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author | Sudhakar Rajashekhara <sudhakar.raj@ti.com> | 2009-08-13 17:36:25 -0400 |
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committer | Kevin Hilman <khilman@deeprootsystems.com> | 2009-08-26 11:55:56 +0300 |
commit | 7c5ec6095a7d29c89ee050281faa068a374a5ac6 (patch) | |
tree | 5ac3611c87a80e6c48fd3dbc39fbd562af624050 /arch/arm/mach-davinci/board-da850-evm.c | |
parent | 38beb929f2c33a37bf3af6103c064a9edfbe242b (diff) | |
download | op-kernel-dev-7c5ec6095a7d29c89ee050281faa068a374a5ac6.zip op-kernel-dev-7c5ec6095a7d29c89ee050281faa068a374a5ac6.tar.gz |
davinci: Add NOR flash support for da850/omap-l138
This patch adds platform data for the 8MB NOR flash
found on da850/omap-l138 EVM. Both NOR and NAND can
co-exist on da850/omap-l138 as they are using different
chip selects.
Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci/board-da850-evm.c')
-rw-r--r-- | arch/arm/mach-davinci/board-da850-evm.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c index 62d37cb..70a2f48 100644 --- a/arch/arm/mach-davinci/board-da850-evm.c +++ b/arch/arm/mach-davinci/board-da850-evm.c @@ -22,6 +22,7 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> +#include <linux/mtd/physmap.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -41,6 +42,39 @@ #define DA850_MMCSD_CD_PIN GPIO_TO_PIN(4, 0) #define DA850_MMCSD_WP_PIN GPIO_TO_PIN(4, 1) +static struct mtd_partition da850_evm_norflash_partition[] = { + { + .name = "NOR filesystem", + .offset = 0, + .size = MTDPART_SIZ_FULL, + .mask_flags = 0, + }, +}; + +static struct physmap_flash_data da850_evm_norflash_data = { + .width = 2, + .parts = da850_evm_norflash_partition, + .nr_parts = ARRAY_SIZE(da850_evm_norflash_partition), +}; + +static struct resource da850_evm_norflash_resource[] = { + { + .start = DA8XX_AEMIF_CS2_BASE, + .end = DA8XX_AEMIF_CS2_BASE + SZ_32M - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device da850_evm_norflash_device = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &da850_evm_norflash_data, + }, + .num_resources = 1, + .resource = da850_evm_norflash_resource, +}; + /* 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 @@ -120,6 +154,7 @@ static struct davinci_uart_config da850_evm_uart_config __initdata = { static struct platform_device *da850_evm_devices[] __initdata = { &da850_evm_nandflash_device, + &da850_evm_norflash_device, }; /* davinci da850 evm audio machine driver */ @@ -192,6 +227,23 @@ static int da850_lcd_hw_init(void) return 0; } +#define DA8XX_AEMIF_CE2CFG_OFFSET 0x10 +#define DA8XX_AEMIF_ASIZE_16BIT 0x1 + +static void __init da850_evm_init_nor(void) +{ + void __iomem *aemif_addr; + + aemif_addr = ioremap(DA8XX_AEMIF_CTL_BASE, SZ_32K); + + /* Configure data bus width of CS2 to 16 bit */ + writel(readl(aemif_addr + DA8XX_AEMIF_CE2CFG_OFFSET) | + DA8XX_AEMIF_ASIZE_16BIT, + aemif_addr + DA8XX_AEMIF_CE2CFG_OFFSET); + + iounmap(aemif_addr); +} + static __init void da850_evm_init(void) { struct davinci_soc_info *soc_info = &davinci_soc_info; @@ -202,6 +254,13 @@ static __init void da850_evm_init(void) pr_warning("da850_evm_init: nand mux setup failed: %d\n", ret); + ret = da8xx_pinmux_setup(da850_nor_pins); + if (ret) + pr_warning("da850_evm_init: nor mux setup failed: %d\n", + ret); + + da850_evm_init_nor(); + platform_add_devices(da850_evm_devices, ARRAY_SIZE(da850_evm_devices)); |