arch/arm/mach-imx/mach-mx21ads.c - linux - Git at Google

 /*
  *  Copyright (C) 2000 Deep Blue Solutions Ltd
  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
  *  Copyright 2006-2007 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/platform_device.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/physmap.h>
 #include <linux/gpio/driver.h>
 #include <linux/gpio/machine.h>
 #include <linux/gpio.h>
 #include <linux/regulator/fixed.h>
 #include <linux/regulator/machine.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>

 #include "common.h"
 #include "devices-imx21.h"
 #include "hardware.h"
 #include "iomux-mx21.h"

 #define MX21ADS_CS8900A_REG		(MX21_CS1_BASE_ADDR + 0x000000)
 #define MX21ADS_ST16C255_IOBASE_REG	(MX21_CS1_BASE_ADDR + 0x200000)
 #define MX21ADS_VERSION_REG		(MX21_CS1_BASE_ADDR + 0x400000)
 #define MX21ADS_IO_REG			(MX21_CS1_BASE_ADDR + 0x800000)

 #define MX21ADS_MMC_CD			IMX_GPIO_NR(4, 25)
 #define MX21ADS_CS8900A_IRQ_GPIO	IMX_GPIO_NR(5, 11)
 #define MX21ADS_MMGPIO_BASE		(6 * 32)

 /* MX21ADS_IO_REG bit definitions */
 #define MX21ADS_IO_SD_WP		(MX21ADS_MMGPIO_BASE + 0)
 #define MX21ADS_IO_TP6			(MX21ADS_IO_SD_WP)
 #define MX21ADS_IO_SW_SEL		(MX21ADS_MMGPIO_BASE + 1)
 #define MX21ADS_IO_TP7			(MX21ADS_IO_SW_SEL)
 #define MX21ADS_IO_RESET_E_UART		(MX21ADS_MMGPIO_BASE + 2)
 #define MX21ADS_IO_RESET_BASE		(MX21ADS_MMGPIO_BASE + 3)
 #define MX21ADS_IO_CSI_CTL2		(MX21ADS_MMGPIO_BASE + 4)
 #define MX21ADS_IO_CSI_CTL1		(MX21ADS_MMGPIO_BASE + 5)
 #define MX21ADS_IO_CSI_CTL0		(MX21ADS_MMGPIO_BASE + 6)
 #define MX21ADS_IO_UART1_EN		(MX21ADS_MMGPIO_BASE + 7)
 #define MX21ADS_IO_UART4_EN		(MX21ADS_MMGPIO_BASE + 8)
 #define MX21ADS_IO_LCDON		(MX21ADS_MMGPIO_BASE + 9)
 #define MX21ADS_IO_IRDA_EN		(MX21ADS_MMGPIO_BASE + 10)
 #define MX21ADS_IO_IRDA_FIR_SEL		(MX21ADS_MMGPIO_BASE + 11)
 #define MX21ADS_IO_IRDA_MD0_B		(MX21ADS_MMGPIO_BASE + 12)
 #define MX21ADS_IO_IRDA_MD1		(MX21ADS_MMGPIO_BASE + 13)
 #define MX21ADS_IO_LED4_ON		(MX21ADS_MMGPIO_BASE + 14)
 #define MX21ADS_IO_LED3_ON		(MX21ADS_MMGPIO_BASE + 15)

