board/seco: Add mx6q-uq7 basic board support

Add basic SECO MX6Q/uQ7 board support (Ethernet, UART, SD are supported).
It also adds a Kconfig skeleton to later add more SECO board (supporting
SoC and board variants).

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

arch/arm/cpu/armv7/mx6/Kconfig

@@ -25,7 +25,18 @@ config MX6SL
 config MX6SX
 	bool
 
+choice
+	prompt "MX6 board select"
+
+config TARGET_SECOMX6
+	bool "Support secomx6 boards"
+	select CPU_V7
+
+endchoice
+
 config SYS_SOC
 	default "mx6"
 
+source "board/seco/Kconfig"
+
 endif

board/seco/Kconfig

+if TARGET_SECOMX6
+
+choice
+	prompt "SECO i.MX6 Board variant"
+
+config SECOMX6_Q7
+	bool "Q7"
+
+config SECOMX6_UQ7
+	bool "uQ7"
+
+config SECOMX6_USBC
+	bool "uSBC"
+
+endchoice
+
+choice
+	prompt "SECO i.MX6 SoC variant"
+
+config SECOMX6Q
+	bool "i.MX6Q"
+	select MX6Q
+
+config SECOMX6DL
+	bool "i.MX6DL"
+	select MX6DL
+
+config SECOMX6S
+	bool "i.MX6S"
+	select MX6S
+
+endchoice
+
+choice
+	prompt "DDR size"
+
+config SECOMX6_512MB
+	bool "512MB"
+
+config SECOMX6_1GB
+	bool "1GB"
+
+config SECOMX6_2GB
+	bool "2GB"
+
+config SECOMX6_4GB
+	bool "4GB"
+
+endchoice
+
+config IMX_CONFIG
+	default "board/seco/mx6quq7/mx6quq7-2g.cfg" if SECOMX6_UQ7 && SECOMX6Q && SECOMX6_2GB
+
+config SYS_BOARD
+	default "mx6quq7" if SECOMX6_UQ7 && SECOMX6Q
+
+config SYS_VENDOR
+	default "seco"
+
+config SYS_CONFIG_NAME
+	default "secomx6quq7" if SECOMX6_UQ7 && SECOMX6Q
+
+endif

board/seco/common/Makefile

+
+obj-$(CONFIG_TARGET_SECOMX6) += mx6.o

board/seco/common/mx6.c

+/*
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ * Copyright (C) 2015 ECA Sinters
+ *
+ * Author: Fabio Estevam <fabio.estevam@freescale.com>
+ * Modified by: Boris Brezillon <boris.brezillon@free-electrons.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/boot_mode.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <asm/arch/crm_regs.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <micrel.h>
+#include <asm/imx-common/mxc_i2c.h>
+#include <i2c.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)
+
+static iomux_v3_cfg_t const uart2_pads[] = {
+	MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+void seco_mx6_setup_uart_iomux(void)
+{
+	imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
+}
+
+#define ENET_PAD_CTRL	(PAD_CTL_PUS_47K_UP |	\
+			 PAD_CTL_SPEED_MED |	\
+			 PAD_CTL_DSE_40ohm |	\
+			 PAD_CTL_HYS)
+
+static iomux_v3_cfg_t const enet_pads[] = {
+	MX6_PAD_ENET_MDIO__ENET_MDIO		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_ENET_MDC__ENET_MDC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TXC__RGMII_TXC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD0__RGMII_TD0		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD1__RGMII_TD1		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD2__RGMII_TD2		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD3__RGMII_TD3		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_ENET_REF_CLK__ENET_TX_CLK	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RXC__RGMII_RXC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RD0__RGMII_RD0		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RD1__RGMII_RD1		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RD2__RGMII_RD2		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RD3__RGMII_RD3		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
+void seco_mx6_setup_enet_iomux(void)
+{
+	imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
+}
+
+int seco_mx6_rgmii_rework(struct phy_device *phydev)
+{
+	/* control data pad skew - devaddr = 0x02, register = 0x04 */
+	ksz9031_phy_extended_write(phydev, 0x02,
+				   MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
+				   MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
+	/* rx data pad skew - devaddr = 0x02, register = 0x05 */
+	ksz9031_phy_extended_write(phydev, 0x02,
+				   MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
+				   MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
+	/* tx data pad skew - devaddr = 0x02, register = 0x05 */
+	ksz9031_phy_extended_write(phydev, 0x02,
+				   MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
+				   MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
+
+	/* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */
+	ksz9031_phy_extended_write(phydev, 0x02,
+				   MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
+				   MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03FF);
+	return 0;
+}
+
+#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 iomux_v3_cfg_t const usdhc3_pads[] = {
+	MX6_PAD_SD3_CLK__SD3_CLK	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD3_CMD__SD3_CMD	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD3_DAT0__SD3_DATA0	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD3_DAT1__SD3_DATA1	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD3_DAT2__SD3_DATA2	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD3_DAT3__SD3_DATA3	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t const usdhc4_pads[] = {
+	MX6_PAD_SD4_CLK__SD4_CLK	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD4_CMD__SD4_CMD	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD4_DAT0__SD4_DATA0	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD4_DAT1__SD4_DATA1	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD4_DAT2__SD4_DATA2	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD4_DAT3__SD4_DATA3	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+void seco_mx6_setup_usdhc_iomux(int id)
+{
+	switch (id) {
+	case 3:
+		imx_iomux_v3_setup_multiple_pads(usdhc3_pads,
+						 ARRAY_SIZE(usdhc3_pads));
+		break;
+
+	case 4:
+		imx_iomux_v3_setup_multiple_pads(usdhc4_pads,
+						 ARRAY_SIZE(usdhc4_pads));
+		break;
+
+	default:
+		printf("Warning: invalid usdhc id (%d)\n", id);
+		break;
+	}
+}

