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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 | |
95a3477f | 26 | #include <mach/dm355.h> |
95a3477f KH |
27 | #include <mach/common.h> |
28 | #include <mach/i2c.h> | |
29 | #include <mach/serial.h> | |
30 | #include <mach/nand.h> | |
2dbf56ae | 31 | #include <mach/mmc.h> |
95a3477f KH |
32 | |
33 | #define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000 | |
34 | #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000 | |
35 | ||
36 | /* NOTE: this is geared for the standard config, with a socketed | |
37 | * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you | |
38 | * swap chips, maybe with a different block size, partitioning may | |
39 | * need to be changed. | |
40 | */ | |
41 | #define NAND_BLOCK_SIZE SZ_128K | |
42 | ||
43 | static struct mtd_partition davinci_nand_partitions[] = { | |
44 | { | |
45 | /* UBL (a few copies) plus U-Boot */ | |
46 | .name = "bootloader", | |
47 | .offset = 0, | |
48 | .size = 15 * NAND_BLOCK_SIZE, | |
49 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | |
50 | }, { | |
51 | /* U-Boot environment */ | |
52 | .name = "params", | |
53 | .offset = MTDPART_OFS_APPEND, | |
54 | .size = 1 * NAND_BLOCK_SIZE, | |
55 | .mask_flags = 0, | |
56 | }, { | |
57 | .name = "kernel", | |
58 | .offset = MTDPART_OFS_APPEND, | |
59 | .size = SZ_4M, | |
60 | .mask_flags = 0, | |
61 | }, { | |
62 | .name = "filesystem1", | |
63 | .offset = MTDPART_OFS_APPEND, | |
64 | .size = SZ_512M, | |
65 | .mask_flags = 0, | |
66 | }, { | |
67 | .name = "filesystem2", | |
68 | .offset = MTDPART_OFS_APPEND, | |
69 | .size = MTDPART_SIZ_FULL, | |
70 | .mask_flags = 0, | |
71 | } | |
72 | /* two blocks with bad block table (and mirror) at the end */ | |
73 | }; | |
74 | ||
75 | static struct davinci_nand_pdata davinci_nand_data = { | |
76 | .mask_chipsel = BIT(14), | |
77 | .parts = davinci_nand_partitions, | |
78 | .nr_parts = ARRAY_SIZE(davinci_nand_partitions), | |
79 | .ecc_mode = NAND_ECC_HW_SYNDROME, | |
80 | .options = NAND_USE_FLASH_BBT, | |
81 | }; | |
82 | ||
83 | static struct resource davinci_nand_resources[] = { | |
84 | { | |
85 | .start = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE, | |
86 | .end = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1, | |
87 | .flags = IORESOURCE_MEM, | |
88 | }, { | |
89 | .start = DAVINCI_ASYNC_EMIF_CONTROL_BASE, | |
90 | .end = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1, | |
91 | .flags = IORESOURCE_MEM, | |
92 | }, | |
93 | }; | |
94 | ||
95 | static struct platform_device davinci_nand_device = { | |
96 | .name = "davinci_nand", | |
97 | .id = 0, | |
98 | ||
99 | .num_resources = ARRAY_SIZE(davinci_nand_resources), | |
100 | .resource = davinci_nand_resources, | |
101 | ||
102 | .dev = { | |
103 | .platform_data = &davinci_nand_data, | |
104 | }, | |
105 | }; | |
106 | ||
107 | static struct davinci_i2c_platform_data i2c_pdata = { | |
108 | .bus_freq = 400 /* kHz */, | |
109 | .bus_delay = 0 /* usec */, | |
110 | }; | |
111 | ||
112 | static int leopard_mmc_gpio = -EINVAL; | |
113 | ||
114 | static void dm355leopard_mmcsd_gpios(unsigned gpio) | |
115 | { | |
116 | gpio_request(gpio + 0, "mmc0_ro"); | |
117 | gpio_request(gpio + 1, "mmc0_cd"); | |
118 | gpio_request(gpio + 2, "mmc1_ro"); | |
119 | gpio_request(gpio + 3, "mmc1_cd"); | |
120 | ||
121 | /* we "know" these are input-only so we don't | |
122 | * need to call gpio_direction_input() | |
123 | */ | |
124 | ||
125 | leopard_mmc_gpio = gpio; | |
126 | } | |
127 | ||
128 | static struct i2c_board_info dm355leopard_i2c_info[] = { | |
129 | { I2C_BOARD_INFO("dm355leopard_msp", 0x25), | |
130 | .platform_data = dm355leopard_mmcsd_gpios, | |
131 | /* plus irq */ }, | |
132 | /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */ | |
133 | /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */ | |
134 | }; | |
135 | ||
136 | static void __init leopard_init_i2c(void) | |
137 | { | |
138 | davinci_init_i2c(&i2c_pdata); | |
139 | ||
140 | gpio_request(5, "dm355leopard_msp"); | |
141 | gpio_direction_input(5); | |
142 | dm355leopard_i2c_info[0].irq = gpio_to_irq(5); | |
143 | ||
144 | i2c_register_board_info(1, dm355leopard_i2c_info, | |
145 | ARRAY_SIZE(dm355leopard_i2c_info)); | |
146 | } | |
147 | ||
148 | static struct resource dm355leopard_dm9000_rsrc[] = { | |
149 | { | |
150 | /* addr */ | |
151 | .start = 0x04000000, | |
152 | .end = 0x04000001, | |
153 | .flags = IORESOURCE_MEM, | |
154 | }, { | |
155 | /* data */ | |
156 | .start = 0x04000016, | |
157 | .end = 0x04000017, | |
158 | .flags = IORESOURCE_MEM, | |
