]>
Commit | Line | Data |
---|---|---|
95a3477f KH |
1 | /* |
2 | * DM355 leopard board support | |
3 | * | |
4 | * Based on board-dm355-evm.c | |
5 | * | |
6 | * This file is licensed under the terms of the GNU General Public | |
7 | * License version 2. This program is licensed "as is" without any | |
8 | * warranty of any kind, whether express or implied. | |
9 | */ | |
10 | #include <linux/kernel.h> | |
95a3477f | 11 | #include <linux/init.h> |
42d399e4 | 12 | #include <linux/err.h> |
95a3477f KH |
13 | #include <linux/platform_device.h> |
14 | #include <linux/mtd/mtd.h> | |
15 | #include <linux/mtd/partitions.h> | |
16 | #include <linux/mtd/nand.h> | |
17 | #include <linux/i2c.h> | |
95a3477f KH |
18 | #include <linux/gpio.h> |
19 | #include <linux/clk.h> | |
20 | #include <linux/spi/spi.h> | |
21 | #include <linux/spi/eeprom.h> | |
22 | ||
95a3477f KH |
23 | #include <asm/mach-types.h> |
24 | #include <asm/mach/arch.h> | |
95a3477f | 25 | |
ec2a0833 | 26 | #include <linux/platform_data/i2c-davinci.h> |
95a3477f | 27 | #include <mach/serial.h> |
ec2a0833 AB |
28 | #include <linux/platform_data/mtd-davinci.h> |
29 | #include <linux/platform_data/mmc-davinci.h> | |
30 | #include <linux/platform_data/usb-davinci.h> | |
95a3477f | 31 | |
39c6d2d1 MH |
32 | #include "davinci.h" |
33 | ||
95a3477f KH |
34 | /* NOTE: this is geared for the standard config, with a socketed |
35 | * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you | |
36 | * swap chips, maybe with a different block size, partitioning may | |
37 | * need to be changed. | |
38 | */ | |
39 | #define NAND_BLOCK_SIZE SZ_128K | |
40 | ||
41 | static struct mtd_partition davinci_nand_partitions[] = { | |
42 | { | |
43 | /* UBL (a few copies) plus U-Boot */ | |
44 | .name = "bootloader", | |
45 | .offset = 0, | |
46 | .size = 15 * NAND_BLOCK_SIZE, | |
47 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | |
48 | }, { | |
49 | /* U-Boot environment */ | |
50 | .name = "params", | |
51 | .offset = MTDPART_OFS_APPEND, | |
52 | .size = 1 * NAND_BLOCK_SIZE, | |
53 | .mask_flags = 0, | |
54 | }, { | |
55 | .name = "kernel", | |
56 | .offset = MTDPART_OFS_APPEND, | |
57 | .size = SZ_4M, | |
58 | .mask_flags = 0, | |
59 | }, { | |
60 | .name = "filesystem1", | |
61 | .offset = MTDPART_OFS_APPEND, | |
62 | .size = SZ_512M, | |
63 | .mask_flags = 0, | |
64 | }, { | |
65 | .name = "filesystem2", | |
66 | .offset = MTDPART_OFS_APPEND, | |
67 | .size = MTDPART_SIZ_FULL, | |
68 | .mask_flags = 0, | |
69 | } | |
70 | /* two blocks with bad block table (and mirror) at the end */ | |
71 | }; | |
72 | ||
73 | static struct davinci_nand_pdata davinci_nand_data = { | |
74 | .mask_chipsel = BIT(14), | |
75 | .parts = davinci_nand_partitions, | |
76 | .nr_parts = ARRAY_SIZE(davinci_nand_partitions), | |
77 | .ecc_mode = NAND_ECC_HW_SYNDROME, | |
bb9ebd4e | 78 | .bbt_options = NAND_BBT_USE_FLASH, |
95a3477f KH |
79 | }; |
80 | ||
81 | static struct resource davinci_nand_resources[] = { | |
82 | { | |
70342174 SS |
83 | .start = DM355_ASYNC_EMIF_DATA_CE0_BASE, |
84 | .end = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1, | |
95a3477f KH |
85 | .flags = IORESOURCE_MEM, |
86 | }, { | |
70342174 SS |
87 | .start = DM355_ASYNC_EMIF_CONTROL_BASE, |
88 | .end = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1, | |
95a3477f KH |
89 | .flags = IORESOURCE_MEM, |
