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> 11#include <linux/init.h> 12#include <linux/err.h> 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> 18#include <linux/gpio.h> 19#include <linux/clk.h> 20#include <linux/spi/spi.h> 21#include <linux/spi/eeprom.h> 22 23#include <asm/mach-types.h> 24#include <asm/mach/arch.h> 25 26#include <mach/dm355.h> 27#include <mach/i2c.h> 28#include <mach/serial.h> 29#include <mach/nand.h> 30#include <mach/mmc.h> 31#include <mach/usb.h> 32 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 40static 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 72static 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 80static struct resource davinci_nand_resources[] = { 81 { 82 .start = DM355_ASYNC_EMIF_DATA_CE0_BASE, 83 .end = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1, 84 .flags = IORESOURCE_MEM, 85 }, { 86 .start = DM355_ASYNC_EMIF_CONTROL_BASE, 87 .end = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1, 88 .flags = IORESOURCE_MEM, 89 }, 90}; 91 92static 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 104static struct davinci_i2c_platform_data i2c_pdata = { 105 .bus_freq = 400 /* kHz */, 106 .bus_delay = 0 /* usec */, 107}; 108 109static int leopard_mmc_gpio = -EINVAL; 110 111static 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 125static 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 133static 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 145static 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 162static 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 169static struct platform_device *davinci_leopard_devices[] __initdata = { 170 &dm355leopard_dm9000, 171 &davinci_nand_device, 172}; 173 174static struct davinci_uart_config uart_config __initdata = { 175 .enabled_uarts = (1 << 0), 176}; 177 178static void __init dm355_leopard_map_io(void) 179{ 180 dm355_init(); 181} 182 183static 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 191static 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 199static 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}; 206 207/* 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 218static struct spi_eeprom at25640a = { 219 .byte_len = SZ_64K / 8, 220 .name = "at25640a", 221 .page_size = 32, 222 .flags = EE_ADDR2, 223}; 224 225static 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 236static __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 */ 263 davinci_setup_usb(1000, 8); 264 265 davinci_setup_mmc(0, &dm355leopard_mmc_config); 266 davinci_setup_mmc(1, &dm355leopard_mmc_config); 267 268 dm355_init_spi0(BIT(0), dm355_leopard_spi_info, 269 ARRAY_SIZE(dm355_leopard_spi_info)); 270} 271 272MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard") 273 .phys_io = IO_PHYS, 274 .io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc, 275 .boot_params = (0x80000100), 276 .map_io = dm355_leopard_map_io, 277 .init_irq = davinci_irq_init, 278 .timer = &davinci_timer, 279 .init_machine = dm355_leopard_init, 280MACHINE_END 281