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davinci: Add NAND support for DA830/OMAP-L137 EVM platform 

Add support for NAND flash parts on the DA830/OMAP-L137 EVM
User Interface board.  This includes overriding the default
bad block tables used by the davinci_nand driver.

Signed-off-by: David A. Griego <dgriego@mvista.com>
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
David A. Griego 2009-09-18 14:15:18 -07:00 committed by Kevin Hilman
parent ca6a272a4f
commit 733975a314
2 changed files with 136 additions and 0 deletions
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5
arch/arm/mach-davinci/Kconfig
View File

@ -122,6 +122,11 @@ config DA830_UI_LCD
Say Y here to use the LCD as a framebuffer or simple character
display.
config DA830_UI_NAND
bool "NAND flash"
help
Say Y here to use the NAND flash. Do not forget to setup
the switch correctly.
endchoice
config MACH_DAVINCI_DA850_EVM

131
arch/arm/mach-davinci/board-da830-evm.c
View File

@ -14,21 +14,28 @@
#include <linux/console.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c/pcf857x.h>
#include <linux/i2c/at24.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/cp_intc.h>
#include <mach/mux.h>
#include <mach/nand.h>
#include <mach/da8xx.h>
#include <mach/usb.h>
#define DA830_EVM_PHY_MASK 0x0
#define DA830_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */
#define DA830_EMIF25_ASYNC_DATA_CE3_BASE 0x62000000
#define DA830_EMIF25_CONTROL_BASE 0x68000000
static struct at24_platform_data da830_evm_i2c_eeprom_info = {
.byte_len = SZ_256K / 8,
.page_size = 64,
@ -313,6 +320,118 @@ static inline void da830_evm_init_mmc(void)
}
}
#ifdef CONFIG_DA830_UI_NAND
static struct mtd_partition da830_evm_nand_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
[0] = {
.name = "bootloader",
.offset = 0,
.size = SZ_128K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
/* bootloader params in the next sector */
[1] = {
.name = "params",
.offset = MTDPART_OFS_APPEND,
.size = SZ_128K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
/* kernel */
[2] = {
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M,
.mask_flags = 0,
},
/* file system */
[3] = {
.name = "filesystem",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0,
}
};
/* flash bbt decriptors */
static uint8_t da830_evm_nand_bbt_pattern[] = { 'B', 'b', 't', '0' };
static uint8_t da830_evm_nand_mirror_pattern[] = { '1', 't', 'b', 'B' };
static struct nand_bbt_descr da830_evm_nand_bbt_main_descr = {
.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
NAND_BBT_WRITE | NAND_BBT_2BIT |
NAND_BBT_VERSION | NAND_BBT_PERCHIP,
.offs = 2,
.len = 4,
.veroffs = 16,
.maxblocks = 4,
.pattern = da830_evm_nand_bbt_pattern
};
static struct nand_bbt_descr da830_evm_nand_bbt_mirror_descr = {
.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
NAND_BBT_WRITE | NAND_BBT_2BIT |
NAND_BBT_VERSION | NAND_BBT_PERCHIP,
.offs = 2,
.len = 4,
.veroffs = 16,
.maxblocks = 4,
.pattern = da830_evm_nand_mirror_pattern
};
static struct davinci_nand_pdata da830_evm_nand_pdata = {
.parts = da830_evm_nand_partitions,
.nr_parts = ARRAY_SIZE(da830_evm_nand_partitions),
.ecc_mode = NAND_ECC_HW,
.ecc_bits = 4,
.options = NAND_USE_FLASH_BBT,
.bbt_td = &da830_evm_nand_bbt_main_descr,
.bbt_md = &da830_evm_nand_bbt_mirror_descr,
};
static struct resource da830_evm_nand_resources[] = {
[0] = { /* First memory resource is NAND I/O window */
.start = DA830_EMIF25_ASYNC_DATA_CE3_BASE,
.end = DA830_EMIF25_ASYNC_DATA_CE3_BASE + PAGE_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[1] = { /* Second memory resource is AEMIF control registers */
.start = DA830_EMIF25_CONTROL_BASE,
.end = DA830_EMIF25_CONTROL_BASE + SZ_32K - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device da830_evm_nand_device = {
.name = "davinci_nand",
.id = 1,
.dev = {
.platform_data = &da830_evm_nand_pdata,
},
.num_resources = ARRAY_SIZE(da830_evm_nand_resources),
.resource = da830_evm_nand_resources,
};
#endif
static struct platform_device *da830_evm_devices[] __initdata = {
#ifdef CONFIG_DA830_UI_NAND
&da830_evm_nand_device,
#endif
};
/*
* UI board NAND/NOR flashes only use 8-bit data bus.
*/
static const short da830_evm_emif25_pins[] = {
DA830_EMA_D_0, DA830_EMA_D_1, DA830_EMA_D_2, DA830_EMA_D_3,
DA830_EMA_D_4, DA830_EMA_D_5, DA830_EMA_D_6, DA830_EMA_D_7,
DA830_EMA_A_0, DA830_EMA_A_1, DA830_EMA_A_2, DA830_EMA_A_3,
DA830_EMA_A_4, DA830_EMA_A_5, DA830_EMA_A_6, DA830_EMA_A_7,
DA830_EMA_A_8, DA830_EMA_A_9, DA830_EMA_A_10, DA830_EMA_A_11,
DA830_EMA_A_12, DA830_EMA_BA_0, DA830_EMA_BA_1, DA830_NEMA_WE,
DA830_NEMA_CS_2, DA830_NEMA_CS_3, DA830_NEMA_OE, DA830_EMA_WAIT_0,
-1
};
static __init void da830_evm_init(void)
{
struct davinci_soc_info *soc_info = &davinci_soc_info;
@ -367,6 +486,7 @@ static __init void da830_evm_init(void)
da830_evm_init_mmc();
#ifdef CONFIG_DA830_UI
#ifdef CONFIG_DA830_UI_LCD
ret = da8xx_pinmux_setup(da830_lcdcntl_pins);
if (ret)
@ -376,6 +496,17 @@ static __init void da830_evm_init(void)
ret = da8xx_register_lcdc(&sharp_lcd035q3dg01_pdata);
if (ret)
pr_warning("da830_evm_init: lcd setup failed: %d\n", ret);
#else /* Must be NAND or NOR */
ret = da8xx_pinmux_setup(da830_evm_emif25_pins);
if (ret)
pr_warning("da830_evm_init: emif25 mux setup failed: %d\n",
ret);
ret = platform_add_devices(da830_evm_devices,
ARRAY_SIZE(da830_evm_devices));
if (ret)
pr_warning("da830_evm_init: EVM devices not added\n");
#endif
#endif
ret = da8xx_register_rtc();