1========================== 2WatchDog Module Parameters 3========================== 4 5This file provides information on the module parameters of many of 6the Linux watchdog drivers. Watchdog driver parameter specs should 7be listed here unless the driver has its own driver-specific information 8file. 9 10See Documentation/admin-guide/kernel-parameters.rst for information on 11providing kernel parameters for builtin drivers versus loadable 12modules. 13 14------------------------------------------------- 15 16acquirewdt: 17 wdt_stop: 18 Acquire WDT 'stop' io port (default 0x43) 19 wdt_start: 20 Acquire WDT 'start' io port (default 0x443) 21 nowayout: 22 Watchdog cannot be stopped once started 23 (default=kernel config parameter) 24 25------------------------------------------------- 26 27advantechwdt: 28 wdt_stop: 29 Advantech WDT 'stop' io port (default 0x443) 30 wdt_start: 31 Advantech WDT 'start' io port (default 0x443) 32 timeout: 33 Watchdog timeout in seconds. 1<= timeout <=63, default=60. 34 nowayout: 35 Watchdog cannot be stopped once started 36 (default=kernel config parameter) 37 38------------------------------------------------- 39 40alim1535_wdt: 41 timeout: 42 Watchdog timeout in seconds. (0 < timeout < 18000, default=60 43 nowayout: 44 Watchdog cannot be stopped once started 45 (default=kernel config parameter) 46 47------------------------------------------------- 48 49alim7101_wdt: 50 timeout: 51 Watchdog timeout in seconds. (1<=timeout<=3600, default=30 52 use_gpio: 53 Use the gpio watchdog (required by old cobalt boards). 54 default=0/off/no 55 nowayout: 56 Watchdog cannot be stopped once started 57 (default=kernel config parameter) 58 59------------------------------------------------- 60 61ar7_wdt: 62 margin: 63 Watchdog margin in seconds (default=60) 64 nowayout: 65 Disable watchdog shutdown on close 66 (default=kernel config parameter) 67 68------------------------------------------------- 69 70armada_37xx_wdt: 71 timeout: 72 Watchdog timeout in seconds. (default=120) 73 nowayout: 74 Disable watchdog shutdown on close 75 (default=kernel config parameter) 76 77------------------------------------------------- 78 79at91rm9200_wdt: 80 wdt_time: 81 Watchdog time in seconds. (default=5) 82 nowayout: 83 Watchdog cannot be stopped once started 84 (default=kernel config parameter) 85 86------------------------------------------------- 87 88at91sam9_wdt: 89 heartbeat: 90 Watchdog heartbeats in seconds. (default = 15) 91 nowayout: 92 Watchdog cannot be stopped once started 93 (default=kernel config parameter) 94 95------------------------------------------------- 96 97bcm47xx_wdt: 98 wdt_time: 99 Watchdog time in seconds. (default=30) 100 nowayout: 101 Watchdog cannot be stopped once started 102 (default=kernel config parameter) 103 104------------------------------------------------- 105 106coh901327_wdt: 107 margin: 108 Watchdog margin in seconds (default 60s) 109 110------------------------------------------------- 111 112cpu5wdt: 113 port: 114 base address of watchdog card, default is 0x91 115 verbose: 116 be verbose, default is 0 (no) 117 ticks: 118 count down ticks, default is 10000 119 120------------------------------------------------- 121 122cpwd: 123 wd0_timeout: 124 Default watchdog0 timeout in 1/10secs 125 wd1_timeout: 126 Default watchdog1 timeout in 1/10secs 127 wd2_timeout: 128 Default watchdog2 timeout in 1/10secs 129 130------------------------------------------------- 131 132da9052wdt: 133 timeout: 134 Watchdog timeout in seconds. 