aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-davinci/board-dm355-evm.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-davinci/board-dm355-evm.c')
-rw-r--r--arch/arm/mach-davinci/board-dm355-evm.c269
1 files changed, 269 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c
new file mode 100644
index 000000000000..6af3c6c863ab
--- /dev/null
+++ b/arch/arm/mach-davinci/board-dm355-evm.c
@@ -0,0 +1,269 @@
1/*
2 * TI DaVinci EVM board support
3 *
4 * Author: Kevin Hilman, Deep Root Systems, LLC
5 *
6 * 2007 (c) MontaVista Software, Inc. This file is licensed under
7 * the terms of the GNU General Public License version 2. This program
8 * is licensed "as is" without any warranty of any kind, whether express
9 * or implied.
10 */
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/dma-mapping.h>
15#include <linux/platform_device.h>
16#include <linux/mtd/mtd.h>
17#include <linux/mtd/partitions.h>
18#include <linux/mtd/nand.h>
19#include <linux/i2c.h>
20#include <linux/io.h>
21#include <linux/gpio.h>
22#include <linux/clk.h>
23#include <linux/spi/spi.h>
24#include <linux/spi/eeprom.h>
25
26#include <asm/setup.h>
27#include <asm/mach-types.h>
28#include <asm/mach/arch.h>
29#include <asm/mach/map.h>
30#include <asm/mach/flash.h>
31
32#include <mach/hardware.h>
33#include <mach/dm355.h>
34#include <mach/psc.h>
35#include <mach/common.h>
36#include <mach/i2c.h>
37#include <mach/serial.h>
38#include <mach/nand.h>
39
40#define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000
41#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000
42
43/* NOTE: this is geared for the standard config, with a socketed
44 * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you
45 * swap chips, maybe with a different block size, partitioning may
46 * need to be changed.
47 */
48#define NAND_BLOCK_SIZE SZ_128K
49
50static struct mtd_partition davinci_nand_partitions[] = {
51 {
52 /* UBL (a few copies) plus U-Boot */
53 .name = "bootloader",
54 .offset = 0,
55 .size = 15 * NAND_BLOCK_SIZE,
56 .mask_flags = MTD_WRITEABLE, /* force read-only */
57 }, {
58 /* U-Boot environment */
59 .name = "params",
60 .offset = MTDPART_OFS_APPEND,
61 .size = 1 * NAND_BLOCK_SIZE,
62 .mask_flags = 0,
63 }, {
64 .name = "kernel",
65 .offset = MTDPART_OFS_APPEND,
66 .size = SZ_4M,
67 .mask_flags = 0,
68 }, {
69 .name = "filesystem1",
70 .offset = MTDPART_OFS_APPEND,
71 .size = SZ_512M,
72 .mask_flags = 0,
73 }, {
74 .name = "filesystem2",
75 .offset = MTDPART_OFS_APPEND,
76 .size = MTDPART_SIZ_FULL,
77 .mask_flags = 0,
78 }
79 /* two blocks with bad block table (and mirror) at the end */
80};
81
82static struct davinci_nand_pdata davinci_nand_data = {
83 .mask_chipsel = BIT(14),
84 .parts = davinci_nand_partitions,
85 .nr_parts = ARRAY_SIZE(davinci_nand_partitions),
86 .ecc_mode = NAND_ECC_HW_SYNDROME,
87 .options = NAND_USE_FLASH_BBT,
88};
89
90static struct resource davinci_nand_resources[] = {
91 {
92 .start = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
93 .end = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
94 .flags = IORESOURCE_MEM,
95 }, {
96 .start = DAVINCI_ASYNC_EMIF_CONTROL_BASE,
97 .end = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
98 .flags = IORESOURCE_MEM,
99 },
100};
101
102static struct platform_device davinci_nand_device = {
103 .name = "davinci_nand",
104 .id = 0,
105
106 .num_resources = ARRAY_SIZE(davinci_nand_resources),
107 .resource = davinci_nand_resources,
108
109 .dev = {
110 .platform_data = &davinci_nand_data,
111 },
112};
113
114static struct davinci_i2c_platform_data i2c_pdata = {
115 .bus_freq = 400 /* kHz */,
116 .bus_delay = 0 /* usec */,
117};
118
119static int dm355evm_mmc_gpios = -EINVAL;
120
121static void dm355evm_mmcsd_gpios(unsigned gpio)
122{
123 gpio_request(gpio + 0, "mmc0_ro");
124 gpio_request(gpio + 1, "mmc0_cd");
125 gpio_request(gpio + 2, "mmc1_ro");
