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omap3: Add support for flash on IGEP v2 board 

This patch adds support for flashes on IGEP v2 boards. For now
only OneNAND is supported.

Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Enric Balletbo i Serra 2010-02-17 14:09:26 -08:00 committed by Tony Lindgren
parent 691de27f3c
commit cddb483a74
1 changed files with 101 additions and 0 deletions
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101
arch/arm/mach-omap2/board-igep0020.c
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@ -29,6 +29,7 @@
#include <plat/gpmc.h>
#include <plat/usb.h>
#include <plat/display.h>
#include <plat/onenand.h>
#include "mux.h"
#include "hsmmc.h"
@ -41,6 +42,105 @@
#define IGEP2_GPIO_LED1_RED 28
#define IGEP2_GPIO_DVI_PUP 170
#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)
#define ONENAND_MAP 0x20000000
/* NAND04GR4E1A ( x2 Flash built-in COMBO POP MEMORY )
* Since the device is equipped with two DataRAMs, and two-plane NAND
* Flash memory array, these two component enables simultaneous program
* of 4KiB. Plane1 has only even blocks such as block0, block2, block4
* while Plane2 has only odd blocks such as block1, block3, block5.
* So MTD regards it as 4KiB page size and 256KiB block size 64*(2*2048)
*/
static struct mtd_partition igep2_onenand_partitions[] = {
{
.name = "X-Loader",
.offset = 0,
.size = 2 * (64*(2*2048))
},
{
.name = "U-Boot",
.offset = MTDPART_OFS_APPEND,
.size = 6 * (64*(2*2048)),
},
{
.name = "Environment",
.offset = MTDPART_OFS_APPEND,
.size = 2 * (64*(2*2048)),
},
{
.name = "Kernel",
.offset = MTDPART_OFS_APPEND,
.size = 12 * (64*(2*2048)),
},
{
.name = "File System",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
},
};
static int igep2_onenand_setup(void __iomem *onenand_base, int freq)
{
/* nothing is required to be setup for onenand as of now */
return 0;
}
static struct omap_onenand_platform_data igep2_onenand_data = {
.parts = igep2_onenand_partitions,
.nr_parts = ARRAY_SIZE(igep2_onenand_partitions),
.onenand_setup = igep2_onenand_setup,
.dma_channel = -1, /* disable DMA in OMAP OneNAND driver */
};
static struct platform_device igep2_onenand_device = {
.name = "omap2-onenand",
.id = -1,
.dev = {
.platform_data = &igep2_onenand_data,
},
};
void __init igep2_flash_init(void)
{
u8 cs = 0;
u8 onenandcs = GPMC_CS_NUM + 1;
while (cs < GPMC_CS_NUM) {
u32 ret = 0;
ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
/* Check if NAND/oneNAND is configured */
if ((ret & 0xC00) == 0x800)
/* NAND found */
pr_err("IGEP v2: Unsupported NAND found\n");
else {
ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7);
if ((ret & 0x3F) == (ONENAND_MAP >> 24))
/* ONENAND found */
onenandcs = cs;
}
cs++;
}
if (onenandcs > GPMC_CS_NUM) {
pr_err("IGEP v2: Unable to find configuration in GPMC\n");
return;
}
if (onenandcs < GPMC_CS_NUM) {
igep2_onenand_data.cs = onenandcs;
if (platform_device_register(&igep2_onenand_device) < 0)
pr_err("IGEP v2: Unable to register OneNAND device\n");
}
}
#else
void __init igep2_flash_init(void) {}
#endif
#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
#include <linux/smsc911x.h>
@ -314,6 +414,7 @@ static void __init igep2_init(void)
usb_musb_init();
usb_ehci_init(&ehci_pdata);
igep2_flash_init();
igep2_display_init();
igep2_init_smsc911x();