imx: board: Add support for the K+P's kp_imx6q_tpc board

This commit provides support for Kieback & Peter GmbH IMX6Q based
TPC board.

U-boot console output:

U-Boot SPL 2018.05-rc1-00005-g631e2d01fd (Apr 04 2018 - 21:16:24 +0200)
Trying to boot from MMC1

U-Boot 2018.05-rc1-00005-g631e2d01fd (Apr 04 2018 - 21:16:24 +0200)

CPU:   Freescale i.MX6Q rev1.5 996 MHz (running at 792 MHz)
CPU:   Extended Commercial temperature grade (-20C to 105C) at 37C
Reset cause: POR
Board: K+P KP_IMX6Q_TPC i.MX6Q
       Watchdog enabled
I2C:   ready
DRAM:  2 GiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Net:   FEC [PRIME]
Autoboot in 3 seconds

5 files changed, 669 insertions, 0 deletions

diff --git a/board/k+p/kp_imx6q_tpc/Kconfig b/board/k+p/kp_imx6q_tpc/Kconfig
new file mode 100644
index 0000000000..62e34978ec
--- /dev/null
+++ b/board/k+p/kp_imx6q_tpc/Kconfig
@@ -0,0 +1,12 @@
+if TARGET_KP_IMX6Q_TPC
+
+config SYS_BOARD
+	default "kp_imx6q_tpc"
+
+config SYS_VENDOR
+	default "k+p"
+
+config SYS_CONFIG_NAME
+	default "kp_imx6q_tpc"
+
+endif
diff --git a/board/k+p/kp_imx6q_tpc/MAINTAINERS b/board/k+p/kp_imx6q_tpc/MAINTAINERS
new file mode 100644
index 0000000000..6c4c8dd28e
--- /dev/null
+++ b/board/k+p/kp_imx6q_tpc/MAINTAINERS
@@ -0,0 +1,6 @@
+KP_IMX6Q_TPC BOARD
+M:	Lukasz Majewski <lukma@denx.de>
+S:	Maintained
+F:	board/k+p/kp_imx6q_tpc/
+F:	include/configs/kp_imx6q_tpc.h
+F:	configs/kp_imx6q_tpc_defconfig
diff --git a/board/k+p/kp_imx6q_tpc/Makefile b/board/k+p/kp_imx6q_tpc/Makefile
new file mode 100644
index 0000000000..51cbd3e843
--- /dev/null
+++ b/board/k+p/kp_imx6q_tpc/Makefile
@@ -0,0 +1,11 @@
+#
+# Copyright (C) 2018 Lukasz Majewski <lukma@denx.de>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+ifdef CONFIG_SPL_BUILD
+obj-y	:= kp_imx6q_tpc_spl.o
+else
+obj-y	:= kp_imx6q_tpc.o
+endif
diff --git a/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc.c b/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc.c
new file mode 100644
index 0000000000..9a5b88029f
--- /dev/null
+++ b/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc.c
@@ -0,0 +1,302 @@
+/*
+ * K+P iMX6Q KP_IMX6Q_TPC board configuration
+ *
+ * Copyright (C) 2018 Lukasz Majewski <lukma@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <errno.h>
+#include <fsl_esdhc.h>
+#include <fuse.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <mmc.h>
+#include <net.h>
+#include <netdev.h>
+#include <usb.h>
+#include <usb/ehci-ci.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define ENET_PAD_CTRL							\
+	(PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |	\
+	 PAD_CTL_HYS)
+
+#define I2C_PAD_CTRL							\
+	(PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |	\
+	PAD_CTL_HYS | PAD_CTL_ODE | PAD_CTL_SRE_FAST)
+
+#define PC			MUX_PAD_CTRL(I2C_PAD_CTRL)
+
+static struct i2c_pads_info kp_imx6q_tpc_i2c_pad_info0 = {
+	.scl = {
+		.i2c_mode  = MX6Q_PAD_CSI0_DAT9__I2C1_SCL | PC,
+		.gpio_mode = MX6Q_PAD_CSI0_DAT9__GPIO5_IO27 | PC,
+		.gp = IMX_GPIO_NR(5, 27)
+	},
+	.sda = {
+		 .i2c_mode = MX6Q_PAD_CSI0_DAT8__I2C1_SDA | PC,
+		 .gpio_mode = MX6Q_PAD_CSI0_DAT8__GPIO5_IO26 | PC,
+		 .gp = IMX_GPIO_NR(5, 26)
+	}
+};
+
+static struct i2c_pads_info kp_imx6q_tpc_i2c_pad_info1 = {
+	.scl = {
+		.i2c_mode  = MX6Q_PAD_KEY_COL3__I2C2_SCL | PC,
