Add nitrogen6x board

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>

3 files changed, 996 insertions, 0 deletions

diff --git a/board/boundary/nitrogen6x/Makefile b/board/boundary/nitrogen6x/Makefile
new file mode 100644
index 0000000000..63da7d07df
--- /dev/null
+++ b/board/boundary/nitrogen6x/Makefile
@@ -0,0 +1,41 @@
+#
+# Copyright (C) 2012, Guennadi Liakhovetski <lg@denx.de>
+#
+# (C) Copyright 2012 Freescale Semiconductor, Inc.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB    = $(obj)lib$(BOARD).o
+
+COBJS  := nitrogen6x.o
+
+SRCS   := $(COBJS:.o=.c)
+OBJS   := $(addprefix $(obj),$(COBJS))
+
+$(LIB):        $(obj).depend $(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/boundary/nitrogen6x/README b/board/boundary/nitrogen6x/README
new file mode 100644
index 0000000000..a32f86715e
--- /dev/null
+++ b/board/boundary/nitrogen6x/README
@@ -0,0 +1,77 @@
+U-Boot for the Boundary Devices Nitrogen6X and
+Freescale i.MX6q SabreLite boards
+
+This file contains information for the port of
+U-Boot to the Boundary Devices Nitrogen6X and
+Freescale i.MX6q SabreLite boards.
+
+1. Boot source, boot from SPI NOR
+---------------------------------
+The configuration in this directory supports both the
+Nitrogen6X and Freescale SabreLite board, but in a
+different fashion from Freescale's implementation in
+board/freescale/mx6qsabrelite.
+
+In particular, this image supports booting from SPI NOR
+and saving the environment to SPI NOR.
+
+It does not support 'boot from SD' at offset 0x400
+except through the 'bmode' command.
+	http://lists.denx.de/pipermail/u-boot/2012-August/131151.html
+
+2. Boots using 6q_bootscript on SATA or SD card
+-----------------------------------------------
+The default bootcmd for these boards is configured
+to look for and source a boot script named '6q_bootscript'
+in the root of the first partition of the following
+devices:
+
+	sata 0
+	mmc 0
+	mmc 1
+
+They're searched in the order listed above, trying both the
+ext2 and fat filesystems.
+
+2. Maintaining the SPI NOR
+--------------------------
+A couple of convenience commands
+
+	clearenv - clear environment to factory default
+	upgradeu - look and source a boot script named
+		'6q_upgrade' to upgrade the U-Boot version
+		in SPI NOR. The search is the same as for
+		6q_bootscript described above.
+
+3. Display support
+------------------
+U-Boot support for the following displays is configured by
+default:
+
+    HDMI           - 1024 x 768 for maximum compatibility
+    Hannstar-XGA   - 1024 x 768 LVDS (Freescale part number MCIMX-LVDS1)
+    wsvga-lvds     - 1024 x 600 LVDS (Boundary p/n Nit6X_1024x600)
+    wvga-rgb       - 800 x 480 RGB (Boundary p/n Nit6X_800x480)
+
+Since the ipuv3_fb display driver currently supports only a single display,
+this code auto-detects panel by probing the HDMI Phy for Hot Plug Detect
+or the I2C touch controller of the LVDS and RGB displays in the priority
+listed above.
+
+Setting 'panel' environment variable to one of the names above will
+override auto-detection and force activation of the specified panel.