board/seco/common/mx6.h

+#ifndef __SECO_COMMON_MX6_H
+#define __SECO_COMMON_MX6_H
+
+void seco_mx6_setup_uart_iomux(void);
+void seco_mx6_setup_enet_iomux(void);
+int seco_mx6_rgmii_rework(struct phy_device *phydev);
+void seco_mx6_setup_usdhc_iomux(int id);
+
+#endif /* __SECO_COMMON_MX6_H */

board/seco/mx6quq7/MAINTAINERS

+MX6QUQ7 BOARD
+M:	Boris Brezillon <boris.brezillon@free-electrons.com>
+S:	Maintained
+F:	board/seco/mx6quq7/
+F:	include/configs/secomx6quq7.h
+F:	configs/secomx6quq7_defconfig

board/seco/mx6quq7/Makefile

+#
+# (C) Copyright 2015 ECA Sinters
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y  := mx6quq7.o

board/seco/mx6quq7/mx6quq7-2g.cfg

+/*
+ * Copyright (C) 2013 Seco USA Inc
+ *
+ * SPDX-License-Identifier:     GPL-2.0
+ *
+ * Refer doc/README.imximage for more details about how-to configure
+ * and create imximage boot image
+ *
+ * The syntax is taken as close as possible with the kwbimage
+ */
+
+/* image version */
+IMAGE_VERSION	2
+
+/*
+ * Boot Device : one of
+ * spi, sd (the board has no nand neither onenand)
+ */
+BOOT_FROM	sd
+
+#define __ASSEMBLY__
+#include <config.h>
+#include "asm/arch/mx6-ddr.h"
+#include "asm/arch/iomux.h"
+#include "asm/arch/crm_regs.h"
+
+/* DDR IO TYPE */
+DATA 4, MX6_IOM_GRP_DDRPKE,	0x00000000
+DATA 4, MX6_IOM_GRP_DDR_TYPE,	0x000C0000
+
+/* DATA STROBE */
+DATA 4, MX6_IOM_DDRMODE_CTL,	0x00020000
+DATA 4, MX6_IOM_DRAM_SDQS0,	0x00000028
+DATA 4, MX6_IOM_DRAM_SDQS1,	0x00000028
+DATA 4, MX6_IOM_DRAM_SDQS2,	0x00000028
+DATA 4, MX6_IOM_DRAM_SDQS3,	0x00000028
+DATA 4, MX6_IOM_DRAM_SDQS4,	0x00000028
+DATA 4, MX6_IOM_DRAM_SDQS5,	0x00000028
+DATA 4, MX6_IOM_DRAM_SDQS6,	0x00000028
+DATA 4, MX6_IOM_DRAM_SDQS7,	0x00000028
+
+/* DATA */
+DATA 4, MX6_IOM_GRP_DDRMODE,    0x00020000
+DATA 4, MX6_IOM_GRP_B0DS,	0x00000028
+DATA 4, MX6_IOM_GRP_B1DS,	0x00000028
+DATA 4, MX6_IOM_GRP_B2DS,	0x00000028
+DATA 4, MX6_IOM_GRP_B3DS,	0x00000028
+DATA 4, MX6_IOM_GRP_B4DS,	0x00000028
+DATA 4, MX6_IOM_GRP_B5DS,	0x00000028
+DATA 4, MX6_IOM_GRP_B6DS,	0x00000028
+DATA 4, MX6_IOM_GRP_B7DS,	0x00000028
+DATA 4, MX6_IOM_DRAM_DQM0,      0x00000028
+DATA 4, MX6_IOM_DRAM_DQM1,      0x00000028
+DATA 4, MX6_IOM_DRAM_DQM2,      0x00000028
+DATA 4, MX6_IOM_DRAM_DQM3,      0x00000028
+DATA 4, MX6_IOM_DRAM_DQM4,      0x00000028
+DATA 4, MX6_IOM_DRAM_DQM5,      0x00000028
+DATA 4, MX6_IOM_DRAM_DQM6,      0x00000028
+DATA 4, MX6_IOM_DRAM_DQM7,      0x00000028
+/* ADDRESS */
+DATA 4, MX6_IOM_GRP_ADDDS,	0x00000028
+DATA 4, MX6_IOM_DRAM_CAS,       0x00000028
+DATA 4, MX6_IOM_DRAM_RAS,       0x00000028
+
+/* CONTROL */
+DATA 4, MX6_IOM_GRP_CTLDS,	0x00000030
+DATA 4, MX6_IOM_DRAM_RESET,     0x00000028
+DATA 4, MX6_IOM_DRAM_SDBA2,     0x00000000
+DATA 4, MX6_IOM_DRAM_SDODT0,    0x00000028
+DATA 4, MX6_IOM_DRAM_SDODT1,    0x00000028
+
+/* CLOCK */
+DATA 4, MX6_IOM_DRAM_SDCLK_0,	0x00000028
+DATA 4, MX6_IOM_DRAM_SDCLK_1,	0x00000028
+
+/*
+ * DDR3 SETTINGS
+ * Read Data Bit Delay
+ */
