[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 15c5b9d..83a4cdf 100644
--- 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 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();
}