arch/arm/mach-mx3/mach-mx31_3ds.c - nest-cam/v179/linux - Git at Google

 /*
  *  Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
  *
  * 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.
  */

 #include <linux/delay.h>
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/clk.h>
 #include <linux/irq.h>
 #include <linux/gpio.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/mc13783.h>
 #include <linux/spi/spi.h>
 #include <linux/regulator/machine.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/ulpi.h>

 #include <mach/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
 #include <asm/memory.h>
 #include <asm/mach/map.h>
 #include <mach/common.h>
 #include <mach/iomux-mx3.h>
 #include <mach/3ds_debugboard.h>
 #include <mach/ulpi.h>

 #include "devices-imx31.h"
 #include "devices.h"

 /* CPLD IRQ line for external uart, external ethernet etc */
 #define EXPIO_PARENT_INT	IOMUX_TO_IRQ(MX31_PIN_GPIO1_1)

 /*
  * This file contains the board-specific initialization routines.
  */

 static int mx31_3ds_pins[] = {
 	/* UART1 */
 	MX31_PIN_CTS1__CTS1,
 	MX31_PIN_RTS1__RTS1,
 	MX31_PIN_TXD1__TXD1,
 	MX31_PIN_RXD1__RXD1,
 	IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
 	/* SPI 1 */
 	MX31_PIN_CSPI2_SCLK__SCLK,
 	MX31_PIN_CSPI2_MOSI__MOSI,
 	MX31_PIN_CSPI2_MISO__MISO,
 	MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
 	MX31_PIN_CSPI2_SS0__SS0,
 	MX31_PIN_CSPI2_SS2__SS2, /*CS for MC13783 */
 	/* MC13783 IRQ */
 	IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
 	/* USB OTG reset */
 	IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
 	/* USB OTG */
 	MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
 	MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
 	MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
 	MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
 	MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
 	MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
 	MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
 	MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
 	MX31_PIN_USBOTG_CLK__USBOTG_CLK,
 	MX31_PIN_USBOTG_DIR__USBOTG_DIR,
 	MX31_PIN_USBOTG_NXT__USBOTG_NXT,
 	MX31_PIN_USBOTG_STP__USBOTG_STP,
 	/*Keyboard*/
 	MX31_PIN_KEY_ROW0_KEY_ROW0,
 	MX31_PIN_KEY_ROW1_KEY_ROW1,
 	MX31_PIN_KEY_ROW2_KEY_ROW2,
 	MX31_PIN_KEY_COL0_KEY_COL0,
 	MX31_PIN_KEY_COL1_KEY_COL1,
 	MX31_PIN_KEY_COL2_KEY_COL2,
 	MX31_PIN_KEY_COL3_KEY_COL3,
 	/* USB Host 2 */
 	IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
 	IOMUX_MODE(MX31_PIN_PC_VS2, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_PC_BVD1, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_PC_BVD2, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_PC_RST, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_IOIS16, IOMUX_CONFIG_ALT1),
 	IOMUX_MODE(MX31_PIN_PC_RW_B, IOMUX_CONFIG_ALT1),
 	/* USB Host2 reset */
 	IOMUX_MODE(MX31_PIN_USB_BYP, IOMUX_CONFIG_GPIO),
 };

 /*
  * Matrix keyboard
  */

 static const uint32_t mx31_3ds_keymap[] = {
 	KEY(0, 0, KEY_UP),
 	KEY(0, 1, KEY_DOWN),
 	KEY(1, 0, KEY_RIGHT),
 	KEY(1, 1, KEY_LEFT),
 	KEY(1, 2, KEY_ENTER),
 	KEY(2, 0, KEY_F6),
 	KEY(2, 1, KEY_F8),
 	KEY(2, 2, KEY_F9),
 	KEY(2, 3, KEY_F10),
 };

 static const struct matrix_keymap_data mx31_3ds_keymap_data __initconst = {
 	.keymap		= mx31_3ds_keymap,
 	.keymap_size	= ARRAY_SIZE(mx31_3ds_keymap),
 };

 /* Regulators */
 static struct regulator_init_data pwgtx_init = {
 	.constraints = {
 		.boot_on	= 1,
 		.always_on	= 1,
 	},
 };

 static struct regulator_init_data gpo_init = {
 	.constraints = {
 		.boot_on = 1,
 		.always_on = 1,
 	}
 };

 static struct mc13783_regulator_init_data mx31_3ds_regulators[] = {
 	{
 		.id = MC13783_REG_PWGT1SPI, /* Power Gate for ARM core. */
 		.init_data = &pwgtx_init,
 	}, {
 		.id = MC13783_REG_PWGT2SPI, /* Power Gate for L2 Cache. */
 		.init_data = &pwgtx_init,
 	}, {