90 | }, | |
91 | }; | |
92 | ||
93 | static struct platform_device davinci_nand_device = { | |
94 | .name = "davinci_nand", | |
95 | .id = 0, | |
96 | ||
97 | .num_resources = ARRAY_SIZE(davinci_nand_resources), | |
98 | .resource = davinci_nand_resources, | |
99 | ||
100 | .dev = { | |
101 | .platform_data = &davinci_nand_data, | |
102 | }, | |
103 | }; | |
104 | ||
105 | static struct davinci_i2c_platform_data i2c_pdata = { | |
106 | .bus_freq = 400 /* kHz */, | |
107 | .bus_delay = 0 /* usec */, | |
108 | }; | |
109 | ||
110 | static int leopard_mmc_gpio = -EINVAL; | |
111 | ||
112 | static void dm355leopard_mmcsd_gpios(unsigned gpio) | |
113 | { | |
114 | gpio_request(gpio + 0, "mmc0_ro"); | |
115 | gpio_request(gpio + 1, "mmc0_cd"); | |
116 | gpio_request(gpio + 2, "mmc1_ro"); | |
117 | gpio_request(gpio + 3, "mmc1_cd"); | |
118 | ||
119 | /* we "know" these are input-only so we don't | |
120 | * need to call gpio_direction_input() | |
121 | */ | |
122 | ||
123 | leopard_mmc_gpio = gpio; | |
124 | } | |
125 | ||
126 | static struct i2c_board_info dm355leopard_i2c_info[] = { | |
127 | { I2C_BOARD_INFO("dm355leopard_msp", 0x25), | |
128 | .platform_data = dm355leopard_mmcsd_gpios, | |
129 | /* plus irq */ }, | |
130 | /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */ | |
131 | /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */ | |
132 | }; | |
133 | ||
134 | static void __init leopard_init_i2c(void) | |
135 | { | |
136 | davinci_init_i2c(&i2c_pdata); | |
137 | ||
138 | gpio_request(5, "dm355leopard_msp"); | |
139 | gpio_direction_input(5); | |
140 | dm355leopard_i2c_info[0].irq = gpio_to_irq(5); | |
141 | ||
142 | i2c_register_board_info(1, dm355leopard_i2c_info, | |
143 | ARRAY_SIZE(dm355leopard_i2c_info)); | |
144 | } | |
145 | ||
146 | static struct resource dm355leopard_dm9000_rsrc[] = { | |
147 | { | |
148 | /* addr */ | |
149 | .start = 0x04000000, | |
150 | .end = 0x04000001, | |
151 | .flags = IORESOURCE_MEM, | |
152 | }, { | |
153 | /* data */ | |
154 | .start = 0x04000016, | |
155 | .end = 0x04000017, | |
156 | .flags = IORESOURCE_MEM, | |
157 | }, { | |
158 | .flags = IORESOURCE_IRQ | |
159 | | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */, | |
160 | }, | |
161 | }; | |
162 | ||
163 | static struct platform_device dm355leopard_dm9000 = { | |
164 | .name = "dm9000", | |
165 | .id = -1, | |
166 | .resource = dm355leopard_dm9000_rsrc, | |
167 | .num_resources = ARRAY_SIZE(dm355leopard_dm9000_rsrc), | |
168 | }; | |
169 | ||
170 | static struct platform_device *davinci_leopard_devices[] __initdata = { | |
171 | &dm355leopard_dm9000, | |
172 | &davinci_nand_device, | |
173 | }; | |
174 | ||
175 | static struct davinci_uart_config uart_config __initdata = { | |
176 | .enabled_uarts = (1 << 0), | |
177 | }; | |
178 | ||
179 | static void __init dm355_leopard_map_io(void) | |
180 | { | |
95a3477f KH |
181 | dm355_init(); |
182 | } | |
183 | ||
2dbf56ae KH |
184 | static int dm355leopard_mmc_get_cd(int module) |
185 | { | |
186 | if (!gpio_is_valid(leopard_mmc_gpio)) | |
187 | return -ENXIO; | |
188 | /* low == card present */ | |
189 | return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1); | |
190 | } | |
191 | ||
192 | static int dm355leopard_mmc_get_ro(int module) | |
193 | { | |
194 | if (!gpio_is_valid(leopard_mmc_gpio)) | |
195 | return -ENXIO; | |
