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Commit 50fbabfe authored by Hemant Pedanekar's avatar Hemant Pedanekar Committed by Kevin Hilman
Browse files

davinci: dm646x-evm: Add platform data for NAND 



This patch adds platform data and partition info for NAND on dm6467 EVM.

Note that the partition layout is dependent on the UBL, U-Boot etc. used. This
patch tries to minimize that dependency by setting first partition for UBL,
U-Boot and environment altogether.

Signed-off-by: default avatarHemant Pedanekar <hemantp@ti.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent 42d399e4

arch/arm/mach-davinci/board-dm646x-evm.c

+69 −0
Original line number Original line Diff line number Diff line
@@ -27,6 +27,10 @@ 




#include <media/tvp514x.h>

#include <media/tvp514x.h>





#include <linux/mtd/mtd.h>

#include <linux/mtd/nand.h>

#include <linux/mtd/partitions.h>



#include <asm/mach-types.h>

#include <asm/mach-types.h>

#include <asm/mach/arch.h>

#include <asm/mach/arch.h>
@@ -34,6 +38,7 @@ 
#include <mach/common.h>

#include <mach/common.h>

#include <mach/serial.h>

#include <mach/serial.h>

#include <mach/i2c.h>

#include <mach/i2c.h>

#include <mach/nand.h>





#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \

#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \

    defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)

    defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
@@ -42,6 +47,11 @@ 
#define HAS_ATA 0

#define HAS_ATA 0

#endif

#endif





#define DAVINCI_ASYNC_EMIF_CONTROL_BASE		0x20008000

#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE	0x42000000



#define NAND_BLOCK_SIZE		SZ_128K



/* CPLD Register 0 bits to control ATA */

/* CPLD Register 0 bits to control ATA */

#define DM646X_EVM_ATA_RST		BIT(0)

#define DM646X_EVM_ATA_RST		BIT(0)

#define DM646X_EVM_ATA_PWD		BIT(1)

#define DM646X_EVM_ATA_PWD		BIT(1)
@@ -77,6 +87,63 @@ static struct davinci_uart_config uart_config __initdata = { 
	.enabled_uarts = (1 << 0),

	.enabled_uarts = (1 << 0),

};

};





/* Note: We are setting first partition as 'bootloader' constituting UBL, U-Boot

 * and U-Boot environment this avoids dependency on any particular combination

 * of UBL, U-Boot or flashing tools etc.

 */

static struct mtd_partition davinci_nand_partitions[] = {

	{

		/* UBL, U-Boot with environment */

		.name		= "bootloader",

		.offset		= MTDPART_OFS_APPEND,

		.size		= 16 * NAND_BLOCK_SIZE,

		.mask_flags	= MTD_WRITEABLE,	/* force read-only */

	}, {

		.name		= "kernel",

		.offset		= MTDPART_OFS_APPEND,

		.size		= SZ_4M,

		.mask_flags	= 0,

	}, {

		.name		= "filesystem",

		.offset		= MTDPART_OFS_APPEND,

		.size		= MTDPART_SIZ_FULL,

		.mask_flags	= 0,

	}

};



static struct davinci_nand_pdata davinci_nand_data = {

	.mask_cle 		= 0x80000,

	.mask_ale 		= 0x40000,

	.parts			= davinci_nand_partitions,

	.nr_parts		= ARRAY_SIZE(davinci_nand_partitions),

	.ecc_mode		= NAND_ECC_HW,

	.options		= 0,

};



static struct resource davinci_nand_resources[] = {

	{

		.start		= DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,

		.end		= DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,

		.flags		= IORESOURCE_MEM,

	}, {

		.start		= DAVINCI_ASYNC_EMIF_CONTROL_BASE,

		.end		= DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,

		.flags		= IORESOURCE_MEM,

	},

};



static struct platform_device davinci_nand_device = {

	.name			= "davinci_nand",

	.id			= 0,



	.num_resources		= ARRAY_SIZE(davinci_nand_resources),

	.resource		= davinci_nand_resources,



	.dev			= {

		.platform_data	= &davinci_nand_data,

	},

};



/* CPLD Register 0 Client: used for I/O Control */

/* CPLD Register 0 Client: used for I/O Control */

static int cpld_reg0_probe(struct i2c_client *client,

static int cpld_reg0_probe(struct i2c_client *client,

			   const struct i2c_device_id *id)

			   const struct i2c_device_id *id)
@@ -632,6 +699,8 @@ static __init void evm_init(void) 
	dm646x_init_mcasp0(&dm646x_evm_snd_data[0]);

	dm646x_init_mcasp0(&dm646x_evm_snd_data[0]);

	dm646x_init_mcasp1(&dm646x_evm_snd_data[1]);

	dm646x_init_mcasp1(&dm646x_evm_snd_data[1]);





	platform_device_register(&davinci_nand_device);



	if (HAS_ATA)

	if (HAS_ATA)

		dm646x_init_ide();

		dm646x_init_ide();