 		.id = MC13783_REG_GPO1, /* Turn on 1.8V */
 		.init_data = &gpo_init,
 	}, {
 		.id = MC13783_REG_GPO3, /* Turn on 3.3V */
 		.init_data = &gpo_init,
 	},
 };

 /* MC13783 */
 static struct mc13783_platform_data mc13783_pdata __initdata = {
 	.regulators = mx31_3ds_regulators,
 	.num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
 	.flags  = MC13783_USE_REGULATOR | MC13783_USE_TOUCHSCREEN,
 };

 /* SPI */
 static int spi1_internal_chipselect[] = {
 	MXC_SPI_CS(0),
 	MXC_SPI_CS(2),
 };

 static const struct spi_imx_master spi1_pdata __initconst = {
 	.chipselect	= spi1_internal_chipselect,
 	.num_chipselect	= ARRAY_SIZE(spi1_internal_chipselect),
 };

 static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
 	{
 		.modalias	= "mc13783",
 		.max_speed_hz	= 1000000,
 		.bus_num	= 1,
 		.chip_select	= 1, /* SS2 */
 		.platform_data	= &mc13783_pdata,
 		.irq		= IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
 		.mode = SPI_CS_HIGH,
 	},
 };

 /*
  * NAND Flash
  */
 static const struct mxc_nand_platform_data
 mx31_3ds_nand_board_info __initconst = {
 	.width		= 1,
 	.hw_ecc		= 1,
 #ifdef MACH_MX31_3DS_MXC_NAND_USE_BBT
 	.flash_bbt	= 1,
 #endif
 };

 /*
  * USB OTG
  */

 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 		     PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)

 #define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
 #define USBH2_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_BYP)

 static int mx31_3ds_usbotg_init(void)
 {
 	int err;

 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);

 	err = gpio_request(USBOTG_RST_B, "otgusb-reset");
 	if (err) {
 		pr_err("Failed to request the USB OTG reset gpio\n");
 		return err;
 	}

 	err = gpio_direction_output(USBOTG_RST_B, 0);
 	if (err) {
 		pr_err("Failed to drive the USB OTG reset gpio\n");
 		goto usbotg_free_reset;
 	}

 	mdelay(1);
 	gpio_set_value(USBOTG_RST_B, 1);
 	return 0;

 usbotg_free_reset:
 	gpio_free(USBOTG_RST_B);
 	return err;
 }

 static int mx31_3ds_host2_init(struct platform_device *pdev)
 {
 	int err;

 	mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_VS2, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_BVD1, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_BVD2, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_RST, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_IOIS16, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_PC_RW_B, USB_PAD_CFG);

 	err = gpio_request(USBH2_RST_B, "usbh2-reset");
 	if (err) {
 		pr_err("Failed to request the USB Host 2 reset gpio\n");
 		return err;
 	}

 	err = gpio_direction_output(USBH2_RST_B, 0);
 	if (err) {
 		pr_err("Failed to drive the USB Host 2 reset gpio\n");
 		goto usbotg_free_reset;
 	}

 	mdelay(1);
 	gpio_set_value(USBH2_RST_B, 1);
 	return 0;

 usbotg_free_reset:
 	gpio_free(USBH2_RST_B);
 	return err;
 }

 #if defined(CONFIG_USB_ULPI)
 static struct mxc_usbh_platform_data otg_pdata __initdata = {
 	.portsc	= MXC_EHCI_MODE_ULPI,
 	.flags	= MXC_EHCI_POWER_PINS_ENABLED,
 };

 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 	.init = mx31_3ds_host2_init,
 	.portsc	= MXC_EHCI_MODE_ULPI,
 	.flags	= MXC_EHCI_POWER_PINS_ENABLED,
 };
 #endif

 static const struct fsl_usb2_platform_data usbotg_pdata __initconst = {
 	.operating_mode = FSL_USB2_DR_DEVICE,
 	.phy_mode	= FSL_USB2_PHY_ULPI,
 };

 static int otg_mode_host;

 static int __init mx31_3ds_otg_mode(char *options)
 {
 	if (!strcmp(options, "host"))
 		otg_mode_host = 1;
 	else if (!strcmp(options, "device"))
 		otg_mode_host = 0;
 	else
 		pr_info("otg_mode neither \"host\" nor \"device\". "
 			"Defaulting to device\n");
 	return 0;
 }
 __setup("otg_mode=", mx31_3ds_otg_mode);

 static const struct imxuart_platform_data uart_pdata __initconst = {
 	.flags = IMXUART_HAVE_RTSCTS,
 };

