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/rawnand.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 #include <linux/platform_data/i2c-davinci.h>
  23 #include <linux/platform_data/mmc-davinci.h>
  24 #include <linux/platform_data/mtd-davinci.h>
  25 #include <linux/platform_data/usb-davinci.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29
  30 #include <mach/common.h>
  31 #include <mach/serial.h>
  32
  33 #include "davinci.h"
  34
  35 /* NOTE:  this is geared for the standard config, with a socketed
  36  * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
  37  * swap chips, maybe with a different block size, partitioning may
  38  * need to be changed.
  39  */
  40 #define NAND_BLOCK_SIZE         SZ_128K
  41
  42 static struct mtd_partition davinci_nand_partitions[] = {
  43         {
  44                 /* UBL (a few copies) plus U-Boot */
  45                 .name           = "bootloader",
  46                 .offset         = 0,
  47                 .size           = 15 * NAND_BLOCK_SIZE,
  48                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
  49         }, {
  50                 /* U-Boot environment */
  51                 .name           = "params",
  52                 .offset         = MTDPART_OFS_APPEND,
  53                 .size           = 1 * NAND_BLOCK_SIZE,
  54                 .mask_flags     = 0,
  55         }, {
  56                 .name           = "kernel",
  57                 .offset         = MTDPART_OFS_APPEND,
  58                 .size           = SZ_4M,
  59                 .mask_flags     = 0,
  60         }, {
  61                 .name           = "filesystem1",
  62                 .offset         = MTDPART_OFS_APPEND,
  63                 .size           = SZ_512M,
  64                 .mask_flags     = 0,
  65         }, {
  66                 .name           = "filesystem2",
  67                 .offset         = MTDPART_OFS_APPEND,
  68                 .size           = MTDPART_SIZ_FULL,
  69                 .mask_flags     = 0,
  70         }
  71         /* two blocks with bad block table (and mirror) at the end */
  72 };
  73
  74 static struct davinci_nand_pdata davinci_nand_data = {
  75         .core_chipsel           = 0,
  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         .ecc_bits               = 4,
  81         .bbt_options            = NAND_BBT_USE_FLASH,
  82 };
  83
  84 static struct resource davinci_nand_resources[] = {
  85         {
  86                 .start          = DM355_ASYNC_EMIF_DATA_CE0_BASE,
  87                 .end            = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
  88                 .flags          = IORESOURCE_MEM,
  89         }, {
  90                 .start          = DM355_ASYNC_EMIF_CONTROL_BASE,
  91                 .end            = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
  92                 .flags          = IORESOURCE_MEM,
  93         },
  94 };
  95
  96 static struct platform_device davinci_nand_device = {
  97         .name                   = "davinci_nand",
  98         .id                     = 0,
  99
 100         .num_resources          = ARRAY_SIZE(davinci_nand_resources),
 101         .resource               = davinci_nand_resources,
 102
 103         .dev                    = {
 104                 .platform_data  = &davinci_nand_data,
 105         },
 106 };
 107
 108 static struct davinci_i2c_platform_data i2c_pdata = {
 109         .bus_freq       = 400   /* kHz */,
 110         .bus_delay      = 0     /* usec */,
 111 };
 112
 113 static int leopard_mmc_gpio = -EINVAL;
 114
 115 static void dm355leopard_mmcsd_gpios(unsigned gpio)
 116 {
 117         gpio_request(gpio + 0, "mmc0_ro");
 118         gpio_request(gpio + 1, "mmc0_cd");
 119         gpio_request(gpio + 2, "mmc1_ro");
 120         gpio_request(gpio + 3, "mmc1_cd");
 121
 122         /* we "know" these are input-only so we don't
 123          * need to call gpio_direction_input()
 124          */
 125
 126         leopard_mmc_gpio = gpio;
 127 }
 128
 129 static struct i2c_board_info dm355leopard_i2c_info[] = {
 130         { I2C_BOARD_INFO("dm355leopard_msp", 0x25),