2<= timeout <=131, default=2.048s 135 nowayout: 136 Watchdog cannot be stopped once started 137 (default=kernel config parameter) 138 139------------------------------------------------- 140 141davinci_wdt: 142 heartbeat: 143 Watchdog heartbeat period in seconds from 1 to 600, default 60 144 145------------------------------------------------- 146 147ebc-c384_wdt: 148 timeout: 149 Watchdog timeout in seconds. (1<=timeout<=15300, default=60) 150 nowayout: 151 Watchdog cannot be stopped once started 152 153------------------------------------------------- 154 155ep93xx_wdt: 156 nowayout: 157 Watchdog cannot be stopped once started 158 timeout: 159 Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD) 160 161------------------------------------------------- 162 163eurotechwdt: 164 nowayout: 165 Watchdog cannot be stopped once started 166 (default=kernel config parameter) 167 io: 168 Eurotech WDT io port (default=0x3f0) 169 irq: 170 Eurotech WDT irq (default=10) 171 ev: 172 Eurotech WDT event type (default is `int`) 173 174------------------------------------------------- 175 176gef_wdt: 177 nowayout: 178 Watchdog cannot be stopped once started 179 (default=kernel config parameter) 180 181------------------------------------------------- 182 183geodewdt: 184 timeout: 185 Watchdog timeout in seconds. 1<= timeout <=131, default=60. 186 nowayout: 187 Watchdog cannot be stopped once started 188 (default=kernel config parameter) 189 190------------------------------------------------- 191 192i6300esb: 193 heartbeat: 194 Watchdog heartbeat in seconds. (1<heartbeat<2046, default=30) 195 nowayout: 196 Watchdog cannot be stopped once started 197 (default=kernel config parameter) 198 199------------------------------------------------- 200 201iTCO_wdt: 202 heartbeat: 203 Watchdog heartbeat in seconds. 204 (2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=30) 205 nowayout: 206 Watchdog cannot be stopped once started 207 (default=kernel config parameter) 208 209------------------------------------------------- 210 211iTCO_vendor_support: 212 vendorsupport: 213 iTCO vendor specific support mode, default=0 (none), 214 1=SuperMicro Pent3, 2=SuperMicro Pent4+, 911=Broken SMI BIOS 215 216------------------------------------------------- 217 218ib700wdt: 219 timeout: 220 Watchdog timeout in seconds. 0<= timeout <=30, default=30. 221 nowayout: 222 Watchdog cannot be stopped once started 223 (default=kernel config parameter) 224 225------------------------------------------------- 226 227ibmasr: 228 nowayout: 229 Watchdog cannot be stopped once started 230 (default=kernel config parameter) 231 232------------------------------------------------- 233 234imx2_wdt: 235 timeout: 236 Watchdog timeout in seconds (default 60 s) 237 nowayout: 238 Watchdog cannot be stopped once started 239 (default=kernel config parameter) 240 241------------------------------------------------- 242 243indydog: 244 nowayout: 245 Watchdog cannot be stopped once started 246 (default=kernel config parameter) 247 248------------------------------------------------- 249 250iop_wdt: 251 nowayout: 252 Watchdog cannot be stopped once started 253 (default=kernel config parameter) 254 255------------------------------------------------- 256 257it8712f_wdt: 258 margin: 259 Watchdog margin in seconds (default 60) 260 nowayout: 261 Disable watchdog shutdown on close 262 (default=kernel config parameter) 263 264------------------------------------------------- 265 266it87_wdt: 267 nogameport: 268 Forbid the activation of game port, default=0 269 nocir: 270 Forbid the use of CIR (workaround for some buggy setups); set to 1 if 271system resets despite watchdog daemon running, default=0 272 exclusive: 273 Watchdog exclusive device open, default=1 274 timeout: 275 Watchdog timeout in seconds, default=60 276 testmode: 277 Watchdog test mode (1 = no reboot), default=0 278 nowayout: 279 Watchdog cannot be stopped once started 280 (default=kernel config parameter) 281 282------------------------------------------------- 283 284ixp4xx_wdt: 285 heartbeat: 286 Watchdog heartbeat in seconds (default 60s) 287 nowayout: 288 Watchdog cannot be stopped once started 289 (default=kernel config parameter) 290 291------------------------------------------------- 292 293ks8695_wdt: 294 wdt_time: 295 Watchdog time in seconds. (default=5) 296 nowayout: 