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

   1 /*
   2  * TI DaVinci EVM board support
   3  *
   4  * Author: Kevin Hilman, Deep Root Systems, LLC
   5  *
   6  * 2007 (c) MontaVista Software, Inc. This file is licensed under
   7  * the terms of the GNU General Public License version 2. This program
   8  * is licensed "as is" without any warranty of any kind, whether express
   9  * or implied.
  10  */
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/init.h>
  14 #include <linux/dma-mapping.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/mtd/mtd.h>
  17 #include <linux/mtd/partitions.h>
  18 #include <linux/mtd/nand.h>
  19 #include <linux/i2c.h>
  20 #include <linux/io.h>
  21 #include <linux/gpio.h>
  22 #include <linux/clk.h>
  23 #include <linux/spi/spi.h>
  24 #include <linux/spi/eeprom.h>
  25
  26 #include <asm/setup.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30 #include <asm/mach/flash.h>
  31
  32 #include <mach/hardware.h>
  33 #include <mach/dm355.h>
  34 #include <mach/psc.h>
  35 #include <mach/common.h>
  36 #include <mach/i2c.h>
  37 #include <mach/serial.h>
  38 #include <mach/nand.h>
  39 #include <mach/mmc.h>
  40 #include <mach/common.h>
  41
  42 #define DAVINCI_ASYNC_EMIF_CONTROL_BASE         0x01e10000
  43 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE        0x02000000
  44
  45 /* NOTE:  this is geared for the standard config, with a socketed
  46  * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
  47  * swap chips, maybe with a different block size, partitioning may
  48  * need to be changed.
  49  */
  50 #define NAND_BLOCK_SIZE         SZ_128K
  51
  52 static struct mtd_partition davinci_nand_partitions[] = {
  53         {
  54                 /* UBL (a few copies) plus U-Boot */
  55                 .name           = "bootloader",
  56                 .offset         = 0,
  57                 .size           = 15 * NAND_BLOCK_SIZE,
  58                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
  59         }, {
  60                 /* U-Boot environment */
  61                 .name           = "params",
  62                 .offset         = MTDPART_OFS_APPEND,
  63                 .size           = 1 * NAND_BLOCK_SIZE,
  64                 .mask_flags     = 0,
  65         }, {
  66                 .name           = "kernel",
  67                 .offset         = MTDPART_OFS_APPEND,
  68                 .size           = SZ_4M,
  69                 .mask_flags     = 0,
  70         }, {
  71                 .name           = "filesystem1",
  72                 .offset         = MTDPART_OFS_APPEND,
  73                 .size           = SZ_512M,
  74                 .mask_flags     = 0,
  75         }, {
  76                 .name           = "filesystem2",
  77                 .offset         = MTDPART_OFS_APPEND,
  78                 .size           = MTDPART_SIZ_FULL,
  79                 .mask_flags     = 0,
  80         }
  81         /* two blocks with bad block table (and mirror) at the end */
  82 };
  83
  84 static struct davinci_nand_pdata davinci_nand_data = {
  85         .mask_chipsel           = BIT(14),
  86         .parts                  = davinci_nand_partitions,
  87         .nr_parts               = ARRAY_SIZE(davinci_nand_partitions),
  88         .ecc_mode               = NAND_ECC_HW_SYNDROME,
  89         .options                = NAND_USE_FLASH_BBT,
  90 };
  91
  92 static struct resource davinci_nand_resources[] = {
  93         {
  94                 .start          = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
  95                 .end            = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
  96                 .flags          = IORESOURCE_MEM,
  97         }, {
  98                 .start          = DAVINCI_ASYNC_EMIF_CONTROL_BASE,
  99                 .end            = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
 100                 .flags          = IORESOURCE_MEM,
 101         },
 102 };
 103
 104 static struct platform_device davinci_nand_device = {
 105         .name                   = "davinci_nand",
 106         .id                     = 0,
 107
 108         .num_resources          = ARRAY_SIZE(davinci_nand_resources),
 109         .resource               = davinci_nand_resources,
 110
 111         .dev                    = {
 112                 .platform_data  = &davinci_nand_data,
 113         },
 114 };
 115
 116 static struct davinci_i2c_platform_data i2c_pdata = {
 117         .bus_freq       = 400   /* kHz */,
 118         .bus_delay      = 0     /* usec */,
 119 };
 120
 121 static int dm355evm_mmc_gpios = -EINVAL;
 122
 123 static void dm355evm_mmcsd_gpios(unsigned gpio)
 124 {
 125         gpio_request(gpio + 0, "mmc0_ro");
 126         gpio_request(gpio + 1, "mmc0_cd");
 127         gpio_request(gpio + 2, "mmc1_ro");
 128         gpio_request(gpio + 3, "mmc1_cd");
 129
 130         /* we "know" these are input-only so we don't
 131          * need to call gpio_direction_input()
 132          */
 133
 134         dm355evm_mmc_gpios = gpio;
 135 }
 136
 137 static struct i2c_board_info dm355evm_i2c_info[] = {
 138         { I2C_BOARD_INFO("dm355evm_msp", 0x25),
 139                 .platform_data = dm355evm_mmcsd_gpios,
 140                 /* plus irq */ },
 141         /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
 142         /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
 143 };
 144
