MX51: Support for TTECH vision2 board

The patch adds support for TTECH vision2 board.
The board has 512MB RAM, SDHC slot and 4MB SPI
device from StMicron.

Signed-off-by: Stefano Babic <sbabic@denx.de>

1 files changed, 711 insertions, 0 deletions

diff --git a/board/ttcontrol/vision2/vision2.c b/board/ttcontrol/vision2/vision2.c
new file mode 100644
index 0000000..c991ee2
--- /dev/null
+++ b/board/ttcontrol/vision2/vision2.c
@@ -0,0 +1,711 @@
+/*
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
+ *
+ * (C) Copyright 2009 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/imx-regs.h>
+#include <asm/arch/mx51_pins.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/iomux.h>
+#include <mxc_gpio.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/errno.h>
+#include <i2c.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <fsl_pmic.h>
+#include <mc13892.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static u32 system_rev;
+
+#ifdef CONFIG_HW_WATCHDOG
+#include <watchdog.h>
+
+void hw_watchdog_reset(void)
+{
+	int val;
+
+	/* toggle watchdog trigger pin */
+	val = mxc_gpio_get(66);
+	val = val ? 0 : 1;
+	mxc_gpio_set(66, val);
+}
+#endif
+
+static void init_drive_strength(void)
+{
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_PKEDDR, PAD_CTL_DDR_INPUT_CMOS);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_PKEADDR, PAD_CTL_PKE_ENABLE);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDRAPKS, PAD_CTL_PUE_KEEPER);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDRAPUS, PAD_CTL_100K_PU);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_A1, PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_A0, PAD_CTL_DRV_HIGH);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_A1, PAD_CTL_DRV_HIGH);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_RAS,
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_CAS,
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_PKEDDR, PAD_CTL_PKE_ENABLE);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDRPKS, PAD_CTL_PUE_KEEPER);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_HYSDDR0, PAD_CTL_HYS_NONE);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_HYSDDR1, PAD_CTL_HYS_NONE);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_HYSDDR2, PAD_CTL_HYS_NONE);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_HYSDDR3, PAD_CTL_HYS_NONE);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_B0, PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_B1, PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_B2, PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_B4, PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDRPUS, PAD_CTL_100K_PU);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_INMODE1, PAD_CTL_DDR_INPUT_CMOS);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DRAM_B0, PAD_CTL_DRV_MEDIUM);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DRAM_B1, PAD_CTL_DRV_MEDIUM);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DRAM_B2, PAD_CTL_DRV_MEDIUM);
+	mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DRAM_B4, PAD_CTL_DRV_MEDIUM);
+
+	/* Setting pad options */
