arch/mips/ar7/platform.c

   1 /*
   2  * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org>
   3  * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  */
  19
  20 #include <linux/init.h>
  21 #include <linux/types.h>
  22 #include <linux/module.h>
  23 #include <linux/delay.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/mtd/physmap.h>
  27 #include <linux/serial.h>
  28 #include <linux/serial_8250.h>
  29 #include <linux/ioport.h>
  30 #include <linux/io.h>
  31 #include <linux/vlynq.h>
  32 #include <linux/leds.h>
  33 #include <linux/string.h>
  34 #include <linux/etherdevice.h>
  35 #include <linux/phy.h>
  36 #include <linux/phy_fixed.h>
  37 #include <linux/gpio.h>
  38 #include <linux/clk.h>
  39
  40 #include <asm/addrspace.h>
  41 #include <asm/mach-ar7/ar7.h>
  42 #include <asm/mach-ar7/gpio.h>
  43 #include <asm/mach-ar7/prom.h>
  44
  45 /*****************************************************************************
  46  * VLYNQ Bus
  47  ****************************************************************************/
  48 struct plat_vlynq_data {
  49         struct plat_vlynq_ops ops;
  50         int gpio_bit;
  51         int reset_bit;
  52 };
  53
  54 static int vlynq_on(struct vlynq_device *dev)
  55 {
  56         int ret;
  57         struct plat_vlynq_data *pdata = dev->dev.platform_data;
  58
  59         ret = gpio_request(pdata->gpio_bit, "vlynq");
  60         if (ret)
  61                 goto out;
  62
  63         ar7_device_reset(pdata->reset_bit);
  64
  65         ret = ar7_gpio_disable(pdata->gpio_bit);
  66         if (ret)
  67                 goto out_enabled;
  68
  69         ret = ar7_gpio_enable(pdata->gpio_bit);
  70         if (ret)
  71                 goto out_enabled;
  72
  73         ret = gpio_direction_output(pdata->gpio_bit, 0);
  74         if (ret)
  75                 goto out_gpio_enabled;
  76
  77         msleep(50);
  78
  79         gpio_set_value(pdata->gpio_bit, 1);
  80
  81         msleep(50);
  82
  83         return 0;
  84
  85 out_gpio_enabled:
  86         ar7_gpio_disable(pdata->gpio_bit);
  87 out_enabled:
  88         ar7_device_disable(pdata->reset_bit);
  89         gpio_free(pdata->gpio_bit);
  90 out:
  91         return ret;
  92 }
  93
  94 static void vlynq_off(struct vlynq_device *dev)
  95 {
  96         struct plat_vlynq_data *pdata = dev->dev.platform_data;
  97
  98         ar7_gpio_disable(pdata->gpio_bit);
  99         gpio_free(pdata->gpio_bit);
 100         ar7_device_disable(pdata->reset_bit);
 101 }
 102
 103 static struct resource vlynq_low_res[] = {
 104         {
 105                 .name   = "regs",
 106                 .flags  = IORESOURCE_MEM,
 107                 .start  = AR7_REGS_VLYNQ0,
 108                 .end    = AR7_REGS_VLYNQ0 + 0xff,
 109         },
 110         {
 111                 .name   = "irq",
 112                 .flags  = IORESOURCE_IRQ,
 113                 .start  = 29,
 114                 .end    = 29,
 115         },
 116         {
 117                 .name   = "mem",
 118                 .flags  = IORESOURCE_MEM,
 119                 .start  = 0x04000000,
 120                 .end    = 0x04ffffff,
 121         },
 122         {
 123                 .name   = "devirq",
 124                 .flags  = IORESOURCE_IRQ,
 125                 .start  = 80,
 126                 .end    = 111,
 127         },
 128 };
 129
 130 static struct resource vlynq_high_res[] = {
 131         {
 132                 .name   = "regs",
 133                 .flags  = IORESOURCE_MEM,
 134                 .start  = AR7_REGS_VLYNQ1,
 135                 .end    = AR7_REGS_VLYNQ1 + 0xff,
 136         },
 137         {
 138                 .name   = "irq",
 139                 .flags  = IORESOURCE_IRQ,
 140                 .start  = 33,
 141                 .end    = 33,
 142         },
 143         {
 144                 .name   = "mem",
 145                 .flags  = IORESOURCE_MEM,
 146                 .start  = 0x0c000000,
 147                 .end    = 0x0cffffff,
 148         },
 149         {
 150                 .name   = "devirq",
 151                 .flags  = IORESOURCE_IRQ,
 152                 .start  = 112,
 153                 .end    = 143,