 static const int mx21ads_pins[] __initconst = {

 	/* CS8900A */
 	(GPIO_PORTE | GPIO_GPIO | GPIO_IN | 11),

 	/* UART1 */
 	PE12_PF_UART1_TXD,
 	PE13_PF_UART1_RXD,
 	PE14_PF_UART1_CTS,
 	PE15_PF_UART1_RTS,

 	/* UART3 (IrDA) - only TXD and RXD */
 	PE8_PF_UART3_TXD,
 	PE9_PF_UART3_RXD,

 	/* UART4 */
 	PB26_AF_UART4_RTS,
 	PB28_AF_UART4_TXD,
 	PB29_AF_UART4_CTS,
 	PB31_AF_UART4_RXD,

 	/* LCDC */
 	PA5_PF_LSCLK,
 	PA6_PF_LD0,
 	PA7_PF_LD1,
 	PA8_PF_LD2,
 	PA9_PF_LD3,
 	PA10_PF_LD4,
 	PA11_PF_LD5,
 	PA12_PF_LD6,
 	PA13_PF_LD7,
 	PA14_PF_LD8,
 	PA15_PF_LD9,
 	PA16_PF_LD10,
 	PA17_PF_LD11,
 	PA18_PF_LD12,
 	PA19_PF_LD13,
 	PA20_PF_LD14,
 	PA21_PF_LD15,
 	PA22_PF_LD16,
 	PA24_PF_REV,     /* Sharp panel dedicated signal */
 	PA25_PF_CLS,     /* Sharp panel dedicated signal */
 	PA26_PF_PS,      /* Sharp panel dedicated signal */
 	PA27_PF_SPL_SPR, /* Sharp panel dedicated signal */
 	PA28_PF_HSYNC,
 	PA29_PF_VSYNC,
 	PA30_PF_CONTRAST,
 	PA31_PF_OE_ACD,

 	/* MMC/SDHC */
 	PE18_PF_SD1_D0,
 	PE19_PF_SD1_D1,
 	PE20_PF_SD1_D2,
 	PE21_PF_SD1_D3,
 	PE22_PF_SD1_CMD,
 	PE23_PF_SD1_CLK,

 	/* NFC */
 	PF0_PF_NRFB,
 	PF1_PF_NFCE,
 	PF2_PF_NFWP,
 	PF3_PF_NFCLE,
 	PF4_PF_NFALE,
 	PF5_PF_NFRE,
 	PF6_PF_NFWE,
 	PF7_PF_NFIO0,
 	PF8_PF_NFIO1,
 	PF9_PF_NFIO2,
 	PF10_PF_NFIO3,
 	PF11_PF_NFIO4,
 	PF12_PF_NFIO5,
 	PF13_PF_NFIO6,
 	PF14_PF_NFIO7,
 };

 /* ADS's NOR flash: 2x AM29BDS128HE9VKI on 32-bit bus */
 static struct physmap_flash_data mx21ads_flash_data = {
 	.width = 4,
 };

 static struct resource mx21ads_flash_resource =
 	DEFINE_RES_MEM(MX21_CS0_BASE_ADDR, SZ_32M);

 static struct platform_device mx21ads_nor_mtd_device = {
 	.name = "physmap-flash",
 	.id = 0,
 	.dev = {
 		.platform_data = &mx21ads_flash_data,
 	},
 	.num_resources = 1,
 	.resource = &mx21ads_flash_resource,
 };

 static struct resource mx21ads_cs8900_resources[] __initdata = {
 	DEFINE_RES_MEM(MX21ADS_CS8900A_REG, SZ_1K),
 	/* irq number is run-time assigned */
 	DEFINE_RES_IRQ(-1),
 };

 static const struct platform_device_info mx21ads_cs8900_devinfo __initconst = {
 	.name = "cs89x0",
 	.id = 0,
 	.res = mx21ads_cs8900_resources,
 	.num_res = ARRAY_SIZE(mx21ads_cs8900_resources),
 };