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDWE,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDCKE0,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDCKE1,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDCLK,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDQS0,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDQS1,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDQS2,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDQS3,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_CS0,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_CS1,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_DQM0,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_DQM1,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_DQM2,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_DQM3,
+		PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER |
+		PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST);
+}
+
+u32 get_board_rev(void)
+{
+	system_rev = get_cpu_rev();
+
+	return system_rev;
+}
+
+int dram_init(void)
+{
+#ifdef CONFIG_SYS_ARM_WITHOUT_RELOC
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = get_ram_size((long *)PHYS_SDRAM_1,
+		PHYS_SDRAM_1_SIZE);
+#if (CONFIG_NR_DRAM_BANKS > 1)
+	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+	gd->bd->bi_dram[1].size = get_ram_size((long *)PHYS_SDRAM_2,
+		PHYS_SDRAM_2_SIZE);
+#endif
+#else
+	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1,
+		PHYS_SDRAM_1_SIZE);
+#endif
+
+	return 0;
+}
+
+static void setup_weim(void)
+{
+	struct weim  *pweim = (struct weim *)WEIM_BASE_ADDR;
+
+	pweim->csgcr1 = 0x004100b9;
+	pweim->csgcr2 = 0x00000001;
+	pweim->csrcr1 = 0x0a018000;
+	pweim->csrcr2 = 0;
+	pweim->cswcr1 = 0x0704a240;
+}
+
+static void setup_uart(void)
+{
+	unsigned int pad = PAD_CTL_HYS_ENABLE | PAD_CTL_PKE_ENABLE |
+			 PAD_CTL_PUE_PULL | PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST;
+	/* console RX on Pin EIM_D25 */
+	mxc_request_iomux(MX51_PIN_EIM_D25, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_D25, pad);
+	/* console TX on Pin EIM_D26 */
+	mxc_request_iomux(MX51_PIN_EIM_D26, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_D26, pad);
+}
+
+#ifdef CONFIG_MXC_SPI
+void spi_io_init(void)
+{
+	/* 000: Select mux mode: ALT0 mux port: MOSI of instance: ecspi1 */
+	mxc_request_iomux(MX51_PIN_CSPI1_MOSI, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_CSPI1_MOSI,
+		PAD_CTL_HYS_ENABLE | PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
+
+	/* 000: Select mux mode: ALT0 mux port: MISO of instance: ecspi1. */
+	mxc_request_iomux(MX51_PIN_CSPI1_MISO, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_CSPI1_MISO,
+		PAD_CTL_HYS_ENABLE | PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
+
+	/* 000: Select mux mode: ALT0 mux port: SS0 of instance: ecspi1. */
+	mxc_request_iomux(MX51_PIN_CSPI1_SS0, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_CSPI1_SS0,
+		PAD_CTL_HYS_ENABLE | PAD_CTL_PKE_ENABLE |
+		PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
+
+	/*
+	 * SS1 will be used as GPIO because of uninterrupted
+	 * long SPI transmissions (GPIO4_25)
+	 */
+	mxc_request_iomux(MX51_PIN_CSPI1_SS1, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_CSPI1_SS1,
+		PAD_CTL_HYS_ENABLE | PAD_CTL_PKE_ENABLE |
+		PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
+
+	/* 000: Select mux mode: ALT0 mux port: SS2 of instance: ecspi1. */
+	mxc_request_iomux(MX51_PIN_DI1_PIN11, IOMUX_CONFIG_ALT7);
+	mxc_iomux_set_pad(MX51_PIN_DI1_PIN11,
+		PAD_CTL_HYS_ENABLE | PAD_CTL_PKE_ENABLE |
+		PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
+
+	/* 000: Select mux mode: ALT0 mux port: SCLK of instance: ecspi1. */
+	mxc_request_iomux(MX51_PIN_CSPI1_SCLK, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_CSPI1_SCLK,
+		PAD_CTL_HYS_ENABLE | PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