 154         },
 155 };
 156
 157 static struct plat_vlynq_data vlynq_low_data = {
 158         .ops = {
 159                 .on     = vlynq_on,
 160                 .off    = vlynq_off,
 161         },
 162         .reset_bit      = 20,
 163         .gpio_bit       = 18,
 164 };
 165
 166 static struct plat_vlynq_data vlynq_high_data = {
 167         .ops = {
 168                 .on     = vlynq_on,
 169                 .off    = vlynq_off,
 170         },
 171         .reset_bit      = 16,
 172         .gpio_bit       = 19,
 173 };
 174
 175 static struct platform_device vlynq_low = {
 176         .id             = 0,
 177         .name           = "vlynq",
 178         .dev = {
 179                 .platform_data  = &vlynq_low_data,
 180         },
 181         .resource       = vlynq_low_res,
 182         .num_resources  = ARRAY_SIZE(vlynq_low_res),
 183 };
 184
 185 static struct platform_device vlynq_high = {
 186         .id             = 1,
 187         .name           = "vlynq",
 188         .dev = {
 189                 .platform_data  = &vlynq_high_data,
 190         },
 191         .resource       = vlynq_high_res,
 192         .num_resources  = ARRAY_SIZE(vlynq_high_res),
 193 };
 194
 195 /*****************************************************************************
 196  * Flash
 197  ****************************************************************************/
 198 static struct resource physmap_flash_resource = {
 199         .name   = "mem",
 200         .flags  = IORESOURCE_MEM,
 201         .start  = 0x10000000,
 202         .end    = 0x107fffff,
 203 };
 204
 205 static const char *ar7_probe_types[] = { "ar7part", NULL };
 206
 207 static struct physmap_flash_data physmap_flash_data = {
 208         .width  = 2,
 209         .part_probe_types = ar7_probe_types,
 210 };
 211
 212 static struct platform_device physmap_flash = {
 213         .name           = "physmap-flash",
 214         .dev = {
 215                 .platform_data  = &physmap_flash_data,
 216         },
 217         .resource       = &physmap_flash_resource,
 218         .num_resources  = 1,
 219 };
 220
 221 /*****************************************************************************
 222  * Ethernet
 223  ****************************************************************************/
 224 static struct resource cpmac_low_res[] = {
 225         {
 226                 .name   = "regs",
 227                 .flags  = IORESOURCE_MEM,
 228                 .start  = AR7_REGS_MAC0,
 229                 .end    = AR7_REGS_MAC0 + 0x7ff,
 230         },
 231         {
 232                 .name   = "irq",
 233                 .flags  = IORESOURCE_IRQ,
 234                 .start  = 27,
 235                 .end    = 27,
 236         },
 237 };
 238
 239 static struct resource cpmac_high_res[] = {
 240         {
 241                 .name   = "regs",
 242                 .flags  = IORESOURCE_MEM,
 243                 .start  = AR7_REGS_MAC1,
 244                 .end    = AR7_REGS_MAC1 + 0x7ff,
 245         },
 246         {
 247                 .name   = "irq",
 248                 .flags  = IORESOURCE_IRQ,
 249                 .start  = 41,
 250                 .end    = 41,
 251         },
 252 };
 253
 254 static struct fixed_phy_status fixed_phy_status __initdata = {
 255         .link           = 1,
 256         .speed          = 100,
 257         .duplex         = 1,
 258 };
 259
 260 static struct plat_cpmac_data cpmac_low_data = {
 261         .reset_bit      = 17,
 262         .power_bit      = 20,
 263         .phy_mask       = 0x80000000,
 264 };
 265
 266 static struct plat_cpmac_data cpmac_high_data = {
 267         .reset_bit      = 21,
 268         .power_bit      = 22,
 269         .phy_mask       = 0x7fffffff,
 270 };
 271
 272 static u64 cpmac_dma_mask = DMA_BIT_MASK(32);
 273
 274 static struct platform_device cpmac_low = {
 275         .id             = 0,
 276         .name           = "cpmac",
 277         .dev = {
 278                 .dma_mask               = &cpmac_dma_mask,
 279                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 280                 .platform_data          = &cpmac_low_data,
 281         },