+		.gpio_mode = MX6Q_PAD_KEY_COL3__GPIO4_IO12 | PC,
+		.gp = IMX_GPIO_NR(4, 12)
+	},
+	.sda = {
+		 .i2c_mode = MX6Q_PAD_KEY_ROW3__I2C2_SDA | PC,
+		 .gpio_mode = MX6Q_PAD_KEY_ROW3__GPIO4_IO13 | PC,
+		 .gp = IMX_GPIO_NR(4, 13)
+	}
+};
+
+int dram_init(void)
+{
+	gd->ram_size = imx_ddr_size();
+	return 0;
+}
+
+/*
+ * Do not overwrite the console
+ * Use always serial for U-Boot console
+ */
+int overwrite_console(void)
+{
+	return 1;
+}
+
+#ifdef CONFIG_FEC_MXC
+static iomux_v3_cfg_t const enet_pads[] = {
+	IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_ENET_MDC__ENET_MDC	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL |
+		   MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3	| MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL |
+		   MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	/* AR8031 PHY Reset */
+	IOMUX_PADS(PAD_ENET_CRS_DV__GPIO1_IO25	| MUX_PAD_CTRL(NO_PAD_CTRL)),
+};
+
+static void eth_phy_reset(void)
+{
+	/* Reset AR8031 PHY */
+	gpio_direction_output(IMX_GPIO_NR(1, 25), 0);
+	mdelay(10);
+	gpio_set_value(IMX_GPIO_NR(1, 25), 1);
+	udelay(100);
+}
+
+static int setup_fec_clock(void)
+{
+	struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+	/* set gpr1[21] to select anatop clock */
+	clrsetbits_le32(&iomuxc_regs->gpr[1], 0x1 << 21, 0x1 << 21);
+
+	return enable_fec_anatop_clock(0, ENET_50MHZ);
+}
+
+int board_eth_init(bd_t *bis)
+{
+	SETUP_IOMUX_PADS(enet_pads);
+	setup_fec_clock();
+	eth_phy_reset();
+
+	return cpu_eth_init(bis);
+}
+
+static int ar8031_phy_fixup(struct phy_device *phydev)
+{
+	unsigned short val;
+
+	/* To enable AR8031 output a 125MHz clk from CLK_25M */
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);
+
+	val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
+	val &= 0xffe3;
+	val |= 0x18;
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val);
+
+	/* introduce tx clock delay */
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5);
+	val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
+	val |= 0x0100;
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val);
+
+	return 0;
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+	ar8031_phy_fixup(phydev);
+
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_FSL_ESDHC
+
+#define USDHC2_CD_GPIO	IMX_GPIO_NR(1, 4)
+static struct fsl_esdhc_cfg usdhc_cfg[] = {
+	{ USDHC2_BASE_ADDR },
+	{ USDHC4_BASE_ADDR },
+};
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+
+	switch (cfg->esdhc_base) {
+	case USDHC2_BASE_ADDR:
+		return !gpio_get_value(USDHC2_CD_GPIO);
+	case USDHC4_BASE_ADDR:
+		return 1; /* eMMC/uSDHC4 is always present */
+	}
+
+	return 0;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	int i, ret;
+
+	/*
+	 * According to the board_mmc_init() the following map is done:
+	 * (U-Boot device node)    (Physical Port)
+	 * mmc0                    micro SD
+	 * mmc2                    eMMC
+	 */
+	gpio_direction_input(USDHC2_CD_GPIO);
+
+	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
+	usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
+
+	for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
+		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_USB_EHCI_MX6
+static void setup_usb(void)
+{
+	/*
+	 * Set daisy chain for otg_pin_id on MX6Q.