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

 static const struct imxuart_platform_data uart_pdata_norts __initconst = {
 };

 static struct resource mx21ads_mmgpio_resource =
 	DEFINE_RES_MEM_NAMED(MX21ADS_IO_REG, SZ_2, "dat");

 static struct bgpio_pdata mx21ads_mmgpio_pdata = {
 	.label	= "mx21ads-mmgpio",
 	.base	= MX21ADS_MMGPIO_BASE,
 	.ngpio	= 16,
 };

 static struct platform_device mx21ads_mmgpio = {
 	.name = "basic-mmio-gpio",
 	.id = PLATFORM_DEVID_AUTO,
 	.resource = &mx21ads_mmgpio_resource,
 	.num_resources = 1,
 	.dev = {
 		.platform_data = &mx21ads_mmgpio_pdata,
 	},
 };

 static struct regulator_consumer_supply mx21ads_lcd_regulator_consumer =
 	REGULATOR_SUPPLY("lcd", "imx-fb.0");

 static struct regulator_init_data mx21ads_lcd_regulator_init_data = {
 	.constraints = {
 		.valid_ops_mask	= REGULATOR_CHANGE_STATUS,
 	},
 	.consumer_supplies	= &mx21ads_lcd_regulator_consumer,
 	.num_consumer_supplies	= 1,
 };

 static struct fixed_voltage_config mx21ads_lcd_regulator_pdata = {
 	.supply_name	= "LCD",
 	.microvolts	= 3300000,
 	.enable_high	= 1,
 	.init_data	= &mx21ads_lcd_regulator_init_data,
 };

 static struct platform_device mx21ads_lcd_regulator = {
 	.name = "reg-fixed-voltage",
 	.id = PLATFORM_DEVID_AUTO,
 	.dev = {
 		.platform_data = &mx21ads_lcd_regulator_pdata,
 	},
 };

 static struct gpiod_lookup_table mx21ads_lcd_regulator_gpiod_table = {
 	.dev_id = "reg-fixed-voltage.0", /* Let's hope ID 0 is what we get */
 	.table = {
 		GPIO_LOOKUP("mx21ads-mmgpio", 9, NULL, GPIO_ACTIVE_HIGH),
 		{ },
 	},
 };

 /*
  * Connected is a portrait Sharp-QVGA display
  * of type: LQ035Q7DB02
  */
 static struct imx_fb_videomode mx21ads_modes[] = {
 	{
 		.mode = {
 			.name		= "Sharp-LQ035Q7",
 			.refresh	= 60,
 			.xres		= 240,
 			.yres		= 320,
 			.pixclock	= 188679, /* in ps (5.3MHz) */
 			.hsync_len	= 2,
 			.left_margin	= 6,
 			.right_margin	= 16,
 			.vsync_len	= 1,
 			.upper_margin	= 8,
 			.lower_margin	= 10,
 		},
 		.pcr		= 0xfb108bc7,
 		.bpp		= 16,
 	},
 };

 static const struct imx_fb_platform_data mx21ads_fb_data __initconst = {
 	.mode = mx21ads_modes,
 	.num_modes = ARRAY_SIZE(mx21ads_modes),

 	.pwmr		= 0x00a903ff,
 	.lscr1		= 0x00120300,
 	.dmacr		= 0x00020008,
 };

 static int mx21ads_sdhc_get_ro(struct device *dev)
 {
 	return gpio_get_value(MX21ADS_IO_SD_WP);
 }

 static int mx21ads_sdhc_init(struct device *dev, irq_handler_t detect_irq,
 	void *data)
 {
 	int ret;

 	ret = gpio_request(MX21ADS_IO_SD_WP, "mmc-ro");
 	if (ret)
 		return ret;

 	return request_irq(gpio_to_irq(MX21ADS_MMC_CD), detect_irq,
 			   IRQF_TRIGGER_FALLING, "mmc-detect", data);
 }

 static void mx21ads_sdhc_exit(struct device *dev, void *data)
 {
 	free_irq(gpio_to_irq(MX21ADS_MMC_CD), data);
 	gpio_free(MX21ADS_IO_SD_WP);
 }

 static const struct imxmmc_platform_data mx21ads_sdhc_pdata __initconst = {
 	.ocr_avail = MMC_VDD_29_30 | MMC_VDD_30_31, /* 3.0V */
 	.get_ro = mx21ads_sdhc_get_ro,
 	.init = mx21ads_sdhc_init,
 	.exit = mx21ads_sdhc_exit,
 };