 282         .resource       = cpmac_low_res,
 283         .num_resources  = ARRAY_SIZE(cpmac_low_res),
 284 };
 285
 286 static struct platform_device cpmac_high = {
 287         .id             = 1,
 288         .name           = "cpmac",
 289         .dev = {
 290                 .dma_mask               = &cpmac_dma_mask,
 291                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 292                 .platform_data          = &cpmac_high_data,
 293         },
 294         .resource       = cpmac_high_res,
 295         .num_resources  = ARRAY_SIZE(cpmac_high_res),
 296 };
 297
 298 static void __init cpmac_get_mac(int instance, unsigned char *dev_addr)
 299 {
 300         char name[5], *mac;
 301
 302         sprintf(name, "mac%c", 'a' + instance);
 303         mac = prom_getenv(name);
 304         if (!mac && instance) {
 305                 sprintf(name, "mac%c", 'a');
 306                 mac = prom_getenv(name);
 307         }
 308
 309         if (mac) {
 310                 if (!mac_pton(mac, dev_addr)) {
 311                         pr_warn("cannot parse mac address, using random address\n");
 312                         eth_random_addr(dev_addr);
 313                 }
 314         } else
 315                 eth_random_addr(dev_addr);
 316 }
 317
 318 /*****************************************************************************
 319  * USB
 320  ****************************************************************************/
 321 static struct resource usb_res[] = {
 322         {
 323                 .name   = "regs",
 324                 .flags  = IORESOURCE_MEM,
 325                 .start  = AR7_REGS_USB,
 326                 .end    = AR7_REGS_USB + 0xff,
 327         },
 328         {
 329                 .name   = "irq",
 330                 .flags  = IORESOURCE_IRQ,
 331                 .start  = 32,
 332                 .end    = 32,
 333         },
 334         {
 335                 .name   = "mem",
 336                 .flags  = IORESOURCE_MEM,
 337                 .start  = 0x03400000,
 338                 .end    = 0x03401fff,
 339         },
 340 };
 341
 342 static struct platform_device ar7_udc = {
 343         .name           = "ar7_udc",
 344         .resource       = usb_res,
 345         .num_resources  = ARRAY_SIZE(usb_res),
 346 };
 347
 348 /*****************************************************************************
 349  * LEDs
 350  ****************************************************************************/
 351 static struct gpio_led default_leds[] = {
 352         {
 353                 .name                   = "status",
 354                 .gpio                   = 8,
 355                 .active_low             = 1,
 356         },
 357 };
 358
 359 static struct gpio_led titan_leds[] = {
 360         { .name = "status", .gpio = 8, .active_low = 1, },
 361         { .name = "wifi", .gpio = 13, .active_low = 1, },
 362 };
 363
 364 static struct gpio_led dsl502t_leds[] = {
 365         {
 366                 .name                   = "status",
 367                 .gpio                   = 9,
 368                 .active_low             = 1,
 369         },
 370         {
 371                 .name                   = "ethernet",
 372                 .gpio                   = 7,
 373                 .active_low             = 1,
 374         },
 375         {
 376                 .name                   = "usb",
 377                 .gpio                   = 12,
 378                 .active_low             = 1,
 379         },
 380 };
 381
 382 static struct gpio_led dg834g_leds[] = {
 383         {
 384                 .name                   = "ppp",
 385                 .gpio                   = 6,
 386                 .active_low             = 1,
 387         },
 388         {
 389                 .name                   = "status",
 390                 .gpio                   = 7,
 391                 .active_low             = 1,
 392         },
 393         {
 394                 .name                   = "adsl",
 395                 .gpio                   = 8,
 396                 .active_low             = 1,
 397         },
 398         {
 399                 .name                   = "wifi",
