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[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>
This commit is contained in:
Mike Rapoport 2008-10-05 10:29:59 +01:00 committed by Russell King
parent 8616e2fb69
commit 49a7061dca
1 changed files with 116 additions and 0 deletions
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116
arch/arm/mach-pxa/cm-x255.c
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@ -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();
}