159 | }, { | |
160 | .flags = IORESOURCE_IRQ | |
161 | | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */, | |
162 | }, | |
163 | }; | |
164 | ||
165 | static struct platform_device dm355leopard_dm9000 = { | |
166 | .name = "dm9000", | |
167 | .id = -1, | |
168 | .resource = dm355leopard_dm9000_rsrc, | |
169 | .num_resources = ARRAY_SIZE(dm355leopard_dm9000_rsrc), | |
170 | }; | |
171 | ||
172 | static struct platform_device *davinci_leopard_devices[] __initdata = { | |
173 | &dm355leopard_dm9000, | |
174 | &davinci_nand_device, | |
175 | }; | |
176 | ||
177 | static struct davinci_uart_config uart_config __initdata = { | |
178 | .enabled_uarts = (1 << 0), | |
179 | }; | |
180 | ||
181 | static void __init dm355_leopard_map_io(void) | |
182 | { | |
95a3477f KH |
183 | dm355_init(); |
184 | } | |
185 | ||
2dbf56ae KH |
186 | static int dm355leopard_mmc_get_cd(int module) |
187 | { | |
188 | if (!gpio_is_valid(leopard_mmc_gpio)) | |
189 | return -ENXIO; | |
190 | /* low == card present */ | |
191 | return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1); | |
192 | } | |
193 | ||
194 | static int dm355leopard_mmc_get_ro(int module) | |
195 | { | |
196 | if (!gpio_is_valid(leopard_mmc_gpio)) | |
197 | return -ENXIO; | |
198 | /* high == card's write protect switch active */ | |
199 | return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0); | |
200 | } | |
201 | ||
202 | static struct davinci_mmc_config dm355leopard_mmc_config = { | |
203 | .get_cd = dm355leopard_mmc_get_cd, | |
204 | .get_ro = dm355leopard_mmc_get_ro, | |
205 | .wires = 4, | |
206 | .max_freq = 50000000, | |
207 | .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, | |
208 | }; | |
209 | ||
95a3477f KH |
210 | /* Don't connect anything to J10 unless you're only using USB host |
211 | * mode *and* have to do so with some kind of gender-bender. If | |
212 | * you have proper Mini-B or Mini-A cables (or Mini-A adapters) | |
213 | * the ID pin won't need any help. | |
214 | */ | |
215 | #ifdef CONFIG_USB_MUSB_PERIPHERAL | |
216 | #define USB_ID_VALUE 0 /* ID pulled high; *should* float */ | |
217 | #else | |
218 | #define USB_ID_VALUE 1 /* ID pulled low */ | |
219 | #endif | |
220 | ||
221 | static struct spi_eeprom at25640a = { | |
222 | .byte_len = SZ_64K / 8, | |
223 | .name = "at25640a", | |
224 | .page_size = 32, | |
225 | .flags = EE_ADDR2, | |
226 | }; | |
227 | ||
228 | static struct spi_board_info dm355_leopard_spi_info[] __initconst = { | |
229 | { | |
230 | .modalias = "at25", | |
231 | .platform_data = &at25640a, | |
232 | .max_speed_hz = 10 * 1000 * 1000, /* at 3v3 */ | |
233 | .bus_num = 0, | |
234 | .chip_select = 0, | |
235 | .mode = SPI_MODE_0, | |
236 | }, | |
237 | }; | |
238 | ||
239 | static __init void dm355_leopard_init(void) | |
240 | { | |
241 | struct clk *aemif; | |
242 | ||
243 | gpio_request(9, "dm9000"); | |
244 | gpio_direction_input(9); | |
245 | dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9); | |
246 | ||
247 | aemif = clk_get(&dm355leopard_dm9000.dev, "aemif"); | |
248 | if (IS_ERR(aemif)) | |
249 | WARN("%s: unable to get AEMIF clock\n", __func__); | |
250 | else | |
251 | clk_enable(aemif); | |
252 | ||
253 | platform_add_devices(davinci_leopard_devices, | |
254 | ARRAY_SIZE(davinci_leopard_devices)); | |
255 | leopard_init_i2c(); | |
256 | davinci_serial_init(&uart_config); | |
257 | ||
258 | /* NOTE: NAND flash timings set by the UBL are slower than | |
259 | * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204 | |
260 | * but could be 0x0400008c for about 25% faster page reads. | |
261 | */ | |
262 | ||
263 | gpio_request(2, "usb_id_toggle"); | |
264 | gpio_direction_output(2, USB_ID_VALUE); | |
265 | /* irlml6401 switches over 1A in under 8 msec */ | |
266 | setup_usb(500, 8); | |
267 | ||
2dbf56ae KH |
268 | davinci_setup_mmc(0, &dm355leopard_mmc_config); |
269 | davinci_setup_mmc(1, &dm355leopard_mmc_config); | |
270 | ||
95a3477f KH |
271 | dm355_init_spi0(BIT(0), dm355_leopard_spi_info, |
272 | ARRAY_SIZE(dm355_leopard_spi_info)); | |
273 | } | |
274 | ||
275 | static __init void dm355_leopard_irq_init(void) | |
276 | { | |
277 | davinci_irq_init(); | |
278 | } | |
279 | ||
280 | MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard") | |
281 | .phys_io = IO_PHYS, | |
282 | .io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc, | |
283 | .boot_params = (0x80000100), | |
284 | .map_io = dm355_leopard_map_io, | |
285 | .init_irq = dm355_leopard_irq_init, | |
286 | .timer = &davinci_timer, | |
287 | .init_machine = dm355_leopard_init, | |
288 | MACHINE_END |