From: michael.williamson@criticallink.com (Michael Williamson)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 4/6] davinci: add spi devices support for MityDSP-L138/MityARM-1808 platform
Date: Wed, 9 Feb 2011 08:11:52 -0500 [thread overview]
Message-ID: <1297257114-764-5-git-send-email-michael.williamson@criticallink.com> (raw)
In-Reply-To: <1297257114-764-1-git-send-email-michael.williamson@criticallink.com>
This patch adds support for accessing the on board SPI NOR FLASH
device for MityDSP-L138 and MityARM-1808 SoMs.
Signed-off-by: Michael Williamson <michael.williamson@criticallink.com>
Tested-by: Michael Williamson <michael.williamson@criticallink.com>
---
arch/arm/mach-davinci/board-mityomapl138.c | 100 ++++++++++++++++++++++++++++
1 files changed, 100 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-mityomapl138.c b/arch/arm/mach-davinci/board-mityomapl138.c
index 0ea5932..dc4c3f1 100644
--- a/arch/arm/mach-davinci/board-mityomapl138.c
+++ b/arch/arm/mach-davinci/board-mityomapl138.c
@@ -17,6 +17,8 @@
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/etherdevice.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -25,6 +27,7 @@
#include <mach/da8xx.h>
#include <mach/nand.h>
#include <mach/mux.h>
+#include <mach/spi.h>
#define MITYOMAPL138_PHY_ID "0:03"
@@ -294,6 +297,100 @@ static int __init pmic_tps65023_init(void)
}
/*
+ * SPI Devices:
+ * SPI1_CS0: 8M Flash ST-M25P64-VME6G
+ */
+static struct mtd_partition spi_flash_partitions[] = {
+ [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 = "periph-config",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_64K,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ [4] = {
+ .name = "reserved",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_256K + SZ_64K,
+ },
+ [5] = {
+ .name = "kernel",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_2M + SZ_1M,
+ },
+ [6] = {
+ .name = "fpga",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_2M,
+ },
+ [7] = {
+ .name = "spare",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ },
+};
+
+static struct flash_platform_data mityomapl138_spi_flash_data = {
+ .name = "m25p80",
+ .parts = spi_flash_partitions,
+ .nr_parts = ARRAY_SIZE(spi_flash_partitions),
+ .type = "m24p64",
+};
+
+static struct davinci_spi_config spi_eprom_config = {
+ .io_type = SPI_IO_TYPE_DMA,
+ .c2tdelay = 8,
+ .t2cdelay = 8,
+};
+
+static struct spi_board_info mityomapl138_spi_flash_info[] = {
+ {
+ .modalias = "m25p80",
+ .platform_data = &mityomapl138_spi_flash_data,
+ .controller_data = &spi_eprom_config,
+ .mode = SPI_MODE_0,
+ .max_speed_hz = 30000000,
+ .bus_num = 1,
+ .chip_select = 0,
+ },
+};
+
+static void __init mityomapl138_init_spi1(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[1].num_chipselect = len;
+
+ ret = da8xx_register_spi(1);
+ if (ret)
+ pr_warning("%s: failed to register spi 1 device : %d\n",
+ __func__, ret);
+}
+
+/*
* MityDSP-L138 includes a 256 MByte large-page NAND flash
* (128K blocks).
*/
@@ -448,6 +545,9 @@ static void __init mityomapl138_init(void)
mityomapl138_setup_nand();
+ mityomapl138_init_spi1(mityomapl138_spi_flash_info,
+ ARRAY_SIZE(mityomapl138_spi_flash_info));
+
mityomapl138_config_emac();
ret = da8xx_register_rtc();
--
1.7.0.4
next prev parent reply other threads:[~2011-02-09 13:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-09 13:11 [PATCH v2 0/6] davinci: Add SPI support for da8xx platforms Michael Williamson
2011-02-09 13:11 ` [PATCH v2 1/6] davinci: da830: fix driver name for spi clocks Michael Williamson
2011-02-09 13:11 ` [PATCH v2 2/6] davinci: da850: add spi device clock definitions Michael Williamson
2011-02-09 13:11 ` [PATCH v2 3/6] davinci: da8xx: add spi resources and registration routine Michael Williamson
2011-02-22 6:14 ` Nori, Sekhar
2011-02-22 12:13 ` Michael Williamson
2011-02-09 13:11 ` Michael Williamson [this message]
2011-02-09 13:11 ` [PATCH v2 5/6] davinci: add spi devices support for da850/omap-l138/am18x evm Michael Williamson
2011-02-22 6:37 ` Nori, Sekhar
2011-02-22 12:13 ` Michael Williamson
2011-02-09 13:11 ` [PATCH v2 6/6] davinci: add spi devices support for da830/omap-l137/am17x evm Michael Williamson
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