 131                 .platform_data = dm355leopard_mmcsd_gpios,
 132                 /* plus irq */ },
 133         /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
 134         /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
 135 };
 136
 137 static void __init leopard_init_i2c(void)
 138 {
 139         davinci_init_i2c(&i2c_pdata);
 140
 141         gpio_request(5, "dm355leopard_msp");
 142         gpio_direction_input(5);
 143         dm355leopard_i2c_info[0].irq = gpio_to_irq(5);
 144
 145         i2c_register_board_info(1, dm355leopard_i2c_info,
 146                         ARRAY_SIZE(dm355leopard_i2c_info));
 147 }
 148
 149 static struct resource dm355leopard_dm9000_rsrc[] = {
 150         {
 151                 /* addr */
 152                 .start  = 0x04000000,
 153                 .end    = 0x04000001,
 154                 .flags  = IORESOURCE_MEM,
 155         }, {
 156                 /* data */
 157                 .start  = 0x04000016,
 158                 .end    = 0x04000017,
 159                 .flags  = IORESOURCE_MEM,
 160         }, {
 161                 .flags  = IORESOURCE_IRQ
 162                         | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
 163         },
 164 };
 165
 166 static struct platform_device dm355leopard_dm9000 = {
 167         .name           = "dm9000",
 168         .id             = -1,
 169         .resource       = dm355leopard_dm9000_rsrc,
 170         .num_resources  = ARRAY_SIZE(dm355leopard_dm9000_rsrc),
 171 };
 172
 173 static struct platform_device *davinci_leopard_devices[] __initdata = {
 174         &dm355leopard_dm9000,
 175         &davinci_nand_device,
 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 #define USB_ID_VALUE    1       /* ID pulled low */
 213
 214 static struct spi_eeprom at25640a = {
 215         .byte_len       = SZ_64K / 8,
 216         .name           = "at25640a",
 217         .page_size      = 32,
 218         .flags          = EE_ADDR2,
 219 };
 220
 221 static const struct spi_board_info dm355_leopard_spi_info[] __initconst = {
 222         {
 223                 .modalias       = "at25",
 224                 .platform_data  = &at25640a,
 225                 .max_speed_hz   = 10 * 1000 * 1000,     /* at 3v3 */
 226                 .bus_num        = 0,
 227                 .chip_select    = 0,
 228                 .mode           = SPI_MODE_0,
 229         },
 230 };
 231
 232 static __init void dm355_leopard_init(void)
 233 {
 234         struct clk *aemif;
 235         int ret;
 236
 237         dm355_register_clocks();
 238
 239         ret = dm355_gpio_register();
 240         if (ret)
 241                 pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
 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 (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
 249                 clk_prepare_enable(aemif);
 250
 251         platform_add_devices(davinci_leopard_devices,
 252                              ARRAY_SIZE(davinci_leopard_devices));
 253         leopard_init_i2c();
 254         davinci_serial_init(dm355_serial_device);
 255
 256         /* NOTE:  NAND flash timings set by the UBL are slower than
 257          * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
 258          * but could be 0x0400008c for about 25% faster page reads.
 259          */
 260
 261         gpio_request(2, "usb_id_toggle");
 262         gpio_direction_output(2, USB_ID_VALUE);
 263         /* irlml6401 switches over 1A in under 8 msec */
 264         davinci_setup_usb(1000, 8);
 265
 266         davinci_setup_mmc(0, &dm355leopard_mmc_config);
 267         davinci_setup_mmc(1, &dm355leopard_mmc_config);
 268
 269         dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
 270                         ARRAY_SIZE(dm355_leopard_spi_info));
 271 }
 272
 273 MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
 274         .atag_offset  = 0x100,
 275         .map_io       = dm355_leopard_map_io,
 276         .init_irq     = davinci_irq_init,
 277         .init_time      = dm355_init_time,
 278         .init_machine = dm355_leopard_init,
 279         .init_late      = davinci_init_late,
 280         .dma_zone_size  = SZ_128M,
 281 MACHINE_END