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         .engine_type            = NAND_ECC_ENGINE_TYPE_ON_HOST,
  80         .ecc_placement          = NAND_ECC_PLACEMENT_INTERLEAVED,
  81         .ecc_bits               = 4,
  82         .bbt_options            = NAND_BBT_USE_FLASH,
  83 };
  84
  85 static struct resource davinci_nand_resources[] = {
  86         {
  87                 .start          = DM355_ASYNC_EMIF_DATA_CE0_BASE,
  88                 .end            = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
  89                 .flags          = IORESOURCE_MEM,
  90         }, {
  91                 .start          = DM355_ASYNC_EMIF_CONTROL_BASE,
  92                 .end            = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
  93                 .flags          = IORESOURCE_MEM,
  94         },
  95 };
  96
  97 static struct platform_device davinci_nand_device = {
  98         .name                   = "davinci_nand",
  99         .id                     = 0,
 100
 101         .num_resources          = ARRAY_SIZE(davinci_nand_resources),
 102         .resource               = davinci_nand_resources,
 103
 104         .dev                    = {
 105                 .platform_data  = &davinci_nand_data,
 106         },
 107 };
 108
 109 static struct davinci_i2c_platform_data i2c_pdata = {
 110         .bus_freq       = 400   /* kHz */,
 111         .bus_delay      = 0     /* usec */,
 112 };
 113
 114 static int leopard_mmc_gpio = -EINVAL;
 115
 116 static void dm355leopard_mmcsd_gpios(unsigned gpio)
 117 {
 118         gpio_request(gpio + 0, "mmc0_ro");
 119         gpio_request(gpio + 1, "mmc0_cd");
 120         gpio_request(gpio + 2, "mmc1_ro");
 121         gpio_request(gpio + 3, "mmc1_cd");
 122
 123         /* we "know" these are input-only so we don't
 124          * need to call gpio_direction_input()
 125          */
 126
 127         leopard_mmc_gpio = gpio;
 128 }
 129
 130 static struct i2c_board_info dm355leopard_i2c_info[] = {
 131         { I2C_BOARD_INFO("dm355leopard_msp", 0x25),
 132                 .platform_data = dm355leopard_mmcsd_gpios,
 133                 /* plus irq */ },
 134         /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
 135         /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
 136 };
 137
 138 static void __init leopard_init_i2c(void)
 139 {
 140         davinci_init_i2c(&i2c_pdata);
 141
 142         gpio_request(5, "dm355leopard_msp");
 143         gpio_direction_input(5);
 144         dm355leopard_i2c_info[0].irq = gpio_to_irq(5);
 145
 146         i2c_register_board_info(1, dm355leopard_i2c_info,
 147                         ARRAY_SIZE(dm355leopard_i2c_info));
 148 }
 149
 150 static struct resource dm355leopard_dm9000_rsrc[] = {
 151         {
 152                 /* addr */
 153                 .start  = 0x04000000,
 154                 .end    = 0x04000001,
 155                 .flags  = IORESOURCE_MEM,
 156         }, {
 157                 /* data */
 158                 .start  = 0x04000016,
 159                 .end    = 0x04000017,
 160                 .flags  = IORESOURCE_MEM,
 161         }, {
 162                 .flags  = IORESOURCE_IRQ
 163                         | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
 164         },
 165 };
 166
 167 static struct platform_device dm355leopard_dm9000 = {
 168         .name           = "dm9000",
 169         .id             = -1,
 170         .resource       = dm355leopard_dm9000_rsrc,
 171         .num_resources  = ARRAY_SIZE(dm355leopard_dm9000_rsrc),
 172 };
 173
 174 static struct platform_device *davinci_leopard_devices[] __initdata = {
 175         &dm355leopard_dm9000,
 176         &davinci_nand_device,
 177 };
 178
 179 static void __init dm355_leopard_map_io(void)
 180 {
 181         dm355_init();
 182 }
 183
 184 static int dm355leopard_mmc_get_cd(int module)
 185 {
 186         if (!gpio_is_valid(leopard_mmc_gpio))
 187                 return -ENXIO;
 188         /* low == card present */
 189         return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
 190 }
 191
 192 static int dm355leopard_mmc_get_ro(int module)
 193 {
 194         if (!gpio_is_valid(leopard_mmc_gpio))
 195                 return -ENXIO;
 196         /* high == card's write protect switch active */
 197         return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
 198 }
 199
 200 static struct davinci_mmc_config dm355leopard_mmc_config = {
 201         .get_cd         = dm355leopard_mmc_get_cd,
 202         .get_ro         = dm355leopard_mmc_get_ro,
 203         .wires          = 4,
 204         .max_freq       = 50000000,
 205         .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
 206 };
 207
 208 /* Don't connect anything to J10 unless you're only using USB host
 209  * mode *and* have to do so with some kind of gender-bender.  If
 210  * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
 211  * the ID pin won't need any help.
 212  */
 213 #define USB_ID_VALUE    1       /* ID pulled low */
 214
 215 static struct spi_eeprom at25640a = {
 216         .byte_len       = SZ_64K / 8,
 217         .name           = "at25640a",
 218         .page_size      = 32,
 219         .flags          = EE_ADDR2,
 220 };
 221
 222 static const struct spi_board_info dm355_leopard_spi_info[] __initconst = {
 223         {
 224                 .modalias       = "at25",
 225                 .platform_data  = &at25640a,
 226                 .max_speed_hz   = 10 * 1000 * 1000,     /* at 3v3 */
 227                 .bus_num        = 0,
 228                 .chip_select    = 0,
 229                 .mode           = SPI_MODE_0,
 230         },
 231 };
 232
 233 static __init void dm355_leopard_init(void)
 234 {
 235         struct clk *aemif;
 236         int ret;
 237
 238         dm355_register_clocks();
 239
 240         ret = dm355_gpio_register();
 241         if (ret)
 242                 pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
 243
 244         gpio_request(9, "dm9000");
 245         gpio_direction_input(9);
 246         dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9);
 247
 248         aemif = clk_get(&dm355leopard_dm9000.dev, "aemif");
 249         if (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
 250                 clk_prepare_enable(aemif);
 251
 252         platform_add_devices(davinci_leopard_devices,
 253                              ARRAY_SIZE(davinci_leopard_devices));
 254         leopard_init_i2c();
 255         davinci_serial_init(dm355_serial_device);
 256
 257         /* NOTE:  NAND flash timings set by the UBL are slower than
 258          * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
 259          * but could be 0x0400008c for about 25% faster page reads.
 260          */
 261
 262         gpio_request(2, "usb_id_toggle");
 263         gpio_direction_output(2, USB_ID_VALUE);
 264         /* irlml6401 switches over 1A in under 8 msec */
 265         davinci_setup_usb(1000, 8);
 266
 267         davinci_setup_mmc(0, &dm355leopard_mmc_config);
 268         davinci_setup_mmc(1, &dm355leopard_mmc_config);
 269
 270         dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
 271                         ARRAY_SIZE(dm355_leopard_spi_info));
 272 }
 273
 274 MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
 275         .atag_offset  = 0x100,
 276         .map_io       = dm355_leopard_map_io,
 277         .init_irq     = dm355_init_irq,
 278         .init_time      = dm355_init_time,
 279         .init_machine = dm355_leopard_init,
 280         .init_late      = davinci_init_late,
 281         .dma_zone_size  = SZ_128M,
 282 MACHINE_END