297 Watchdog cannot be stopped once started 298 (default=kernel config parameter) 299 300------------------------------------------------- 301 302machzwd: 303 nowayout: 304 Watchdog cannot be stopped once started 305 (default=kernel config parameter) 306 action: 307 after watchdog resets, generate: 308 0 = RESET(*) 1 = SMI 2 = NMI 3 = SCI 309 310------------------------------------------------- 311 312max63xx_wdt: 313 heartbeat: 314 Watchdog heartbeat period in seconds from 1 to 60, default 60 315 nowayout: 316 Watchdog cannot be stopped once started 317 (default=kernel config parameter) 318 nodelay: 319 Force selection of a timeout setting without initial delay 320 (max6373/74 only, default=0) 321 322------------------------------------------------- 323 324mixcomwd: 325 nowayout: 326 Watchdog cannot be stopped once started 327 (default=kernel config parameter) 328 329------------------------------------------------- 330 331mpc8xxx_wdt: 332 timeout: 333 Watchdog timeout in ticks. (0<timeout<65536, default=65535) 334 reset: 335 Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset 336 nowayout: 337 Watchdog cannot be stopped once started 338 (default=kernel config parameter) 339 340------------------------------------------------- 341 342mv64x60_wdt: 343 nowayout: 344 Watchdog cannot be stopped once started 345 (default=kernel config parameter) 346 347------------------------------------------------- 348 349ni903x_wdt: 350 timeout: 351 Initial watchdog timeout in seconds (0<timeout<516, default=60) 352 nowayout: 353 Watchdog cannot be stopped once started 354 (default=kernel config parameter) 355 356------------------------------------------------- 357 358nic7018_wdt: 359 timeout: 360 Initial watchdog timeout in seconds (0<timeout<464, default=80) 361 nowayout: 362 Watchdog cannot be stopped once started 363 (default=kernel config parameter) 364 365------------------------------------------------- 366 367nuc900_wdt: 368 heartbeat: 369 Watchdog heartbeats in seconds. 370 (default = 15) 371 nowayout: 372 Watchdog cannot be stopped once started 373 (default=kernel config parameter) 374 375------------------------------------------------- 376 377omap_wdt: 378 timer_margin: 379 initial watchdog timeout (in seconds) 380 early_enable: 381 Watchdog is started on module insertion (default=0 382 nowayout: 383 Watchdog cannot be stopped once started 384 (default=kernel config parameter) 385 386------------------------------------------------- 387 388orion_wdt: 389 heartbeat: 390 Initial watchdog heartbeat in seconds 391 nowayout: 392 Watchdog cannot be stopped once started 393 (default=kernel config parameter) 394 395------------------------------------------------- 396 397pc87413_wdt: 398 io: 399 pc87413 WDT I/O port (default: io). 400 timeout: 401 Watchdog timeout in minutes (default=timeout). 402 nowayout: 403 Watchdog cannot be stopped once started 404 (default=kernel config parameter) 405 406------------------------------------------------- 407 408pika_wdt: 409 heartbeat: 410 Watchdog heartbeats in seconds. (default = 15) 411 nowayout: 412 Watchdog cannot be stopped once started 413 (default=kernel config parameter) 414 415------------------------------------------------- 416 417pnx4008_wdt: 418 heartbeat: 419 Watchdog heartbeat period in seconds from 1 to 60, default 19 420 nowayout: 421 Set to 1 to keep watchdog running after device release 422 423------------------------------------------------- 424 425pnx833x_wdt: 426 timeout: 427 Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds) 428 nowayout: 429 Watchdog cannot be stopped once started 430 (default=kernel config parameter) 431 start_enabled: 432 Watchdog is started on module insertion (default=1) 433 434------------------------------------------------- 435 436rc32434_wdt: 437 timeout: 438 Watchdog timeout value, in seconds (default=20) 439 nowayout: 440 Watchdog cannot be stopped once started 441 (default=kernel