arch/arm/mach-at91/board-sam9261ek.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-sam9261ek.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2006 Atmel
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <linux/types.h>
  23 #include <linux/gpio.h>
  24 #include <linux/init.h>
  25 #include <linux/mm.h>
  26 #include <linux/module.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/spi/spi.h>
  29 #include <linux/spi/ads7846.h>
  30 #include <linux/spi/at73c213.h>
  31 #include <linux/clk.h>
  32 #include <linux/dm9000.h>
  33 #include <linux/fb.h>
  34 #include <linux/gpio_keys.h>
  35 #include <linux/input.h>
  36
  37 #include <video/atmel_lcdc.h>
  38
  39 #include <asm/setup.h>
  40 #include <asm/mach-types.h>
  41 #include <asm/irq.h>
  42
  43 #include <asm/mach/arch.h>
  44 #include <asm/mach/map.h>
  45 #include <asm/mach/irq.h>
  46
  47 #include <mach/hardware.h>
  48 #include <mach/board.h>
  49 #include <mach/at91sam9_smc.h>
  50 #include <mach/at91_shdwc.h>
  51 #include <mach/system_rev.h>
  52
  53 #include "sam9_smc.h"
  54 #include "generic.h"
  55
  56
  57 static void __init ek_init_early(void)
  58 {
  59         /* Initialize processor: 18.432 MHz crystal */
  60         at91_initialize(18432000);
  61
  62         /* Setup the LEDs */
  63         at91_init_leds(AT91_PIN_PA13, AT91_PIN_PA14);
  64
  65         /* DBGU on ttyS0. (Rx & Tx only) */
  66         at91_register_uart(0, 0, 0);
  67
  68         /* set serial console to ttyS0 (ie, DBGU) */
  69         at91_set_serial_console(0);
  70 }
  71
  72 /*
  73  * DM9000 ethernet device
  74  */
  75 #if defined(CONFIG_DM9000)
  76 static struct resource dm9000_resource[] = {
  77         [0] = {
  78                 .start  = AT91_CHIPSELECT_2,
  79                 .end    = AT91_CHIPSELECT_2 + 3,
  80                 .flags  = IORESOURCE_MEM
  81         },
  82         [1] = {
  83                 .start  = AT91_CHIPSELECT_2 + 0x44,
  84                 .end    = AT91_CHIPSELECT_2 + 0xFF,
  85                 .flags  = IORESOURCE_MEM
  86         },
  87         [2] = {
  88                 .start  = AT91_PIN_PC11,
  89                 .end    = AT91_PIN_PC11,
  90                 .flags  = IORESOURCE_IRQ
  91                         | IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE,
  92         }
  93 };
  94
  95 static struct dm9000_plat_data dm9000_platdata = {
  96         .flags          = DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM,
  97 };
  98
  99 static struct platform_device dm9000_device = {
 100         .name           = "dm9000",
 101         .id             = 0,
 102         .num_resources  = ARRAY_SIZE(dm9000_resource),
 103         .resource       = dm9000_resource,
 104         .dev            = {
 105                 .platform_data  = &dm9000_platdata,
 106         }
 107 };
 108
 109 /*
 110  * SMC timings for the DM9000.
 111  * Note: These timings were calculated for MASTER_CLOCK = 100000000 according to the DM9000 timings.