+DATA 4, MX6_MMDC_P0_MPRDDQBY0DL,	0x33333333
+DATA 4, MX6_MMDC_P0_MPRDDQBY1DL,	0x33333333
+DATA 4, MX6_MMDC_P0_MPRDDQBY2DL,	0x33333333
+DATA 4, MX6_MMDC_P0_MPRDDQBY3DL,	0x33333333
+DATA 4, MX6_MMDC_P1_MPRDDQBY0DL,	0x33333333
+DATA 4, MX6_MMDC_P1_MPRDDQBY1DL,	0x33333333
+DATA 4, MX6_MMDC_P1_MPRDDQBY2DL,	0x33333333
+DATA 4, MX6_MMDC_P1_MPRDDQBY3DL,	0x33333333
+
+
+/* Write Leveling */
+DATA 4, MX6_MMDC_P0_MPWLDECTRL0,        0x001F001F
+DATA 4, MX6_MMDC_P0_MPWLDECTRL1,        0x001F001F
+DATA 4, MX6_MMDC_P1_MPWLDECTRL0,        0x001F0001
+DATA 4, MX6_MMDC_P1_MPWLDECTRL1,        0x001F001F
+
+/* DQS gating, read delay, write delay calibration values */
+DATA 4, MX6_MMDC_P0_MPDGCTRL0,  0x431A0326
+DATA 4, MX6_MMDC_P0_MPDGCTRL1,  0x0323031B
+DATA 4, MX6_MMDC_P1_MPDGCTRL0,  0x433F0340
+DATA 4, MX6_MMDC_P1_MPDGCTRL1,  0x0345031C
+
+/* Read calibration */
+DATA 4, MX6_MMDC_P0_MPRDDLCTL,  0x40343137
+DATA 4, MX6_MMDC_P1_MPRDDLCTL,  0x40372F45
+
+/* write calibration */
+DATA 4, MX6_MMDC_P0_MPWRDLCTL,  0x32414741
+DATA 4, MX6_MMDC_P1_MPWRDLCTL,  0x4731473C
+
+/* Complete calibration by forced measurement: */
+DATA 4, MX6_MMDC_P0_MPMUR0,     0x00000800
+DATA 4, MX6_MMDC_P1_MPMUR0,     0x00000800
+
+/*
+ * MMDC init:
+ * in DDR3, 64-bit mode, only MMDC0 is init
+ */
+DATA 4, MX6_MMDC_P0_MDPDC,	0x00020036
+DATA 4, MX6_MMDC_P0_MDOTC,	0x09444040
+
+DATA 4, MX6_MMDC_P0_MDCFG0,	0x898E7955
+DATA 4, MX6_MMDC_P0_MDCFG1,	0xFF328F64
+DATA 4, MX6_MMDC_P0_MDCFG2,	0x01FF00DB
+
+DATA 4, MX6_MMDC_P0_MDMISC,	0x00001740
+DATA 4, MX6_MMDC_P0_MDSCR,	0x00008000
+DATA 4, MX6_MMDC_P0_MDRWD,	0x000026D2
+DATA 4, MX6_MMDC_P0_MDOR,       0x008E1023
+
+/* CS0_END = 2304MB in step da 256Mb -> [(2304*8/256) - 1] */
+DATA 4, MX6_MMDC_P0_MDASP,	0x00000047
+
+/* SDE_1=0; ROW=3; BL=1; DSIZ=2 -> 64 bit */
+DATA 4, MX6_MMDC_P0_MDCTL,	0x841A0000
+
+/* Initialize DDR3 on CS_0 and CS_1 */
+DATA 4, MX6_MMDC_P0_MDSCR,	0x02088032
+DATA 4, MX6_MMDC_P0_MDSCR,	0x00008033
+DATA 4, MX6_MMDC_P0_MDSCR,	0x00048031
+
+/* P0 01c */
+/* write 0x0940 to MR0 bank_0 (Burst Type=1 (Interlived)) */
+DATA 4, MX6_MMDC_P0_MDSCR,	0x09408030
+
+/*ZQ - Calibrationi */
+DATA 4, MX6_MMDC_P0_MPZQHWCTRL, 0xa1390003
+DATA 4, MX6_MMDC_P0_MDSCR,      0x04008040
+DATA 4, MX6_MMDC_P0_MDREF,      0x00007800
+
+DATA 4, MX6_MMDC_P0_MPODTCTRL,  0x00022227
+DATA 4, MX6_MMDC_P1_MPODTCTRL,  0x00022227
+
+DATA 4, MX6_MMDC_P0_MDPDC,      0x00025576
+
+DATA 4, MX6_MMDC_P0_MAPSR,      0x00011006
+DATA 4, MX6_MMDC_P0_MDSCR,      0x00000000
+
+/* set the default clock gate to save power */
+DATA 4, CCM_CCGR0, 0x00C03F3F
+DATA 4, CCM_CCGR1, 0x0030FC03
+DATA 4, CCM_CCGR2, 0x0FFFC000
+DATA 4, CCM_CCGR3, 0x3FF00000
+DATA 4, CCM_CCGR4, 0x00FFF300
+DATA 4, CCM_CCGR5, 0x0F0000C3
+DATA 4, CCM_CCGR6, 0x000003FF
+
+/* enable AXI cache for VDOA/VPU/IPU */
+DATA 4, MX6_IOMUXC_GPR4, 0xF00000FF
+
+/* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
+DATA 4, MX6_IOMUXC_GPR6, 0x007F007F
+DATA 4, MX6_IOMUXC_GPR7, 0x007F007F
+