+	 * For MX6DL, this bit is reserved.
+	 */
+	imx_iomux_set_gpr_register(1, 13, 1, 0);
+}
+
+int board_usb_phy_mode(int port)
+{
+	if (port == 1)
+		return USB_INIT_HOST;
+	else
+		return USB_INIT_DEVICE;
+}
+
+int board_ehci_power(int port, int on)
+{
+	switch (port) {
+	case 0:
+		break;
+	case 1:
+		gpio_direction_output(IMX_GPIO_NR(3, 31), !!on);
+		break;
+	default:
+		printf("MXC USB port %d not yet supported\n", port);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+#endif
+
+int board_early_init_f(void)
+{
+#ifdef CONFIG_USB_EHCI_MX6
+	setup_usb();
+#endif
+
+	return 0;
+}
+
+int board_init(void)
+{
+	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	/* Enable eim_slow clocks */
+	setbits_le32(&mxc_ccm->CCGR6, 0x1 << MXC_CCM_CCGR6_EMI_SLOW_OFFSET);
+
+	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &kp_imx6q_tpc_i2c_pad_info0);
+	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &kp_imx6q_tpc_i2c_pad_info1);
+
+	return 0;
+}
+
+#ifdef CONFIG_CMD_BMODE
+static const struct boot_mode board_boot_modes[] = {
+	/* 4 bit bus width */
+	{"sd2",  MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
+	/* 8 bit bus width */
+	{"emmc", MAKE_CFGVAL(0x60, 0x58, 0x00, 0x00)},
+	{NULL,	 0},
+};
+#endif
+
+int board_late_init(void)
+{
+#ifdef CONFIG_CMD_BMODE
+	add_board_boot_modes(board_boot_modes);
+#endif
+
+	env_set("boardname", "kp-tpc");
+	env_set("boardsoc", "imx6q");
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts("Board: K+P KP_IMX6Q_TPC i.MX6Q\n");
+	return 0;
+}
diff --git a/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc_spl.c b/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc_spl.c
new file mode 100644
index 0000000000..3fdfea7546
--- /dev/null
+++ b/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc_spl.c
@@ -0,0 +1,338 @@
+/*
+ * K+P iMX6Q KP_IMX6Q_TPC board configuration
+ *
+ * Copyright (C) 2018 Lukasz Majewski <lukma@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-ddr.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <asm/io.h>
+#include <errno.h>
+#include <fuse.h>
+#include <fsl_esdhc.h>
+#include <i2c.h>
+#include <mmc.h>
+#include <spl.h>
+
+#define UART_PAD_CTRL							\
+	(PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |	\
+	 PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
+
+#define USDHC_PAD_CTRL							\
+	(PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |	\
+	 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
+
+DECLARE_GLOBAL_DATA_PTR;
+
+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(0x3FF00000, &ccm->CCGR3);
+	writel(0x00FFF300, &ccm->CCGR4);
+	writel(0x0F0000C3, &ccm->CCGR5);
+	writel(0x000003FF, &ccm->CCGR6);
+}
+
+/* onboard microSD */
+static iomux_v3_cfg_t const usdhc2_pads[] = {
