omap3: cm-t3517: add support for NAND flash

add support for NAND flash.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-cm-t3517.c b/arch/arm/mach-omap2/board-cm-t3517.c
index 2c7082d6d772..4c26cf53a6e5 100644
--- a/arch/arm/mach-omap2/board-cm-t3517.c
+++ b/arch/arm/mach-omap2/board-cm-t3517.c
@@ -29,6 +29,9 @@
 #include <linux/gpio.h>
 #include <linux/leds.h>
 #include <linux/rtc-v3020.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -38,6 +41,8 @@
 #include <plat/common.h>
 #include <plat/control.h>
 #include <plat/usb.h>
+#include <plat/nand.h>
+#include <plat/gpmc.h>
 
 #include "mux.h"
 
@@ -143,6 +148,54 @@ static inline int cm_t3517_init_usbh(void)
 }
 #endif
 
+#if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
+#define NAND_BLOCK_SIZE         SZ_128K
+
+static struct mtd_partition cm_t3517_nand_partitions[] = {
+        {
+                .name           = "xloader",
+                .offset         = 0,                    /* Offset = 0x00000 */
+                .size           = 4 * NAND_BLOCK_SIZE,
+                .mask_flags     = MTD_WRITEABLE
+        },
+        {
+                .name           = "uboot",
+                .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
+                .size           = 15 * NAND_BLOCK_SIZE,
+        },
+        {
+                .name           = "uboot environment",
+                .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
+                .size           = 2 * NAND_BLOCK_SIZE,
+        },
+        {
+                .name           = "linux",
+                .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
+                .size           = 32 * NAND_BLOCK_SIZE,
+        },
+        {
+                .name           = "rootfs",
+                .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
+                .size           = MTDPART_SIZ_FULL,
+        },
+};
+
+static struct omap_nand_platform_data cm_t3517_nand_data = {
+        .parts                  = cm_t3517_nand_partitions,
+        .nr_parts               = ARRAY_SIZE(cm_t3517_nand_partitions),
+        .dma_channel            = -1,   /* disable DMA in OMAP NAND driver */
+        .cs                     = 0,
+};
+
+static void __init cm_t3517_init_nand(void)
+{
+        if (gpmc_nand_init(&cm_t3517_nand_data) < 0)
+                pr_err("CM-T3517: NAND initialization failed\n");
+}
+#else
+static inline void cm_t3517_init_nand(void) {}
+#endif
+
 static struct omap_board_config_kernel cm_t3517_config[] __initdata = {
 };
 
@@ -179,6 +232,7 @@ static void __init cm_t3517_init(void)
         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
         omap_serial_init();
         cm_t3517_init_leds();
+        cm_t3517_init_nand();
         cm_t3517_init_rtc();
         cm_t3517_init_usbh();
 }