 static const struct mxc_nand_platform_data
 mx21ads_nand_board_info __initconst = {
 	.width = 1,
 	.hw_ecc = 1,
 };

 static struct platform_device *platform_devices[] __initdata = {
 	&mx21ads_mmgpio,
 	&mx21ads_lcd_regulator,
 	&mx21ads_nor_mtd_device,
 };

 static void __init mx21ads_board_init(void)
 {
 	imx21_soc_init();

 	mxc_gpio_setup_multiple_pins(mx21ads_pins, ARRAY_SIZE(mx21ads_pins),
 			"mx21ads");

 	imx21_add_imx_uart0(&uart_pdata_rts);
 	imx21_add_imx_uart2(&uart_pdata_norts);
 	imx21_add_imx_uart3(&uart_pdata_rts);
 	imx21_add_mxc_nand(&mx21ads_nand_board_info);

 	imx21_add_imx_fb(&mx21ads_fb_data);
 }

 static void __init mx21ads_late_init(void)
 {
 	imx21_add_mxc_mmc(0, &mx21ads_sdhc_pdata);

 	gpiod_add_lookup_table(&mx21ads_lcd_regulator_gpiod_table);
 	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));

 	mx21ads_cs8900_resources[1].start =
 			gpio_to_irq(MX21ADS_CS8900A_IRQ_GPIO);
 	mx21ads_cs8900_resources[1].end =
 			gpio_to_irq(MX21ADS_CS8900A_IRQ_GPIO);
 	platform_device_register_full(&mx21ads_cs8900_devinfo);
 }

 static void __init mx21ads_timer_init(void)
 {
 	mx21_clocks_init(32768, 26000000);
 }

 MACHINE_START(MX21ADS, "Freescale i.MX21ADS")
 	/* maintainer: Freescale Semiconductor, Inc. */
 	.atag_offset = 0x100,
 	.map_io		= mx21_map_io,
 	.init_early = imx21_init_early,
 	.init_irq = mx21_init_irq,
 	.init_time	= mx21ads_timer_init,
 	.init_machine	= mx21ads_board_init,
 	.init_late	= mx21ads_late_init,
 	.restart	= mxc_restart,
 MACHINE_END
	/*
	* Copyright (C) 2000 Deep Blue Solutions Ltd
	* Copyright (C) 2002 Shane Nay (shane@minirl.com)
	* Copyright 2006-2007 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/platform_device.h>
	#include <linux/mtd/mtd.h>
	#include <linux/mtd/physmap.h>
	#include <linux/gpio/driver.h>
	#include <linux/gpio/machine.h>
	#include <linux/gpio.h>
	#include <linux/regulator/fixed.h>
	#include <linux/regulator/machine.h>
	#include <asm/mach-types.h>
	#include <asm/mach/arch.h>

	#include "common.h"
	#include "devices-imx21.h"
	#include "hardware.h"
	#include "iomux-mx21.h"

	#define MX21ADS_CS8900A_REG (MX21_CS1_BASE_ADDR + 0x000000)
	#define MX21ADS_ST16C255_IOBASE_REG (MX21_CS1_BASE_ADDR + 0x200000)
	#define MX21ADS_VERSION_REG (MX21_CS1_BASE_ADDR + 0x400000)
	#define MX21ADS_IO_REG (MX21_CS1_BASE_ADDR + 0x800000)

	#define MX21ADS_MMC_CD IMX_GPIO_NR(4, 25)
	#define MX21ADS_CS8900A_IRQ_GPIO IMX_GPIO_NR(5, 11)
	#define MX21ADS_MMGPIO_BASE (6 * 32)