+
+4. Building
+------------
+
+To build U-Boot for the Nitrogen6x or SabreLite board:
+
+	make nitrogen6x_config
+	make u-boot.imx
+
+If you place the u-boot.imx into a single-partition SD card
+along with a binary version of the boot script 6q_upgrade.txt,
+you can program it using 'upgradeu':
+
+	U-Boot> run upgradeu
+
diff --git a/board/boundary/nitrogen6x/nitrogen6x.c b/board/boundary/nitrogen6x/nitrogen6x.c
new file mode 100644
index 0000000000..eff4d96cbd
--- /dev/null
+++ b/board/boundary/nitrogen6x/nitrogen6x.c
@@ -0,0 +1,878 @@
+/*
+ * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6x_pins.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/mxc_i2c.h>
+#include <asm/imx-common/boot_mode.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <micrel.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <i2c.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |	       \
+	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_PKE | PAD_CTL_PUE |	       \
+	PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_LOW |	       \
+	PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
+
+#define ENET_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |		\
+	PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED	  |		\
+	PAD_CTL_DSE_40ohm   | PAD_CTL_HYS)
+
+#define SPI_PAD_CTRL (PAD_CTL_HYS |				\
+	PAD_CTL_PUS_100K_DOWN | PAD_CTL_SPEED_MED |		\
+	PAD_CTL_DSE_40ohm     | PAD_CTL_SRE_FAST)
+
+#define BUTTON_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |		\
+	PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED   |		\
+	PAD_CTL_DSE_40ohm   | PAD_CTL_HYS)
+
+#define I2C_PAD_CTRL	(PAD_CTL_PKE | PAD_CTL_PUE |		\
+	PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |		\
+	PAD_CTL_DSE_40ohm | PAD_CTL_HYS |			\
+	PAD_CTL_ODE | PAD_CTL_SRE_FAST)
+
+#define WEAK_PULLUP	(PAD_CTL_PKE | PAD_CTL_PUE |		\
+	PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |		\
+	PAD_CTL_DSE_40ohm | PAD_CTL_HYS |			\
+	PAD_CTL_SRE_SLOW)
+
+#define WEAK_PULLDOWN	(PAD_CTL_PKE | PAD_CTL_PUE |		\
+	PAD_CTL_PUS_100K_DOWN | PAD_CTL_SPEED_MED |		\
+	PAD_CTL_DSE_40ohm | PAD_CTL_HYS |			\
+	PAD_CTL_SRE_SLOW)
+
+#define OUTPUT_40OHM (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
+
+	return 0;
+}
+
+iomux_v3_cfg_t const uart1_pads[] = {
+	MX6Q_PAD_SD3_DAT6__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX6Q_PAD_SD3_DAT7__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+iomux_v3_cfg_t const uart2_pads[] = {
+	MX6Q_PAD_EIM_D26__UART2_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX6Q_PAD_EIM_D27__UART2_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+
+/* I2C1, SGTL5000 */
+struct i2c_pads_info i2c_pad_info0 = {
+	.scl = {
+		.i2c_mode = MX6Q_PAD_EIM_D21__I2C1_SCL | PC,
+		.gpio_mode = MX6Q_PAD_EIM_D21__GPIO_3_21 | PC,
+		.gp = IMX_GPIO_NR(3, 21)
+	},
+	.sda = {
+		.i2c_mode = MX6Q_PAD_EIM_D28__I2C1_SDA | PC,
+		.gpio_mode = MX6Q_PAD_EIM_D28__GPIO_3_28 | PC,
+		.gp = IMX_GPIO_NR(3, 28)
+	}
+};
+
+/* I2C2 Camera, MIPI */
+struct i2c_pads_info i2c_pad_info1 = {
+	.scl = {
+		.i2c_mode = MX6Q_PAD_KEY_COL3__I2C2_SCL | PC,
+		.gpio_mode = MX6Q_PAD_KEY_COL3__GPIO_4_12 | PC,
+		.gp = IMX_GPIO_NR(4, 12)
+	},
+	.sda = {
+		.i2c_mode = MX6Q_PAD_KEY_ROW3__I2C2_SDA | PC,
+		.gpio_mode = MX6Q_PAD_KEY_ROW3__GPIO_4_13 | PC,
+		.gp = IMX_GPIO_NR(4, 13)
+	}
+};
+
+/* I2C3, J15 - RGB connector */
+struct i2c_pads_info i2c_pad_info2 = {
+	.scl = {
+		.i2c_mode = MX6Q_PAD_GPIO_5__I2C3_SCL | PC,
+		.gpio_mode = MX6Q_PAD_GPIO_5__GPIO_1_5 | PC,
+		.gp = IMX_GPIO_NR(1, 5)
+	},
+	.sda = {
+		.i2c_mode = MX6Q_PAD_GPIO_16__I2C3_SDA | PC,