 112  */
 113 static struct sam9_smc_config __initdata dm9000_smc_config = {
 114         .ncs_read_setup         = 0,
 115         .nrd_setup              = 2,
 116         .ncs_write_setup        = 0,
 117         .nwe_setup              = 2,
 118
 119         .ncs_read_pulse         = 8,
 120         .nrd_pulse              = 4,
 121         .ncs_write_pulse        = 8,
 122         .nwe_pulse              = 4,
 123
 124         .read_cycle             = 16,
 125         .write_cycle            = 16,
 126
 127         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16,
 128         .tdf_cycles             = 1,
 129 };
 130
 131 static void __init ek_add_device_dm9000(void)
 132 {
 133         /* Configure chip-select 2 (DM9000) */
 134         sam9_smc_configure(2, &dm9000_smc_config);
 135
 136         /* Configure Reset signal as output */
 137         at91_set_gpio_output(AT91_PIN_PC10, 0);
 138
 139         /* Configure Interrupt pin as input, no pull-up */
 140         at91_set_gpio_input(AT91_PIN_PC11, 0);
 141
 142         platform_device_register(&dm9000_device);
 143 }
 144 #else
 145 static void __init ek_add_device_dm9000(void) {}
 146 #endif /* CONFIG_DM9000 */
 147
 148
 149 /*
 150  * USB Host Port
 151  */
 152 static struct at91_usbh_data __initdata ek_usbh_data = {
 153         .ports          = 2,
 154 };
 155
 156
 157 /*
 158  * USB Device Port
 159  */
 160 static struct at91_udc_data __initdata ek_udc_data = {
 161         .vbus_pin       = AT91_PIN_PB29,
 162         .pullup_pin     = 0,            /* pull-up driven by UDC */
 163 };
 164
 165
 166 /*
 167  * NAND flash
 168  */
 169 static struct mtd_partition __initdata ek_nand_partition[] = {
 170         {
 171                 .name   = "Partition 1",
 172                 .offset = 0,
 173                 .size   = SZ_256K,
 174         },
 175         {
 176                 .name   = "Partition 2",
 177                 .offset = MTDPART_OFS_NXTBLK,
 178                 .size   = MTDPART_SIZ_FULL,
 179         },
 180 };
 181
 182 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 183 {
 184         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 185         return ek_nand_partition;
 186 }
 187
 188 static struct atmel_nand_data __initdata ek_nand_data = {
 189         .ale            = 22,
 190         .cle            = 21,
 191 //      .det_pin        = ... not connected
 192         .rdy_pin        = AT91_PIN_PC15,
 193         .enable_pin     = AT91_PIN_PC14,
 194         .partition_info = nand_partitions,
 195 };
 196
 197 static struct sam9_smc_config __initdata ek_nand_smc_config = {
 198         .ncs_read_setup         = 0,
 199         .nrd_setup              = 1,
 200         .ncs_write_setup        = 0,
 201         .nwe_setup              = 1,
 202
 203         .ncs_read_pulse         = 3,
 204         .nrd_pulse              = 3,
 205         .ncs_write_pulse        = 3,
 206         .nwe_pulse              = 3,
 207
 208         .read_cycle             = 5,
 209         .write_cycle            = 5,
 210
 211         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 212         .tdf_cycles             = 2,
 213 };
 214
 215 static void __init ek_add_device_nand(void)
 216 {
 217         ek_nand_data.bus_width_16 = board_have_nand_16bit();
 218         /* setup bus-width (8 or 16) */
 219         if (ek_nand_data.bus_width_16)
 220                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
 221         else
 222                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
 223
 224         /* configure chip-select 3 (NAND) */
 225         sam9_smc_configure(3, &ek_nand_smc_config);
 226
 227         at91_add_device_nand(&ek_nand_data);
 228 }
 229
 230 /*
 231  * SPI related devices
 232  */
 233 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 234
 235 /*
 236  * ADS7846 Touchscreen
 237  */
 238 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 239
 240 static int ads7843_pendown_state(void)
 241 {
 242         return !at91_get_gpio_value(AT91_PIN_PC2);      /* Touchscreen PENIRQ */
 243 }
 244
 245 static struct ads7846_platform_data ads_info = {
 246         .model                  = 7843,
 247         .x_min                  = 150,
 248         .x_max                  = 3830,
 249         .y_min                  = 190,
 250         .y_max                  = 3830,
 251         .vref_delay_usecs       = 100,
 252         .x_plate_ohms           = 450,
 253         .y_plate_ohms           = 250,
 254         .pressure_max           = 15000,