	/* MX21ADS_IO_REG bit definitions */
	#define MX21ADS_IO_SD_WP (MX21ADS_MMGPIO_BASE + 0)
	#define MX21ADS_IO_TP6 (MX21ADS_IO_SD_WP)
	#define MX21ADS_IO_SW_SEL (MX21ADS_MMGPIO_BASE + 1)
	#define MX21ADS_IO_TP7 (MX21ADS_IO_SW_SEL)
	#define MX21ADS_IO_RESET_E_UART (MX21ADS_MMGPIO_BASE + 2)
	#define MX21ADS_IO_RESET_BASE (MX21ADS_MMGPIO_BASE + 3)
	#define MX21ADS_IO_CSI_CTL2 (MX21ADS_MMGPIO_BASE + 4)
	#define MX21ADS_IO_CSI_CTL1 (MX21ADS_MMGPIO_BASE + 5)
	#define MX21ADS_IO_CSI_CTL0 (MX21ADS_MMGPIO_BASE + 6)
	#define MX21ADS_IO_UART1_EN (MX21ADS_MMGPIO_BASE + 7)
	#define MX21ADS_IO_UART4_EN (MX21ADS_MMGPIO_BASE + 8)
	#define MX21ADS_IO_LCDON (MX21ADS_MMGPIO_BASE + 9)
	#define MX21ADS_IO_IRDA_EN (MX21ADS_MMGPIO_BASE + 10)
	#define MX21ADS_IO_IRDA_FIR_SEL (MX21ADS_MMGPIO_BASE + 11)
	#define MX21ADS_IO_IRDA_MD0_B (MX21ADS_MMGPIO_BASE + 12)
	#define MX21ADS_IO_IRDA_MD1 (MX21ADS_MMGPIO_BASE + 13)
	#define MX21ADS_IO_LED4_ON (MX21ADS_MMGPIO_BASE + 14)
	#define MX21ADS_IO_LED3_ON (MX21ADS_MMGPIO_BASE + 15)

	static const int mx21ads_pins[] __initconst = {

	/* CS8900A */
	(GPIO_PORTE \| GPIO_GPIO \| GPIO_IN \| 11),

	/* UART1 */
	PE12_PF_UART1_TXD,
	PE13_PF_UART1_RXD,
	PE14_PF_UART1_CTS,
	PE15_PF_UART1_RTS,

	/* UART3 (IrDA) - only TXD and RXD */
	PE8_PF_UART3_TXD,
	PE9_PF_UART3_RXD,

	/* UART4 */
	PB26_AF_UART4_RTS,
	PB28_AF_UART4_TXD,
	PB29_AF_UART4_CTS,
	PB31_AF_UART4_RXD,

	/* LCDC */
	PA5_PF_LSCLK,
	PA6_PF_LD0,
	PA7_PF_LD1,
	PA8_PF_LD2,
	PA9_PF_LD3,
	PA10_PF_LD4,
	PA11_PF_LD5,
	PA12_PF_LD6,
	PA13_PF_LD7,
	PA14_PF_LD8,
	PA15_PF_LD9,
	PA16_PF_LD10,
	PA17_PF_LD11,
	PA18_PF_LD12,
	PA19_PF_LD13,
	PA20_PF_LD14,
	PA21_PF_LD15,
	PA22_PF_LD16,
	PA24_PF_REV, /* Sharp panel dedicated signal */
	PA25_PF_CLS, /* Sharp panel dedicated signal */
	PA26_PF_PS, /* Sharp panel dedicated signal */
	PA27_PF_SPL_SPR, /* Sharp panel dedicated signal */
	PA28_PF_HSYNC,
	PA29_PF_VSYNC,
	PA30_PF_CONTRAST,
	PA31_PF_OE_ACD,

	/* MMC/SDHC */
	PE18_PF_SD1_D0,
	PE19_PF_SD1_D1,
	PE20_PF_SD1_D2,
	PE21_PF_SD1_D3,
	PE22_PF_SD1_CMD,
	PE23_PF_SD1_CLK,

	/* NFC */
	PF0_PF_NRFB,
	PF1_PF_NFCE,
	PF2_PF_NFWP,
	PF3_PF_NFCLE,
	PF4_PF_NFALE,
	PF5_PF_NFRE,
	PF6_PF_NFWE,
	PF7_PF_NFIO0,
	PF8_PF_NFIO1,
	PF9_PF_NFIO2,
	PF10_PF_NFIO3,
	PF11_PF_NFIO4,
	PF12_PF_NFIO5,
	PF13_PF_NFIO6,
	PF14_PF_NFIO7,
	};