board/seco/mx6quq7/mx6quq7.c

+/*
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ * Copyright (C) 2015 ECA Sinters
+ *
+ * Author: Fabio Estevam <fabio.estevam@freescale.com>
+ * Modified by: Boris Brezillon <boris.brezillon@free-electrons.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/boot_mode.h>
+#include <malloc.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <asm/arch/crm_regs.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <micrel.h>
+#include <asm/imx-common/mxc_i2c.h>
+#include <i2c.h>
+
+#include "../common/mx6.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
+
+	return 0;
+}
+
+int board_early_init_f(void)
+{
+	seco_mx6_setup_uart_iomux();
+
+	return 0;
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+	seco_mx6_rgmii_rework(phydev);
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	uint32_t base = IMX_FEC_BASE;
+	struct mii_dev *bus = NULL;
+	struct phy_device *phydev = NULL;
+	int ret = 0;
+
+	seco_mx6_setup_enet_iomux();
+
+#ifdef CONFIG_FEC_MXC
+	bus = fec_get_miibus(base, -1);
+	if (!bus)
+		return -ENOMEM;
+
+	/* scan phy 4,5,6,7 */
+	phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
+	if (!phydev) {
+		free(bus);
+		return -ENOMEM;
+	}
+
+	printf("using phy at %d\n", phydev->addr);
+	ret  = fec_probe(bis, -1, base, bus, phydev);
+	if (ret) {
+		free(phydev);
+		free(bus);
+		printf("FEC MXC: %s:failed\n", __func__);
+	}
+#endif
+
+	return ret;
+}
+
+static struct fsl_esdhc_cfg usdhc_cfg[2] = {
+	{USDHC3_BASE_ADDR},
+	{USDHC2_BASE_ADDR},
+};
+
+int board_mmc_init(bd_t *bis)
+{
+	u32 index = 0;
+	int ret;
+
+	/*
+	 * Following map is done:
+	 * (U-boot device node)    (Physical Port)
+	 * mmc0                    eMMC on Board
+	 * mmc1                    Ext SD
+	 */
+	for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
+		switch (index) {
+		case 0:
+			seco_mx6_setup_usdhc_iomux(3);
+			usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
+			usdhc_cfg[0].max_bus_width = 4;
+			break;
+		case 1:
+			seco_mx6_setup_usdhc_iomux(4);
+			usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
+			usdhc_cfg[1].max_bus_width = 4;
+			break;
+
+		default:
+			printf("Warning: %d exceed maximum number of SD ports %d\n",
+			       index + 1, CONFIG_SYS_FSL_USDHC_NUM);
+			return -EINVAL;
+		}
+
+		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	imx_iomux_v3_setup_pad(MX6_PAD_NANDF_D4__GPIO2_IO04 |
+			       MUX_PAD_CTRL(NO_PAD_CTRL));
+
+	gpio_direction_output(IMX_GPIO_NR(2, 4), 0);
+
+	/* Set Low */
+	gpio_set_value(IMX_GPIO_NR(2, 4), 0);
+	udelay(1000);
+
+	/* Set High */
+	gpio_set_value(IMX_GPIO_NR(2, 4), 1);
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts("Board: SECO uQ7\n");
+
+	return 0;
+}

configs/secomx6quq7_defconfig

+CONFIG_SYS_EXTRA_OPTIONS="ENV_IS_IN_MMC"
+CONFIG_ARM=y
+CONFIG_ARCH_MX6=y
+CONFIG_TARGET_SECOMX6=y
+CONFIG_SECOMX6_UQ7=y
+CONFIG_SECOMX6Q=y
+CONFIG_SECOMX6_2GB=y