 255         .debounce_max           = 1,
 256         .debounce_rep           = 0,
 257         .debounce_tol           = (~0),
 258         .get_pendown_state      = ads7843_pendown_state,
 259 };
 260
 261 static void __init ek_add_device_ts(void)
 262 {
 263         at91_set_B_periph(AT91_PIN_PC2, 1);     /* External IRQ0, with pullup */
 264         at91_set_gpio_input(AT91_PIN_PA11, 1);  /* Touchscreen BUSY signal */
 265 }
 266 #else
 267 static void __init ek_add_device_ts(void) {}
 268 #endif
 269
 270 /*
 271  * Audio
 272  */
 273 static struct at73c213_board_info at73c213_data = {
 274         .ssc_id         = 1,
 275 #if defined(CONFIG_MACH_AT91SAM9261EK)
 276         .shortname      = "AT91SAM9261-EK external DAC",
 277 #else
 278         .shortname      = "AT91SAM9G10-EK external DAC",
 279 #endif
 280 };
 281
 282 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 283 static void __init at73c213_set_clk(struct at73c213_board_info *info)
 284 {
 285         struct clk *pck2;
 286         struct clk *plla;
 287
 288         pck2 = clk_get(NULL, "pck2");
 289         plla = clk_get(NULL, "plla");
 290
 291         /* AT73C213 MCK Clock */
 292         at91_set_B_periph(AT91_PIN_PB31, 0);    /* PCK2 */
 293
 294         clk_set_parent(pck2, plla);
 295         clk_put(plla);
 296
 297         info->dac_clk = pck2;
 298 }
 299 #else
 300 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
 301 #endif
 302
 303 /*
 304  * SPI devices
 305  */
 306 static struct spi_board_info ek_spi_devices[] = {
 307         {       /* DataFlash chip */
 308                 .modalias       = "mtd_dataflash",
 309                 .chip_select    = 0,
 310                 .max_speed_hz   = 15 * 1000 * 1000,
 311                 .bus_num        = 0,
 312         },
 313 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 314         {
 315                 .modalias       = "ads7846",
 316                 .chip_select    = 2,
 317                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 318                 .bus_num        = 0,
 319                 .platform_data  = &ads_info,
 320                 .irq            = AT91SAM9261_ID_IRQ0,
 321                 .controller_data = (void *) AT91_PIN_PA28,      /* CS pin */
 322         },
 323 #endif
 324 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 325         {       /* DataFlash card - jumper (J12) configurable to CS3 or CS0 */
 326                 .modalias       = "mtd_dataflash",
 327                 .chip_select    = 3,
 328                 .max_speed_hz   = 15 * 1000 * 1000,
 329                 .bus_num        = 0,
 330         },
 331 #elif defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 332         {       /* AT73C213 DAC */
 333                 .modalias       = "at73c213",
 334                 .chip_select    = 3,
 335                 .max_speed_hz   = 10 * 1000 * 1000,
 336                 .bus_num        = 0,
 337                 .mode           = SPI_MODE_1,
 338                 .platform_data  = &at73c213_data,
 339                 .controller_data = (void*) AT91_PIN_PA29,       /* default for CS3 is PA6, but it must be PA29 */
 340         },
 341 #endif
 342 };
 343
 344 #else /* CONFIG_SPI_ATMEL_* */
 345 /* spi0 and mmc/sd share the same PIO pins: cannot be used at the same time */
 346
 347 /*
 348  * MCI (SD/MMC)
 349  * det_pin, wp_pin and vcc_pin are not connected
 350  */
 351 static struct at91_mmc_data __initdata ek_mmc_data = {
 352         .wire4          = 1,
 353 };
 354
 355 #endif /* CONFIG_SPI_ATMEL_* */
 356
 357
 358 /*
 359  * LCD Controller
 360  */
 361 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 362
 363 #if defined(CONFIG_FB_ATMEL_STN)
 364
 365 /* STN */
 366 static struct fb_videomode at91_stn_modes[] = {
 367         {
 368                 .name           = "SP06Q002 @ 75",
 369                 .refresh        = 75,
 370                 .xres           = 320,          .yres           = 240,
 371                 .pixclock       = KHZ2PICOS(1440),
 372
 373                 .left_margin    = 1,            .right_margin   = 1,
 374                 .upper_margin   = 0,            .lower_margin   = 0,
 375                 .hsync_len      = 1,            .vsync_len      = 1,
 376
 377                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 378                 .vmode          = FB_VMODE_NONINTERLACED,
 379         },
 380 };
 381
 382 static struct fb_monspecs at91fb_default_stn_monspecs = {
 383         .manufacturer   = "HIT",
 384         .monitor        = "SP06Q002",
 385