+		.gpio_mode = MX6Q_PAD_GPIO_16__GPIO_7_11 | PC,
+		.gp = IMX_GPIO_NR(7, 11)
+	}
+};
+
+iomux_v3_cfg_t const usdhc3_pads[] = {
+	MX6Q_PAD_SD3_CLK__USDHC3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD3_CMD__USDHC3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD3_DAT0__USDHC3_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD3_DAT5__GPIO_7_0    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
+};
+
+iomux_v3_cfg_t const usdhc4_pads[] = {
+	MX6Q_PAD_SD4_CLK__USDHC4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD4_CMD__USDHC4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD4_DAT0__USDHC4_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD4_DAT1__USDHC4_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD4_DAT2__USDHC4_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_SD4_DAT3__USDHC4_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6Q_PAD_NANDF_D6__GPIO_2_6    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
+};
+
+iomux_v3_cfg_t const enet_pads1[] = {
+	MX6Q_PAD_ENET_MDIO__ENET_MDIO		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_ENET_MDC__ENET_MDC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_TXC__ENET_RGMII_TXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_TD0__ENET_RGMII_TD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_TD1__ENET_RGMII_TD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_TD2__ENET_RGMII_TD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_TD3__ENET_RGMII_TD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_TX_CTL__RGMII_TX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_ENET_REF_CLK__ENET_TX_CLK	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	/* pin 35 - 1 (PHY_AD2) on reset */
+	MX6Q_PAD_RGMII_RXC__GPIO_6_30		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* pin 32 - 1 - (MODE0) all */
+	MX6Q_PAD_RGMII_RD0__GPIO_6_25		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* pin 31 - 1 - (MODE1) all */
+	MX6Q_PAD_RGMII_RD1__GPIO_6_27		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* pin 28 - 1 - (MODE2) all */
+	MX6Q_PAD_RGMII_RD2__GPIO_6_28		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* pin 27 - 1 - (MODE3) all */
+	MX6Q_PAD_RGMII_RD3__GPIO_6_29		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
+	MX6Q_PAD_RGMII_RX_CTL__GPIO_6_24	| MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* pin 42 PHY nRST */
+	MX6Q_PAD_EIM_D23__GPIO_3_23		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6Q_PAD_ENET_RXD0__GPIO_1_27		| MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+iomux_v3_cfg_t const enet_pads2[] = {
+	MX6Q_PAD_RGMII_RXC__ENET_RGMII_RXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_RD0__ENET_RGMII_RD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_RD1__ENET_RGMII_RD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_RD2__ENET_RGMII_RD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_RD3__ENET_RGMII_RD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6Q_PAD_RGMII_RX_CTL__RGMII_RX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
+/* wl1271 pads on nitrogen6x */
+iomux_v3_cfg_t const wl12xx_pads[] = {
+	(MX6Q_PAD_NANDF_CS1__GPIO_6_14 & ~MUX_PAD_CTRL_MASK)
+		| MUX_PAD_CTRL(WEAK_PULLDOWN),
+	(MX6Q_PAD_NANDF_CS2__GPIO_6_15 & ~MUX_PAD_CTRL_MASK)
+		| MUX_PAD_CTRL(OUTPUT_40OHM),
+	(MX6Q_PAD_NANDF_CS3__GPIO_6_16 & ~MUX_PAD_CTRL_MASK)
+		| MUX_PAD_CTRL(OUTPUT_40OHM),
+};
+#define WL12XX_WL_IRQ_GP	IMX_GPIO_NR(6, 14)
+#define WL12XX_WL_ENABLE_GP	IMX_GPIO_NR(6, 15)
+#define WL12XX_BT_ENABLE_GP	IMX_GPIO_NR(6, 16)
+
+/* Button assignments for J14 */
+static iomux_v3_cfg_t const button_pads[] = {
