arch/arm/mach-mx3/mach-mx31ads.c

   1 /*
   2  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   3  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   4  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/types.h>
  18 #include <linux/init.h>
  19 #include <linux/clk.h>
  20 #include <linux/serial_8250.h>
  21 #include <linux/gpio.h>
  22 #include <linux/i2c.h>
  23 #include <linux/irq.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/time.h>
  28 #include <asm/memory.h>
  29 #include <asm/mach/map.h>
  30 #include <mach/common.h>
  31 #include <mach/board-mx31ads.h>
  32 #include <mach/iomux-mx3.h>
  33
  34 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
  35 #include <linux/mfd/wm8350/audio.h>
  36 #include <linux/mfd/wm8350/core.h>
  37 #include <linux/mfd/wm8350/pmic.h>
  38 #endif
  39
  40 #include "devices-imx31.h"
  41 #include "devices.h"
  42
  43 /* PBC Board interrupt status register */
  44 #define PBC_INTSTATUS           0x000016
  45
  46 /* PBC Board interrupt current status register */
  47 #define PBC_INTCURR_STATUS      0x000018
  48
  49 /* PBC Interrupt mask register set address */
  50 #define PBC_INTMASK_SET         0x00001A
  51
  52 /* PBC Interrupt mask register clear address */
  53 #define PBC_INTMASK_CLEAR       0x00001C
  54
  55 /* External UART A */
  56 #define PBC_SC16C652_UARTA      0x010000
  57
  58 /* External UART B */
  59 #define PBC_SC16C652_UARTB      0x010010
  60
  61 #define PBC_INTSTATUS_REG       (PBC_INTSTATUS + PBC_BASE_ADDRESS)
  62 #define PBC_INTMASK_SET_REG     (PBC_INTMASK_SET + PBC_BASE_ADDRESS)
  63 #define PBC_INTMASK_CLEAR_REG   (PBC_INTMASK_CLEAR + PBC_BASE_ADDRESS)
  64 #define EXPIO_PARENT_INT        IOMUX_TO_IRQ(MX31_PIN_GPIO1_4)
  65
  66 #define MXC_IRQ_TO_EXPIO(irq)   ((irq) - MXC_EXP_IO_BASE)
  67
  68 #define EXPIO_INT_XUART_INTA    (MXC_EXP_IO_BASE + 10)
  69 #define EXPIO_INT_XUART_INTB    (MXC_EXP_IO_BASE + 11)
  70
  71 #define MXC_MAX_EXP_IO_LINES    16
  72 /*
  73  * This file contains the board-specific initialization routines.
  74  */
  75
  76 /*
  77  * The serial port definition structure.
  78  */
  79 static struct plat_serial8250_port serial_platform_data[] = {
  80         {
  81                 .membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTA),
  82                 .mapbase  = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTA),
  83                 .irq      = EXPIO_INT_XUART_INTA,
  84                 .uartclk  = 14745600,
  85                 .regshift = 0,
  86                 .iotype   = UPIO_MEM,
  87                 .flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
  88         }, {
  89                 .membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTB),
  90                 .mapbase  = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTB),
  91                 .irq      = EXPIO_INT_XUART_INTB,
  92                 .uartclk  = 14745600,
  93                 .regshift = 0,
  94                 .iotype   = UPIO_MEM,
  95                 .flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
  96         },
  97         {},
  98 };
  99
 100 static struct platform_device serial_device = {
 101         .name   = "serial8250",
 102         .id     = 0,
 103         .dev    = {
 104                 .platform_data = serial_platform_data,
 105         },
 106 };
 107
 108 static int __init mxc_init_extuart(void)
 109 {
 110         return platform_device_register(&serial_device);
 111 }
 112
 113 static const struct imxuart_platform_data uart_pdata __initconst = {
 114         .flags = IMXUART_HAVE_RTSCTS,
 115 };
 116
 117 static unsigned int uart_pins[] = {
 118         MX31_PIN_CTS1__CTS1,
 119         MX31_PIN_RTS1__RTS1,
 120         MX31_PIN_TXD1__TXD1,
 121         MX31_PIN_RXD1__RXD1
 122 };
 123
 124 static inline void mxc_init_imx_uart(void)
 125 {
 126         mxc_iomux_setup_multiple_pins(uart_pins, ARRAY_SIZE(uart_pins), "uart-0");
 127         imx31_add_imx_uart0(&uart_pdata);
 128 }
 129
 130 static void mx31ads_expio_irq_handler(u32 irq, struct irq_desc *desc)
 131 {
 132         u32 imr_val;
 133         u32 int_valid;
 134         u32 expio_irq;
 135
 136         imr_val = __raw_readw(PBC_INTMASK_SET_REG);
 137         int_valid = __raw_readw(PBC_INTSTATUS_REG) & imr_val;
 138
 139         expio_irq = MXC_EXP_IO_BASE;
 140         for (; int_valid != 0; int_valid >>= 1, expio_irq++) {
 141                 if ((int_valid & 1) == 0)
 142                         continue;
 143
 144                 generic_handle_irq(expio_irq);
 145         }
 146 }
 147
 148 /*
 149  * Disable an expio pin's interrupt by setting the bit in the imr.