+}
+
+static void reset_peripherals(int reset)
+{
+	if (reset) {
+
+		/* reset_n is on NANDF_D15 */
+		mxc_gpio_set(89, 0);
+		mxc_gpio_direction(89, MXC_GPIO_DIRECTION_OUT);
+
+#ifdef CONFIG_VISION2_HW_1_0
+		/*
+		 * set FEC Configuration lines
+		 * set levels of FEC config lines
+		 */
+		mxc_gpio_set(75, 0);
+		mxc_gpio_set(74, 1);
+		mxc_gpio_set(95, 1);
+		mxc_gpio_direction(75, MXC_GPIO_DIRECTION_OUT);
+		mxc_gpio_direction(74, MXC_GPIO_DIRECTION_OUT);
+		mxc_gpio_direction(95, MXC_GPIO_DIRECTION_OUT);
+
+		/* set direction of FEC config lines */
+		mxc_gpio_set(59, 0);
+		mxc_gpio_set(60, 0);
+		mxc_gpio_set(61, 0);
+		mxc_gpio_set(55, 1);
+		mxc_gpio_direction(59, MXC_GPIO_DIRECTION_OUT);
+		mxc_gpio_direction(60, MXC_GPIO_DIRECTION_OUT);
+		mxc_gpio_direction(61, MXC_GPIO_DIRECTION_OUT);
+		mxc_gpio_direction(55, MXC_GPIO_DIRECTION_OUT);
+
+		/* FEC_RXD1 - sel GPIO (2-23) for configuration -> 1 */
+		mxc_request_iomux(MX51_PIN_EIM_EB3, IOMUX_CONFIG_ALT1);
+		/* FEC_RXD2 - sel GPIO (2-27) for configuration -> 0 */
+		mxc_request_iomux(MX51_PIN_EIM_CS2, IOMUX_CONFIG_ALT1);
+		/* FEC_RXD3 - sel GPIO (2-28) for configuration -> 0 */
+		mxc_request_iomux(MX51_PIN_EIM_CS3, IOMUX_CONFIG_ALT1);
+		/* FEC_RXER - sel GPIO (2-29) for configuration -> 0 */
+		mxc_request_iomux(MX51_PIN_EIM_CS4, IOMUX_CONFIG_ALT1);
+		/* FEC_COL  - sel GPIO (3-10) for configuration -> 1 */
+		mxc_request_iomux(MX51_PIN_NANDF_RB2, IOMUX_CONFIG_ALT3);
+		/* FEC_RCLK - sel GPIO (3-11) for configuration -> 0 */
+		mxc_request_iomux(MX51_PIN_NANDF_RB3, IOMUX_CONFIG_ALT3);
+		/* FEC_RXD0 - sel GPIO (3-31) for configuration -> 1 */
+		mxc_request_iomux(MX51_PIN_NANDF_D9, IOMUX_CONFIG_ALT3);
+#endif
+
+		/*
+		 * activate reset_n pin
+		 * Select mux mode: ALT3 mux port: NAND D15
+		 */
+		mxc_request_iomux(MX51_PIN_NANDF_D15, IOMUX_CONFIG_ALT3);
+		mxc_iomux_set_pad(MX51_PIN_NANDF_D15,
+			PAD_CTL_DRV_VOT_HIGH | PAD_CTL_DRV_MAX);
+	} else {
+		/* set FEC Control lines */
+		mxc_gpio_direction(89, MXC_GPIO_DIRECTION_IN);
+		udelay(500);
+
+#ifdef CONFIG_VISION2_HW_1_0
+		/* FEC RDATA[3] */
+		mxc_request_iomux(MX51_PIN_EIM_CS3, IOMUX_CONFIG_ALT3);
+		mxc_iomux_set_pad(MX51_PIN_EIM_CS3, 0x180);
+
+		/* FEC RDATA[2] */
+		mxc_request_iomux(MX51_PIN_EIM_CS2, IOMUX_CONFIG_ALT3);
+		mxc_iomux_set_pad(MX51_PIN_EIM_CS2, 0x180);
+
+		/* FEC RDATA[1] */
+		mxc_request_iomux(MX51_PIN_EIM_EB3, IOMUX_CONFIG_ALT3);
+		mxc_iomux_set_pad(MX51_PIN_EIM_EB3, 0x180);
+
+		/* FEC RDATA[0] */
+		mxc_request_iomux(MX51_PIN_NANDF_D9, IOMUX_CONFIG_ALT2);
+		mxc_iomux_set_pad(MX51_PIN_NANDF_D9, 0x2180);
+
+		/* FEC RX_CLK */
+		mxc_request_iomux(MX51_PIN_NANDF_RB3, IOMUX_CONFIG_ALT1);
+		mxc_iomux_set_pad(MX51_PIN_NANDF_RB3, 0x2180);
+
+		/* FEC RX_ER */
+		mxc_request_iomux(MX51_PIN_EIM_CS4, IOMUX_CONFIG_ALT3);
+		mxc_iomux_set_pad(MX51_PIN_EIM_CS4, 0x180);
+
+		/* FEC COL */
+		mxc_request_iomux(MX51_PIN_NANDF_RB2, IOMUX_CONFIG_ALT1);
+		mxc_iomux_set_pad(MX51_PIN_NANDF_RB2, 0x2180);
+#endif
+	}
+}
+
+static void power_init_mx51(void)
+{
+	unsigned int val;
+
+	/* Write needed to Power Gate 2 register */
+	val = pmic_reg_read(REG_POWER_MISC);
+
+	/* enable VCAM with 2.775V to enable read from PMIC */
+	val = VCAMCONFIG | VCAMEN;
+	pmic_reg_write(REG_MODE_1, val);
+
+	/*
+	 * Set switchers in Auto in NORMAL mode & STANDBY mode
+	 * Setup the switcher mode for SW1 & SW2
+	 */
+	val = pmic_reg_read(REG_SW_4);
+	val = (val & ~((SWMODE_MASK << SWMODE1_SHIFT) |
