h5tq2g63ffr);
 	} else if (is_mx6dl()) {
 		mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
 		mx6_dram_cfg(&mem_s, &mx6dl_1g_mmdc_calib, &h5t04g63afr);
 	} else if (is_mx6dq()) {
 		mx6dq_dram_iocfg(32, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs);
 		mx6_dram_cfg(&mem_s, &mx6q_1g_mmdc_calib, &h5t04g63afr);
 	}

 	udelay(100);
 }

 void board_init_f(ulong dummy)
 {
 	ccgr_init();

 	/* setup AIPS and disable watchdog */
 	arch_cpu_init();

 	gpr_init();

 	/* iomux */
 	board_early_init_f();

 	/* setup GP timer */
 	timer_init();

 	/* UART clocks enabled and gd valid - init serial console */
 	preloader_console_init();

 	/* DDR initialization */
 	spl_dram_init();
 }

 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
 	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)

 static struct fsl_esdhc_cfg usdhc_cfg[1] = {
 	{USDHC3_BASE_ADDR},
 };

 static iomux_v3_cfg_t const usdhc3_pads[] = {
 	IOMUX_PADS(PAD_SD3_CLK__SD3_CLK    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD3_CMD__SD3_CMD    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	/* SOM MicroSD Card Detect */
 	IOMUX_PADS(PAD_EIM_DA9__GPIO3_IO09  | MUX_PAD_CTRL(NO_PAD_CTRL)),
 };

 int board_mmc_getcd(struct mmc *mmc)
 {
 	return 1;
 }

 int board_mmc_init(struct bd_info *bis)
 {
 	SETUP_IOMUX_PADS(usdhc3_pads);
 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
 }
 #endif

 #ifdef CONFIG_SPL_LOAD_FIT
 int board_fit_config_name_match(const char *name)
 {
 	if (is_mx6dq() && !strcmp(name, "imx6q-pico"))
 		return 0;
 	else if ((is_mx6dl() || is_mx6solo()) && !strcmp(name, "imx6dl-pico"))
 		return 0;

 	return -EINVAL;
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright (C) 2015 Technexion Ltd.
	*
	* Author: Richard Hu <richard.hu@technexion.com>
	* Fabio Estevam <festevam@gmail.com>
	*/

	#include <image.h>
	#include <init.h>
	#include <asm/arch/clock.h>
	#include <asm/arch/imx-regs.h>
	#include <asm/arch/iomux.h>
	#include <asm/arch/mx6-pins.h>
	#include <linux/delay.h>
	#include <linux/errno.h>
	#include <asm/gpio.h>
	#include <asm/mach-imx/iomux-v3.h>
	#include <asm/mach-imx/video.h>
	#include <mmc.h>
	#include <fsl_esdhc_imx.h>
	#include <asm/arch/crm_regs.h>
	#include <asm/io.h>
	#include <asm/arch/sys_proto.h>
	#include <spl.h>

	#if defined(CONFIG_XPL_BUILD)
	#include <asm/arch/mx6-ddr.h>

	#define IMX6DQ_DRIVE_STRENGTH 0x30
	#define IMX6SDL_DRIVE_STRENGTH 0x28

	#ifdef CONFIG_SPL_OS_BOOT
	int spl_start_uboot(void)
	{
	/* Break into full U-Boot on 'c' */
	if (serial_tstc() && serial_getc() == 'c')
	return 1;

	return 0;
	}
	#endif

	/* configure MX6Q/DUAL mmdc DDR io registers */
	static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
	.dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdclk_1 = IMX6DQ_DRIVE_STRENGTH,
	.dram_cas = IMX6DQ_DRIVE_STRENGTH,
	.dram_ras = IMX6DQ_DRIVE_STRENGTH,
	.dram_reset = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdcke0 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdcke1 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdba2 = 0x00000000,
	.dram_sdodt0 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdodt1 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdqs0 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdqs1 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdqs2 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdqs3 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdqs4 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdqs5 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdqs6 = IMX6DQ_DRIVE_STRENGTH,
	.dram_sdqs7 = IMX6DQ_DRIVE_STRENGTH,
	.dram_dqm0 = IMX6DQ_DRIVE_STRENGTH,
	.dram_dqm1 = IMX6DQ_DRIVE_STRENGTH,
	.dram_dqm2 = IMX6DQ_DRIVE_STRENGTH,
	.dram_dqm3 = IMX6DQ_DRIVE_STRENGTH,
	.dram_dqm4 = IMX6DQ_DRIVE_STRENGTH,
	.dram_dqm5 = IMX6DQ_DRIVE_STRENGTH,
	.dram_dqm6 = IMX6DQ_DRIVE_STRENGTH,
	.dram_dqm7 = IMX6DQ_DRIVE_STRENGTH,
	};