 /*
  * Set up static virtual mappings.
  */
 static void __init mx31_3ds_map_io(void)
 {
 	mx31_map_io();
 }

 /*!
  * Board specific initialization.
  */
 static void __init mxc_board_init(void)
 {
 	mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
 				      "mx31_3ds");

 	imx31_add_imx_uart0(&uart_pdata);
 	imx31_add_mxc_nand(&mx31_3ds_nand_board_info);

 	imx31_add_spi_imx1(&spi1_pdata);
 	spi_register_board_info(mx31_3ds_spi_devs,
 						ARRAY_SIZE(mx31_3ds_spi_devs));

 	imx31_add_imx_keypad(&mx31_3ds_keymap_data);

 	mx31_3ds_usbotg_init();
 #if defined(CONFIG_USB_ULPI)
 	if (otg_mode_host) {
 		otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 				ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);

 		imx31_add_mxc_ehci_otg(&otg_pdata);
 	}
 	usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 				ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
 	imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
 #endif
 	if (!otg_mode_host)
 		imx31_add_fsl_usb2_udc(&usbotg_pdata);

 	if (mxc_expio_init(MX31_CS5_BASE_ADDR, EXPIO_PARENT_INT))
 		printk(KERN_WARNING "Init of the debug board failed, all "
 				    "devices on the debug board are unusable.\n");
 	imx31_add_imx2_wdt(NULL);
 }

 static void __init mx31_3ds_timer_init(void)
 {
 	mx31_clocks_init(26000000);
 }

 static struct sys_timer mx31_3ds_timer = {
 	.init	= mx31_3ds_timer_init,
 };

 /*
  * The following uses standard kernel macros defined in arch.h in order to
  * initialize __mach_desc_MX31_3DS data structure.
  */
 MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
 	/* Maintainer: Freescale Semiconductor, Inc. */
 	.boot_params    = MX3x_PHYS_OFFSET + 0x100,
 	.map_io         = mx31_3ds_map_io,
 	.init_irq       = mx31_init_irq,
 	.init_machine   = mxc_board_init,
 	.timer          = &mx31_3ds_timer,
 MACHINE_END
	/*
	* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
	*
	* 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.
	*/

	#include <linux/delay.h>
	#include <linux/types.h>
	#include <linux/init.h>
	#include <linux/clk.h>
	#include <linux/irq.h>
	#include <linux/gpio.h>
	#include <linux/platform_device.h>
	#include <linux/mfd/mc13783.h>
	#include <linux/spi/spi.h>
	#include <linux/regulator/machine.h>
	#include <linux/usb/otg.h>
	#include <linux/usb/ulpi.h>

	#include <mach/hardware.h>
	#include <asm/mach-types.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/time.h>
	#include <asm/memory.h>
	#include <asm/mach/map.h>
	#include <mach/common.h>
	#include <mach/iomux-mx3.h>
	#include <mach/3ds_debugboard.h>
	#include <mach/ulpi.h>

	#include "devices-imx31.h"
	#include "devices.h"

	/* CPLD IRQ line for external uart, external ethernet etc */
	#define EXPIO_PARENT_INT IOMUX_TO_IRQ(MX31_PIN_GPIO1_1)

	/*
	* This file contains the board-specific initialization routines.
	*/

	static int mx31_3ds_pins[] = {
	/* UART1 */
	MX31_PIN_CTS1__CTS1,
	MX31_PIN_RTS1__RTS1,
	MX31_PIN_TXD1__TXD1,
	MX31_PIN_RXD1__RXD1,
	IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
	/* SPI 1 */
	MX31_PIN_CSPI2_SCLK__SCLK,
	MX31_PIN_CSPI2_MOSI__MOSI,
	MX31_PIN_CSPI2_MISO__MISO,
	MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
	MX31_PIN_CSPI2_SS0__SS0,
	MX31_PIN_CSPI2_SS2__SS2, /CS for MC13783 /
	/* MC13783 IRQ */
	IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
	/* USB OTG reset */
	IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
	/* USB OTG */
	MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
	MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
	MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
	MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
	MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
	MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
	MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
	MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
	MX31_PIN_USBOTG_CLK__USBOTG_CLK,
	MX31_PIN_USBOTG_DIR__USBOTG_DIR,
	MX31_PIN_USBOTG_NXT__USBOTG_NXT,
	MX31_PIN_USBOTG_STP__USBOTG_STP,
	/Keyboard/
	MX31_PIN_KEY_ROW0_KEY_ROW0,
	MX31_PIN_KEY_ROW1_KEY_ROW1,
	MX31_PIN_KEY_ROW2_KEY_ROW2,
	MX31_PIN_KEY_COL0_KEY_COL0,
	MX31_PIN_KEY_COL1_KEY_COL1,
	MX31_PIN_KEY_COL2_KEY_COL2,
	MX31_PIN_KEY_COL3_KEY_COL3,
	/* USB Host 2 */
	IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
	IOMUX_MODE(MX31_PIN_PC_VS2, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_PC_BVD1, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_PC_BVD2, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_PC_RST, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_IOIS16, IOMUX_CONFIG_ALT1),
	IOMUX_MODE(MX31_PIN_PC_RW_B, IOMUX_CONFIG_ALT1),
	/* USB Host2 reset */
	IOMUX_MODE(MX31_PIN_USB_BYP, IOMUX_CONFIG_GPIO),
	};