+		(SWMODE_MASK << SWMODE2_SHIFT)));
+	val |= (SWMODE_AUTO_AUTO << SWMODE1_SHIFT) |
+		(SWMODE_AUTO_AUTO << SWMODE2_SHIFT);
+	pmic_reg_write(REG_SW_4, val);
+
+	/* Setup the switcher mode for SW3 & SW4 */
+	val = pmic_reg_read(REG_SW_5);
+	val &= ~((SWMODE_MASK << SWMODE4_SHIFT) |
+		(SWMODE_MASK << SWMODE3_SHIFT));
+	val |= (SWMODE_AUTO_AUTO << SWMODE4_SHIFT) |
+		(SWMODE_AUTO_AUTO << SWMODE3_SHIFT);
+	pmic_reg_write(REG_SW_5, val);
+
+
+	/* Set VGEN3 to 1.8V, VCAM to 3.0V */
+	val = pmic_reg_read(REG_SETTING_0);
+	val &= ~(VCAM_MASK | VGEN3_MASK);
+	val |= VCAM_3_0;
+	pmic_reg_write(REG_SETTING_0, val);
+
+	/* Set VVIDEO to 2.775V, VAUDIO to 3V0, VSD to 1.8V */
+	val = pmic_reg_read(REG_SETTING_1);
+	val &= ~(VVIDEO_MASK | VSD_MASK | VAUDIO_MASK);
+	val |= VVIDEO_2_775 | VAUDIO_3_0 | VSD_1_8;
+	pmic_reg_write(REG_SETTING_1, val);
+
+	/* Configure VGEN3 and VCAM regulators to use external PNP */
+	val = VGEN3CONFIG | VCAMCONFIG;
+	pmic_reg_write(REG_MODE_1, val);
+	udelay(200);
+
+	/* Enable VGEN3, VCAM, VAUDIO, VVIDEO, VSD regulators */
+	val = VGEN3EN | VGEN3CONFIG | VCAMEN | VCAMCONFIG |
+		VVIDEOEN | VAUDIOEN  | VSDEN;
+	pmic_reg_write(REG_MODE_1, val);
+
+	val = pmic_reg_read(REG_POWER_CTL2);
+	val |= WDIRESET;
+	pmic_reg_write(REG_POWER_CTL2, val);
+
+	udelay(2500);
+
+}
+#endif
+
+static void setup_gpios(void)
+{
+	unsigned int i;
+
+	/* CAM_SUP_DISn, GPIO1_7 */
+	mxc_request_iomux(MX51_PIN_GPIO1_7, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_GPIO1_7, 0x82);
+
+	/* DAB Display EN, GPIO3_1 */
+	mxc_request_iomux(MX51_PIN_DI1_PIN12, IOMUX_CONFIG_ALT4);
+	mxc_iomux_set_pad(MX51_PIN_DI1_PIN12, 0x82);
+
+	/* WDOG_TRIGGER, GPIO3_2 */
+	mxc_request_iomux(MX51_PIN_DI1_PIN13, IOMUX_CONFIG_ALT4);
+	mxc_iomux_set_pad(MX51_PIN_DI1_PIN13, 0x82);
+
+	/* Now we need to trigger the watchdog */
+	WATCHDOG_RESET();
+
+	/* Display2 TxEN, GPIO3_3 */
+	mxc_request_iomux(MX51_PIN_DI1_D0_CS, IOMUX_CONFIG_ALT4);
+	mxc_iomux_set_pad(MX51_PIN_DI1_D0_CS, 0x82);
+
+	/* DAB Light EN, GPIO3_4 */
+	mxc_request_iomux(MX51_PIN_DI1_D1_CS, IOMUX_CONFIG_ALT4);
+	mxc_iomux_set_pad(MX51_PIN_DI1_D1_CS, 0x82);
+
+	/* AUDIO_MUTE, GPIO3_5 */
+	mxc_request_iomux(MX51_PIN_DISPB2_SER_DIN, IOMUX_CONFIG_ALT4);
+	mxc_iomux_set_pad(MX51_PIN_DISPB2_SER_DIN, 0x82);
+
+	/* SPARE_OUT, GPIO3_6 */
+	mxc_request_iomux(MX51_PIN_DISPB2_SER_DIO, IOMUX_CONFIG_ALT4);
+	mxc_iomux_set_pad(MX51_PIN_DISPB2_SER_DIO, 0x82);
+
+	/* BEEPER_EN, GPIO3_26 */
+	mxc_request_iomux(MX51_PIN_NANDF_D14, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_D14, 0x82);
+
+	/* POWER_OFF, GPIO3_27 */
+	mxc_request_iomux(MX51_PIN_NANDF_D13, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_D13, 0x82);
+
+	/* FRAM_WE, GPIO3_30 */
+	mxc_request_iomux(MX51_PIN_NANDF_D10, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_D10, 0x82);
+
+	/* EXPANSION_EN, GPIO4_26 */
+	mxc_request_iomux(MX51_PIN_CSPI1_RDY, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_CSPI1_RDY, 0x82);
+
+	/*
+	 * Set GPIO1_4 to high and output; it is used to reset
+	 * the system on reboot
+	 */
+	mxc_gpio_set(4, 1);
+	mxc_gpio_direction(4, MXC_GPIO_DIRECTION_OUT);
+
+	mxc_gpio_set(7, 0);
+	mxc_gpio_direction(7, MXC_GPIO_DIRECTION_OUT);
+	for (i = 65; i < 71; i++) {
+		mxc_gpio_set(i, 0);
+		mxc_gpio_direction(i, MXC_GPIO_DIRECTION_OUT);
+	}
+
+	mxc_gpio_set(94, 0);
+	mxc_gpio_direction(94, MXC_GPIO_DIRECTION_OUT);
+
+	/* Set POWER_OFF high */
+	mxc_gpio_set(91, 1);