	/* ADS's NOR flash: 2x AM29BDS128HE9VKI on 32-bit bus */
	static struct physmap_flash_data mx21ads_flash_data = {
	.width = 4,
	};

	static struct resource mx21ads_flash_resource =
	DEFINE_RES_MEM(MX21_CS0_BASE_ADDR, SZ_32M);

	static struct platform_device mx21ads_nor_mtd_device = {
	.name = "physmap-flash",
	.id = 0,
	.dev = {
	.platform_data = &mx21ads_flash_data,
	},
	.num_resources = 1,
	.resource = &mx21ads_flash_resource,
	};

	static struct resource mx21ads_cs8900_resources[] __initdata = {
	DEFINE_RES_MEM(MX21ADS_CS8900A_REG, SZ_1K),
	/* irq number is run-time assigned */
	DEFINE_RES_IRQ(-1),
	};

	static const struct platform_device_info mx21ads_cs8900_devinfo __initconst = {
	.name = "cs89x0",
	.id = 0,
	.res = mx21ads_cs8900_resources,
	.num_res = ARRAY_SIZE(mx21ads_cs8900_resources),
	};

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

	static const struct imxuart_platform_data uart_pdata_norts __initconst = {
	};

	static struct resource mx21ads_mmgpio_resource =
	DEFINE_RES_MEM_NAMED(MX21ADS_IO_REG, SZ_2, "dat");

	static struct bgpio_pdata mx21ads_mmgpio_pdata = {
	.label = "mx21ads-mmgpio",
	.base = MX21ADS_MMGPIO_BASE,
	.ngpio = 16,
	};

	static struct platform_device mx21ads_mmgpio = {
	.name = "basic-mmio-gpio",
	.id = PLATFORM_DEVID_AUTO,
	.resource = &mx21ads_mmgpio_resource,
	.num_resources = 1,
	.dev = {
	.platform_data = &mx21ads_mmgpio_pdata,
	},
	};

	static struct regulator_consumer_supply mx21ads_lcd_regulator_consumer =
	REGULATOR_SUPPLY("lcd", "imx-fb.0");

	static struct regulator_init_data mx21ads_lcd_regulator_init_data = {
	.constraints = {
	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
	},
	.consumer_supplies = &mx21ads_lcd_regulator_consumer,
	.num_consumer_supplies = 1,
	};

	static struct fixed_voltage_config mx21ads_lcd_regulator_pdata = {
	.supply_name = "LCD",
	.microvolts = 3300000,
	.enable_high = 1,
	.init_data = &mx21ads_lcd_regulator_init_data,
	};

	static struct platform_device mx21ads_lcd_regulator = {
	.name = "reg-fixed-voltage",
	.id = PLATFORM_DEVID_AUTO,
	.dev = {
	.platform_data = &mx21ads_lcd_regulator_pdata,
	},
	};

	static struct gpiod_lookup_table mx21ads_lcd_regulator_gpiod_table = {
	.dev_id = "reg-fixed-voltage.0", /* Let's hope ID 0 is what we get */
	.table = {
	GPIO_LOOKUP("mx21ads-mmgpio", 9, NULL, GPIO_ACTIVE_HIGH),
	{ },
	},
	};

