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authorMichael Williamson <[michael.williamson@criticallink.com]>2011-02-24 10:22:47 +0530
committerKevin Hilman <khilman@ti.com>2011-03-11 10:48:29 -0800
commitdd561c6a77edd5a106484901d8a5d3d5eb4a54b5 (patch)
treeed27674a16c6a6c9a098473ebf12b57ff75d54eb /arch/arm
parentdavinci: da8xx: add spi resources and registration routine (diff)
downloadlinux-dev-dd561c6a77edd5a106484901d8a5d3d5eb4a54b5.tar.xz
linux-dev-dd561c6a77edd5a106484901d8a5d3d5eb4a54b5.zip
davinci: add spi devices support for MityDSP-L138/MityARM-1808 platform
This patch adds support for accessing the on board SPI NOR FLASH device for MityDSP-L138 and MityARM-1808 SoMs. Signed-off-by: Michael Williamson <michael.williamson@criticallink.com> Tested-by: Michael Williamson <michael.williamson@criticallink.com> Acked-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-davinci/board-mityomapl138.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-mityomapl138.c b/arch/arm/mach-davinci/board-mityomapl138.c
index 0ea59327dc28..2aa79c54f98e 100644
--- a/arch/arm/mach-davinci/board-mityomapl138.c
+++ b/arch/arm/mach-davinci/board-mityomapl138.c
@@ -17,6 +17,8 @@
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/etherdevice.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -25,6 +27,7 @@
#include <mach/da8xx.h>
#include <mach/nand.h>
#include <mach/mux.h>
+#include <mach/spi.h>
#define MITYOMAPL138_PHY_ID "0:03"
@@ -294,6 +297,82 @@ static int __init pmic_tps65023_init(void)
}
/*
+ * SPI Devices:
+ * SPI1_CS0: 8M Flash ST-M25P64-VME6G
+ */
+static struct mtd_partition spi_flash_partitions[] = {
+ [0] = {
+ .name = "ubl",
+ .offset = 0,
+ .size = SZ_64K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [1] = {
+ .name = "u-boot",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_512K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [2] = {
+ .name = "u-boot-env",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_64K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [3] = {
+ .name = "periph-config",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_64K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [4] = {
+ .name = "reserved",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_256K + SZ_64K,
+ },
+ [5] = {
+ .name = "kernel",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_2M + SZ_1M,
+ },
+ [6] = {
+ .name = "fpga",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_2M,
+ },
+ [7] = {
+ .name = "spare",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ },
+};
+
+static struct flash_platform_data mityomapl138_spi_flash_data = {
+ .name = "m25p80",
+ .parts = spi_flash_partitions,
+ .nr_parts = ARRAY_SIZE(spi_flash_partitions),
+ .type = "m24p64",
+};
+
+static struct davinci_spi_config spi_eprom_config = {
+ .io_type = SPI_IO_TYPE_DMA,
+ .c2tdelay = 8,
+ .t2cdelay = 8,
+};
+
+static struct spi_board_info mityomapl138_spi_flash_info[] = {
+ {
+ .modalias = "m25p80",
+ .platform_data = &mityomapl138_spi_flash_data,
+ .controller_data = &spi_eprom_config,
+ .mode = SPI_MODE_0,
+ .max_speed_hz = 30000000,
+ .bus_num = 1,
+ .chip_select = 0,
+ },
+};
+
+/*
* MityDSP-L138 includes a 256 MByte large-page NAND flash
* (128K blocks).
*/
@@ -448,6 +527,11 @@ static void __init mityomapl138_init(void)
mityomapl138_setup_nand();
+ ret = da8xx_register_spi(1, mityomapl138_spi_flash_info,
+ ARRAY_SIZE(mityomapl138_spi_flash_info));
+ if (ret)
+ pr_warning("spi 1 registration failed: %d\n", ret);
+
mityomapl138_config_emac();
ret = da8xx_register_rtc();