Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 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> |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 11 | #include <linux/init.h> |
Sergei Shtylyov | 42d399e | 2009-10-02 22:05:29 +0400 | [diff] [blame] | 12 | #include <linux/err.h> |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 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> |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 18 | #include <linux/gpio.h> |
| 19 | #include <linux/clk.h> |
| 20 | #include <linux/spi/spi.h> |
| 21 | #include <linux/spi/eeprom.h> |
| 22 | |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 23 | #include <asm/mach-types.h> |
| 24 | #include <asm/mach/arch.h> |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 25 | |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 26 | #include <mach/dm355.h> |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 27 | #include <mach/i2c.h> |
| 28 | #include <mach/serial.h> |
| 29 | #include <mach/nand.h> |
Kevin Hilman | 2dbf56ae | 2009-05-11 15:55:03 -0700 | [diff] [blame] | 30 | #include <mach/mmc.h> |
Sergei Shtylyov | 355fb4e | 2009-10-30 23:46:14 +0400 | [diff] [blame] | 31 | #include <mach/usb.h> |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 32 | |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 33 | /* NOTE: this is geared for the standard config, with a socketed |
| 34 | * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you |
| 35 | * swap chips, maybe with a different block size, partitioning may |
| 36 | * need to be changed. |
| 37 | */ |
| 38 | #define NAND_BLOCK_SIZE SZ_128K |
| 39 | |
| 40 | static struct mtd_partition davinci_nand_partitions[] = { |
| 41 | { |
| 42 | /* UBL (a few copies) plus U-Boot */ |
| 43 | .name = "bootloader", |
| 44 | .offset = 0, |
| 45 | .size = 15 * NAND_BLOCK_SIZE, |
| 46 | .mask_flags = MTD_WRITEABLE, /* force read-only */ |
| 47 | }, { |
| 48 | /* U-Boot environment */ |
| 49 | .name = "params", |
| 50 | .offset = MTDPART_OFS_APPEND, |
| 51 | .size = 1 * NAND_BLOCK_SIZE, |
| 52 | .mask_flags = 0, |
| 53 | }, { |
| 54 | .name = "kernel", |
| 55 | .offset = MTDPART_OFS_APPEND, |
| 56 | .size = SZ_4M, |
| 57 | .mask_flags = 0, |
| 58 | }, { |
| 59 | .name = "filesystem1", |
| 60 | .offset = MTDPART_OFS_APPEND, |
| 61 | .size = SZ_512M, |
| 62 | .mask_flags = 0, |
| 63 | }, { |
| 64 | .name = "filesystem2", |
| 65 | .offset = MTDPART_OFS_APPEND, |
| 66 | .size = MTDPART_SIZ_FULL, |
| 67 | .mask_flags = 0, |
| 68 | } |
| 69 | /* two blocks with bad block table (and mirror) at the end */ |
| 70 | }; |
| 71 | |
| 72 | static struct davinci_nand_pdata davinci_nand_data = { |
| 73 | .mask_chipsel = BIT(14), |
| 74 | .parts = davinci_nand_partitions, |
| 75 | .nr_parts = ARRAY_SIZE(davinci_nand_partitions), |
| 76 | .ecc_mode = NAND_ECC_HW_SYNDROME, |
| 77 | .options = NAND_USE_FLASH_BBT, |
| 78 | }; |
| 79 | |
| 80 | static struct resource davinci_nand_resources[] = { |
| 81 | { |
Sergei Shtylyov | 7034217 | 2010-04-16 21:29:11 +0400 | [diff] [blame] | 82 | .start = DM355_ASYNC_EMIF_DATA_CE0_BASE, |
| 83 | .end = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1, |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 84 | .flags = IORESOURCE_MEM, |
| 85 | }, { |
Sergei Shtylyov | 7034217 | 2010-04-16 21:29:11 +0400 | [diff] [blame] | 86 | .start = DM355_ASYNC_EMIF_CONTROL_BASE, |
| 87 | .end = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1, |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 88 | .flags = IORESOURCE_MEM, |
| 89 | }, |
| 90 | }; |
| 91 | |
| 92 | static struct platform_device davinci_nand_device = { |
