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authorSudhakar Rajashekhara <sudhakar.raj@ti.com>2009-08-13 16:21:11 -0400
committerKevin Hilman <khilman@deeprootsystems.com>2009-08-26 04:55:56 -0400
commit38beb929f2c33a37bf3af6103c064a9edfbe242b (patch)
treeb4393295180b2b40ebc3e00c5b42aa61b06f2cd2 /arch/arm/mach-davinci/board-da850-evm.c
parent700691f27ed9b0891cece9032e4de8c0b482c625 (diff)
davinci: Add NAND flash support for DA850/OMAP-L138
This patch adds platform data for the 512MB NAND Flash found on DA850/OMAP-L138 EVM. Currently it supports only 1-bit ECC. Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci/board-da850-evm.c')
-rw-r--r--arch/arm/mach-davinci/board-da850-evm.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index eb998ce6d465..62d37cb6f29d 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -18,6 +18,10 @@
18#include <linux/i2c.h> 18#include <linux/i2c.h>
19#include <linux/i2c/at24.h> 19#include <linux/i2c/at24.h>
20#include <linux/gpio.h> 20#include <linux/gpio.h>
21#include <linux/platform_device.h>
22#include <linux/mtd/mtd.h>
23#include <linux/mtd/nand.h>
24#include <linux/mtd/partitions.h>
21 25
22#include <asm/mach-types.h> 26#include <asm/mach-types.h>
23#include <asm/mach/arch.h> 27#include <asm/mach/arch.h>
@@ -26,6 +30,7 @@
26#include <mach/irqs.h> 30#include <mach/irqs.h>
27#include <mach/cp_intc.h> 31#include <mach/cp_intc.h>
28#include <mach/da8xx.h> 32#include <mach/da8xx.h>
33#include <mach/nand.h>
29 34
30#define DA850_EVM_PHY_MASK 0x1 35#define DA850_EVM_PHY_MASK 0x1
31#define DA850_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */ 36#define DA850_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */
@@ -36,6 +41,74 @@
36#define DA850_MMCSD_CD_PIN GPIO_TO_PIN(4, 0) 41#define DA850_MMCSD_CD_PIN GPIO_TO_PIN(4, 0)
37#define DA850_MMCSD_WP_PIN GPIO_TO_PIN(4, 1) 42#define DA850_MMCSD_WP_PIN GPIO_TO_PIN(4, 1)
38 43
44/* DA850/OMAP-L138 EVM includes a 512 MByte large-page NAND flash
45 * (128K blocks). It may be used instead of the (default) SPI flash
46 * to boot, using TI's tools to install the secondary boot loader
47 * (UBL) and U-Boot.
48 */
49struct mtd_partition da850_evm_nandflash_partition[] = {
50 {
51 .name = "u-boot env",
52 .offset = 0,
53 .size = SZ_128K,
54 .mask_flags = MTD_WRITEABLE,
55 },
56 {
57 .name = "UBL",
58 .offset = MTDPART_OFS_APPEND,
59 .size = SZ_128K,
60 .mask_flags = MTD_WRITEABLE,
61 },
62 {
63 .name = "u-boot",
64 .offset = MTDPART_OFS_APPEND,
65 .size = 4 * SZ_128K,
66 .mask_flags = MTD_WRITEABLE,
67 },
68 {
69 .name = "kernel",
70 .offset = 0x200000,
71 .size = SZ_2M,
72 .mask_flags = 0,
73 },
74 {
75 .name = "filesystem",
76 .offset = MTDPART_OFS_APPEND,
77 .size = MTDPART_SIZ_FULL,
78 .mask_flags = 0,
79 },
80};
81
82static struct davinci_nand_pdata da850_evm_nandflash_data = {
83 .parts = da850_evm_nandflash_partition,
84 .nr_parts = ARRAY_SIZE(da850_evm_nandflash_partition),
85 .ecc_mode = NAND_ECC_HW,
86 .options = NAND_USE_FLASH_BBT,
87};
88
89static struct resource da850_evm_nandflash_resource[] = {
90 {
91 .start = DA8XX_AEMIF_CS3_BASE,
92 .end = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
93 .flags = IORESOURCE_MEM,
94 },
95 {
96 .start = DA8XX_AEMIF_CTL_BASE,
97 .end = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
98 .flags = IORESOURCE_MEM,
99 },
100};
101
102static struct platform_device da850_evm_nandflash_device = {
103 .name = "davinci_nand",
104 .id = 1,
105 .dev = {
106 .platform_data = &da850_evm_nandflash_data,
107 },
108 .num_resources = ARRAY_SIZE(da850_evm_nandflash_resource),
109 .resource = da850_evm_nandflash_resource,
110};
111
39static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = { 112static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = {
40 .bus_freq = 100, /* kHz */ 113 .bus_freq = 100, /* kHz */
41 .bus_delay = 0, /* usec */ 114 .bus_delay = 0, /* usec */
@@ -45,6 +118,10 @@ static struct davinci_uart_config da850_evm_uart_config __initdata = {
45 .enabled_uarts = 0x7, 118 .enabled_uarts = 0x7,
46}; 119};
47 120
121static struct platform_device *da850_evm_devices[] __initdata = {
122 &da850_evm_nandflash_device,
123};
124
48/* davinci da850 evm audio machine driver */ 125/* davinci da850 evm audio machine driver */
49static u8 da850_iis_serializer_direction[] = { 126static u8 da850_iis_serializer_direction[] = {
50 INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, 127 INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE,
@@ -120,6 +197,14 @@ static __init void da850_evm_init(void)
120 struct davinci_soc_info *soc_info = &davinci_soc_info; 197 struct davinci_soc_info *soc_info = &davinci_soc_info;
121 int ret; 198 int ret;
122 199
200 ret = da8xx_pinmux_setup(da850_nand_pins);
201 if (ret)
202 pr_warning("da850_evm_init: nand mux setup failed: %d\n",
203 ret);
204
205 platform_add_devices(da850_evm_devices,
206 ARRAY_SIZE(da850_evm_devices));
207
123 ret = da8xx_register_edma(); 208 ret = da8xx_register_edma();
124 if (ret) 209 if (ret)
125 pr_warning("da850_evm_init: edma registration failed: %d\n", 210 pr_warning("da850_evm_init: edma registration failed: %d\n",