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Commit 38beb929 authored by Sudhakar Rajashekhara's avatar Sudhakar Rajashekhara Committed by Kevin Hilman
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davinci: Add NAND flash support for DA850/OMAP-L138 



This patch adds platform data for the 512MB NAND Flash
found on DA850/OMAP-L138 EVM. Currently it supports
only 1-bit ECC.

Signed-off-by: default avatarSudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent 700691f2

arch/arm/mach-davinci/board-da850-evm.c

+85 −0
Original line number Diff line number Diff line
@@ -18,6 +18,10 @@ 
#include <linux/i2c.h>

#include <linux/i2c/at24.h>

#include <linux/gpio.h>

#include <linux/platform_device.h>

#include <linux/mtd/mtd.h>

#include <linux/mtd/nand.h>

#include <linux/mtd/partitions.h>



#include <asm/mach-types.h>

#include <asm/mach/arch.h>
@@ -26,6 +30,7 @@ 
#include <mach/irqs.h>

#include <mach/cp_intc.h>

#include <mach/da8xx.h>

#include <mach/nand.h>



#define DA850_EVM_PHY_MASK		0x1

#define DA850_EVM_MDIO_FREQUENCY	2200000 /* PHY bus frequency */
@@ -36,6 +41,74 @@ 
#define DA850_MMCSD_CD_PIN		GPIO_TO_PIN(4, 0)

#define DA850_MMCSD_WP_PIN		GPIO_TO_PIN(4, 1)



/* DA850/OMAP-L138 EVM includes a 512 MByte large-page NAND flash

 * (128K blocks). It may be used instead of the (default) SPI flash

 * to boot, using TI's tools to install the secondary boot loader

 * (UBL) and U-Boot.

 */

struct mtd_partition da850_evm_nandflash_partition[] = {

	{

		.name		= "u-boot env",

		.offset		= 0,

		.size		= SZ_128K,

		.mask_flags	= MTD_WRITEABLE,

	 },

	{

		.name		= "UBL",

		.offset		= MTDPART_OFS_APPEND,

		.size		= SZ_128K,

		.mask_flags	= MTD_WRITEABLE,

	},

	{

		.name		= "u-boot",

		.offset		= MTDPART_OFS_APPEND,

		.size		= 4 * SZ_128K,

		.mask_flags	= MTD_WRITEABLE,

	},

	{

		.name		= "kernel",

		.offset		= 0x200000,

		.size		= SZ_2M,

		.mask_flags	= 0,

	},

	{

		.name		= "filesystem",

		.offset		= MTDPART_OFS_APPEND,

		.size		= MTDPART_SIZ_FULL,

		.mask_flags	= 0,

	},

};



static struct davinci_nand_pdata da850_evm_nandflash_data = {

	.parts		= da850_evm_nandflash_partition,

	.nr_parts	= ARRAY_SIZE(da850_evm_nandflash_partition),

	.ecc_mode	= NAND_ECC_HW,

	.options	= NAND_USE_FLASH_BBT,

};



static struct resource da850_evm_nandflash_resource[] = {

	{

		.start	= DA8XX_AEMIF_CS3_BASE,

		.end	= DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,

		.flags	= IORESOURCE_MEM,

	},

	{

		.start	= DA8XX_AEMIF_CTL_BASE,

		.end	= DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,

		.flags	= IORESOURCE_MEM,

	},

};



static struct platform_device da850_evm_nandflash_device = {

	.name		= "davinci_nand",

	.id		= 1,

	.dev		= {

		.platform_data	= &da850_evm_nandflash_data,

	},

	.num_resources	= ARRAY_SIZE(da850_evm_nandflash_resource),

	.resource	= da850_evm_nandflash_resource,

};



static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = {

	.bus_freq	= 100,	/* kHz */

	.bus_delay	= 0,	/* usec */
@@ -45,6 +118,10 @@ static struct davinci_uart_config da850_evm_uart_config __initdata = { 
	.enabled_uarts = 0x7,

};



static struct platform_device *da850_evm_devices[] __initdata = {

	&da850_evm_nandflash_device,

};



/* davinci da850 evm audio machine driver */

static u8 da850_iis_serializer_direction[] = {

	INACTIVE_MODE,	INACTIVE_MODE,	INACTIVE_MODE,	INACTIVE_MODE,
@@ -120,6 +197,14 @@ static __init void da850_evm_init(void) 
	struct davinci_soc_info *soc_info = &davinci_soc_info;

	int ret;



	ret = da8xx_pinmux_setup(da850_nand_pins);

	if (ret)

		pr_warning("da850_evm_init: nand mux setup failed: %d\n",

				ret);



	platform_add_devices(da850_evm_devices,

				ARRAY_SIZE(da850_evm_devices));



	ret = da8xx_register_edma();

	if (ret)

		pr_warning("da850_evm_init: edma registration failed: %d\n",

arch/arm/mach-davinci/da850.c

+31 −0
Original line number Diff line number Diff line
@@ -310,6 +310,13 @@ static struct clk mmcsd_clk = { 
	.lpsc		= DA8XX_LPSC0_MMC_SD,

