Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ARM: shmobile: Lager:add SPI FLASH support on QSPI

Browse source 
This patch enables Spansion S25FL512SAGMFIG11 chip on QSPI,
Add support for the QSPI interface on Lager.

Signed-off-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Hiep Cao Minh 2013-10-22 11:21:12 +09:00 committed by Simon Horman
parent 90d423faa0
commit 24cf82f442
1 changed files with 64 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

64
arch/arm/mach-shmobile/board-lager.c
View file

@ -39,6 +39,11 @@
#include <mach/r8a7790.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/mtd.h>
#include <linux/spi/flash.h>
#include <linux/spi/rspi.h>
#include <linux/spi/spi.h>
/* DU */
static struct rcar_du_encoder_data lager_du_encoders[] = {
@ -166,6 +171,59 @@ static const struct resource ether_resources[] __initconst = {
DEFINE_RES_IRQ(gic_spi(162)),
};
/* SPI Flash memory (Spansion S25FL512SAGMFIG11 64Mb) */
static struct mtd_partition spi_flash_part[] = {
/* Reserved for user loader program, read-only */
{
.name = "loader",
.offset = 0,
.size = SZ_256K,
.mask_flags = MTD_WRITEABLE,
},
/* Reserved for user program, read-only */
{
.name = "user",
.offset = MTDPART_OFS_APPEND,
.size = SZ_4M,
.mask_flags = MTD_WRITEABLE,
},
/* All else is writable (e.g. JFFS2) */
{
.name = "flash",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0,
},
};
static struct flash_platform_data spi_flash_data = {
.name = "m25p80",
.parts = spi_flash_part,
.nr_parts = ARRAY_SIZE(spi_flash_part),
.type = "s25fl512s",
};
static const struct rspi_plat_data qspi_pdata __initconst = {
.num_chipselect = 1,
};
static const struct spi_board_info spi_info[] __initconst = {
{
.modalias = "m25p80",
.platform_data = &spi_flash_data,
.mode = SPI_MODE_0,
.max_speed_hz = 30000000,
.bus_num = 0,
.chip_select = 0,
},
};
/* QSPI resource */
static const struct resource qspi_resources[] __initconst = {
DEFINE_RES_MEM(0xe6b10000, 0x1000),
DEFINE_RES_IRQ(gic_spi(184)),
};
static const struct pinctrl_map lager_pinctrl_map[] = {
/* DU (CN10: ARGB0, CN13: LVDS) */
PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7790", "pfc-r8a7790",
@ -223,6 +281,12 @@ static void __init lager_add_standard_devices(void)
&ether_pdata, sizeof(ether_pdata));
lager_add_du_device();
platform_device_register_resndata(&platform_bus, "qspi", 0,
qspi_resources,
ARRAY_SIZE(qspi_resources),
&qspi_pdata, sizeof(qspi_pdata));
spi_register_board_info(spi_info, ARRAY_SIZE(spi_info));
}
/*