 400                 .gpio                   = 12,
 401                 .active_low             = 1,
 402         },
 403         {
 404                 .name                   = "power",
 405                 .gpio                   = 14,
 406                 .active_low             = 1,
 407                 .default_trigger        = "default-on",
 408         },
 409 };
 410
 411 static struct gpio_led fb_sl_leds[] = {
 412         {
 413                 .name                   = "1",
 414                 .gpio                   = 7,
 415         },
 416         {
 417                 .name                   = "2",
 418                 .gpio                   = 13,
 419                 .active_low             = 1,
 420         },
 421         {
 422                 .name                   = "3",
 423                 .gpio                   = 10,
 424                 .active_low             = 1,
 425         },
 426         {
 427                 .name                   = "4",
 428                 .gpio                   = 12,
 429                 .active_low             = 1,
 430         },
 431         {
 432                 .name                   = "5",
 433                 .gpio                   = 9,
 434                 .active_low             = 1,
 435         },
 436 };
 437
 438 static struct gpio_led fb_fon_leds[] = {
 439         {
 440                 .name                   = "1",
 441                 .gpio                   = 8,
 442         },
 443         {
 444                 .name                   = "2",
 445                 .gpio                   = 3,
 446                 .active_low             = 1,
 447         },
 448         {
 449                 .name                   = "3",
 450                 .gpio                   = 5,
 451         },
 452         {
 453                 .name                   = "4",
 454                 .gpio                   = 4,
 455                 .active_low             = 1,
 456         },
 457         {
 458                 .name                   = "5",
 459                 .gpio                   = 11,
 460                 .active_low             = 1,
 461         },
 462 };
 463
 464 static struct gpio_led gt701_leds[] = {
 465         {
 466                 .name                   = "inet:green",
 467                 .gpio                   = 13,
 468                 .active_low             = 1,
 469         },
 470         {
 471                 .name                   = "usb",
 472                 .gpio                   = 12,
 473                 .active_low             = 1,
 474         },
 475         {
 476                 .name                   = "inet:red",
 477                 .gpio                   = 9,
 478                 .active_low             = 1,
 479         },
 480         {
 481                 .name                   = "power:red",
 482                 .gpio                   = 7,
 483                 .active_low             = 1,
 484         },
 485         {
 486                 .name                   = "power:green",
 487                 .gpio                   = 8,
 488                 .active_low             = 1,
 489                 .default_trigger        = "default-on",
 490         },
 491         {
 492                 .name                   = "ethernet",
 493                 .gpio                   = 10,
 494                 .active_low             = 1,
 495         },
 496 };
 497
 498 static struct gpio_led_platform_data ar7_led_data;
 499
 500 static struct platform_device ar7_gpio_leds = {
 501         .name = "leds-gpio",
 502         .dev = {
 503                 .platform_data = &ar7_led_data,
 504         }
 505 };
 506
 507 static void __init detect_leds(void)
 508 {
 509         char *prid, *usb_prod;
 510
 511         /* Default LEDs */
 512         ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
 513         ar7_led_data.leds = default_leds;
 514
 515         /* FIXME: the whole thing is unreliable */
 516         prid = prom_getenv("ProductID");
 517         usb_prod = prom_getenv("usb_prod");
 518
 519         /* If we can't get the product id from PROM, use the default LEDs */
 520         if (!prid)
 521                 return;
 522