126 gpio_request(gpio + 3, "mmc1_cd");
127
128 /* we "know" these are input-only so we don't
129 * need to call gpio_direction_input()
130 */
131
132 dm355evm_mmc_gpios = gpio;
133}
134
135static struct i2c_board_info dm355evm_i2c_info[] = {
136 { I2C_BOARD_INFO("dm355evm_msp", 0x25),
137 .platform_data = dm355evm_mmcsd_gpios,
138 /* plus irq */ },
139 /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
140 /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
141};
142
143static void __init evm_init_i2c(void)
144{
145 davinci_init_i2c(&i2c_pdata);
146
147 gpio_request(5, "dm355evm_msp");
148 gpio_direction_input(5);
149 dm355evm_i2c_info[0].irq = gpio_to_irq(5);
150
151 i2c_register_board_info(1, dm355evm_i2c_info,
152 ARRAY_SIZE(dm355evm_i2c_info));
153}
154
155static struct resource dm355evm_dm9000_rsrc[] = {
156 {
157 /* addr */
158 .start = 0x04014000,
159 .end = 0x04014001,
160 .flags = IORESOURCE_MEM,
161 }, {
162 /* data */
163 .start = 0x04014002,
164 .end = 0x04014003,
165 .flags = IORESOURCE_MEM,
166 }, {
167 .flags = IORESOURCE_IRQ
168 | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
169 },
170};
171
172static struct platform_device dm355evm_dm9000 = {
173 .name = "dm9000",
174 .id = -1,
175 .resource = dm355evm_dm9000_rsrc,
176 .num_resources = ARRAY_SIZE(dm355evm_dm9000_rsrc),
177};
178
179static struct platform_device *davinci_evm_devices[] __initdata = {
180 &dm355evm_dm9000,
181 &davinci_nand_device,
182};
183
184static struct davinci_uart_config uart_config __initdata = {
185 .enabled_uarts = (1 << 0),
186};
187
188static void __init dm355_evm_map_io(void)
189{
190 davinci_map_common_io();
191 dm355_init();
192}
193
194/* Don't connect anything to J10 unless you're only using USB host
195 * mode *and* have to do so with some kind of gender-bender. If
196 * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
197 * the ID pin won't need any help.
198 */
199#ifdef CONFIG_USB_MUSB_PERIPHERAL
200#define USB_ID_VALUE 0 /* ID pulled high; *should* float */
201#else
202#define USB_ID_VALUE 1 /* ID pulled low */
203#endif
204
205static struct spi_eeprom at25640a = {
206 .byte_len = SZ_64K / 8,
207 .name = "at25640a",
208 .page_size = 32,
209 .flags = EE_ADDR2,
210};
211
212static struct spi_board_info dm355_evm_spi_info[] __initconst = {
213 {
214 .modalias = "at25",
215 .platform_data = &at25640a,
216 .max_speed_hz = 10 * 1000 * 1000, /* at 3v3 */
217 .bus_num = 0,
218 .chip_select = 0,
219 .mode = SPI_MODE_0,
220 },
221};
222
223static __init void dm355_evm_init(void)
224{
225 struct clk *aemif;
226
227 gpio_request(1, "dm9000");
228 gpio_direction_input(1);
229 dm355evm_dm9000_rsrc[2].start = gpio_to_irq(1);
230
231 aemif = clk_get(&dm355evm_dm9000.dev, "aemif");
232 if (IS_ERR(aemif))
233 WARN("%s: unable to get AEMIF clock\n", __func__);
234 else
235 clk_enable(aemif);
236
237 platform_add_devices(davinci_evm_devices,
238 ARRAY_SIZE(davinci_evm_devices));
239 evm_init_i2c();
240 davinci_serial_init(&uart_config);
241
242 /* NOTE: NAND flash timings set by the UBL are slower than
243 * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
244 * but could be 0x0400008c for about 25% faster page reads.
245 */
246
247 gpio_request(2, "usb_id_toggle");
248 gpio_direction_output(2, USB_ID_VALUE);
249 /* irlml6401 switches over 1A in under 8 msec */
250 setup_usb(500, 8);
251
252 dm355_init_spi0(BIT(0), dm355_evm_spi_info,
253 ARRAY_SIZE(dm355_evm_spi_info));
254}
255
256static __init void dm355_evm_irq_init(void)
257{
258 davinci_irq_init();
259}
260
261MACHINE_START(DAVINCI_DM355_EVM, "DaVinci DM355 EVM")
262 .phys_io = IO_PHYS,
263 .io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
264 .boot_params = (0x80000100),
265 .map_io = dm355_evm_map_io,
266 .init_irq = dm355_evm_irq_init,
267 .timer = &davinci_timer,
268 .init_machine = dm355_evm_init,
269MACHINE_END