+	IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD2_CLK__SD2_CLK	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD2_CMD__SD2_CMD	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_NANDF_CS3__GPIO6_IO16	| MUX_PAD_CTRL(NO_PAD_CTRL)),
+};
+
+/* eMMC */
+static iomux_v3_cfg_t const usdhc4_pads[] = {
+	IOMUX_PADS(PAD_SD4_DAT0__SD4_DATA0	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD4_DAT1__SD4_DATA1	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD4_DAT2__SD4_DATA2	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD4_DAT3__SD4_DATA3	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD4_DAT4__SD4_DATA4	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD4_DAT5__SD4_DATA5	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD4_DAT6__SD4_DATA6	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD4_DAT7__SD4_DATA7	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD4_CLK__SD4_CLK	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD4_CMD__SD4_CMD	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+};
+
+/* SD */
+static void setup_iomux_sd(void)
+{
+	SETUP_IOMUX_PADS(usdhc2_pads);
+	SETUP_IOMUX_PADS(usdhc4_pads);
+}
+
+/* UART */
+static iomux_v3_cfg_t const uart1_pads[] = {
+	IOMUX_PADS(PAD_SD3_DAT7__UART1_TX_DATA	| MUX_PAD_CTRL(UART_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD3_DAT6__UART1_RX_DATA	| MUX_PAD_CTRL(UART_PAD_CTRL)),
+};
+
+static void setup_iomux_uart(void)
+{
+	SETUP_IOMUX_PADS(uart1_pads);
+}
+
+/* USB */
+static iomux_v3_cfg_t const usb_pads[] = {
+	IOMUX_PADS(PAD_GPIO_1__USB_OTG_ID	| MUX_PAD_CTRL(NO_PAD_CTRL)),
+	IOMUX_PADS(PAD_EIM_D31__GPIO3_IO31	| MUX_PAD_CTRL(NO_PAD_CTRL)),
+};
+
+static void setup_iomux_usb(void)
+{
+	SETUP_IOMUX_PADS(usb_pads);
+}
+
+/* DDR3 */
+static const struct mx6dq_iomux_ddr_regs mx6_ddr_ioregs = {
+	.dram_sdclk_0 = 0x00000030,
+	.dram_sdclk_1 = 0x00000030,
+	.dram_cas = 0x00000030,
+	.dram_ras = 0x00000030,
+	.dram_reset = 0x00000030,
+	.dram_sdcke0 = 0x00003000,
+	.dram_sdcke1 = 0x00003000,
+	.dram_sdba2 = 0x00000000,
+	.dram_sdodt0 = 0x00000030,
+	.dram_sdodt1 = 0x00000030,
+
+	.dram_sdqs0 = 0x00000018,
+	.dram_sdqs1 = 0x00000018,
+	.dram_sdqs2 = 0x00000018,
+	.dram_sdqs3 = 0x00000018,
+	.dram_sdqs4 = 0x00000018,
+	.dram_sdqs5 = 0x00000018,
+	.dram_sdqs6 = 0x00000018,
+	.dram_sdqs7 = 0x00000018,
+
+	.dram_dqm0 = 0x00000018,
+	.dram_dqm1 = 0x00000018,
+	.dram_dqm2 = 0x00000018,
+	.dram_dqm3 = 0x00000018,
+	.dram_dqm4 = 0x00000018,
+	.dram_dqm5 = 0x00000018,
+	.dram_dqm6 = 0x00000018,
+	.dram_dqm7 = 0x00000018,
+};
+
+static const struct mx6dq_iomux_grp_regs mx6_grp_ioregs = {
+	.grp_ddr_type = 0x000c0000,
+	.grp_ddrmode_ctl = 0x00020000,
+	.grp_ddrpke = 0x00000000,