 523         if (strstr(prid, "Fritz_Box_FON")) {
 524                 ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
 525                 ar7_led_data.leds = fb_fon_leds;
 526         } else if (strstr(prid, "Fritz_Box_")) {
 527                 ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
 528                 ar7_led_data.leds = fb_sl_leds;
 529         } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
 530                 && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
 531                 ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
 532                 ar7_led_data.leds = dsl502t_leds;
 533         } else if (strstr(prid, "DG834")) {
 534                 ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
 535                 ar7_led_data.leds = dg834g_leds;
 536         } else if (strstr(prid, "CYWM") || strstr(prid, "CYWL")) {
 537                 ar7_led_data.num_leds = ARRAY_SIZE(titan_leds);
 538                 ar7_led_data.leds = titan_leds;
 539         } else if (strstr(prid, "GT701")) {
 540                 ar7_led_data.num_leds = ARRAY_SIZE(gt701_leds);
 541                 ar7_led_data.leds = gt701_leds;
 542         }
 543 }
 544
 545 /*****************************************************************************
 546  * Watchdog
 547  ****************************************************************************/
 548 static struct resource ar7_wdt_res = {
 549         .name           = "regs",
 550         .flags          = IORESOURCE_MEM,
 551         .start          = -1,   /* Filled at runtime */
 552         .end            = -1,   /* Filled at runtime */
 553 };
 554
 555 static struct platform_device ar7_wdt = {
 556         .name           = "ar7_wdt",
 557         .resource       = &ar7_wdt_res,
 558         .num_resources  = 1,
 559 };
 560
 561 /*****************************************************************************
 562  * Init
 563  ****************************************************************************/
 564 static int __init ar7_register_uarts(void)
 565 {
 566 #ifdef CONFIG_SERIAL_8250
 567         static struct uart_port uart_port __initdata;
 568         struct clk *bus_clk;
 569         int res;
 570
 571         memset(&uart_port, 0, sizeof(struct uart_port));
 572
 573         bus_clk = clk_get(NULL, "bus");
 574         if (IS_ERR(bus_clk))
 575                 panic("unable to get bus clk");
 576
 577         uart_port.type          = PORT_AR7;
 578         uart_port.uartclk       = clk_get_rate(bus_clk) / 2;
 579         uart_port.iotype        = UPIO_MEM32;
 580         uart_port.regshift      = 2;
 581
 582         uart_port.line          = 0;
 583         uart_port.irq           = AR7_IRQ_UART0;
 584         uart_port.mapbase       = AR7_REGS_UART0;
 585         uart_port.membase       = ioremap(uart_port.mapbase, 256);
 586
 587         res = early_serial_setup(&uart_port);
 588         if (res)
 589                 return res;
 590
 591         /* Only TNETD73xx have a second serial port */
 592         if (ar7_has_second_uart()) {
 593                 uart_port.line          = 1;
 594                 uart_port.irq           = AR7_IRQ_UART1;
 595                 uart_port.mapbase       = UR8_REGS_UART1;
 596                 uart_port.membase       = ioremap(uart_port.mapbase, 256);
 597
 598                 res = early_serial_setup(&uart_port);
 599                 if (res)
 600                         return res;
 601         }
 602 #endif
 603
 604         return 0;
 605 }
 606
 607 static void __init titan_fixup_devices(void)
 608 {
 609         /* Set vlynq0 data */
 610         vlynq_low_data.reset_bit = 15;
 611         vlynq_low_data.gpio_bit = 14;
 612
 613         /* Set vlynq1 data */
 614         vlynq_high_data.reset_bit = 16;
 615         vlynq_high_data.gpio_bit = 7;
 616
 617         /* Set vlynq0 resources */
 618         vlynq_low_res[0].start = TITAN_REGS_VLYNQ0;
 619         vlynq_low_res[0].end = TITAN_REGS_VLYNQ0 + 0xff;
 620         vlynq_low_res[1].start = 33;
 621         vlynq_low_res[1].end = 33;
 622         vlynq_low_res[2].start = 0x0c000000;
 623         vlynq_low_res[2].end = 0x0fffffff;
 624         vlynq_low_res[3].start = 80;
 625         vlynq_low_res[3].end = 111;