+	/* Menu */
+	MX6Q_PAD_NANDF_D1__GPIO_2_1	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
+	/* Back */
+	MX6Q_PAD_NANDF_D2__GPIO_2_2	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
+	/* Labelled Search (mapped to Power under Android) */
+	MX6Q_PAD_NANDF_D3__GPIO_2_3	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
+	/* Home */
+	MX6Q_PAD_NANDF_D4__GPIO_2_4	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
+	/* Volume Down */
+	MX6Q_PAD_GPIO_19__GPIO_4_5	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
+	/* Volume Up */
+	MX6Q_PAD_GPIO_18__GPIO_7_13	| MUX_PAD_CTRL(BUTTON_PAD_CTRL),
+};
+
+static void setup_iomux_enet(void)
+{
+	gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* SABRE Lite PHY rst */
+	gpio_direction_output(IMX_GPIO_NR(1, 27), 0); /* Nitrogen6X PHY rst */
+	gpio_direction_output(IMX_GPIO_NR(6, 30), 1);
+	gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
+	gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
+	gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
+	gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
+	imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1));
+	gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
+
+	/* Need delay 10ms according to KSZ9021 spec */
+	udelay(1000 * 10);
+	gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* SABRE Lite PHY reset */
+	gpio_set_value(IMX_GPIO_NR(1, 27), 1); /* Nitrogen6X PHY reset */
+
+	imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
+}
+
+iomux_v3_cfg_t const usb_pads[] = {
+	MX6Q_PAD_GPIO_17__GPIO_7_12 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static void setup_iomux_uart(void)
+{
+	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
+	imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
+}
+
+#ifdef CONFIG_USB_EHCI_MX6
+int board_ehci_hcd_init(int port)
+{
+	imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));
+
+	/* Reset USB hub */
+	gpio_direction_output(IMX_GPIO_NR(7, 12), 0);
+	mdelay(2);
+	gpio_set_value(IMX_GPIO_NR(7, 12), 1);
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_FSL_ESDHC
+struct fsl_esdhc_cfg usdhc_cfg[2] = {
+	{USDHC3_BASE_ADDR},
+	{USDHC4_BASE_ADDR},
+};
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+	int ret;
+
+	if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
+		gpio_direction_input(IMX_GPIO_NR(7, 0));
+		ret = !gpio_get_value(IMX_GPIO_NR(7, 0));
+	} else {
+		gpio_direction_input(IMX_GPIO_NR(2, 6));
+		ret = !gpio_get_value(IMX_GPIO_NR(2, 6));
+	}
+
+	return ret;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	s32 status = 0;
+	u32 index = 0;
+
+	for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
+		switch (index) {
+		case 0:
+			imx_iomux_v3_setup_multiple_pads(
+				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
+			break;
+		case 1:
+		       imx_iomux_v3_setup_multiple_pads(
+			       usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
+		       break;
+		default:
+		       printf("Warning: you configured more USDHC controllers"
+			       "(%d) then supported by the board (%d)\n",
+			       index + 1, CONFIG_SYS_FSL_USDHC_NUM);
+		       return status;
+		}
+
+		status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
+	}
+
+	return status;
+}
+#endif
+
+u32 get_board_rev(void)
+{
+	return 0x63000;
+}
+
+#ifdef CONFIG_MXC_SPI
+iomux_v3_cfg_t const ecspi1_pads[] = {
+	/* SS1 */
+	MX6Q_PAD_EIM_D19__GPIO_3_19   | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6Q_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6Q_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6Q_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
