arch/arm/mach-davinci/board-dm355-leopard.c

   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
  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         {
  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
  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 {
 180         dm355_init();
 181 }
 182
 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
 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 */
 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
 272 MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
 273         .boot_params  = (0x80000100),
 274         .map_io       = dm355_leopard_map_io,
 275         .init_irq     = davinci_irq_init,
 276         .timer        = &davinci_timer,
 277         .init_machine = dm355_leopard_init,
 278 MACHINE_END