+	.grp_addds = 0x00000030,
+	.grp_ctlds = 0x00000030,
+	.grp_ddrmode = 0x00020000,
+	.grp_b0ds = 0x00000018,
+	.grp_b1ds = 0x00000018,
+	.grp_b2ds = 0x00000018,
+	.grp_b3ds = 0x00000018,
+	.grp_b4ds = 0x00000018,
+	.grp_b5ds = 0x00000018,
+	.grp_b6ds = 0x00000018,
+	.grp_b7ds = 0x00000018,
+};
+
+static const struct mx6_mmdc_calibration mx6_4x256mx16_mmdc_calib = {
+	.p0_mpwldectrl0 = 0x001F001F,
+	.p0_mpwldectrl1 = 0x001F001F,
+	.p1_mpwldectrl0 = 0x001F001F,
+	.p1_mpwldectrl1 = 0x001F001F,
+	.p0_mpdgctrl0 = 0x43270338,
+	.p0_mpdgctrl1 = 0x03200314,
+	.p1_mpdgctrl0 = 0x431A032F,
+	.p1_mpdgctrl1 = 0x03200263,
+	.p0_mprddlctl = 0x4B434748,
+	.p1_mprddlctl = 0x4445404C,
+	.p0_mpwrdlctl = 0x38444542,
+	.p1_mpwrdlctl = 0x4935493A,
+};
+
+/* MT41K256M16 (4Gb density) */
+static const struct mx6_ddr3_cfg mt41k256m16 = {
+	.mem_speed = 1600,
+	.density = 4,
+	.width = 16,
+	.banks = 8,
+	.rowaddr = 15,
+	.coladdr = 10,
+	.pagesz = 2,
+	.trcd = 1375,
+	.trcmin = 4875,
+	.trasmin = 3500,
+};
+
+#ifdef CONFIG_MX6_DDRCAL
+static void spl_dram_print_cal(struct mx6_ddr_sysinfo const *sysinfo)
+{
+	struct mx6_mmdc_calibration calibration = {0};
+
+	mmdc_read_calibration(sysinfo, &calibration);
+
+	debug(".p0_mpdgctrl0\t= 0x%08X\n", calibration.p0_mpdgctrl0);
+	debug(".p0_mpdgctrl1\t= 0x%08X\n", calibration.p0_mpdgctrl1);
+	debug(".p0_mprddlctl\t= 0x%08X\n", calibration.p0_mprddlctl);
+	debug(".p0_mpwrdlctl\t= 0x%08X\n", calibration.p0_mpwrdlctl);
+	debug(".p0_mpwldectrl0\t= 0x%08X\n", calibration.p0_mpwldectrl0);
+	debug(".p0_mpwldectrl1\t= 0x%08X\n", calibration.p0_mpwldectrl1);
+	debug(".p1_mpdgctrl0\t= 0x%08X\n", calibration.p1_mpdgctrl0);
+	debug(".p1_mpdgctrl1\t= 0x%08X\n", calibration.p1_mpdgctrl1);
+	debug(".p1_mprddlctl\t= 0x%08X\n", calibration.p1_mprddlctl);
+	debug(".p1_mpwrdlctl\t= 0x%08X\n", calibration.p1_mpwrdlctl);
+	debug(".p1_mpwldectrl0\t= 0x%08X\n", calibration.p1_mpwldectrl0);
+	debug(".p1_mpwldectrl1\t= 0x%08X\n", calibration.p1_mpwldectrl1);
+}
+
+static void spl_dram_perform_cal(struct mx6_ddr_sysinfo const *sysinfo)
+{
+	int ret;
+
+	/* Perform DDR DRAM calibration */
+	udelay(100);
+	ret = mmdc_do_write_level_calibration(sysinfo);
+	if (ret) {
+		printf("DDR: Write level calibration error [%d]\n", ret);
+		return;
+	}
+
+	ret = mmdc_do_dqs_calibration(sysinfo);
+	if (ret) {
+		printf("DDR: DQS calibration error [%d]\n", ret);
+		return;
+	}
+
+	spl_dram_print_cal(sysinfo);
+}
+#endif /* CONFIG_MX6_DDRCAL */
+
+static void spl_dram_init(void)
+{
+	struct mx6_ddr_sysinfo sysinfo = {
+		/* width of data bus:0=16,1=32,2=64 */
+		.dsize = 2,
+		/* config for full 4GB range so that get_mem_size() works */
+		.cs_density = 32, /* 32Gb per CS */
+		/* single chip select */