| 93 | .name = "davinci_nand", |
| 94 | .id = 0, |
| 95 | |
| 96 | .num_resources = ARRAY_SIZE(davinci_nand_resources), |
| 97 | .resource = davinci_nand_resources, |
| 98 | |
| 99 | .dev = { |
| 100 | .platform_data = &davinci_nand_data, |
| 101 | }, |
| 102 | }; |
| 103 | |
| 104 | static struct davinci_i2c_platform_data i2c_pdata = { |
| 105 | .bus_freq = 400 /* kHz */, |
| 106 | .bus_delay = 0 /* usec */, |
| 107 | }; |
| 108 | |
| 109 | static int leopard_mmc_gpio = -EINVAL; |
| 110 | |
| 111 | static void dm355leopard_mmcsd_gpios(unsigned gpio) |
| 112 | { |
| 113 | gpio_request(gpio + 0, "mmc0_ro"); |
| 114 | gpio_request(gpio + 1, "mmc0_cd"); |
| 115 | gpio_request(gpio + 2, "mmc1_ro"); |
| 116 | gpio_request(gpio + 3, "mmc1_cd"); |
| 117 | |
| 118 | /* we "know" these are input-only so we don't |
| 119 | * need to call gpio_direction_input() |
| 120 | */ |
| 121 | |
| 122 | leopard_mmc_gpio = gpio; |
| 123 | } |
| 124 | |
| 125 | static struct i2c_board_info dm355leopard_i2c_info[] = { |
| 126 | { I2C_BOARD_INFO("dm355leopard_msp", 0x25), |
| 127 | .platform_data = dm355leopard_mmcsd_gpios, |
| 128 | /* plus irq */ }, |
| 129 | /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */ |
| 130 | /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */ |
| 131 | }; |
| 132 | |
| 133 | static void __init leopard_init_i2c(void) |
| 134 | { |
| 135 | davinci_init_i2c(&i2c_pdata); |
| 136 | |
| 137 | gpio_request(5, "dm355leopard_msp"); |
| 138 | gpio_direction_input(5); |
| 139 | dm355leopard_i2c_info[0].irq = gpio_to_irq(5); |
| 140 | |
| 141 | i2c_register_board_info(1, dm355leopard_i2c_info, |
| 142 | ARRAY_SIZE(dm355leopard_i2c_info)); |
| 143 | } |
| 144 | |
| 145 | static struct resource dm355leopard_dm9000_rsrc[] = { |
| 146 | { |
| 147 | /* addr */ |
| 148 | .start = 0x04000000, |
| 149 | .end = 0x04000001, |
| 150 | .flags = IORESOURCE_MEM, |
| 151 | }, { |
| 152 | /* data */ |
| 153 | .start = 0x04000016, |
| 154 | .end = 0x04000017, |
| 155 | .flags = IORESOURCE_MEM, |
| 156 | }, { |
| 157 | .flags = IORESOURCE_IRQ |
| 158 | | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */, |
| 159 | }, |
| 160 | }; |
| 161 | |
| 162 | static struct platform_device dm355leopard_dm9000 = { |
| 163 | .name = "dm9000", |
| 164 | .id = -1, |
| 165 | .resource = dm355leopard_dm9000_rsrc, |
| 166 | .num_resources = ARRAY_SIZE(dm355leopard_dm9000_rsrc), |
| 167 | }; |
| 168 | |
| 169 | static struct platform_device *davinci_leopard_devices[] __initdata = { |
| 170 | &dm355leopard_dm9000, |
| 171 | &davinci_nand_device, |
| 172 | }; |
| 173 | |
| 174 | static struct davinci_uart_config uart_config __initdata = { |
| 175 | .enabled_uarts = (1 << 0), |
| 176 | }; |
| 177 | |
| 178 | static void __init dm355_leopard_map_io(void) |
| 179 | { |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 180 | dm355_init(); |
| 181 | } |
| 182 | |
Kevin Hilman | 2dbf56ae | 2009-05-11 15:55:03 -0700 | [diff] [blame] | 183 | static int dm355leopard_mmc_get_cd(int module) |
| 184 | { |
| 185 | if (!gpio_is_valid(leopard_mmc_gpio)) |
| 186 | return -ENXIO; |
| 187 | /* low == card present */ |
| 188 | return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1); |
| 189 | } |
| 190 | |
| 191 | static int dm355leopard_mmc_get_ro(int module) |
| 192 | { |
| 193 | if (!gpio_is_valid(leopard_mmc_gpio)) |
| 194 | return -ENXIO; |
| 195 | /* high == card's write protect switch active */ |
| 196 | return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0); |
| 197 | } |
| 198 | |
| 199 | static struct davinci_mmc_config dm355leopard_mmc_config = { |