 386         .modedb         = at91_stn_modes,
 387         .modedb_len     = ARRAY_SIZE(at91_stn_modes),
 388         .hfmin          = 15000,
 389         .hfmax          = 64000,
 390         .vfmin          = 50,
 391         .vfmax          = 150,
 392 };
 393
 394 #define AT91SAM9261_DEFAULT_STN_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
 395                                         | ATMEL_LCDC_DISTYPE_STNMONO \
 396                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE \
 397                                         | ATMEL_LCDC_IFWIDTH_4 \
 398                                         | ATMEL_LCDC_SCANMOD_SINGLE)
 399
 400 static void at91_lcdc_stn_power_control(int on)
 401 {
 402         /* backlight */
 403         if (on) {       /* power up */
 404                 at91_set_gpio_value(AT91_PIN_PC14, 0);
 405                 at91_set_gpio_value(AT91_PIN_PC15, 0);
 406         } else {        /* power down */
 407                 at91_set_gpio_value(AT91_PIN_PC14, 1);
 408                 at91_set_gpio_value(AT91_PIN_PC15, 1);
 409         }
 410 }
 411
 412 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
 413         .default_bpp                    = 1,
 414         .default_dmacon                 = ATMEL_LCDC_DMAEN,
 415         .default_lcdcon2                = AT91SAM9261_DEFAULT_STN_LCDCON2,
 416         .default_monspecs               = &at91fb_default_stn_monspecs,
 417         .atmel_lcdfb_power_control      = at91_lcdc_stn_power_control,
 418         .guard_time                     = 1,
 419 #if defined(CONFIG_MACH_AT91SAM9G10EK)
 420         .lcd_wiring_mode                = ATMEL_LCDC_WIRING_RGB,
 421 #endif
 422 };
 423
 424 #else
 425
 426 /* TFT */
 427 static struct fb_videomode at91_tft_vga_modes[] = {
 428         {
 429                 .name           = "TX09D50VM1CCA @ 60",
 430                 .refresh        = 60,
 431                 .xres           = 240,          .yres           = 320,
 432                 .pixclock       = KHZ2PICOS(4965),
 433
 434                 .left_margin    = 1,            .right_margin   = 33,
 435                 .upper_margin   = 1,            .lower_margin   = 0,
 436                 .hsync_len      = 5,            .vsync_len      = 1,
 437
 438                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 439                 .vmode          = FB_VMODE_NONINTERLACED,
 440         },
 441 };
 442
 443 static struct fb_monspecs at91fb_default_tft_monspecs = {
 444         .manufacturer   = "HIT",
 445         .monitor        = "TX09D50VM1CCA",
 446
 447         .modedb         = at91_tft_vga_modes,
 448         .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
 449         .hfmin          = 15000,
 450         .hfmax          = 64000,
 451         .vfmin          = 50,
 452         .vfmax          = 150,
 453 };
 454
 455 #define AT91SAM9261_DEFAULT_TFT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
 456                                         | ATMEL_LCDC_DISTYPE_TFT    \
 457                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
 458
 459 static void at91_lcdc_tft_power_control(int on)
 460 {
 461         if (on)
 462                 at91_set_gpio_value(AT91_PIN_PA12, 0);  /* power up */
 463         else
 464                 at91_set_gpio_value(AT91_PIN_PA12, 1);  /* power down */
 465 }
 466
 467 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
 468         .lcdcon_is_backlight            = true,
 469         .default_bpp                    = 16,
 470         .default_dmacon                 = ATMEL_LCDC_DMAEN,
 471         .default_lcdcon2                = AT91SAM9261_DEFAULT_TFT_LCDCON2,
 472         .default_monspecs               = &at91fb_default_tft_monspecs,
 473         .atmel_lcdfb_power_control      = at91_lcdc_tft_power_control,
 474         .guard_time                     = 1,
 475 #if defined(CONFIG_MACH_AT91SAM9G10EK)
 476         .lcd_wiring_mode                = ATMEL_LCDC_WIRING_RGB,
 477 #endif
 478 };
 479 #endif
 480
 481 #else
 482 static struct atmel_lcdfb_info __initdata ek_lcdc_data;
 483 #endif
 484
 485
 486 /*
 487  * GPIO Buttons
 488  */
 489 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 490 static struct gpio_keys_button ek_buttons[] = {
 491         {
 492                 .gpio           = AT91_PIN_PA27,
 493                 .code           = BTN_0,
 494                 .desc           = "Button 0",
 495                 .active_low     = 1,
 496                 .wakeup         = 1,
 497         },
 498         {