 626
 627         /* Set vlynq1 resources */
 628         vlynq_high_res[0].start = TITAN_REGS_VLYNQ1;
 629         vlynq_high_res[0].end = TITAN_REGS_VLYNQ1 + 0xff;
 630         vlynq_high_res[1].start = 34;
 631         vlynq_high_res[1].end = 34;
 632         vlynq_high_res[2].start = 0x40000000;
 633         vlynq_high_res[2].end = 0x43ffffff;
 634         vlynq_high_res[3].start = 112;
 635         vlynq_high_res[3].end = 143;
 636
 637         /* Set cpmac0 data */
 638         cpmac_low_data.phy_mask = 0x40000000;
 639
 640         /* Set cpmac1 data */
 641         cpmac_high_data.phy_mask = 0x80000000;
 642
 643         /* Set cpmac0 resources */
 644         cpmac_low_res[0].start = TITAN_REGS_MAC0;
 645         cpmac_low_res[0].end = TITAN_REGS_MAC0 + 0x7ff;
 646
 647         /* Set cpmac1 resources */
 648         cpmac_high_res[0].start = TITAN_REGS_MAC1;
 649         cpmac_high_res[0].end = TITAN_REGS_MAC1 + 0x7ff;
 650 }
 651
 652 static int __init ar7_register_devices(void)
 653 {
 654         void __iomem *bootcr;
 655         u32 val;
 656         int res;
 657
 658         res = ar7_register_uarts();
 659         if (res)
 660                 pr_err("unable to setup uart(s): %d\n", res);
 661
 662         res = platform_device_register(&physmap_flash);
 663         if (res)
 664                 pr_warn("unable to register physmap-flash: %d\n", res);
 665
 666         if (ar7_is_titan())
 667                 titan_fixup_devices();
 668
 669         ar7_device_disable(vlynq_low_data.reset_bit);
 670         res = platform_device_register(&vlynq_low);
 671         if (res)
 672                 pr_warn("unable to register vlynq-low: %d\n", res);
 673
 674         if (ar7_has_high_vlynq()) {
 675                 ar7_device_disable(vlynq_high_data.reset_bit);
 676                 res = platform_device_register(&vlynq_high);
 677                 if (res)
 678                         pr_warn("unable to register vlynq-high: %d\n", res);
 679         }
 680
 681         if (ar7_has_high_cpmac()) {
 682                 res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status);
 683                 if (!res) {
 684                         cpmac_get_mac(1, cpmac_high_data.dev_addr);
 685
 686                         res = platform_device_register(&cpmac_high);
 687                         if (res)
 688                                 pr_warn("unable to register cpmac-high: %d\n",
 689                                         res);
 690                 } else
 691                         pr_warn("unable to add cpmac-high phy: %d\n", res);
 692         } else
 693                 cpmac_low_data.phy_mask = 0xffffffff;
 694
 695         res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
 696         if (!res) {
 697                 cpmac_get_mac(0, cpmac_low_data.dev_addr);
 698                 res = platform_device_register(&cpmac_low);
 699                 if (res)
 700                         pr_warn("unable to register cpmac-low: %d\n", res);
 701         } else
 702                 pr_warn("unable to add cpmac-low phy: %d\n", res);
 703
 704         detect_leds();
 705         res = platform_device_register(&ar7_gpio_leds);
 706         if (res)
 707                 pr_warn("unable to register leds: %d\n", res);
 708
 709         res = platform_device_register(&ar7_udc);
 710         if (res)
 711                 pr_warn("unable to register usb slave: %d\n", res);
 712
 713         /* Register watchdog only if enabled in hardware */
 714         bootcr = ioremap_nocache(AR7_REGS_DCL, 4);
 715         val = readl(bootcr);
 716         iounmap(bootcr);
 717         if (val & AR7_WDT_HW_ENA) {
 718                 if (ar7_has_high_vlynq())
 719                         ar7_wdt_res.start = UR8_REGS_WDT;
 720                 else
 721                         ar7_wdt_res.start = AR7_REGS_WDT;
 722
 723                 ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
 724                 res = platform_device_register(&ar7_wdt);
 725                 if (res)
 726                         pr_warn("unable to register watchdog: %d\n", res);
 727         }
 728
 729         return 0;
 730 }
 731 device_initcall(ar7_register_devices);