	/* configure MX6Q/DUAL mmdc GRP io registers */
	static struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
	.grp_ddr_type = 0x000c0000,
	.grp_ddrmode_ctl = 0x00020000,
	.grp_ddrpke = 0x00000000,
	.grp_addds = IMX6DQ_DRIVE_STRENGTH,
	.grp_ctlds = IMX6DQ_DRIVE_STRENGTH,
	.grp_ddrmode = 0x00020000,
	.grp_b0ds = IMX6DQ_DRIVE_STRENGTH,
	.grp_b1ds = IMX6DQ_DRIVE_STRENGTH,
	.grp_b2ds = IMX6DQ_DRIVE_STRENGTH,
	.grp_b3ds = IMX6DQ_DRIVE_STRENGTH,
	.grp_b4ds = IMX6DQ_DRIVE_STRENGTH,
	.grp_b5ds = IMX6DQ_DRIVE_STRENGTH,
	.grp_b6ds = IMX6DQ_DRIVE_STRENGTH,
	.grp_b7ds = IMX6DQ_DRIVE_STRENGTH,
	};

	/* configure MX6SOLO/DUALLITE mmdc DDR io registers */
	struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
	.dram_sdclk_0 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdclk_1 = IMX6SDL_DRIVE_STRENGTH,
	.dram_cas = IMX6SDL_DRIVE_STRENGTH,
	.dram_ras = IMX6SDL_DRIVE_STRENGTH,
	.dram_reset = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdcke0 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdcke1 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdba2 = 0x00000000,
	.dram_sdodt0 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdodt1 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdqs0 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdqs1 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdqs2 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdqs3 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdqs4 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdqs5 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdqs6 = IMX6SDL_DRIVE_STRENGTH,
	.dram_sdqs7 = IMX6SDL_DRIVE_STRENGTH,
	.dram_dqm0 = IMX6SDL_DRIVE_STRENGTH,
	.dram_dqm1 = IMX6SDL_DRIVE_STRENGTH,
	.dram_dqm2 = IMX6SDL_DRIVE_STRENGTH,
	.dram_dqm3 = IMX6SDL_DRIVE_STRENGTH,
	.dram_dqm4 = IMX6SDL_DRIVE_STRENGTH,
	.dram_dqm5 = IMX6SDL_DRIVE_STRENGTH,
	.dram_dqm6 = IMX6SDL_DRIVE_STRENGTH,
	.dram_dqm7 = IMX6SDL_DRIVE_STRENGTH,
	};

	/* configure MX6SOLO/DUALLITE mmdc GRP io registers */
	struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
	.grp_ddr_type = 0x000c0000,
	.grp_ddrmode_ctl = 0x00020000,
	.grp_ddrpke = 0x00000000,
	.grp_addds = IMX6SDL_DRIVE_STRENGTH,
	.grp_ctlds = IMX6SDL_DRIVE_STRENGTH,
	.grp_ddrmode = 0x00020000,
	.grp_b0ds = IMX6SDL_DRIVE_STRENGTH,
	.grp_b1ds = IMX6SDL_DRIVE_STRENGTH,
	.grp_b2ds = IMX6SDL_DRIVE_STRENGTH,
	.grp_b3ds = IMX6SDL_DRIVE_STRENGTH,
	.grp_b4ds = IMX6SDL_DRIVE_STRENGTH,
	.grp_b5ds = IMX6SDL_DRIVE_STRENGTH,
	.grp_b6ds = IMX6SDL_DRIVE_STRENGTH,
	.grp_b7ds = IMX6SDL_DRIVE_STRENGTH,
	};

	/* H5T04G63AFR-PB for i.mx6Solo/DL operating DDR at 400MHz */
	static struct mx6_ddr3_cfg h5t04g63afr = {
	.mem_speed = 800,
	.density = 4,
	.width = 16,
	.banks = 8,
	.rowaddr = 15,
	.coladdr = 10,
	.pagesz = 2,
	.trcd = 1500,
	.trcmin = 5250,
	.trasmin = 3750,
	};

	/* H5TQ2G63FFR-H9 for i.mx6Solo/DL operating DDR at 400MHz */
	static struct mx6_ddr3_cfg h5tq2g63ffr = {
	.mem_speed = 800,
	.density = 2,
	.width = 16,
	.banks = 8,
	.rowaddr = 14,
	.coladdr = 10,
	.pagesz = 2,
	.trcd = 1500,
	.trcmin = 5250,
	.trasmin = 3750,
	};

	static struct mx6_mmdc_calibration mx6q_1g_mmdc_calib = {
	.p0_mpwldectrl0 = 0x00000000,
	.p0_mpwldectrl1 = 0x00000000,
	.p1_mpwldectrl0 = 0x00000000,
	.p1_mpwldectrl1 = 0x00000000,
	.p0_mpdgctrl0 = 0x032C0340,
	.p0_mpdgctrl1 = 0x03300324,
	.p1_mpdgctrl0 = 0x032C0338,
	.p1_mpdgctrl1 = 0x03300274,
	.p0_mprddlctl = 0x423A383E,
	.p1_mprddlctl = 0x3638323E,
	.p0_mpwrdlctl = 0x363C4640,
	.p1_mpwrdlctl = 0x4034423C,
	};

