[ARM] 5284/1: pxa: cm-x255: add NOR and NAND flash support

This patch adds support for NOR and NAND flashes on CM-X255.
The NAND flash support uses not yet merged GPIO NAND driver.

Signed-off-by: Russ Dill <russ.dill@gmail.com>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-pxa/cm-x255.c b/arch/arm/mach-pxa/cm-x255.c
index 15c5b9dc63832fa8cdf88ebc03038673eb80cf87..83a4cdf081760c342132ebe358386e13dea52ce3 100644 (file)
--- a/arch/arm/mach-pxa/cm-x255.c
+++ b/arch/arm/mach-pxa/cm-x255.c
@@ -12,6 +12,9 @@
 #include <linux/platform_device.h>
 #include <linux/irq.h>
 #include <linux/gpio.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/nand-gpio.h>
 
 #include <linux/spi/spi.h>
 
@@ -26,6 +29,11 @@
 
 #include "generic.h"
 
+#define GPIO_NAND_CS   (5)
+#define GPIO_NAND_ALE  (4)
+#define GPIO_NAND_CLE  (3)
+#define GPIO_NAND_RB   (10)
+
 static unsigned long cmx255_pin_config[] = {
        /* AC'97 */
        GPIO28_AC97_BITCLK,
@@ -134,9 +142,117 @@ static void __init cmx255_init_rtc(void)
 static inline void cmx255_init_rtc(void) {}
 #endif
 
+#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
+static struct mtd_partition cmx255_nor_partitions[] = {
+       {
+               .name           = "ARMmon",
+               .size           = 0x00030000,
+               .offset         = 0,
+               .mask_flags     = MTD_WRITEABLE  /* force read-only */
+       } , {
+               .name           = "ARMmon setup block",
+               .size           = 0x00010000,
+               .offset         = MTDPART_OFS_APPEND,
+               .mask_flags     = MTD_WRITEABLE  /* force read-only */
+       } , {
+               .name           = "kernel",
+               .size           = 0x00160000,
+               .offset         = MTDPART_OFS_APPEND,
+       } , {
+               .name           = "ramdisk",
+               .size           = MTDPART_SIZ_FULL,
+               .offset         = MTDPART_OFS_APPEND
+       }
+};
+
+static struct physmap_flash_data cmx255_nor_flash_data[] = {
+       {
+               .width          = 2,    /* bankwidth in bytes */
+               .parts          = cmx255_nor_partitions,
+               .nr_parts       = ARRAY_SIZE(cmx255_nor_partitions)
+       }
+};
+
+static struct resource cmx255_nor_resource = {
+       .start  = PXA_CS0_PHYS,
+       .end    = PXA_CS0_PHYS + SZ_8M - 1,
+       .flags  = IORESOURCE_MEM,
+};
+
+static struct platform_device cmx255_nor = {
+       .name   = "physmap-flash",
+       .id     = -1,
+       .dev    = {
+               .platform_data = cmx255_nor_flash_data,
+       },
+       .resource = &cmx255_nor_resource,
+       .num_resources = 1,
+};
+
+static void __init cmx255_init_nor(void)
+{
+       platform_device_register(&cmx255_nor);
+}
+#else
+static inline void cmx255_init_nor(void) {}
+#endif
+
+#if defined(CONFIG_MTD_NAND_GPIO) || defined(CONFIG_MTD_NAND_GPIO_MODULE)
+static struct resource cmx255_nand_resource[] = {
+       [0] = {
+               .start = PXA_CS1_PHYS,
+               .end   = PXA_CS1_PHYS + 11,
+               .flags = IORESOURCE_MEM,
+       },
+       [1] = {
+               .start = PXA_CS5_PHYS,
+               .end   = PXA_CS5_PHYS + 3,
+               .flags = IORESOURCE_MEM,
+       },
+};
+
+static struct mtd_partition cmx255_nand_parts[] = {
+       [0] = {
+               .name   = "cmx255-nand",
+               .size   = MTDPART_SIZ_FULL,
+               .offset = 0,
+       },
+};
+
+static struct gpio_nand_platdata cmx255_nand_platdata = {
+       .gpio_nce = GPIO_NAND_CS,
+       .gpio_cle = GPIO_NAND_CLE,
+       .gpio_ale = GPIO_NAND_ALE,
+       .gpio_rdy = GPIO_NAND_RB,
+       .gpio_nwp = -1,
+       .parts = cmx255_nand_parts,
+       .num_parts = ARRAY_SIZE(cmx255_nand_parts),
+       .chip_delay = 25,
+};
+
+static struct platform_device cmx255_nand = {
+       .name           = "gpio-nand",
+       .num_resources  = ARRAY_SIZE(cmx255_nand_resource),
+       .resource       = cmx255_nand_resource,
+       .id             = -1,
+       .dev            = {
+               .platform_data = &cmx255_nand_platdata,
+       }
+};
+
+static void __init cmx255_init_nand(void)
+{
+       platform_device_register(&cmx255_nand);
+}
+#else
+static inline void cmx255_init_nand(void) {}
+#endif
+
 void __init cmx255_init(void)
 {
        pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx255_pin_config));
 
        cmx255_init_rtc();
+       cmx255_init_nor();
+       cmx255_init_nand();
 }