config parameter) 442 443------------------------------------------------- 444 445riowd: 446 riowd_timeout: 447 Watchdog timeout in minutes (default=1) 448 449------------------------------------------------- 450 451s3c2410_wdt: 452 tmr_margin: 453 Watchdog tmr_margin in seconds. (default=15) 454 tmr_atboot: 455 Watchdog is started at boot time if set to 1, default=0 456 nowayout: 457 Watchdog cannot be stopped once started 458 (default=kernel config parameter) 459 soft_noboot: 460 Watchdog action, set to 1 to ignore reboots, 0 to reboot 461 debug: 462 Watchdog debug, set to >1 for debug, (default 0) 463 464------------------------------------------------- 465 466sa1100_wdt: 467 margin: 468 Watchdog margin in seconds (default 60s) 469 470------------------------------------------------- 471 472sb_wdog: 473 timeout: 474 Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs) 475 476------------------------------------------------- 477 478sbc60xxwdt: 479 wdt_stop: 480 SBC60xx WDT 'stop' io port (default 0x45) 481 wdt_start: 482 SBC60xx WDT 'start' io port (default 0x443) 483 timeout: 484 Watchdog timeout in seconds. (1<=timeout<=3600, default=30) 485 nowayout: 486 Watchdog cannot be stopped once started 487 (default=kernel config parameter) 488 489------------------------------------------------- 490 491sbc7240_wdt: 492 timeout: 493 Watchdog timeout in seconds. (1<=timeout<=255, default=30) 494 nowayout: 495 Disable watchdog when closing device file 496 497------------------------------------------------- 498 499sbc8360: 500 timeout: 501 Index into timeout table (0-63) (default=27 (60s)) 502 nowayout: 503 Watchdog cannot be stopped once started 504 (default=kernel config parameter) 505 506------------------------------------------------- 507 508sbc_epx_c3: 509 nowayout: 510 Watchdog cannot be stopped once started 511 (default=kernel config parameter) 512 513------------------------------------------------- 514 515sbc_fitpc2_wdt: 516 margin: 517 Watchdog margin in seconds (default 60s) 518 nowayout: 519 Watchdog cannot be stopped once started 520 521------------------------------------------------- 522 523sbsa_gwdt: 524 timeout: 525 Watchdog timeout in seconds. (default 10s) 526 action: 527 Watchdog action at the first stage timeout, 528 set to 0 to ignore, 1 to panic. (default=0) 529 nowayout: 530 Watchdog cannot be stopped once started 531 (default=kernel config parameter) 532 533------------------------------------------------- 534 535sc1200wdt: 536 isapnp: 537 When set to 0 driver ISA PnP support will be disabled (default=1) 538 io: 539 io port 540 timeout: 541 range is 0-255 minutes, default is 1 542 nowayout: 543 Watchdog cannot be stopped once started 544 (default=kernel config parameter) 545 546------------------------------------------------- 547 548sc520_wdt: 549 timeout: 550 Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30) 551 nowayout: 552 Watchdog cannot be stopped once started 553 (default=kernel config parameter) 554 555------------------------------------------------- 556 557sch311x_wdt: 558 force_id: 559 Override the detected device ID 560 therm_trip: 561 Should a ThermTrip trigger the reset generator 562 timeout: 563 Watchdog timeout in seconds. 1<= timeout <=15300, default=60 564 nowayout: 565 Watchdog cannot be stopped once started 566 (default=kernel config parameter) 567 568------------------------------------------------- 569 570scx200_wdt: 571 margin: 572 Watchdog margin in seconds 573 nowayout: 574 Disable watchdog shutdown on close 575 576------------------------------------------------- 577 578shwdt: 579 clock_division_ratio: 580 Clock division ratio. Valid ranges are from 0x5 (1.31ms) 581 to 0x7 (5.25ms). (default=7) 582 heartbeat: 583 Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30 584 nowayout: 585 Watchdog cannot be stopped once started 586 (default=kernel config parameter) 587 588------------------------------------------------- 589 590smsc37b787_wdt: 591 timeout: 592 range is 1-255 units, default is 60 593 nowayout: 594 Watchdog cannot be stopped once started 595 (default=kernel config parameter) 596 597------------------------------------------------- 598 599softdog: 600 soft_margin: 601 Watchdog soft_margin in seconds. 