	/* DDR 32bit */
	static struct mx6_ddr_sysinfo mem_s = {
	.dsize = 1,
	.cs1_mirror = 0,
	/* config for full 4GB range so that get_mem_size() works */
	.cs_density = 32,
	.ncs = 1,
	.bi_on = 1,
	.rtt_nom = 1,
	.rtt_wr = 0,
	.ralat = 5,
	.walat = 0,
	.mif3_mode = 3,
	.rst_to_cke = 0x23,
	.sde_to_rst = 0x10,
	};

	static struct mx6_mmdc_calibration mx6dl_1g_mmdc_calib = {
	.p0_mpwldectrl0 = 0x001f001f,
	.p0_mpwldectrl1 = 0x001f001f,
	.p1_mpwldectrl0 = 0x001f001f,
	.p1_mpwldectrl1 = 0x001f001f,
	.p0_mpdgctrl0 = 0x420e020e,
	.p0_mpdgctrl1 = 0x02000200,
	.p1_mpdgctrl0 = 0x42020202,
	.p1_mpdgctrl1 = 0x01720172,
	.p0_mprddlctl = 0x494c4f4c,
	.p1_mprddlctl = 0x4a4c4c49,
	.p0_mpwrdlctl = 0x3f3f3133,
	.p1_mpwrdlctl = 0x39373f2e,
	};

	static struct mx6_mmdc_calibration mx6s_512m_mmdc_calib = {
	.p0_mpwldectrl0 = 0x0040003c,
	.p0_mpwldectrl1 = 0x0032003e,
	.p0_mpdgctrl0 = 0x42350231,
	.p0_mpdgctrl1 = 0x021a0218,
	.p0_mprddlctl = 0x4b4b4e49,
	.p0_mpwrdlctl = 0x3f3f3035,
	};

	static void ccgr_init(void)
	{
	struct mxc_ccm_reg ccm = (struct mxc_ccm_reg )CCM_BASE_ADDR;

	writel(0x00C03F3F, &ccm->CCGR0);
	writel(0x0030FC03, &ccm->CCGR1);
	writel(0x0FFFC000, &ccm->CCGR2);
	writel(0x3FF03000, &ccm->CCGR3);
	writel(0x00FFF300, &ccm->CCGR4);
	writel(0x0F0000C3, &ccm->CCGR5);
	writel(0x000003FF, &ccm->CCGR6);
	}

	static void spl_dram_init(void)
	{
	if (is_mx6solo()) {
	mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
	mx6_dram_cfg(&mem_s, &mx6s_512m_mmdc_calib, &h5tq2g63ffr);
	} else if (is_mx6dl()) {
	mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
	mx6_dram_cfg(&mem_s, &mx6dl_1g_mmdc_calib, &h5t04g63afr);
	} else if (is_mx6dq()) {
	mx6dq_dram_iocfg(32, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs);
	mx6_dram_cfg(&mem_s, &mx6q_1g_mmdc_calib, &h5t04g63afr);
	}

	udelay(100);
	}

	void board_init_f(ulong dummy)
	{
	ccgr_init();

	/* setup AIPS and disable watchdog */
	arch_cpu_init();

	gpr_init();

	/* iomux */
	board_early_init_f();

	/* setup GP timer */
	timer_init();

	/* UART clocks enabled and gd valid - init serial console */
	preloader_console_init();

	/* DDR initialization */
	spl_dram_init();
	}

	#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP \| \
	PAD_CTL_SPEED_LOW \| PAD_CTL_DSE_80ohm \| \
	PAD_CTL_SRE_FAST \| PAD_CTL_HYS)

	static struct fsl_esdhc_cfg usdhc_cfg[1] = {
	{USDHC3_BASE_ADDR},
	};

	static iomux_v3_cfg_t const usdhc3_pads[] = {
	IOMUX_PADS(PAD_SD3_CLK__SD3_CLK \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD3_CMD__SD3_CMD \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 \| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
	/* SOM MicroSD Card Detect */
	IOMUX_PADS(PAD_EIM_DA9__GPIO3_IO09 \| MUX_PAD_CTRL(NO_PAD_CTRL)),
	};

	int board_mmc_getcd(struct mmc *mmc)
	{
	return 1;
	}

	int board_mmc_init(struct bd_info *bis)
	{
	SETUP_IOMUX_PADS(usdhc3_pads);
	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
	}
	#endif

	#ifdef CONFIG_SPL_LOAD_FIT
	int board_fit_config_name_match(const char *name)
	{
	if (is_mx6dq() && !strcmp(name, "imx6q-pico"))
	return 0;
	else if ((is_mx6dl() \|\| is_mx6solo()) && !strcmp(name, "imx6dl-pico"))
	return 0;

	return -EINVAL;
	}
	#endif