};



static struct clk aemif_clk = {

	.name		= "aemif",

	.parent		= &pll0_sysclk3,

	.lpsc		= DA8XX_LPSC0_EMIF25,

	.flags		= ALWAYS_ENABLED,

};



static struct davinci_clk da850_clks[] = {

	CLK(NULL,		"ref",		&ref_clk),

	CLK(NULL,		"pll0",		&pll0_clk),
@@ -350,6 +357,7 @@ static struct davinci_clk da850_clks[] = { 
	CLK("davinci-mcasp.0",	NULL,		&mcasp_clk),

	CLK("da8xx_lcdc.0",	NULL,		&lcdc_clk),

	CLK("davinci_mmc.0",	NULL,		&mmcsd_clk),

	CLK(NULL,		"aemif",	&aemif_clk),

	CLK(NULL,		NULL,		NULL),

};
@@ -448,6 +456,21 @@ static const struct mux_config da850_pins[] = { 
	MUX_CFG(DA850, MMCSD0_DAT_3,	10,	20,	15,	2,	false)

	MUX_CFG(DA850, MMCSD0_CLK,	10,	0,	15,	2,	false)

	MUX_CFG(DA850, MMCSD0_CMD,	10,	4,	15,	2,	false)

	/* EMIF2.5/EMIFA function */

	MUX_CFG(DA850, EMA_D_7,		9,	0,	15,	1,	false)

	MUX_CFG(DA850, EMA_D_6,		9,	4,	15,	1,	false)

	MUX_CFG(DA850, EMA_D_5,		9,	8,	15,	1,	false)

	MUX_CFG(DA850, EMA_D_4,		9,	12,	15,	1,	false)

	MUX_CFG(DA850, EMA_D_3,		9,	16,	15,	1,	false)

	MUX_CFG(DA850, EMA_D_2,		9,	20,	15,	1,	false)

	MUX_CFG(DA850, EMA_D_1,		9,	24,	15,	1,	false)

	MUX_CFG(DA850, EMA_D_0,		9,	28,	15,	1,	false)

	MUX_CFG(DA850, EMA_A_1,		12,	24,	15,	1,	false)

	MUX_CFG(DA850, EMA_A_2,		12,	20,	15,	1,	false)

	MUX_CFG(DA850, NEMA_CS_3,	7,	4,	15,	1,	false)

	MUX_CFG(DA850, NEMA_CS_4,	7,	8,	15,	1,	false)

	MUX_CFG(DA850, NEMA_WE,		7,	16,	15,	1,	false)

	MUX_CFG(DA850, NEMA_OE,		7,	20,	15,	1,	false)

	/* GPIO function */

	MUX_CFG(DA850, GPIO2_15,	5,	0,	15,	8,	false)

	MUX_CFG(DA850, GPIO8_10,	18,	28,	15,	8,	false)
@@ -514,6 +537,14 @@ const short da850_mmcsd0_pins[] __initdata = { 
	-1

};



const short da850_nand_pins[] __initdata = {

	DA850_EMA_D_7, DA850_EMA_D_6, DA850_EMA_D_5, DA850_EMA_D_4,

	DA850_EMA_D_3, DA850_EMA_D_2, DA850_EMA_D_1, DA850_EMA_D_0,

	DA850_EMA_A_1, DA850_EMA_A_2, DA850_NEMA_CS_3, DA850_NEMA_CS_4,

	DA850_NEMA_WE, DA850_NEMA_OE,

	-1

};



/* FIQ are pri 0-1; otherwise 2-7, with 7 lowest priority */

static u8 da850_default_priorities[DA850_N_CP_INTC_IRQ] = {

	[IRQ_DA8XX_COMMTX]		= 7,

arch/arm/mach-davinci/include/mach/da8xx.h

+3 −0
Original line number Diff line number Diff line
@@ -40,6 +40,8 @@ 
#define DA8XX_PSC1_BASE		0x01e27000

#define DA8XX_LCD_CNTRL_BASE	0x01e13000

#define DA8XX_MMCSD0_BASE	0x01c40000

#define DA8XX_AEMIF_CS3_BASE	0x62000000

#define DA8XX_AEMIF_CTL_BASE	0x68000000



#define PINMUX0			0x00

#define PINMUX1			0x04
@@ -110,6 +112,7 @@ extern const short da850_cpgmac_pins[]; 
extern const short da850_mcasp_pins[];

extern const short da850_lcdcntl_pins[];

extern const short da850_mmcsd0_pins[];

extern const short da850_nand_pins[];



int da8xx_pinmux_setup(const short pins[]);

arch/arm/mach-davinci/include/mach/mux.h

+16 −0
Original line number Diff line number Diff line
@@ -806,6 +806,22 @@ enum davinci_da850_index { 
	DA850_MMCSD0_CLK,

	DA850_MMCSD0_CMD,



	/* EMIF2.5/EMIFA function */

	DA850_EMA_D_7,

	DA850_EMA_D_6,

	DA850_EMA_D_5,

	DA850_EMA_D_4,

	DA850_EMA_D_3,

	DA850_EMA_D_2,

	DA850_EMA_D_1,

	DA850_EMA_D_0,

	DA850_EMA_A_1,

	DA850_EMA_A_2,

	DA850_NEMA_CS_3,

	DA850_NEMA_CS_4,

	DA850_NEMA_WE,

	DA850_NEMA_OE,



	/* GPIO function */

	DA850_GPIO2_15,

	DA850_GPIO8_10,