	/*
	* Matrix keyboard
	*/

	static const uint32_t mx31_3ds_keymap[] = {
	KEY(0, 0, KEY_UP),
	KEY(0, 1, KEY_DOWN),
	KEY(1, 0, KEY_RIGHT),
	KEY(1, 1, KEY_LEFT),
	KEY(1, 2, KEY_ENTER),
	KEY(2, 0, KEY_F6),
	KEY(2, 1, KEY_F8),
	KEY(2, 2, KEY_F9),
	KEY(2, 3, KEY_F10),
	};

	static const struct matrix_keymap_data mx31_3ds_keymap_data __initconst = {
	.keymap = mx31_3ds_keymap,
	.keymap_size = ARRAY_SIZE(mx31_3ds_keymap),
	};

	/* Regulators */
	static struct regulator_init_data pwgtx_init = {
	.constraints = {
	.boot_on = 1,
	.always_on = 1,
	},
	};

	static struct regulator_init_data gpo_init = {
	.constraints = {
	.boot_on = 1,
	.always_on = 1,
	}
	};

	static struct mc13783_regulator_init_data mx31_3ds_regulators[] = {
	{
	.id = MC13783_REG_PWGT1SPI, /* Power Gate for ARM core. */
	.init_data = &pwgtx_init,
	}, {
	.id = MC13783_REG_PWGT2SPI, /* Power Gate for L2 Cache. */
	.init_data = &pwgtx_init,
	}, {

	.id = MC13783_REG_GPO1, /* Turn on 1.8V */
	.init_data = &gpo_init,
	}, {
	.id = MC13783_REG_GPO3, /* Turn on 3.3V */
	.init_data = &gpo_init,
	},
	};

	/* MC13783 */
	static struct mc13783_platform_data mc13783_pdata __initdata = {
	.regulators = mx31_3ds_regulators,
	.num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
	.flags = MC13783_USE_REGULATOR \| MC13783_USE_TOUCHSCREEN,
	};

	/* SPI */
	static int spi1_internal_chipselect[] = {
	MXC_SPI_CS(0),
	MXC_SPI_CS(2),
	};

	static const struct spi_imx_master spi1_pdata __initconst = {
	.chipselect = spi1_internal_chipselect,
	.num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
	};

	static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
	{
	.modalias = "mc13783",
	.max_speed_hz = 1000000,
	.bus_num = 1,
	.chip_select = 1, /* SS2 */
	.platform_data = &mc13783_pdata,
	.irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
	.mode = SPI_CS_HIGH,
	},
	};

	/*
	* NAND Flash
	*/
	static const struct mxc_nand_platform_data
	mx31_3ds_nand_board_info __initconst = {
	.width = 1,
	.hw_ecc = 1,
	#ifdef MACH_MX31_3DS_MXC_NAND_USE_BBT
	.flash_bbt = 1,
	#endif
	};

	/*
	* USB OTG
	*/

	#define USB_PAD_CFG (PAD_CTL_DRV_MAX \| PAD_CTL_SRE_FAST \| PAD_CTL_HYS_CMOS \| \
	PAD_CTL_ODE_CMOS \| PAD_CTL_100K_PU)

	#define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
	#define USBH2_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_BYP)

	static int mx31_3ds_usbotg_init(void)
	{
	int err;

