[PATCH v3 9/9] davinci: add spi devices support for da830/omap-l137/am17x evm
Michael Williamson
michael.williamson at criticallink.com
Tue Feb 22 08:37:04 EST 2011
From: Sekhar Nori <nsekhar at ti.com>
This patch adds the on-board SPI flash device to the
DA830/OMAP-L137/AM17x EVM. It also registers the SPI flash
device to the MTD subsystem.
Based on SPI flash device support for MityDSP-L138F platform.
Signed-off-by: Sekhar Nori <nsekhar at ti.com>
[michael.williamson at criticallink.com: moved da830evm_spi0_pdata to devices-da8xx.c]
Signed-off-by: Michael Williamson <michael.williamson at criticallink.com>
Acked-by: Sekhar Nori <nsekhar at ti.com>
---
arch/arm/mach-davinci/board-da830-evm.c | 80 +++++++++++++++++++++++++++++++
1 files changed, 80 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index b52a3a1..93a47e3 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -20,6 +20,8 @@
#include <linux/i2c/at24.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -30,6 +32,7 @@
#include <mach/da8xx.h>
#include <mach/usb.h>
#include <mach/aemif.h>
+#include <mach/spi.h>
#define DA830_EVM_PHY_ID ""
/*
@@ -534,6 +537,81 @@ static struct edma_rsv_info da830_edma_rsv[] = {
},
};
+static struct mtd_partition da830evm_spiflash_part[] = {
+ [0] = {
+ .name = "DSP-UBL",
+ .offset = 0,
+ .size = SZ_8K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [1] = {
+ .name = "ARM-UBL",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_16K + SZ_8K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [2] = {
+ .name = "U-Boot",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_256K - SZ_32K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [3] = {
+ .name = "U-Boot-Environment",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_16K,
+ .mask_flags = 0,
+ },
+ [4] = {
+ .name = "Kernel",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ .mask_flags = 0,
+ },
+};
+
+static struct flash_platform_data da830evm_spiflash_data = {
+ .name = "m25p80",
+ .parts = da830evm_spiflash_part,
+ .nr_parts = ARRAY_SIZE(da830evm_spiflash_part),
+ .type = "w25x32",
+};
+
+static struct davinci_spi_config da830evm_spiflash_cfg = {
+ .io_type = SPI_IO_TYPE_DMA,
+ .c2tdelay = 8,
+ .t2cdelay = 8,
+};
+
+static struct spi_board_info da830evm_spi_info[] = {
+ {
+ .modalias = "m25p80",
+ .platform_data = &da830evm_spiflash_data,
+ .controller_data = &da830evm_spiflash_cfg,
+ .mode = SPI_MODE_0,
+ .max_speed_hz = 30000000,
+ .bus_num = 0,
+ .chip_select = 0,
+ },
+};
+
+static void __init da830evm_init_spi0(struct spi_board_info *info, unsigned len)
+{
+ int ret;
+
+ ret = spi_register_board_info(info, len);
+ if (ret)
+ pr_warning("%s: failed to register board info : %d\n",
+ __func__, ret);
+
+ da8xx_spi_pdata[0].num_chipselect = len;
+
+ ret = da8xx_register_spi(0);
+ if (ret)
+ pr_warning("%s: failed to register spi 0 device : %d\n",
+ __func__, ret);
+}
+
static __init void da830_evm_init(void)
{
struct davinci_soc_info *soc_info = &davinci_soc_info;
@@ -590,6 +668,8 @@ static __init void da830_evm_init(void)
ret = da8xx_register_rtc();
if (ret)
pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
+
+ da830evm_init_spi0(da830evm_spi_info, ARRAY_SIZE(da830evm_spi_info));
}
#ifdef CONFIG_SERIAL_8250_CONSOLE
--
1.7.0.4
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