include/configs/secomx6quq7.h

+/*
+ * Copyright (C) 2013 Seco S.r.l
+ *
+ * Configuration settings for the Seco Boards.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include "mx6_common.h"
+#include <asm/arch/imx-regs.h>
+#include <asm/imx-common/gpio.h>
+#include <linux/sizes.h>
+
+#define CONFIG_SYS_GENERIC_BOARD
+#define CONFIG_DISPLAY_CPUINFO
+#define CONFIG_DISPLAY_BOARDINFO
+
+#define CONFIG_CMDLINE_TAG
+#define CONFIG_SETUP_MEMORY_TAGS
+#define CONFIG_INITRD_TAG
+#define CONFIG_REVISION_TAG
+#define CONFIG_BOARD_REVISION_TAG
+
+/* Size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN		(10 * SZ_1M)
+
+#define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_MXC_GPIO
+
+#define CONFIG_MXC_UART
+#define CONFIG_MXC_UART_BASE		UART2_BASE
+
+/* allow to overwrite serial and ethaddr */
+#define CONFIG_ENV_OVERWRITE
+#define CONFIG_CONS_INDEX		1
+#define CONFIG_BAUDRATE			115200
+
+/* Command definition */
+#include <config_cmd_default.h>
+
+#undef CONFIG_CMD_IMLS
+
+#define CONFIG_CMD_BMODE
+#define CONFIG_CMD_SETEXPR
+
+#define CONFIG_BOOTDELAY		3
+
+#define CONFIG_SYS_MEMTEST_START	0x10000000
+#define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_MEMTEST_START + 500 * SZ_1M)
+#define CONFIG_LOADADDR			0x12000000
+#define CONFIG_SYS_TEXT_BASE		0x17800000
+
+/* MMC Configuration */
+#define CONFIG_FSL_ESDHC
+#define CONFIG_FSL_USDHC
+#define CONFIG_SYS_FSL_USDHC_NUM        2
+#define CONFIG_SYS_FSL_ESDHC_ADDR	0
+
+#define CONFIG_MMC
+#define CONFIG_CMD_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_BOUNCE_BUFFER
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_FAT
+#define CONFIG_DOS_PARTITION
+
+/* Ethernet Configuration */
+#define CONFIG_CMD_PING
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_MII
+#define CONFIG_CMD_NET
+#define CONFIG_FEC_MXC
+#define CONFIG_MII
+#define IMX_FEC_BASE			ENET_BASE_ADDR
+#define CONFIG_FEC_XCV_TYPE		RGMII
+#define CONFIG_ETHPRIME			"FEC"
+#define CONFIG_FEC_MXC_PHYADDR		6
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_MICREL
+
+#define CONFIG_EXTRA_ENV_SETTINGS					\
+	"netdev=eth0\0"							\
+	"ethprime=FEC0\0"						\
+	"netdev=eth0\0"							\
+	"ethprime=FEC0\0"						\
+	"uboot=u-boot.bin\0"						\
+	"kernel=uImage\0"						\
+	"nfsroot=/opt/eldk/arm\0"					\