| 200 | .get_cd = dm355leopard_mmc_get_cd, |
| 201 | .get_ro = dm355leopard_mmc_get_ro, |
| 202 | .wires = 4, |
| 203 | .max_freq = 50000000, |
| 204 | .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, |
| 205 | }; |
| 206 | |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 207 | /* Don't connect anything to J10 unless you're only using USB host |
| 208 | * mode *and* have to do so with some kind of gender-bender. If |
| 209 | * you have proper Mini-B or Mini-A cables (or Mini-A adapters) |
| 210 | * the ID pin won't need any help. |
| 211 | */ |
| 212 | #ifdef CONFIG_USB_MUSB_PERIPHERAL |
| 213 | #define USB_ID_VALUE 0 /* ID pulled high; *should* float */ |
| 214 | #else |
| 215 | #define USB_ID_VALUE 1 /* ID pulled low */ |
| 216 | #endif |
| 217 | |
| 218 | static struct spi_eeprom at25640a = { |
| 219 | .byte_len = SZ_64K / 8, |
| 220 | .name = "at25640a", |
| 221 | .page_size = 32, |
| 222 | .flags = EE_ADDR2, |
| 223 | }; |
| 224 | |
| 225 | static struct spi_board_info dm355_leopard_spi_info[] __initconst = { |
| 226 | { |
| 227 | .modalias = "at25", |
| 228 | .platform_data = &at25640a, |
| 229 | .max_speed_hz = 10 * 1000 * 1000, /* at 3v3 */ |
| 230 | .bus_num = 0, |
| 231 | .chip_select = 0, |
| 232 | .mode = SPI_MODE_0, |
| 233 | }, |
| 234 | }; |
| 235 | |
| 236 | static __init void dm355_leopard_init(void) |
| 237 | { |
| 238 | struct clk *aemif; |
| 239 | |
| 240 | gpio_request(9, "dm9000"); |
| 241 | gpio_direction_input(9); |
| 242 | dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9); |
| 243 | |
| 244 | aemif = clk_get(&dm355leopard_dm9000.dev, "aemif"); |
| 245 | if (IS_ERR(aemif)) |
| 246 | WARN("%s: unable to get AEMIF clock\n", __func__); |
| 247 | else |
| 248 | clk_enable(aemif); |
| 249 | |
| 250 | platform_add_devices(davinci_leopard_devices, |
| 251 | ARRAY_SIZE(davinci_leopard_devices)); |
| 252 | leopard_init_i2c(); |
| 253 | davinci_serial_init(&uart_config); |
| 254 | |
| 255 | /* NOTE: NAND flash timings set by the UBL are slower than |
| 256 | * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204 |
| 257 | * but could be 0x0400008c for about 25% faster page reads. |
| 258 | */ |
| 259 | |
| 260 | gpio_request(2, "usb_id_toggle"); |
| 261 | gpio_direction_output(2, USB_ID_VALUE); |
| 262 | /* irlml6401 switches over 1A in under 8 msec */ |
Sergei Shtylyov | 355fb4e | 2009-10-30 23:46:14 +0400 | [diff] [blame] | 263 | davinci_setup_usb(1000, 8); |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 264 | |
Kevin Hilman | 2dbf56ae | 2009-05-11 15:55:03 -0700 | [diff] [blame] | 265 | davinci_setup_mmc(0, &dm355leopard_mmc_config); |
| 266 | davinci_setup_mmc(1, &dm355leopard_mmc_config); |
| 267 | |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 268 | dm355_init_spi0(BIT(0), dm355_leopard_spi_info, |
| 269 | ARRAY_SIZE(dm355_leopard_spi_info)); |
| 270 | } |
| 271 | |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 272 | MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard") |
Nicolas Pitre | e7e5601 | 2011-07-05 22:38:11 -0400 | [diff] [blame^] | 273 | .atag_offset = 0x100, |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 274 | .map_io = dm355_leopard_map_io, |
Cyril Chemparathy | bd80894 | 2010-05-07 17:06:37 -0400 | [diff] [blame] | 275 | .init_irq = davinci_irq_init, |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 276 | .timer = &davinci_timer, |
| 277 | .init_machine = dm355_leopard_init, |
Nicolas Pitre | f68deab | 2011-07-05 22:28:08 -0400 | [diff] [blame] | 278 | .dma_zone_size = SZ_128M, |
Kevin Hilman | 95a3477 | 2009-04-29 12:10:55 -0700 | [diff] [blame] | 279 | MACHINE_END |