davinci: add spi devices support for da850/omap-l138/am18x evm

This patch adds the on-board SPI flash device to the
DA850/OMAP-L138/AM18x EVM. It also registers the SPI flash
device to the MTD subsystem.

Based on SPI flash device support for MityDSP-L138F platform.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
[michael.williamson@criticallink.com: moved da850_evm_spi1_pdata to devices-da8xx.c]
[michael.williamson@criticallink.com: moved da850evm_init_spi1 to devices-da8xx.c]
Signed-off-by: Michael Williamson <michael.williamson@criticallink.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 11f986bec89..0aef6b2eb13 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -29,6 +29,8 @@
 #include <linux/regulator/machine.h>
 #include <linux/regulator/tps6507x.h>
 #include <linux/input/tps6507x-ts.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -38,6 +40,7 @@
 #include <mach/nand.h>
 #include <mach/mux.h>
 #include <mach/aemif.h>
+#include <mach/spi.h>
 
 #define DA850_EVM_PHY_ID                "0:00"
 #define DA850_LCD_PWR_PIN               GPIO_TO_PIN(2, 8)
@@ -48,6 +51,70 @@
 
 #define DA850_MII_MDIO_CLKEN_PIN        GPIO_TO_PIN(2, 6)
 
+static struct mtd_partition da850evm_spiflash_part[] = {
+        [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 = "Kernel",
+                .offset = MTDPART_OFS_APPEND,
+                .size = SZ_2M + SZ_512K,
+                .mask_flags = 0,
+        },
+        [4] = {
+                .name = "Filesystem",
+                .offset = MTDPART_OFS_APPEND,
+                .size = SZ_4M,
+                .mask_flags = 0,
+        },
+        [5] = {
+                .name = "MAC-Address",
+                .offset = SZ_8M - SZ_64K,
+                .size = SZ_64K,
+                .mask_flags = MTD_WRITEABLE,
+        },
+};
+
+static struct flash_platform_data da850evm_spiflash_data = {
+        .name           = "m25p80",
+        .parts          = da850evm_spiflash_part,
+        .nr_parts       = ARRAY_SIZE(da850evm_spiflash_part),
+        .type           = "m25p64",
+};
+
+static struct davinci_spi_config da850evm_spiflash_cfg = {
+        .io_type        = SPI_IO_TYPE_DMA,
+        .c2tdelay       = 8,
+        .t2cdelay       = 8,
+};
+
+static struct spi_board_info da850evm_spi_info[] = {
+        {
+                .modalias               = "m25p80",
+                .platform_data          = &da850evm_spiflash_data,
+                .controller_data        = &da850evm_spiflash_cfg,
+                .mode                   = SPI_MODE_0,
+                .max_speed_hz           = 30000000,
+                .bus_num                = 1,
+                .chip_select            = 0,
+        },
+};
+
 static struct mtd_partition da850_evm_norflash_partition[] = {
         {
                 .name           = "bootloaders + env",
@@ -1167,6 +1234,12 @@ static __init void da850_evm_init(void)
         if (ret)
                 pr_warning("da850_evm_init: suspend registration failed: %d\n",
                                 ret);
+
+        ret = da8xx_register_spi(1, da850evm_spi_info,
+                                 ARRAY_SIZE(da850evm_spi_info));
+        if (ret)
+                pr_warning("da850_evm_init: spi 1 registration failed: %d\n",
+                                ret);
 }
 
 #ifdef CONFIG_SERIAL_8250_CONSOLE