 150  * @param irq           an expio virtual irq number
 151  */
 152 static void expio_mask_irq(struct irq_data *d)
 153 {
 154         u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
 155         /* mask the interrupt */
 156         __raw_writew(1 << expio, PBC_INTMASK_CLEAR_REG);
 157         __raw_readw(PBC_INTMASK_CLEAR_REG);
 158 }
 159
 160 /*
 161  * Acknowledge an expanded io pin's interrupt by clearing the bit in the isr.
 162  * @param irq           an expanded io virtual irq number
 163  */
 164 static void expio_ack_irq(struct irq_data *d)
 165 {
 166         u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
 167         /* clear the interrupt status */
 168         __raw_writew(1 << expio, PBC_INTSTATUS_REG);
 169 }
 170
 171 /*
 172  * Enable a expio pin's interrupt by clearing the bit in the imr.
 173  * @param irq           a expio virtual irq number
 174  */
 175 static void expio_unmask_irq(struct irq_data *d)
 176 {
 177         u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
 178         /* unmask the interrupt */
 179         __raw_writew(1 << expio, PBC_INTMASK_SET_REG);
 180 }
 181
 182 static struct irq_chip expio_irq_chip = {
 183         .name = "EXPIO(CPLD)",
 184         .irq_ack = expio_ack_irq,
 185         .irq_mask = expio_mask_irq,
 186         .irq_unmask = expio_unmask_irq,
 187 };
 188
 189 static void __init mx31ads_init_expio(void)
 190 {
 191         int i;
 192
 193         printk(KERN_INFO "MX31ADS EXPIO(CPLD) hardware\n");
 194
 195         /*
 196          * Configure INT line as GPIO input
 197          */
 198         mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_GPIO1_4, IOMUX_CONFIG_GPIO), "expio");
 199
 200         /* disable the interrupt and clear the status */
 201         __raw_writew(0xFFFF, PBC_INTMASK_CLEAR_REG);
 202         __raw_writew(0xFFFF, PBC_INTSTATUS_REG);
 203         for (i = MXC_EXP_IO_BASE; i < (MXC_EXP_IO_BASE + MXC_MAX_EXP_IO_LINES);
 204              i++) {
 205                 set_irq_chip(i, &expio_irq_chip);
 206                 set_irq_handler(i, handle_level_irq);
 207                 set_irq_flags(i, IRQF_VALID);
 208         }
 209         set_irq_type(EXPIO_PARENT_INT, IRQ_TYPE_LEVEL_HIGH);
 210         set_irq_chained_handler(EXPIO_PARENT_INT, mx31ads_expio_irq_handler);
 211 }
 212
 213 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
 214 /* This section defines setup for the Wolfson Microelectronics
 215  * 1133-EV1 PMU/audio board.  When other PMU boards are supported the
 216  * regulator definitions may be shared with them, but for now they can
 217  * only be used with this board so would generate warnings about
 218  * unused statics and some of the configuration is specific to this
 219  * module.