+	"ip_local=10.0.0.5::10.0.0.1:255.255.255.0::eth0:off\0"		\
+	"ip_server=10.0.0.1\0"						\
+	"nfs_path=/targetfs \0"						\
+	"memory=mem=1024M\0"						\
+	"bootdev=mmc dev 0; ext2load mmc 0:1\0"				\
+	"root=root=/dev/mmcblk0p1\0"					\
+	"option=rootwait rw fixrtc rootflags=barrier=1\0"		\
+	"cpu_freq=arm_freq=996\0"					\
+	"setbootargs=setenv bootargs console=ttymxc1,115200 ${root}"	\
+		" ${option} ${memory} ${cpu_freq}\0"			\
+	"setbootargs_nfs=setenv bootargs console=ttymxc1,115200"	\
+		" root=/dev/nfs  nfsroot=${ip_server}:${nfs_path}"	\
+		" nolock,wsize=4096,rsize=4096  ip=:::::eth0:dhcp"	\
+		" ${memory} ${cpu_freq}\0"				\
+	"setbootdev=setenv boot_dev ${bootdev} 10800000 /boot/uImage\0"	\
+	"bootcmd=run setbootargs; run setbootdev; run boot_dev;"	\
+		" bootm 0x10800000\0"					\
+	"stdin=serial\0"						\
+	"stdout=serial\0"						\
+	"stderr=serial\0"
+
+
+/* Miscellaneous configurable options */
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_SYS_PROMPT		"SECO MX6Q uQ7 U-Boot > "
+
+#define CONFIG_AUTO_COMPLETE
+#define CONFIG_SYS_CBSIZE		256
+
+/* Print Buffer Size */
+#define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE +		\
+					 sizeof(CONFIG_SYS_PROMPT) + 16)
+#define CONFIG_SYS_MAXARGS		16
+#define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
+
+#define CONFIG_SYS_LOAD_ADDR		CONFIG_LOADADDR
+#define CONFIG_SYS_HZ			1000
+
+#define CONFIG_CMDLINE_EDITING
+
+
+/* Physical Memory Map */
+#define CONFIG_NR_DRAM_BANKS		1
+#define PHYS_SDRAM			MMDC0_ARB_BASE_ADDR
+#define PHYS_SDRAM_SIZE			(2u * 1024 * 1024 * 1024)
+
+#define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM
+#define CONFIG_SYS_INIT_RAM_ADDR	IRAM_BASE_ADDR
+#define CONFIG_SYS_INIT_RAM_SIZE	IRAM_SIZE
+
+#define CONFIG_SYS_INIT_SP_OFFSET	\
+	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR		\
+	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
+
+/* FLASH and environment organization */
+#define CONFIG_SYS_NO_FLASH
+
+#define CONFIG_ENV_SIZE			(8 * 1024)
+
+#if defined(CONFIG_ENV_IS_IN_MMC)
+	#define CONFIG_ENV_OFFSET		(6 * 128 * 1024)
+	#define CONFIG_SYS_MMC_ENV_DEV		0
+	#define CONFIG_DYNAMIC_MMC_DEVNO
+#endif
+
+#define CONFIG_OF_LIBFDT
+#define CONFIG_CMD_BOOTZ
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+#define CONFIG_CMD_CACHE
+#endif
+
+#endif /* __CONFIG_H */