602 (0 < soft_margin < 65536, default=60) 603 nowayout: 604 Watchdog cannot be stopped once started 605 (default=kernel config parameter) 606 soft_noboot: 607 Softdog action, set to 1 to ignore reboots, 0 to reboot 608 (default=0) 609 610------------------------------------------------- 611 612stmp3xxx_wdt: 613 heartbeat: 614 Watchdog heartbeat period in seconds from 1 to 4194304, default 19 615 616------------------------------------------------- 617 618tegra_wdt: 619 heartbeat: 620 Watchdog heartbeats in seconds. (default = 120) 621 nowayout: 622 Watchdog cannot be stopped once started 623 (default=kernel config parameter) 624 625------------------------------------------------- 626 627ts72xx_wdt: 628 timeout: 629 Watchdog timeout in seconds. (1 <= timeout <= 8, default=8) 630 nowayout: 631 Disable watchdog shutdown on close 632 633------------------------------------------------- 634 635twl4030_wdt: 636 nowayout: 637 Watchdog cannot be stopped once started 638 (default=kernel config parameter) 639 640------------------------------------------------- 641 642txx9wdt: 643 timeout: 644 Watchdog timeout in seconds. (0<timeout<N, default=60) 645 nowayout: 646 Watchdog cannot be stopped once started 647 (default=kernel config parameter) 648 649------------------------------------------------- 650 651uniphier_wdt: 652 timeout: 653 Watchdog timeout in power of two seconds. 654 (1 <= timeout <= 128, default=64) 655 nowayout: 656 Watchdog cannot be stopped once started 657 (default=kernel config parameter) 658 659------------------------------------------------- 660 661w83627hf_wdt: 662 wdt_io: 663 w83627hf/thf WDT io port (default 0x2E) 664 timeout: 665 Watchdog timeout in seconds. 1 <= timeout <= 255, default=60. 666 nowayout: 667 Watchdog cannot be stopped once started 668 (default=kernel config parameter) 669 670------------------------------------------------- 671 672w83877f_wdt: 673 timeout: 674 Watchdog timeout in seconds. (1<=timeout<=3600, default=30) 675 nowayout: 676 Watchdog cannot be stopped once started 677 (default=kernel config parameter) 678 679------------------------------------------------- 680 681w83977f_wdt: 682 timeout: 683 Watchdog timeout in seconds (15..7635), default=45) 684 testmode: 685 Watchdog testmode (1 = no reboot), default=0 686 nowayout: 687 Watchdog cannot be stopped once started 688 (default=kernel config parameter) 689 690------------------------------------------------- 691 692wafer5823wdt: 693 timeout: 694 Watchdog timeout in seconds. 1 <= timeout <= 255, default=60. 695 nowayout: 696 Watchdog cannot be stopped once started 697 (default=kernel config parameter) 698 699------------------------------------------------- 700 701wdt285: 702 soft_margin: 703 Watchdog timeout in seconds (default=60) 704 705------------------------------------------------- 706 707wdt977: 708 timeout: 709 Watchdog timeout in seconds (60..15300, default=60) 710 testmode: 711 Watchdog testmode (1 = no reboot), default=0 712 nowayout: 713 Watchdog cannot be stopped once started 714 (default=kernel config parameter) 715 716------------------------------------------------- 717 718wm831x_wdt: 719 nowayout: 720 Watchdog cannot be stopped once started 721 (default=kernel config parameter) 722 723------------------------------------------------- 724 725wm8350_wdt: 726 nowayout: 727 Watchdog cannot be stopped once started 728 (default=kernel config parameter) 729 730------------------------------------------------- 731 732sun4v_wdt: 733 timeout_ms: 734 Watchdog timeout in milliseconds 1..180000, default=60000) 735 nowayout: 736 Watchdog cannot be stopped once started 737