 499                 .gpio           = AT91_PIN_PA26,
 500                 .code           = BTN_1,
 501                 .desc           = "Button 1",
 502                 .active_low     = 1,
 503                 .wakeup         = 1,
 504         },
 505         {
 506                 .gpio           = AT91_PIN_PA25,
 507                 .code           = BTN_2,
 508                 .desc           = "Button 2",
 509                 .active_low     = 1,
 510                 .wakeup         = 1,
 511         },
 512         {
 513                 .gpio           = AT91_PIN_PA24,
 514                 .code           = BTN_3,
 515                 .desc           = "Button 3",
 516                 .active_low     = 1,
 517                 .wakeup         = 1,
 518         }
 519 };
 520
 521 static struct gpio_keys_platform_data ek_button_data = {
 522         .buttons        = ek_buttons,
 523         .nbuttons       = ARRAY_SIZE(ek_buttons),
 524 };
 525
 526 static struct platform_device ek_button_device = {
 527         .name           = "gpio-keys",
 528         .id             = -1,
 529         .num_resources  = 0,
 530         .dev            = {
 531                 .platform_data  = &ek_button_data,
 532         }
 533 };
 534
 535 static void __init ek_add_device_buttons(void)
 536 {
 537         at91_set_gpio_input(AT91_PIN_PA27, 1);  /* btn0 */
 538         at91_set_deglitch(AT91_PIN_PA27, 1);
 539         at91_set_gpio_input(AT91_PIN_PA26, 1);  /* btn1 */
 540         at91_set_deglitch(AT91_PIN_PA26, 1);
 541         at91_set_gpio_input(AT91_PIN_PA25, 1);  /* btn2 */
 542         at91_set_deglitch(AT91_PIN_PA25, 1);
 543         at91_set_gpio_input(AT91_PIN_PA24, 1);  /* btn3 */
 544         at91_set_deglitch(AT91_PIN_PA24, 1);
 545
 546         platform_device_register(&ek_button_device);
 547 }
 548 #else
 549 static void __init ek_add_device_buttons(void) {}
 550 #endif
 551
 552 /*
 553  * LEDs
 554  */
 555 static struct gpio_led ek_leds[] = {
 556         {       /* "bottom" led, green, userled1 to be defined */
 557                 .name                   = "ds7",
 558                 .gpio                   = AT91_PIN_PA14,
 559                 .active_low             = 1,
 560                 .default_trigger        = "none",
 561         },
 562         {       /* "top" led, green, userled2 to be defined */
 563                 .name                   = "ds8",
 564                 .gpio                   = AT91_PIN_PA13,
 565                 .active_low             = 1,
 566                 .default_trigger        = "none",
 567         },
 568         {       /* "power" led, yellow */
 569                 .name                   = "ds1",
 570                 .gpio                   = AT91_PIN_PA23,
 571                 .default_trigger        = "heartbeat",
 572         }
 573 };
 574
 575 static void __init ek_board_init(void)
 576 {
 577         /* Serial */
 578         at91_add_device_serial();
 579         /* USB Host */
 580         at91_add_device_usbh(&ek_usbh_data);
 581         /* USB Device */
 582         at91_add_device_udc(&ek_udc_data);
 583         /* I2C */
 584         at91_add_device_i2c(NULL, 0);
 585         /* NAND */
 586         ek_add_device_nand();
 587         /* DM9000 ethernet */
 588         ek_add_device_dm9000();
 589
 590         /* spi0 and mmc/sd share the same PIO pins */
 591 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 592         /* SPI */
 593         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 594         /* Touchscreen */
 595         ek_add_device_ts();
 596         /* SSC (to AT73C213) */
 597         at73c213_set_clk(&at73c213_data);
 598         at91_add_device_ssc(AT91SAM9261_ID_SSC1, ATMEL_SSC_TX);
 599 #else
 600         /* MMC */
 601         at91_add_device_mmc(0, &ek_mmc_data);
 602 #endif
 603         /* LCD Controller */
 604         at91_add_device_lcdc(&ek_lcdc_data);
 605         /* Push Buttons */
 606         ek_add_device_buttons();
 607         /* LEDs */
 608         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 609 }
 610
 611 #if defined(CONFIG_MACH_AT91SAM9261EK)
 612 MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK")
 613 #else
 614 MACHINE_START(AT91SAM9G10EK, "Atmel AT91SAM9G10-EK")
 615 #endif
 616         /* Maintainer: Atmel */
 617         .timer          = &at91sam926x_timer,
 618         .map_io         = at91_map_io,
 619         .init_early     = ek_init_early,
 620         .init_irq       = at91_init_irq_default,
 621         .init_machine   = ek_board_init,
 622 MACHINE_END