Commit 92eb4908 authored by Bartosz Golaszewski's avatar Bartosz Golaszewski Committed by Sekhar Nori
Browse files

ARM: davinci: omapl138-hawk: add aemif & nand support 



We now have support for aemif & nand from board files. As an example
add support for nand to da850-hawk.

Signed-off-by: default avatarBartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
parent 63a9a4f9

arch/arm/mach-davinci/board-omapl138-hawk.c

+132 −0
Original line number Diff line number Diff line
@@ -15,7 +15,12 @@ 
#include <linux/interrupt.h>

#include <linux/gpio.h>

#include <linux/gpio/machine.h>

#include <linux/mtd/partitions.h>

#include <linux/mtd/rawnand.h>

#include <linux/platform_data/gpio-davinci.h>

#include <linux/platform_data/mtd-davinci.h>

#include <linux/platform_data/mtd-davinci-aemif.h>

#include <linux/platform_data/ti-aemif.h>

#include <linux/regulator/machine.h>



#include <asm/mach-types.h>
@@ -166,6 +171,129 @@ static __init void omapl138_hawk_mmc_init(void) 
	gpiod_remove_lookup_table(&mmc_gpios_table);

}



static struct mtd_partition omapl138_hawk_nandflash_partition[] = {

	{

		.name		= "u-boot env",

		.offset		= 0,

		.size		= SZ_128K,

		.mask_flags	= MTD_WRITEABLE,

	 },

	{

		.name		= "u-boot",

		.offset		= MTDPART_OFS_APPEND,

		.size		= SZ_512K,

		.mask_flags	= MTD_WRITEABLE,

	},

	{

		.name		= "free space",

		.offset		= MTDPART_OFS_APPEND,

		.size		= MTDPART_SIZ_FULL,

		.mask_flags	= 0,

	},

};



static struct davinci_aemif_timing omapl138_hawk_nandflash_timing = {

	.wsetup		= 24,

	.wstrobe	= 21,

	.whold		= 14,

	.rsetup		= 19,

	.rstrobe	= 50,

	.rhold		= 0,

	.ta		= 20,

};



static struct davinci_nand_pdata omapl138_hawk_nandflash_data = {

	.core_chipsel	= 1,

	.parts		= omapl138_hawk_nandflash_partition,

	.nr_parts	= ARRAY_SIZE(omapl138_hawk_nandflash_partition),

	.ecc_mode	= NAND_ECC_HW,

	.ecc_bits	= 4,

	.bbt_options	= NAND_BBT_USE_FLASH,

	.options	= NAND_BUSWIDTH_16,

	.timing		= &omapl138_hawk_nandflash_timing,

	.mask_chipsel	= 0,

	.mask_ale	= 0,

	.mask_cle	= 0,

};



static struct resource omapl138_hawk_nandflash_resource[] = {

	{

		.start	= DA8XX_AEMIF_CS3_BASE,

		.end	= DA8XX_AEMIF_CS3_BASE + SZ_32M,

		.flags	= IORESOURCE_MEM,

	},

	{

		.start	= DA8XX_AEMIF_CTL_BASE,

		.end	= DA8XX_AEMIF_CTL_BASE + SZ_32K,

		.flags	= IORESOURCE_MEM,

	},

};



static struct resource omapl138_hawk_aemif_resource[] = {

	{

		.start	= DA8XX_AEMIF_CTL_BASE,

		.end	= DA8XX_AEMIF_CTL_BASE + SZ_32K,

		.flags	= IORESOURCE_MEM,

	}

};



static struct aemif_abus_data omapl138_hawk_aemif_abus_data[] = {

	{

		.cs	= 3,

	}

};



static struct platform_device omapl138_hawk_aemif_devices[] = {

	{

		.name		= "davinci_nand",

		.id		= -1,

		.dev		= {

			.platform_data	= &omapl138_hawk_nandflash_data,

		},

		.resource	= omapl138_hawk_nandflash_resource,

		.num_resources	= ARRAY_SIZE(omapl138_hawk_nandflash_resource),

	}

};



static struct aemif_platform_data omapl138_hawk_aemif_pdata = {

	.cs_offset = 2,

	.abus_data = omapl138_hawk_aemif_abus_data,

	.num_abus_data = ARRAY_SIZE(omapl138_hawk_aemif_abus_data),

	.sub_devices = omapl138_hawk_aemif_devices,

	.num_sub_devices = ARRAY_SIZE(omapl138_hawk_aemif_devices),

};



static struct platform_device omapl138_hawk_aemif_device = {

	.name		= "ti-aemif",

	.id		= -1,

	.dev = {

		.platform_data	= &omapl138_hawk_aemif_pdata,

	},

	.resource	= omapl138_hawk_aemif_resource,

	.num_resources	= ARRAY_SIZE(omapl138_hawk_aemif_resource),

};



static const short omapl138_hawk_nand_pins[] = {

	DA850_EMA_WAIT_1, DA850_NEMA_OE, DA850_NEMA_WE, DA850_NEMA_CS_3,

	DA850_EMA_D_0, DA850_EMA_D_1, DA850_EMA_D_2, DA850_EMA_D_3,

	DA850_EMA_D_4, DA850_EMA_D_5, DA850_EMA_D_6, DA850_EMA_D_7,

	DA850_EMA_D_8, DA850_EMA_D_9, DA850_EMA_D_10, DA850_EMA_D_11,

	DA850_EMA_D_12, DA850_EMA_D_13, DA850_EMA_D_14, DA850_EMA_D_15,

	DA850_EMA_A_1, DA850_EMA_A_2,

	-1

};



static int omapl138_hawk_register_aemif(void)

{

	int ret;



	ret = davinci_cfg_reg_list(omapl138_hawk_nand_pins);

	if (ret)

		pr_warn("%s: NAND mux setup failed: %d\n", __func__, ret);



	return platform_device_register(&omapl138_hawk_aemif_device);

}



static irqreturn_t omapl138_hawk_usb_ocic_irq(int irq, void *dev_id);

static da8xx_ocic_handler_t hawk_usb_ocic_handler;
@@ -298,6 +426,10 @@ static __init void omapl138_hawk_init(void) 


	omapl138_hawk_usb_init();



	ret = omapl138_hawk_register_aemif();

	if (ret)

		pr_warn("%s: aemif registration failed: %d\n", __func__, ret);



	ret = da8xx_register_watchdog();

	if (ret)

		pr_warn("%s: watchdog registration failed: %d\n",