	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);

	err = gpio_request(USBOTG_RST_B, "otgusb-reset");
	if (err) {
	pr_err("Failed to request the USB OTG reset gpio\n");
	return err;
	}

	err = gpio_direction_output(USBOTG_RST_B, 0);
	if (err) {
	pr_err("Failed to drive the USB OTG reset gpio\n");
	goto usbotg_free_reset;
	}

	mdelay(1);
	gpio_set_value(USBOTG_RST_B, 1);
	return 0;

	usbotg_free_reset:
	gpio_free(USBOTG_RST_B);
	return err;
	}

	static int mx31_3ds_host2_init(struct platform_device *pdev)
	{
	int err;

	mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_VS2, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_BVD1, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_BVD2, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_RST, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_IOIS16, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_PC_RW_B, USB_PAD_CFG);

	err = gpio_request(USBH2_RST_B, "usbh2-reset");
	if (err) {
	pr_err("Failed to request the USB Host 2 reset gpio\n");
	return err;
	}

	err = gpio_direction_output(USBH2_RST_B, 0);
	if (err) {
	pr_err("Failed to drive the USB Host 2 reset gpio\n");
	goto usbotg_free_reset;
	}

	mdelay(1);
	gpio_set_value(USBH2_RST_B, 1);
	return 0;

	usbotg_free_reset:
	gpio_free(USBH2_RST_B);
	return err;
	}

	#if defined(CONFIG_USB_ULPI)
	static struct mxc_usbh_platform_data otg_pdata __initdata = {
	.portsc = MXC_EHCI_MODE_ULPI,
	.flags = MXC_EHCI_POWER_PINS_ENABLED,
	};

	static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
	.init = mx31_3ds_host2_init,
	.portsc = MXC_EHCI_MODE_ULPI,
	.flags = MXC_EHCI_POWER_PINS_ENABLED,
	};
	#endif

	static const struct fsl_usb2_platform_data usbotg_pdata __initconst = {
	.operating_mode = FSL_USB2_DR_DEVICE,
	.phy_mode = FSL_USB2_PHY_ULPI,
	};

	static int otg_mode_host;

	static int __init mx31_3ds_otg_mode(char *options)
	{
	if (!strcmp(options, "host"))
	otg_mode_host = 1;
	else if (!strcmp(options, "device"))
	otg_mode_host = 0;
	else
	pr_info("otg_mode neither \"host\" nor \"device\". "
	"Defaulting to device\n");
	return 0;
	}
	__setup("otg_mode=", mx31_3ds_otg_mode);

	static const struct imxuart_platform_data uart_pdata __initconst = {
	.flags = IMXUART_HAVE_RTSCTS,
	};

	/*
	* Set up static virtual mappings.
	*/
	static void __init mx31_3ds_map_io(void)
	{
	mx31_map_io();
	}

	/*!
	* Board specific initialization.
	*/
	static void __init mxc_board_init(void)
	{
	mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
	"mx31_3ds");

	imx31_add_imx_uart0(&uart_pdata);
	imx31_add_mxc_nand(&mx31_3ds_nand_board_info);

	imx31_add_spi_imx1(&spi1_pdata);
	spi_register_board_info(mx31_3ds_spi_devs,
	ARRAY_SIZE(mx31_3ds_spi_devs));

	imx31_add_imx_keypad(&mx31_3ds_keymap_data);

	mx31_3ds_usbotg_init();
	#if defined(CONFIG_USB_ULPI)
	if (otg_mode_host) {
	otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
	ULPI_OTG_DRVVBUS \| ULPI_OTG_DRVVBUS_EXT);

	imx31_add_mxc_ehci_otg(&otg_pdata);
	}
	usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
	ULPI_OTG_DRVVBUS \| ULPI_OTG_DRVVBUS_EXT);
	imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
	#endif
	if (!otg_mode_host)
	imx31_add_fsl_usb2_udc(&usbotg_pdata);

	if (mxc_expio_init(MX31_CS5_BASE_ADDR, EXPIO_PARENT_INT))
	printk(KERN_WARNING "Init of the debug board failed, all "
	"devices on the debug board are unusable.\n");
	imx31_add_imx2_wdt(NULL);
	}

	static void __init mx31_3ds_timer_init(void)
	{
	mx31_clocks_init(26000000);
	}

	static struct sys_timer mx31_3ds_timer = {
	.init = mx31_3ds_timer_init,
	};

	/*
	* The following uses standard kernel macros defined in arch.h in order to
	* initialize __mach_desc_MX31_3DS data structure.
	*/
	MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
	/* Maintainer: Freescale Semiconductor, Inc. */
	.boot_params = MX3x_PHYS_OFFSET + 0x100,
	.map_io = mx31_3ds_map_io,
	.init_irq = mx31_init_irq,
	.init_machine = mxc_board_init,
	.timer = &mx31_3ds_timer,
	MACHINE_END