196 | /* high == card's write protect switch active */ | |
197 | return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0); | |
198 | } | |
199 | ||
200 | static struct davinci_mmc_config dm355leopard_mmc_config = { | |
201 | .get_cd = dm355leopard_mmc_get_cd, | |
202 | .get_ro = dm355leopard_mmc_get_ro, | |
203 | .wires = 4, | |
204 | .max_freq = 50000000, | |
205 | .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, | |
206 | }; | |
207 | ||
95a3477f KH |
208 | /* Don't connect anything to J10 unless you're only using USB host |
209 | * mode *and* have to do so with some kind of gender-bender. If | |
210 | * you have proper Mini-B or Mini-A cables (or Mini-A adapters) | |
211 | * the ID pin won't need any help. | |
212 | */ | |
213 | #ifdef CONFIG_USB_MUSB_PERIPHERAL | |
214 | #define USB_ID_VALUE 0 /* ID pulled high; *should* float */ | |
215 | #else | |
216 | #define USB_ID_VALUE 1 /* ID pulled low */ | |
217 | #endif | |
218 | ||
219 | static struct spi_eeprom at25640a = { | |
220 | .byte_len = SZ_64K / 8, | |
221 | .name = "at25640a", | |
222 | .page_size = 32, | |
223 | .flags = EE_ADDR2, | |
224 | }; | |
225 | ||
226 | static struct spi_board_info dm355_leopard_spi_info[] __initconst = { | |
227 | { | |
228 | .modalias = "at25", | |
229 | .platform_data = &at25640a, | |
230 | .max_speed_hz = 10 * 1000 * 1000, /* at 3v3 */ | |
231 | .bus_num = 0, | |
232 | .chip_select = 0, | |
233 | .mode = SPI_MODE_0, | |
234 | }, | |
235 | }; | |
236 | ||
237 | static __init void dm355_leopard_init(void) | |
238 | { | |
239 | struct clk *aemif; | |
240 | ||
241 | gpio_request(9, "dm9000"); | |
242 | gpio_direction_input(9); | |
243 | dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9); | |
244 | ||
245 | aemif = clk_get(&dm355leopard_dm9000.dev, "aemif"); | |
246 | if (IS_ERR(aemif)) | |
247 | WARN("%s: unable to get AEMIF clock\n", __func__); | |
248 | else | |
b6f1ffed | 249 | clk_prepare_enable(aemif); |
95a3477f KH |
250 | |
251 | platform_add_devices(davinci_leopard_devices, | |
252 | ARRAY_SIZE(davinci_leopard_devices)); | |
253 | leopard_init_i2c(); | |
254 | davinci_serial_init(&uart_config); | |
255 | ||
256 | /* NOTE: NAND flash timings set by the UBL are slower than | |
257 | * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204 | |
258 | * but could be 0x0400008c for about 25% faster page reads. | |
259 | */ | |
260 | ||
261 | gpio_request(2, "usb_id_toggle"); | |
262 | gpio_direction_output(2, USB_ID_VALUE); | |
263 | /* irlml6401 switches over 1A in under 8 msec */ | |
355fb4e3 | 264 | davinci_setup_usb(1000, 8); |
95a3477f | 265 | |
2dbf56ae KH |
266 | davinci_setup_mmc(0, &dm355leopard_mmc_config); |
267 | davinci_setup_mmc(1, &dm355leopard_mmc_config); | |
268 | ||
95a3477f KH |
269 | dm355_init_spi0(BIT(0), dm355_leopard_spi_info, |
270 | ARRAY_SIZE(dm355_leopard_spi_info)); | |
271 | } | |
272 | ||
95a3477f | 273 | MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard") |
e7e56014 | 274 | .atag_offset = 0x100, |
95a3477f | 275 | .map_io = dm355_leopard_map_io, |
bd808947 | 276 | .init_irq = davinci_irq_init, |
6bb27d73 | 277 | .init_time = davinci_timer_init, |
95a3477f | 278 | .init_machine = dm355_leopard_init, |
3aa3e840 | 279 | .init_late = davinci_init_late, |
f68deabf | 280 | .dma_zone_size = SZ_128M, |
c6121ddd | 281 | .restart = davinci_restart, |
95a3477f | 282 | MACHINE_END |