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authorSandeep Paulraj <s-paulraj@ti.com>2009-06-20 14:15:51 -0400
committerKevin Hilman <khilman@deeprootsystems.com>2009-08-26 10:56:59 +0300
commit37b798da5df377521a8cd32a82467aa2d431f33e (patch)
treee06ada47d5397cd3a7d57dc0ce030ff56953a3ff /arch/arm/mach-davinci
parenta45c8ba30bca0c3257785cae28680781fd356a85 (diff)
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davinci: dm365: add NAND support to EVM board
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci')
-rw-r--r--arch/arm/mach-davinci/board-dm365-evm.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c
index e62d1ab3bb2a..3675e844b9b1 100644
--- a/arch/arm/mach-davinci/board-dm365-evm.c
+++ b/arch/arm/mach-davinci/board-dm365-evm.c
@@ -20,6 +20,9 @@
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/i2c/at24.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -34,10 +37,84 @@
#include <mach/serial.h>
#include <mach/common.h>
#include <mach/mmc.h>
+#include <mach/nand.h>
+
+#define DM365_ASYNC_EMIF_CONTROL_BASE 0x01d10000
+#define DM365_ASYNC_EMIF_DATA_CE0_BASE 0x02000000
#define DM365_EVM_PHY_MASK (0x2)
#define DM365_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
+/* NOTE: this is geared for the standard config, with a socketed
+ * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you
+ * swap chips with a different block size, partitioning will
+ * need to be changed. This NAND chip MT29F16G08FAA is the default
+ * NAND shipped with the Spectrum Digital DM365 EVM
+ */
+#define NAND_BLOCK_SIZE SZ_128K
+
+static struct mtd_partition davinci_nand_partitions[] = {
+ {
+ /* UBL (a few copies) plus U-Boot */
+ .name = "bootloader",
+ .offset = 0,
+ .size = 28 * NAND_BLOCK_SIZE,
+ .mask_flags = MTD_WRITEABLE, /* force read-only */
+ }, {
+ /* U-Boot environment */
+ .name = "params",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 2 * NAND_BLOCK_SIZE,
+ .mask_flags = 0,
+ }, {
+ .name = "kernel",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_4M,
+ .mask_flags = 0,
+ }, {
+ .name = "filesystem1",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_512M,
+ .mask_flags = 0,
+ }, {
+ .name = "filesystem2",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ .mask_flags = 0,
+ }
+ /* two blocks with bad block table (and mirror) at the end */
+};
+
+static struct davinci_nand_pdata davinci_nand_data = {
+ .mask_chipsel = BIT(14),
+ .parts = davinci_nand_partitions,
+ .nr_parts = ARRAY_SIZE(davinci_nand_partitions),
+ .ecc_mode = NAND_ECC_HW,
+ .options = NAND_USE_FLASH_BBT,
+};
+
+static struct resource davinci_nand_resources[] = {
+ {
+ .start = DM365_ASYNC_EMIF_DATA_CE0_BASE,
+ .end = DM365_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = DM365_ASYNC_EMIF_CONTROL_BASE,
+ .end = DM365_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,
+ },
+};
+
static struct at24_platform_data eeprom_info = {
.byte_len = (256*1024) / 8,
.page_size = 64,
@@ -122,6 +199,10 @@ static void __init evm_init_i2c(void)
i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
}
+static struct platform_device *dm365_evm_devices[] __initdata = {
+ &davinci_nand_device,
+};
+
static struct davinci_uart_config uart_config __initdata = {
.enabled_uarts = (1 << 0),
};
@@ -135,6 +216,9 @@ static __init void dm365_evm_init(void)
{
struct davinci_soc_info *soc_info = &davinci_soc_info;
+ platform_add_devices(dm365_evm_devices,
+ ARRAY_SIZE(dm365_evm_devices));
+
evm_init_i2c();
davinci_serial_init(&uart_config);