[PATCH v2 5/6] davinci: add spi devices support for da850/omap-l138/am18x evm
Michael Williamson
michael.williamson at criticallink.com
Wed Feb 9 08:11:53 EST 2011
From: Sekhar Nori <nsekhar at ti.com>
This patch adds the on-board SPI flash device to the
DA850/OMAP-L138/AM18x 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 da850_evm_spi1_pdata to devices-da8xx.c]
Signed-off-by: Michael Williamson <michael.williamson at criticallink.com>
---
arch/arm/mach-davinci/board-da850-evm.c | 84 +++++++++++++++++++++++++++++++
1 files changed, 84 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 11f986b..487bd3a 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -29,6 +29,8 @@
#include <linux/regulator/machine.h>
#include <linux/regulator/tps6507x.h>
#include <linux/input/tps6507x-ts.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -38,6 +40,7 @@
#include <mach/nand.h>
#include <mach/mux.h>
#include <mach/aemif.h>
+#include <mach/spi.h>
#define DA850_EVM_PHY_ID "0:00"
#define DA850_LCD_PWR_PIN GPIO_TO_PIN(2, 8)
@@ -48,6 +51,85 @@
#define DA850_MII_MDIO_CLKEN_PIN GPIO_TO_PIN(2, 6)
+static struct mtd_partition da850evm_spiflash_part[] = {
+ [0] = {
+ .name = "UBL",
+ .offset = 0,
+ .size = SZ_64K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [1] = {
+ .name = "U-Boot",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_512K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [2] = {
+ .name = "U-Boot-Env",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_64K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [3] = {
+ .name = "Kernel",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_2M + SZ_512K,
+ .mask_flags = 0,
+ },
+ [4] = {
+ .name = "Filesystem",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_4M,
+ .mask_flags = 0,
+ },
+ [5] = {
+ .name = "MAC-Address",
+ .offset = SZ_8M - SZ_64K,
+ .size = SZ_64K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+};
+
+static struct flash_platform_data da850evm_spiflash_data = {
+ .name = "m25p80",
+ .parts = da850evm_spiflash_part,
+ .nr_parts = ARRAY_SIZE(da850evm_spiflash_part),
+ .type = "m25p64",
+};
+
+static struct davinci_spi_config da850evm_spiflash_cfg = {
+ .io_type = SPI_IO_TYPE_DMA,
+ .c2tdelay = 8,
+ .t2cdelay = 8,
+};
+
+static struct spi_board_info da850evm_spi_info[] = {
+ {
+ .modalias = "m25p80",
+ .platform_data = &da850evm_spiflash_data,
+ .controller_data = &da850evm_spiflash_cfg,
+ .mode = SPI_MODE_0,
+ .max_speed_hz = 30000000,
+ .bus_num = 1,
+ .chip_select = 0,
+ },
+};
+
+static void __init da850evm_init_spi1(struct spi_board_info *info, unsigned len)
+{
+ int ret;
+
+ ret = spi_register_board_info(info, len);
+ if (ret)
+ pr_warning("failed to register board info : %d\n", ret);
+
+ da8xx_spi_pdata[1].num_chipselect = len;
+
+ ret = da8xx_register_spi(1);
+ if (ret)
+ pr_warning("failed to register spi 1 device : %d\n", ret);
+}
+
static struct mtd_partition da850_evm_norflash_partition[] = {
{
.name = "bootloaders + env",
@@ -1167,6 +1249,8 @@ static __init void da850_evm_init(void)
if (ret)
pr_warning("da850_evm_init: suspend registration failed: %d\n",
ret);
+
+ da850evm_init_spi1(da850evm_spi_info, ARRAY_SIZE(da850evm_spi_info));
}
#ifdef CONFIG_SERIAL_8250_CONSOLE
--
1.7.0.4
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