+};
+
+void setup_spi(void)
+{
+	gpio_direction_output(CONFIG_SF_DEFAULT_CS, 1);
+	imx_iomux_v3_setup_multiple_pads(ecspi1_pads,
+					 ARRAY_SIZE(ecspi1_pads));
+}
+#endif
+
+int board_phy_config(struct phy_device *phydev)
+{
+	/* min rx data delay */
+	ksz9021_phy_extended_write(phydev,
+			MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW, 0x0);
+	/* min tx data delay */
+	ksz9021_phy_extended_write(phydev,
+			MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW, 0x0);
+	/* max rx/tx clock delay, min rx/tx control */
+	ksz9021_phy_extended_write(phydev,
+			MII_KSZ9021_EXT_RGMII_CLOCK_SKEW, 0xf0f0);
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	int ret;
+
+	setup_iomux_enet();
+
+	ret = cpu_eth_init(bis);
+	if (ret)
+		printf("FEC MXC: %s:failed\n", __func__);
+
+	return 0;
+}
+
+static void setup_buttons(void)
+{
+	imx_iomux_v3_setup_multiple_pads(button_pads,
+					 ARRAY_SIZE(button_pads));
+}
+
+#ifdef CONFIG_CMD_SATA
+
+int setup_sata(void)
+{
+	struct iomuxc_base_regs *const iomuxc_regs
+		= (struct iomuxc_base_regs *) IOMUXC_BASE_ADDR;
+	int ret = enable_sata_clock();
+	if (ret)
+		return ret;
+
+	clrsetbits_le32(&iomuxc_regs->gpr[13],
+			IOMUXC_GPR13_SATA_MASK,
+			IOMUXC_GPR13_SATA_PHY_8_RXEQ_3P0DB
+			|IOMUXC_GPR13_SATA_PHY_7_SATA2M
+			|IOMUXC_GPR13_SATA_SPEED_3G
+			|(3<<IOMUXC_GPR13_SATA_PHY_6_SHIFT)
+			|IOMUXC_GPR13_SATA_SATA_PHY_5_SS_DISABLED
+			|IOMUXC_GPR13_SATA_SATA_PHY_4_ATTEN_9_16
+			|IOMUXC_GPR13_SATA_PHY_3_TXBOOST_0P00_DB
+			|IOMUXC_GPR13_SATA_PHY_2_TX_1P104V
+			|IOMUXC_GPR13_SATA_PHY_1_SLOW);
+
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_VIDEO_IPUV3)
+
+static iomux_v3_cfg_t const backlight_pads[] = {
+	/* Backlight on RGB connector: J15 */
+	MX6Q_PAD_SD1_DAT3__GPIO_1_21 | MUX_PAD_CTRL(NO_PAD_CTRL),
+#define RGB_BACKLIGHT_GP IMX_GPIO_NR(1, 21)
+
+	/* Backlight on LVDS connector: J6 */
+	MX6Q_PAD_SD1_CMD__GPIO_1_18 | MUX_PAD_CTRL(NO_PAD_CTRL),
+#define LVDS_BACKLIGHT_GP IMX_GPIO_NR(1, 18)
+};
+
+static iomux_v3_cfg_t const rgb_pads[] = {
+	MX6Q_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
+	MX6Q_PAD_DI0_PIN15__IPU1_DI0_PIN15,
+	MX6Q_PAD_DI0_PIN2__IPU1_DI0_PIN2,
+	MX6Q_PAD_DI0_PIN3__IPU1_DI0_PIN3,
+	MX6Q_PAD_DI0_PIN4__GPIO_4_20,
+	MX6Q_PAD_DISP0_DAT0__IPU1_DISP0_DAT_0,
+	MX6Q_PAD_DISP0_DAT1__IPU1_DISP0_DAT_1,
+	MX6Q_PAD_DISP0_DAT2__IPU1_DISP0_DAT_2,
+	MX6Q_PAD_DISP0_DAT3__IPU1_DISP0_DAT_3,
+	MX6Q_PAD_DISP0_DAT4__IPU1_DISP0_DAT_4,
+	MX6Q_PAD_DISP0_DAT5__IPU1_DISP0_DAT_5,
+	MX6Q_PAD_DISP0_DAT6__IPU1_DISP0_DAT_6,
+	MX6Q_PAD_DISP0_DAT7__IPU1_DISP0_DAT_7,
+	MX6Q_PAD_DISP0_DAT8__IPU1_DISP0_DAT_8,
+	MX6Q_PAD_DISP0_DAT9__IPU1_DISP0_DAT_9,
+	MX6Q_PAD_DISP0_DAT10__IPU1_DISP0_DAT_10,
+	MX6Q_PAD_DISP0_DAT11__IPU1_DISP0_DAT_11,
+	MX6Q_PAD_DISP0_DAT12__IPU1_DISP0_DAT_12,
+	MX6Q_PAD_DISP0_DAT13__IPU1_DISP0_DAT_13,
+	MX6Q_PAD_DISP0_DAT14__IPU1_DISP0_DAT_14,
+	MX6Q_PAD_DISP0_DAT15__IPU1_DISP0_DAT_15,
+	MX6Q_PAD_DISP0_DAT16__IPU1_DISP0_DAT_16,
+	MX6Q_PAD_DISP0_DAT17__IPU1_DISP0_DAT_17,
+	MX6Q_PAD_DISP0_DAT18__IPU1_DISP0_DAT_18,
+	MX6Q_PAD_DISP0_DAT19__IPU1_DISP0_DAT_19,
+	MX6Q_PAD_DISP0_DAT20__IPU1_DISP0_DAT_20,
+	MX6Q_PAD_DISP0_DAT21__IPU1_DISP0_DAT_21,
+	MX6Q_PAD_DISP0_DAT22__IPU1_DISP0_DAT_22,
+	MX6Q_PAD_DISP0_DAT23__IPU1_DISP0_DAT_23,
+};
+
+struct display_info_t {
+	int	bus;
+	int	addr;
+	int	pixfmt;
+	int	(*detect)(struct display_info_t const *dev);
+	void	(*enable)(struct display_info_t const *dev);
+	struct	fb_videomode mode;
+};
+
+
+static int detect_hdmi(struct display_info_t const *dev)
+{
+	return __raw_readb(HDMI_ARB_BASE_ADDR+HDMI_PHY_STAT0) & HDMI_PHY_HPD;