+	mxc_gpio_direction(91, MXC_GPIO_DIRECTION_OUT);
+
+	mxc_gpio_set(90, 0);
+	mxc_gpio_direction(90, MXC_GPIO_DIRECTION_OUT);
+
+	mxc_gpio_set(122, 0);
+	mxc_gpio_direction(122, MXC_GPIO_DIRECTION_OUT);
+
+	mxc_gpio_set(121, 1);
+	mxc_gpio_direction(121, MXC_GPIO_DIRECTION_OUT);
+
+	WATCHDOG_RESET();
+}
+
+static void setup_fec(void)
+{
+	/*FEC_MDIO*/
+	mxc_request_iomux(MX51_PIN_EIM_EB2, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_EB2, 0x1FD);
+
+	/*FEC_MDC*/
+	mxc_request_iomux(MX51_PIN_NANDF_CS3, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS3, 0x2004);
+
+	/* FEC RDATA[3] */
+	mxc_request_iomux(MX51_PIN_EIM_CS3, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_CS3, 0x180);
+
+	/* FEC RDATA[2] */
+	mxc_request_iomux(MX51_PIN_EIM_CS2, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_CS2, 0x180);
+
+	/* FEC RDATA[1] */
+	mxc_request_iomux(MX51_PIN_EIM_EB3, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_EB3, 0x180);
+
+	/* FEC RDATA[0] */
+	mxc_request_iomux(MX51_PIN_NANDF_D9, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_D9, 0x2180);
+
+	/* FEC TDATA[3] */
+	mxc_request_iomux(MX51_PIN_NANDF_CS6, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS6, 0x2004);
+
+	/* FEC TDATA[2] */
+	mxc_request_iomux(MX51_PIN_NANDF_CS5, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS5, 0x2004);
+
+	/* FEC TDATA[1] */
+	mxc_request_iomux(MX51_PIN_NANDF_CS4, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS4, 0x2004);
+
+	/* FEC TDATA[0] */
+	mxc_request_iomux(MX51_PIN_NANDF_D8, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_D8, 0x2004);
+
+	/* FEC TX_EN */
+	mxc_request_iomux(MX51_PIN_NANDF_CS7, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS7, 0x2004);
+
+	/* FEC TX_ER */
+	mxc_request_iomux(MX51_PIN_NANDF_CS2, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS2, 0x2004);
+
+	/* FEC TX_CLK */
+	mxc_request_iomux(MX51_PIN_NANDF_RDY_INT, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_RDY_INT, 0x2180);
+
+	/* FEC TX_COL */
+	mxc_request_iomux(MX51_PIN_NANDF_RB2, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_RB2, 0x2180);
+
+	/* FEC RX_CLK */
+	mxc_request_iomux(MX51_PIN_NANDF_RB3, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_RB3, 0x2180);
+
+	/* FEC RX_CRS */
+	mxc_request_iomux(MX51_PIN_EIM_CS5, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_CS5, 0x180);
+
+	/* FEC RX_ER */
+	mxc_request_iomux(MX51_PIN_EIM_CS4, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_CS4, 0x180);
+
+	/* FEC RX_DV */
+	mxc_request_iomux(MX51_PIN_NANDF_D11, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_D11, 0x2180);
+}
+
+struct fsl_esdhc_cfg esdhc_cfg[1] = {
+	{MMC_SDHC1_BASE_ADDR, 1},
+};
+
+int get_mmc_getcd(u8 *cd, struct mmc *mmc)
+{
+	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+
+	if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
+		*cd = mxc_gpio_get(0);
+	else
+		*cd = 0;
+
+	return 0;
+}
+
+#ifdef CONFIG_FSL_ESDHC
+int board_mmc_init(bd_t *bis)
+{
+	mxc_request_iomux(MX51_PIN_SD1_CMD,
+		IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+	mxc_request_iomux(MX51_PIN_SD1_CLK,
+		IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+	mxc_request_iomux(MX51_PIN_SD1_DATA0,
+		IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+	mxc_request_iomux(MX51_PIN_SD1_DATA1,
+		IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+	mxc_request_iomux(MX51_PIN_SD1_DATA2,
+		IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+	mxc_request_iomux(MX51_PIN_SD1_DATA3,