	/*
	* Connected is a portrait Sharp-QVGA display
	* of type: LQ035Q7DB02
	*/
	static struct imx_fb_videomode mx21ads_modes[] = {
	{
	.mode = {
	.name = "Sharp-LQ035Q7",
	.refresh = 60,
	.xres = 240,
	.yres = 320,
	.pixclock = 188679, /* in ps (5.3MHz) */
	.hsync_len = 2,
	.left_margin = 6,
	.right_margin = 16,
	.vsync_len = 1,
	.upper_margin = 8,
	.lower_margin = 10,
	},
	.pcr = 0xfb108bc7,
	.bpp = 16,
	},
	};

	static const struct imx_fb_platform_data mx21ads_fb_data __initconst = {
	.mode = mx21ads_modes,
	.num_modes = ARRAY_SIZE(mx21ads_modes),

	.pwmr = 0x00a903ff,
	.lscr1 = 0x00120300,
	.dmacr = 0x00020008,
	};

	static int mx21ads_sdhc_get_ro(struct device *dev)
	{
	return gpio_get_value(MX21ADS_IO_SD_WP);
	}

	static int mx21ads_sdhc_init(struct device *dev, irq_handler_t detect_irq,
	void *data)
	{
	int ret;

	ret = gpio_request(MX21ADS_IO_SD_WP, "mmc-ro");
	if (ret)
	return ret;

	return request_irq(gpio_to_irq(MX21ADS_MMC_CD), detect_irq,
	IRQF_TRIGGER_FALLING, "mmc-detect", data);
	}

	static void mx21ads_sdhc_exit(struct device dev, void data)
	{
	free_irq(gpio_to_irq(MX21ADS_MMC_CD), data);
	gpio_free(MX21ADS_IO_SD_WP);
	}

	static const struct imxmmc_platform_data mx21ads_sdhc_pdata __initconst = {
	.ocr_avail = MMC_VDD_29_30 \| MMC_VDD_30_31, /* 3.0V */
	.get_ro = mx21ads_sdhc_get_ro,
	.init = mx21ads_sdhc_init,
	.exit = mx21ads_sdhc_exit,
	};

	static const struct mxc_nand_platform_data
	mx21ads_nand_board_info __initconst = {
	.width = 1,
	.hw_ecc = 1,
	};

	static struct platform_device *platform_devices[] __initdata = {
	&mx21ads_mmgpio,
	&mx21ads_lcd_regulator,
	&mx21ads_nor_mtd_device,
	};

	static void __init mx21ads_board_init(void)
	{
	imx21_soc_init();

	mxc_gpio_setup_multiple_pins(mx21ads_pins, ARRAY_SIZE(mx21ads_pins),
	"mx21ads");

	imx21_add_imx_uart0(&uart_pdata_rts);
	imx21_add_imx_uart2(&uart_pdata_norts);
	imx21_add_imx_uart3(&uart_pdata_rts);
	imx21_add_mxc_nand(&mx21ads_nand_board_info);

	imx21_add_imx_fb(&mx21ads_fb_data);
	}

	static void __init mx21ads_late_init(void)
	{
	imx21_add_mxc_mmc(0, &mx21ads_sdhc_pdata);

	gpiod_add_lookup_table(&mx21ads_lcd_regulator_gpiod_table);
	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));

	mx21ads_cs8900_resources[1].start =
	gpio_to_irq(MX21ADS_CS8900A_IRQ_GPIO);
	mx21ads_cs8900_resources[1].end =
	gpio_to_irq(MX21ADS_CS8900A_IRQ_GPIO);
	platform_device_register_full(&mx21ads_cs8900_devinfo);
	}

	static void __init mx21ads_timer_init(void)
	{
	mx21_clocks_init(32768, 26000000);
	}

	MACHINE_START(MX21ADS, "Freescale i.MX21ADS")
	/* maintainer: Freescale Semiconductor, Inc. */
	.atag_offset = 0x100,
	.map_io = mx21_map_io,
	.init_early = imx21_init_early,
	.init_irq = mx21_init_irq,
	.init_time = mx21ads_timer_init,
	.init_machine = mx21ads_board_init,
	.init_late = mx21ads_late_init,
	.restart = mxc_restart,
	MACHINE_END