+}
+
+static void enable_hdmi(struct display_info_t const *dev)
+{
+	u8 reg;
+	printf("%s: setup HDMI monitor\n", __func__);
+	reg = __raw_readb(
+			HDMI_ARB_BASE_ADDR
+			+HDMI_PHY_CONF0);
+	reg |= HDMI_PHY_CONF0_PDZ_MASK;
+	__raw_writeb(reg,
+		     HDMI_ARB_BASE_ADDR
+			+HDMI_PHY_CONF0);
+	udelay(3000);
+	reg |= HDMI_PHY_CONF0_ENTMDS_MASK;
+	__raw_writeb(reg,
+		     HDMI_ARB_BASE_ADDR
+			+HDMI_PHY_CONF0);
+	udelay(3000);
+	reg |= HDMI_PHY_CONF0_GEN2_TXPWRON_MASK;
+	__raw_writeb(reg,
+		     HDMI_ARB_BASE_ADDR
+			+HDMI_PHY_CONF0);
+	__raw_writeb(HDMI_MC_PHYRSTZ_ASSERT,
+		     HDMI_ARB_BASE_ADDR+HDMI_MC_PHYRSTZ);
+}
+
+static int detect_i2c(struct display_info_t const *dev)
+{
+	return ((0 == i2c_set_bus_num(dev->bus))
+		&&
+		(0 == i2c_probe(dev->addr)));
+}
+
+static void enable_lvds(struct display_info_t const *dev)
+{
+	struct iomuxc *iomux = (struct iomuxc *)
+				IOMUXC_BASE_ADDR;
+	u32 reg = readl(&iomux->gpr[2]);
+	reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
+	writel(reg, &iomux->gpr[2]);
+	gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
+}
+
+static void enable_rgb(struct display_info_t const *dev)
+{
+	imx_iomux_v3_setup_multiple_pads(
+		rgb_pads,
+		 ARRAY_SIZE(rgb_pads));
+	gpio_direction_output(RGB_BACKLIGHT_GP, 1);
+}
+
+static struct display_info_t const displays[] = {{
+	.bus	= -1,
+	.addr	= 0,
+	.pixfmt	= IPU_PIX_FMT_RGB24,
+	.detect	= detect_hdmi,
+	.enable	= enable_hdmi,
+	.mode	= {
+		.name           = "HDMI",
+		.refresh        = 60,
+		.xres           = 1024,
+		.yres           = 768,
+		.pixclock       = 15385,
+		.left_margin    = 220,
+		.right_margin   = 40,
+		.upper_margin   = 21,
+		.lower_margin   = 7,
+		.hsync_len      = 60,
+		.vsync_len      = 10,
+		.sync           = FB_SYNC_EXT,
+		.vmode          = FB_VMODE_NONINTERLACED
+} }, {
+	.bus	= 2,
+	.addr	= 0x4,
+	.pixfmt	= IPU_PIX_FMT_LVDS666,
+	.detect	= detect_i2c,
+	.enable	= enable_lvds,
+	.mode	= {
+		.name           = "Hannstar-XGA",
+		.refresh        = 60,
+		.xres           = 1024,
+		.yres           = 768,
+		.pixclock       = 15385,
+		.left_margin    = 220,
+		.right_margin   = 40,
+		.upper_margin   = 21,
+		.lower_margin   = 7,
+		.hsync_len      = 60,
+		.vsync_len      = 10,
+		.sync           = FB_SYNC_EXT,
+		.vmode          = FB_VMODE_NONINTERLACED
+} }, {
+	.bus	= 2,
+	.addr	= 0x38,
+	.pixfmt	= IPU_PIX_FMT_LVDS666,
+	.detect	= detect_i2c,
+	.enable	= enable_lvds,
+	.mode	= {
+		.name           = "wsvga-lvds",
+		.refresh        = 60,
+		.xres           = 1024,
+		.yres           = 600,
+		.pixclock       = 15385,
+		.left_margin    = 220,
+		.right_margin   = 40,
+		.upper_margin   = 21,
+		.lower_margin   = 7,
+		.hsync_len      = 60,
+		.vsync_len      = 10,
+		.sync           = FB_SYNC_EXT,
+		.vmode          = FB_VMODE_NONINTERLACED
+} }, {
+	.bus	= 2,
+	.addr	= 0x48,
+	.pixfmt	= IPU_PIX_FMT_RGB666,
+	.detect	= detect_i2c,
+	.enable	= enable_rgb,
+	.mode	= {
+		.name           = "wvga-rgb",
+		.refresh        = 57,
+		.xres           = 800,
+		.yres           = 480,
+		.pixclock       = 37037,
+		.left_margin    = 40,
+		.right_margin   = 60,
+		.upper_margin   = 10,
+		.lower_margin   = 10,
+		.hsync_len      = 20,
+		.vsync_len      = 10,
+		.sync           = 0,
+		.vmode          = FB_VMODE_NONINTERLACED
+} } };
+
+int board_video_skip(void)
+{
+	int i;
+	int ret;
+	char const *panel = getenv("panel");
+	if (!panel) {
+		for (i = 0; i < ARRAY_SIZE(displays); i++) {
+			struct display_info_t const *dev = displays+i;
+			if (dev->detect(dev)) {
+				panel = dev->mode.name;