 220  */
 221
 222 /* CPU */
 223 static struct regulator_consumer_supply sw1a_consumers[] = {
 224         {
 225                 .supply = "cpu_vcc",
 226         }
 227 };
 228
 229 static struct regulator_init_data sw1a_data = {
 230         .constraints = {
 231                 .name = "SW1A",
 232                 .min_uV = 1275000,
 233                 .max_uV = 1600000,
 234                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 235                                   REGULATOR_CHANGE_MODE,
 236                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 237                                     REGULATOR_MODE_FAST,
 238                 .state_mem = {
 239                          .uV = 1400000,
 240                          .mode = REGULATOR_MODE_NORMAL,
 241                          .enabled = 1,
 242                  },
 243                 .initial_state = PM_SUSPEND_MEM,
 244                 .always_on = 1,
 245                 .boot_on = 1,
 246         },
 247         .num_consumer_supplies = ARRAY_SIZE(sw1a_consumers),
 248         .consumer_supplies = sw1a_consumers,
 249 };
 250
 251 /* System IO - High */
 252 static struct regulator_init_data viohi_data = {
 253         .constraints = {
 254                 .name = "VIOHO",
 255                 .min_uV = 2800000,
 256                 .max_uV = 2800000,
 257                 .state_mem = {
 258                          .uV = 2800000,
 259                          .mode = REGULATOR_MODE_NORMAL,
 260                          .enabled = 1,
 261                  },
 262                 .initial_state = PM_SUSPEND_MEM,
 263                 .always_on = 1,
 264                 .boot_on = 1,
 265         },
 266 };
 267
 268 /* System IO - Low */
 269 static struct regulator_init_data violo_data = {
 270         .constraints = {
 271                 .name = "VIOLO",
 272                 .min_uV = 1800000,
 273                 .max_uV = 1800000,
 274                 .state_mem = {
 275                          .uV = 1800000,
 276                          .mode = REGULATOR_MODE_NORMAL,
 277                          .enabled = 1,
 278                  },
 279                 .initial_state = PM_SUSPEND_MEM,
 280                 .always_on = 1,
 281                 .boot_on = 1,
 282         },
 283 };
 284
 285 /* DDR RAM */
 286 static struct regulator_init_data sw2a_data = {
 287         .constraints = {
 288                 .name = "SW2A",
 289                 .min_uV = 1800000,
 290                 .max_uV = 1800000,
 291                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 292                 .state_mem = {
 293                          .uV = 1800000,
 294                          .mode = REGULATOR_MODE_NORMAL,
 295                          .enabled = 1,
 296                  },
 297                 .state_disk = {
 298                          .mode = REGULATOR_MODE_NORMAL,
 299                          .enabled = 0,
 300                  },
 301                 .always_on = 1,
 302                 .boot_on = 1,
 303                 .initial_state = PM_SUSPEND_MEM,
 304         },
 305 };
 306
 307 static struct regulator_init_data ldo1_data = {
 308         .constraints = {
 309                 .name = "VCAM/VMMC1/VMMC2",
 310                 .min_uV = 2800000,
 311                 .max_uV = 2800000,
 312                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 313                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 314                 .apply_uV = 1,
 315         },
 316 };
 317
 318 static struct regulator_consumer_supply ldo2_consumers[] = {
 319         { .supply = "AVDD", .dev_name = "1-001a" },
 320         { .supply = "HPVDD", .dev_name = "1-001a" },
 321 };
 322
 323 /* CODEC and SIM */
 324 static struct regulator_init_data ldo2_data = {
 325         .constraints = {
 326                 .name = "VESIM/VSIM/AVDD",
 327                 .min_uV = 3300000,
 328                 .max_uV = 3300000,
 329                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 330                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 331                 .apply_uV = 1,
 332         },
 333         .num_consumer_supplies = ARRAY_SIZE(ldo2_consumers),
 334         .consumer_supplies = ldo2_consumers,
 335 };
 336
 337 /* General */
 338 static struct regulator_init_data vdig_data = {
 339         .constraints = {
 340                 .name = "VDIG",