+		.ncs = 1,
+		.cs1_mirror = 0,
+		.rtt_wr = 1 /*DDR3_RTT_60_OHM*/,	/* RTT_Wr = RZQ/4 */
+		.rtt_nom = 2 /*DDR3_RTT_120_OHM*/,	/* RTT_Nom = RZQ/2 */
+		.walat = 1,	/* Write additional latency */
+		.ralat = 5,	/* Read additional latency */
+		.mif3_mode = 3,	/* Command prediction working mode */
+		.bi_on = 1,	/* Bank interleaving enabled */
+		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
+		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
+		.pd_fast_exit = 1, /* enable precharge power-down fast exit */
+		.ddr_type = DDR_TYPE_DDR3,
+		.refsel = 1,	/* Refresh cycles at 32KHz */
+		.refr = 7,	/* 8 refresh commands per refresh cycle */
+	};
+
+	mx6dq_dram_iocfg(64, &mx6_ddr_ioregs, &mx6_grp_ioregs);
+	mx6_dram_cfg(&sysinfo, &mx6_4x256mx16_mmdc_calib, &mt41k256m16);
+
+#ifdef CONFIG_MX6_DDRCAL
+	spl_dram_perform_cal(&sysinfo);
+#endif
+}
+
+struct fsl_esdhc_cfg usdhc_cfg[] = {
+	{USDHC2_BASE_ADDR},
+	{USDHC4_BASE_ADDR},
+};
+
+#define USDHC2_CD_GPIO	IMX_GPIO_NR(1, 4)
+int board_mmc_getcd(struct mmc *mmc)
+{
+	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+	int ret = 0;
+
+	switch (cfg->esdhc_base) {
+	case USDHC2_BASE_ADDR:
+		ret = !gpio_get_value(USDHC2_CD_GPIO);
+		break;
+	case USDHC4_BASE_ADDR:
+		ret = 1; /* eMMC/uSDHC4 is always present */
+		break;
+	}
+
+	return ret;
+}
+
+int board_mmc_init(bd_t *bd)
+{
+	struct src *psrc = (struct src *)SRC_BASE_ADDR;
+	unsigned int reg = readl(&psrc->sbmr1) >> 11;
+	/*
+	 * Upon reading BOOT_CFG register the following map is done:
+	 * Bit 11 and 12 of BOOT_CFG register can determine the current
+	 * mmc port
+	 * 0x1                  SD1
+	 * 0x3                  SD4
+	 */
+
+	switch (reg & 0x3) {
+	case 0x1:
+		SETUP_IOMUX_PADS(usdhc2_pads);
+		usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
+		usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
+		gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
+		break;
+	case 0x3:
+		SETUP_IOMUX_PADS(usdhc4_pads);
+		usdhc_cfg[0].esdhc_base = USDHC4_BASE_ADDR;
+		usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
+		gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
+		break;
+	}
+
+	return fsl_esdhc_initialize(bd, &usdhc_cfg[0]);
+}
+
+void board_init_f(ulong dummy)
+{
+	/* setup AIPS and disable watchdog */
+	arch_cpu_init();
+
+	ccgr_init();
+	gpr_init();
+
+	/* setup GP timer */
+	timer_init();
+
+	setup_iomux_sd();
+	setup_iomux_uart();
+	setup_iomux_usb();
+
+	/* UART clocks enabled and gd valid - init serial console */
+	preloader_console_init();
+
+	/* DDR initialization */
+	spl_dram_init();
+
+	/* Clear the BSS. */
+	memset(__bss_start, 0, __bss_end - __bss_start);
+
+	/* load/boot image from boot device */
+	board_init_r(NULL, 0);
+}