+				printf("auto-detected panel %s\n", panel);
+				break;
+			}
+		}
+		if (!panel) {
+			panel = displays[0].mode.name;
+			printf("No panel detected: default to %s\n", panel);
+		}
+	} else {
+		for (i = 0; i < ARRAY_SIZE(displays); i++) {
+			if (!strcmp(panel, displays[i].mode.name))
+				break;
+		}
+	}
+	if (i < ARRAY_SIZE(displays)) {
+		ret = ipuv3_fb_init(&displays[i].mode, 0,
+				    displays[i].pixfmt);
+		if (!ret) {
+			displays[i].enable(displays+i);
+			printf("Display: %s (%ux%u)\n",
+			       displays[i].mode.name,
+			       displays[i].mode.xres,
+			       displays[i].mode.yres);
+		} else
+			printf("LCD %s cannot be configured: %d\n",
+			       displays[i].mode.name, ret);
+	} else {
+		printf("unsupported panel %s\n", panel);
+		ret = -EINVAL;
+	}
+	return (0 != ret);
+}
+
+static void setup_display(void)
+{
+	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+	struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+	int reg;
+
+	/* Turn on LDB0,IPU,IPU DI0 clocks */
+	reg = __raw_readl(&mxc_ccm->CCGR3);
+	reg |=   MXC_CCM_CCGR3_IPU1_IPU_DI0_OFFSET
+		|MXC_CCM_CCGR3_LDB_DI0_MASK;
+	writel(reg, &mxc_ccm->CCGR3);
+
+	/* Turn on HDMI PHY clock */
+	reg = __raw_readl(&mxc_ccm->CCGR2);
+	reg |=  MXC_CCM_CCGR2_HDMI_TX_IAHBCLK_MASK
+	       |MXC_CCM_CCGR2_HDMI_TX_ISFRCLK_MASK;
+	writel(reg, &mxc_ccm->CCGR2);
+
+	/* clear HDMI PHY reset */
+	__raw_writeb(HDMI_MC_PHYRSTZ_DEASSERT,
+		     HDMI_ARB_BASE_ADDR+HDMI_MC_PHYRSTZ);
+
+	/* set PFD1_FRAC to 0x13 == 455 MHz (480*18)/0x13 */
+	writel(ANATOP_PFD_480_PFD1_FRAC_MASK, &anatop->pfd_480_clr);
+	writel(0x13<<ANATOP_PFD_480_PFD1_FRAC_SHIFT, &anatop->pfd_480_set);
+
+	/* set LDB0, LDB1 clk select to 011/011 */
+	reg = readl(&mxc_ccm->cs2cdr);
+	reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
+		 |MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
+	reg |= (3<<MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
+	      |(3<<MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
+	writel(reg, &mxc_ccm->cs2cdr);
+
+	reg = readl(&mxc_ccm->cscmr2);
+	reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
+	writel(reg, &mxc_ccm->cscmr2);
+
+	reg = readl(&mxc_ccm->chsccdr);
+	reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK
+		|MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK
+		|MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
+	reg |= (CHSCCDR_CLK_SEL_LDB_DI0
+		<<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET)
+	      |(CHSCCDR_PODF_DIVIDE_BY_3
+		<<MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET)
+	      |(CHSCCDR_IPU_PRE_CLK_540M_PFD
+		<<MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET);
+	writel(reg, &mxc_ccm->chsccdr);
+
+	reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
+	     |IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
+	     |IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
+	     |IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
+	     |IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
+	     |IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
+	     |IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
+	     |IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
+	     |IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
+	writel(reg, &iomux->gpr[2]);
+
+	reg = readl(&iomux->gpr[3]);
+	reg = (reg & ~IOMUXC_GPR3_LVDS0_MUX_CTL_MASK)
+	    | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
+	       <<IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
+	writel(reg, &iomux->gpr[3]);
+
+	/* backlights off until needed */
+	imx_iomux_v3_setup_multiple_pads(backlight_pads,