 341                 .min_uV = 1500000,
 342                 .max_uV = 1500000,
 343                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 344                 .apply_uV = 1,
 345                 .always_on = 1,
 346                 .boot_on = 1,
 347         },
 348 };
 349
 350 /* Tranceivers */
 351 static struct regulator_init_data ldo4_data = {
 352         .constraints = {
 353                 .name = "VRF1/CVDD_2.775",
 354                 .min_uV = 2500000,
 355                 .max_uV = 2500000,
 356                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 357                 .apply_uV = 1,
 358                 .always_on = 1,
 359                 .boot_on = 1,
 360         },
 361 };
 362
 363 static struct wm8350_led_platform_data wm8350_led_data = {
 364         .name            = "wm8350:white",
 365         .default_trigger = "heartbeat",
 366         .max_uA          = 27899,
 367 };
 368
 369 static struct wm8350_audio_platform_data imx32ads_wm8350_setup = {
 370         .vmid_discharge_msecs = 1000,
 371         .drain_msecs = 30,
 372         .cap_discharge_msecs = 700,
 373         .vmid_charge_msecs = 700,
 374         .vmid_s_curve = WM8350_S_CURVE_SLOW,
 375         .dis_out4 = WM8350_DISCHARGE_SLOW,
 376         .dis_out3 = WM8350_DISCHARGE_SLOW,
 377         .dis_out2 = WM8350_DISCHARGE_SLOW,
 378         .dis_out1 = WM8350_DISCHARGE_SLOW,
 379         .vroi_out4 = WM8350_TIE_OFF_500R,
 380         .vroi_out3 = WM8350_TIE_OFF_500R,
 381         .vroi_out2 = WM8350_TIE_OFF_500R,
 382         .vroi_out1 = WM8350_TIE_OFF_500R,
 383         .vroi_enable = 0,
 384         .codec_current_on = WM8350_CODEC_ISEL_1_0,
 385         .codec_current_standby = WM8350_CODEC_ISEL_0_5,
 386         .codec_current_charge = WM8350_CODEC_ISEL_1_5,
 387 };
 388
 389 static int mx31_wm8350_init(struct wm8350 *wm8350)
 390 {
 391         wm8350_gpio_config(wm8350, 0, WM8350_GPIO_DIR_IN,
 392                            WM8350_GPIO0_PWR_ON_IN, WM8350_GPIO_ACTIVE_LOW,
 393                            WM8350_GPIO_PULL_UP, WM8350_GPIO_INVERT_OFF,
 394                            WM8350_GPIO_DEBOUNCE_ON);
 395
 396         wm8350_gpio_config(wm8350, 3, WM8350_GPIO_DIR_IN,
 397                            WM8350_GPIO3_PWR_OFF_IN, WM8350_GPIO_ACTIVE_HIGH,
 398                            WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
 399                            WM8350_GPIO_DEBOUNCE_ON);
 400
 401         wm8350_gpio_config(wm8350, 4, WM8350_GPIO_DIR_IN,
 402                            WM8350_GPIO4_MR_IN, WM8350_GPIO_ACTIVE_HIGH,
 403                            WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
 404                            WM8350_GPIO_DEBOUNCE_OFF);
 405
 406         wm8350_gpio_config(wm8350, 7, WM8350_GPIO_DIR_IN,
 407                            WM8350_GPIO7_HIBERNATE_IN, WM8350_GPIO_ACTIVE_HIGH,
 408                            WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
 409                            WM8350_GPIO_DEBOUNCE_OFF);
 410
 411         wm8350_gpio_config(wm8350, 6, WM8350_GPIO_DIR_OUT,
 412                            WM8350_GPIO6_SDOUT_OUT, WM8350_GPIO_ACTIVE_HIGH,
 413                            WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
 414                            WM8350_GPIO_DEBOUNCE_OFF);
 415
 416         wm8350_gpio_config(wm8350, 8, WM8350_GPIO_DIR_OUT,
 417                            WM8350_GPIO8_VCC_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
 418                            WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
 419                            WM8350_GPIO_DEBOUNCE_OFF);
 420
 421         wm8350_gpio_config(wm8350, 9, WM8350_GPIO_DIR_OUT,
 422                            WM8350_GPIO9_BATT_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
 423                            WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
 424                            WM8350_GPIO_DEBOUNCE_OFF);
 425
 426         wm8350_register_regulator(wm8350, WM8350_DCDC_1, &sw1a_data);
 427         wm8350_register_regulator(wm8350, WM8350_DCDC_3, &viohi_data);
 428         wm8350_register_regulator(wm8350, WM8350_DCDC_4, &violo_data);
 429         wm8350_register_regulator(wm8350, WM8350_DCDC_6, &sw2a_data);
 430         wm8350_register_regulator(wm8350, WM8350_LDO_1, &ldo1_data);
 431         wm8350_register_regulator(wm8350, WM8350_LDO_2, &ldo2_data);
