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 #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 {
 183         dm355_init();
 184 }
 185
 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
 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         davinci_setup_usb(1000, 8);
 267
 268         davinci_setup_mmc(0, &dm355leopard_mmc_config);
 269         davinci_setup_mmc(1, &dm355leopard_mmc_config);
 270
 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