 145 static void __init evm_init_i2c(void)
 146 {
 147         davinci_init_i2c(&i2c_pdata);
 148
 149         gpio_request(5, "dm355evm_msp");
 150         gpio_direction_input(5);
 151         dm355evm_i2c_info[0].irq = gpio_to_irq(5);
 152
 153         i2c_register_board_info(1, dm355evm_i2c_info,
 154                         ARRAY_SIZE(dm355evm_i2c_info));
 155 }
 156
 157 static struct resource dm355evm_dm9000_rsrc[] = {
 158         {
 159                 /* addr */
 160                 .start  = 0x04014000,
 161                 .end    = 0x04014001,
 162                 .flags  = IORESOURCE_MEM,
 163         }, {
 164                 /* data */
 165                 .start  = 0x04014002,
 166                 .end    = 0x04014003,
 167                 .flags  = IORESOURCE_MEM,
 168         }, {
 169                 .flags  = IORESOURCE_IRQ
 170                         | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
 171         },
 172 };
 173
 174 static struct platform_device dm355evm_dm9000 = {
 175         .name           = "dm9000",
 176         .id             = -1,
 177         .resource       = dm355evm_dm9000_rsrc,
 178         .num_resources  = ARRAY_SIZE(dm355evm_dm9000_rsrc),
 179 };
 180
 181 static struct platform_device *davinci_evm_devices[] __initdata = {
 182         &dm355evm_dm9000,
 183         &davinci_nand_device,
 184 };
 185
 186 static struct davinci_uart_config uart_config __initdata = {
 187         .enabled_uarts = (1 << 0),
 188 };
 189
 190 static void __init dm355_evm_map_io(void)
 191 {
 192         dm355_init();
 193 }
 194
 195 static int dm355evm_mmc_get_cd(int module)
 196 {
 197         if (!gpio_is_valid(dm355evm_mmc_gpios))
 198                 return -ENXIO;
 199         /* low == card present */
 200         return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1);
 201 }
 202
 203 static int dm355evm_mmc_get_ro(int module)
 204 {
 205         if (!gpio_is_valid(dm355evm_mmc_gpios))
 206                 return -ENXIO;
 207         /* high == card's write protect switch active */
 208         return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0);
 209 }
 210
 211 static struct davinci_mmc_config dm355evm_mmc_config = {
 212         .get_cd         = dm355evm_mmc_get_cd,
 213         .get_ro         = dm355evm_mmc_get_ro,
 214         .wires          = 4,
 215         .max_freq       = 50000000,
 216         .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
 217         .version        = MMC_CTLR_VERSION_1,
 218 };
 219
 220 /* Don't connect anything to J10 unless you're only using USB host
 221  * mode *and* have to do so with some kind of gender-bender.  If
 222  * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
 223  * the ID pin won't need any help.
 224  */
 225 #ifdef CONFIG_USB_MUSB_PERIPHERAL
 226 #define USB_ID_VALUE    0       /* ID pulled high; *should* float */
 227 #else
 228 #define USB_ID_VALUE    1       /* ID pulled low */
 229 #endif
 230
 231 static struct spi_eeprom at25640a = {
 232         .byte_len       = SZ_64K / 8,
 233         .name           = "at25640a",
 234         .page_size      = 32,
 235         .flags          = EE_ADDR2,
 236 };
 237
 238 static struct spi_board_info dm355_evm_spi_info[] __initconst = {
 239         {
 240                 .modalias       = "at25",
 241                 .platform_data  = &at25640a,
 242                 .max_speed_hz   = 10 * 1000 * 1000,     /* at 3v3 */
 243                 .bus_num        = 0,
 244                 .chip_select    = 0,
 245                 .mode           = SPI_MODE_0,
 246         },
 247 };
 248
 249 static __init void dm355_evm_init(void)
 250 {
 251         struct clk *aemif;
 252
 253         gpio_request(1, "dm9000");
 254         gpio_direction_input(1);
 255         dm355evm_dm9000_rsrc[2].start = gpio_to_irq(1);
 256
 257         aemif = clk_get(&dm355evm_dm9000.dev, "aemif");
 258         if (IS_ERR(aemif))
 259                 WARN("%s: unable to get AEMIF clock\n", __func__);
 260         else
 261                 clk_enable(aemif);
 262
 263         platform_add_devices(davinci_evm_devices,
 264                              ARRAY_SIZE(davinci_evm_devices));
 265         evm_init_i2c();
 266         davinci_serial_init(&uart_config);
 267
 268         /* NOTE:  NAND flash timings set by the UBL are slower than
 269          * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
 270          * but could be 0x0400008c for about 25% faster page reads.
 271          */
 272
 273         gpio_request(2, "usb_id_toggle");
 274         gpio_direction_output(2, USB_ID_VALUE);
 275         /* irlml6401 switches over 1A in under 8 msec */
 276         setup_usb(500, 8);
 277
 278         davinci_setup_mmc(0, &dm355evm_mmc_config);
 279         davinci_setup_mmc(1, &dm355evm_mmc_config);
 280
 281         dm355_init_spi0(BIT(0), dm355_evm_spi_info,
 282                         ARRAY_SIZE(dm355_evm_spi_info));
 283 }
 284
 285 static __init void dm355_evm_irq_init(void)
 286 {
 287         davinci_irq_init();
 288 }
 289
 290 MACHINE_START(DAVINCI_DM355_EVM, "DaVinci DM355 EVM")
 291         .phys_io      = IO_PHYS,
 292         .io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 293         .boot_params  = (0x80000100),
 294         .map_io       = dm355_evm_map_io,
 295         .init_irq     = dm355_evm_irq_init,
 296         .timer        = &davinci_timer,
 297         .init_machine = dm355_evm_init,
 298 MACHINE_END