 432         wm8350_register_regulator(wm8350, WM8350_LDO_3, &vdig_data);
 433         wm8350_register_regulator(wm8350, WM8350_LDO_4, &ldo4_data);
 434
 435         /* LEDs */
 436         wm8350_dcdc_set_slot(wm8350, WM8350_DCDC_5, 1, 1,
 437                              WM8350_DC5_ERRACT_SHUTDOWN_CONV);
 438         wm8350_isink_set_flash(wm8350, WM8350_ISINK_A,
 439                                WM8350_ISINK_FLASH_DISABLE,
 440                                WM8350_ISINK_FLASH_TRIG_BIT,
 441                                WM8350_ISINK_FLASH_DUR_32MS,
 442                                WM8350_ISINK_FLASH_ON_INSTANT,
 443                                WM8350_ISINK_FLASH_OFF_INSTANT,
 444                                WM8350_ISINK_FLASH_MODE_EN);
 445         wm8350_dcdc25_set_mode(wm8350, WM8350_DCDC_5,
 446                                WM8350_ISINK_MODE_BOOST,
 447                                WM8350_ISINK_ILIM_NORMAL,
 448                                WM8350_DC5_RMP_20V,
 449                                WM8350_DC5_FBSRC_ISINKA);
 450         wm8350_register_led(wm8350, 0, WM8350_DCDC_5, WM8350_ISINK_A,
 451                             &wm8350_led_data);
 452
 453         wm8350->codec.platform_data = &imx32ads_wm8350_setup;
 454
 455         regulator_has_full_constraints();
 456
 457         return 0;
 458 }
 459
 460 static struct wm8350_platform_data __initdata mx31_wm8350_pdata = {
 461         .init = mx31_wm8350_init,
 462         .irq_base = MXC_BOARD_IRQ_START + MXC_MAX_EXP_IO_LINES,
 463 };
 464 #endif
 465
 466 static struct i2c_board_info __initdata mx31ads_i2c1_devices[] = {
 467 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
 468         {
 469                 I2C_BOARD_INFO("wm8350", 0x1a),
 470                 .platform_data = &mx31_wm8350_pdata,
 471                 .irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
 472         },
 473 #endif
 474 };
 475
 476 static void mxc_init_i2c(void)
 477 {
 478         i2c_register_board_info(1, mx31ads_i2c1_devices,
 479                                 ARRAY_SIZE(mx31ads_i2c1_devices));
 480
 481         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MOSI, IOMUX_CONFIG_ALT1));
 482         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MISO, IOMUX_CONFIG_ALT1));
 483
 484         imx31_add_imx_i2c1(NULL);
 485 }
 486
 487 static unsigned int ssi_pins[] = {
 488         MX31_PIN_SFS5__SFS5,
 489         MX31_PIN_SCK5__SCK5,
 490         MX31_PIN_SRXD5__SRXD5,
 491         MX31_PIN_STXD5__STXD5,
 492 };
 493
 494 static void mxc_init_audio(void)
 495 {
 496         imx31_add_imx_ssi(0, NULL);
 497         mxc_iomux_setup_multiple_pins(ssi_pins, ARRAY_SIZE(ssi_pins), "ssi");
 498 }
 499
 500 /*!
 501  * This structure defines static mappings for the i.MX31ADS board.
 502  */
 503 static struct map_desc mx31ads_io_desc[] __initdata = {
 504         {
 505                 .virtual        = MX31_CS4_BASE_ADDR_VIRT,
 506                 .pfn            = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 507                 .length         = MX31_CS4_SIZE / 2,
 508                 .type           = MT_DEVICE
 509         },
 510 };
 511
 512 /*!
 513  * Set up static virtual mappings.
 514  */
 515 static void __init mx31ads_map_io(void)
 516 {
 517         mx31_map_io();
 518         iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc));
 519 }
 520
 521 static void __init mx31ads_init_irq(void)
 522 {
 523         mx31_init_irq();
 524         mx31ads_init_expio();
 525 }
 526
 527 static void __init mx31ads_init(void)
 528 {
 529         mxc_init_extuart();
 530         mxc_init_imx_uart();
 531         mxc_init_i2c();
 532         mxc_init_audio();
 533 }
 534
 535 static void __init mx31ads_timer_init(void)
 536 {
 537         mx31_clocks_init(26000000);
 538 }
 539
 540 static struct sys_timer mx31ads_timer = {
 541         .init   = mx31ads_timer_init,
 542 };
 543
 544 /*
 545  * The following uses standard kernel macros defined in arch.h in order to
 546  * initialize __mach_desc_MX31ADS data structure.
 547  */
 548 MACHINE_START(MX31ADS, "Freescale MX31ADS")
 549         /* Maintainer: Freescale Semiconductor, Inc. */
 550         .boot_params = MX3x_PHYS_OFFSET + 0x100,
 551         .map_io = mx31ads_map_io,
 552         .init_early = imx31_init_early,
 553         .init_irq = mx31ads_init_irq,
 554         .timer = &mx31ads_timer,
 555         .init_machine = mx31ads_init,
 556 MACHINE_END