+					 ARRAY_SIZE(backlight_pads));
+	gpio_direction_input(LVDS_BACKLIGHT_GP);
+	gpio_direction_input(RGB_BACKLIGHT_GP);
+}
+#endif
+
+int board_early_init_f(void)
+{
+	setup_iomux_uart();
+
+	/* Disable wl1271 For Nitrogen6w */
+	gpio_direction_input(WL12XX_WL_IRQ_GP);
+	gpio_direction_output(WL12XX_WL_ENABLE_GP, 0);
+	gpio_direction_output(WL12XX_BT_ENABLE_GP, 0);
+
+	imx_iomux_v3_setup_multiple_pads(wl12xx_pads, ARRAY_SIZE(wl12xx_pads));
+	setup_buttons();
+
+#if defined(CONFIG_VIDEO_IPUV3)
+	setup_display();
+#endif
+	return 0;
+}
+
+/*
+ * Do not overwrite the console
+ * Use always serial for U-Boot console
+ */
+int overwrite_console(void)
+{
+	return 1;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+#ifdef CONFIG_MXC_SPI
+	setup_spi();
+#endif
+	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
+	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
+	setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
+
+#ifdef CONFIG_CMD_SATA
+	setup_sata();
+#endif
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	if (gpio_get_value(WL12XX_WL_IRQ_GP))
+		puts("Board: Nitrogen6X\n");
+	else
+		puts("Board: SABRE Lite\n");
+
+	return 0;
+}
+
+struct button_key {
+	char const	*name;
+	unsigned	gpnum;
+	char		ident;
+};
+
+static struct button_key const buttons[] = {
+	{"back",	IMX_GPIO_NR(2, 2),	'B'},
+	{"home",	IMX_GPIO_NR(2, 4),	'H'},
+	{"menu",	IMX_GPIO_NR(2, 1),	'M'},
+	{"search",	IMX_GPIO_NR(2, 3),	'S'},
+	{"volup",	IMX_GPIO_NR(7, 13),	'V'},
+	{"voldown",	IMX_GPIO_NR(4, 5),	'v'},
+};
+
+/*
+ * generate a null-terminated string containing the buttons pressed
+ * returns number of keys pressed
+ */
+static int read_keys(char *buf)
+{
+	int i, numpressed = 0;
+	for (i = 0; i < ARRAY_SIZE(buttons); i++) {
+		if (!gpio_get_value(buttons[i].gpnum))
+			buf[numpressed++] = buttons[i].ident;
+	}
+	buf[numpressed] = '\0';
+	return numpressed;
+}
+
+static int do_kbd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	char envvalue[ARRAY_SIZE(buttons)+1];
+	int numpressed = read_keys(envvalue);
+	setenv("keybd", envvalue);
+	return numpressed == 0;
+}
+
+U_BOOT_CMD(
+	kbd, 1, 1, do_kbd,
+	"Tests for keypresses, sets 'keybd' environment variable",
+	"Returns 0 (true) to shell if key is pressed."
+);
+
+#ifdef CONFIG_PREBOOT
+static char const kbd_magic_prefix[] = "key_magic";
+static char const kbd_command_prefix[] = "key_cmd";
+
+static void preboot_keys(void)
+{
+	int numpressed;
+	char keypress[ARRAY_SIZE(buttons)+1];
+	numpressed = read_keys(keypress);
+	if (numpressed) {
+		char *kbd_magic_keys = getenv("magic_keys");
+		char *suffix;
+		/*
+		 * loop over all magic keys
+		 */
+		for (suffix = kbd_magic_keys; *suffix; ++suffix) {
+			char *keys;
+			char magic[sizeof(kbd_magic_prefix) + 1];
+			sprintf(magic, "%s%c", kbd_magic_prefix, *suffix);
+			keys = getenv(magic);
+			if (keys) {
+				if (!strcmp(keys, keypress))
+					break;
+			}
+		}
+		if (*suffix) {
+			char cmd_name[sizeof(kbd_command_prefix) + 1];
+			char *cmd;
+			sprintf(cmd_name, "%s%c", kbd_command_prefix, *suffix);
+			cmd = getenv(cmd_name);
+			if (cmd) {
+				setenv("preboot", cmd);
+				return;
+			}
+		}
+	}
+}
+#endif
+
+#ifdef CONFIG_CMD_BMODE
+static const struct boot_mode board_boot_modes[] = {
+	/* 4 bit bus width */
+	{"mmc0",	MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
+	{"mmc1",	MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
+	{NULL,		0},
+};
+#endif
+
+int misc_init_r(void)
+{
+#ifdef CONFIG_PREBOOT
+	preboot_keys();
+#endif
+
+#ifdef CONFIG_CMD_BMODE
+	add_board_boot_modes(board_boot_modes);
+#endif
+	return 0;
+}