+		IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+	mxc_iomux_set_pad(MX51_PIN_SD1_CMD,
+		PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+		PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
+		PAD_CTL_PUE_PULL |
+		PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_SD1_CLK,
+		PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+		PAD_CTL_HYS_NONE | PAD_CTL_47K_PU |
+		PAD_CTL_PUE_PULL |
+		PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_SD1_DATA0,
+		PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+		PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
+		PAD_CTL_PUE_PULL |
+		PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_SD1_DATA1,
+		PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+		PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
+		PAD_CTL_PUE_PULL |
+		PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_SD1_DATA2,
+		PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+		PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
+		PAD_CTL_PUE_PULL |
+		PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+	mxc_iomux_set_pad(MX51_PIN_SD1_DATA3,
+		PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+		PAD_CTL_HYS_ENABLE | PAD_CTL_100K_PD |
+		PAD_CTL_PUE_PULL |
+		PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+	mxc_request_iomux(MX51_PIN_GPIO1_0,
+		IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+	mxc_iomux_set_pad(MX51_PIN_GPIO1_0,
+		PAD_CTL_HYS_ENABLE);
+	mxc_request_iomux(MX51_PIN_GPIO1_1,
+		IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+	mxc_iomux_set_pad(MX51_PIN_GPIO1_1,
+		PAD_CTL_HYS_ENABLE);
+
+	return fsl_esdhc_initialize(bis, &esdhc_cfg[0]);
+}
+#endif
+
+int board_early_init_f(void)
+{
+
+
+	init_drive_strength();
+
+	/* Setup debug led */
+	mxc_gpio_set(6, 0);
+	mxc_gpio_direction(6, MXC_GPIO_DIRECTION_OUT);
+	mxc_request_iomux(MX51_PIN_GPIO1_6, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_GPIO1_6, PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
+
+	/* wait a little while to give the pll time to settle */
+	sdelay(100000);
+
+	setup_weim();
+	setup_uart();
+	setup_fec();
+	setup_gpios();
+
+	spi_io_init();
+
+	return 0;
+}
+
+int board_init(void)
+{
+#ifdef CONFIG_SYS_ARM_WITHOUT_RELOC
+	board_early_init_f();
+#endif
+	gd->bd->bi_arch_number = MACH_TYPE_TTC_VISION2;	/* board id for linux */
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	return 0;
+}
+
+int board_late_init(void)
+{
+	power_init_mx51();
+
+	reset_peripherals(1);
+	udelay(2000);
+	reset_peripherals(0);
+	udelay(2000);
+
+	/* Early revisions require a second reset */
+#ifdef CONFIG_VISION2_HW_1_0
+	reset_peripherals(1);
+	udelay(2000);
+	reset_peripherals(0);
+	udelay(2000);
+#endif
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	u32 system_rev = get_cpu_rev();
+	u32 cause;
+	struct src *src_regs = (struct src *)SRC_BASE_ADDR;
+
+	puts("Board: TTControl Vision II CPU V");
+
+	switch (system_rev & 0xff) {
+	case CHIP_REV_3_0:
+		puts("3.0 [");
+		break;
+	case CHIP_REV_2_5:
+		puts("2.5 [");
+		break;
+	case CHIP_REV_2_0:
+		puts("2.0 [");
+		break;
+	case CHIP_REV_1_1:
+		puts("1.1 [");
+		break;
+	case CHIP_REV_1_0:
+	default:
+		puts("1.0 [");
+		break;
+	}
+
+	cause = src_regs->srsr;
+	switch (cause) {
+	case 0x0001:
+		puts("POR");
+		break;
+	case 0x0009:
+		puts("RST");
+		break;
+	case 0x0010:
+	case 0x0011:
+		puts("WDOG");
+		break;
+	default:
+		printf("unknown 0x%x", cause);
+	}
+	puts("]\n");
+
+	return 0;
+}
+