1 ==========================
2 WatchDog Module Parameters
3 ==========================
5 This file provides information on the module parameters of many of
6 the Linux watchdog drivers. Watchdog driver parameter specs should
7 be listed here unless the driver has its own driver-specific information
10 See Documentation/admin-guide/kernel-parameters.rst for information on
11 providing kernel parameters for builtin drivers versus loadable
14 -------------------------------------------------
18 Maximum time, in seconds, for which the watchdog framework will take
19 care of pinging a running hardware watchdog until userspace opens the
20 corresponding /dev/watchdogN device. A value of 0 means an infinite
21 timeout. Setting this to a non-zero value can be useful to ensure that
22 either userspace comes up properly, or the board gets reset and allows
23 fallback logic in the bootloader to try something else.
25 -------------------------------------------------
29 Acquire WDT 'stop' io port (default 0x43)
31 Acquire WDT 'start' io port (default 0x443)
33 Watchdog cannot be stopped once started
34 (default=kernel config parameter)
36 -------------------------------------------------
40 Advantech WDT 'stop' io port (default 0x443)
42 Advantech WDT 'start' io port (default 0x443)
44 Watchdog timeout in seconds. 1<= timeout <=63, default=60.
46 Watchdog cannot be stopped once started
47 (default=kernel config parameter)
49 -------------------------------------------------
53 Watchdog timeout in seconds. (0 < timeout < 18000, default=60
55 Watchdog cannot be stopped once started
56 (default=kernel config parameter)
58 -------------------------------------------------
62 Watchdog timeout in seconds. (1<=timeout<=3600, default=30
64 Use the gpio watchdog (required by old cobalt boards).
67 Watchdog cannot be stopped once started
68 (default=kernel config parameter)
70 -------------------------------------------------
74 Watchdog margin in seconds (default=60)
76 Disable watchdog shutdown on close
77 (default=kernel config parameter)
79 -------------------------------------------------
83 Watchdog timeout in seconds. (default=120)
85 Disable watchdog shutdown on close
86 (default=kernel config parameter)
88 -------------------------------------------------
92 Watchdog time in seconds. (default=5)
94 Watchdog cannot be stopped once started
95 (default=kernel config parameter)
97 -------------------------------------------------
101 Watchdog heartbeats in seconds. (default = 15)
103 Watchdog cannot be stopped once started
104 (default=kernel config parameter)
106 -------------------------------------------------
110 Watchdog time in seconds. (default=30)
112 Watchdog cannot be stopped once started
113 (default=kernel config parameter)
115 -------------------------------------------------
119 Watchdog margin in seconds (default 60s)
121 -------------------------------------------------
125 base address of watchdog card, default is 0x91
127 be verbose, default is 0 (no)
129 count down ticks, default is 10000
131 -------------------------------------------------
135 Default watchdog0 timeout in 1/10secs
137 Default watchdog1 timeout in 1/10secs
139 Default watchdog2 timeout in 1/10secs
141 -------------------------------------------------
145 Watchdog timeout in seconds. 2<= timeout <=131, default=2.048s
147 Watchdog cannot be stopped once started
148 (default=kernel config parameter)
150 -------------------------------------------------
154 Watchdog heartbeat period in seconds from 1 to 600, default 60
156 -------------------------------------------------
160 Watchdog timeout in seconds. (1<=timeout<=15300, default=60)
162 Watchdog cannot be stopped once started
164 -------------------------------------------------
168 Watchdog cannot be stopped once started
170 Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD)
172 -------------------------------------------------
176 Watchdog cannot be stopped once started
177 (default=kernel config parameter)
179 Eurotech WDT io port (default=0x3f0)
181 Eurotech WDT irq (default=10)
183 Eurotech WDT event type (default is `int`)
185 -------------------------------------------------
189 Watchdog cannot be stopped once started
190 (default=kernel config parameter)
192 -------------------------------------------------
196 Watchdog timeout in seconds. 1<= timeout <=131, default=60.
198 Watchdog cannot be stopped once started
199 (default=kernel config parameter)
201 -------------------------------------------------
205 Watchdog heartbeat in seconds. (1<heartbeat<2046, default=30)
207 Watchdog cannot be stopped once started
208 (default=kernel config parameter)
210 -------------------------------------------------
214 Watchdog heartbeat in seconds.
215 (2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=30)
217 Watchdog cannot be stopped once started
218 (default=kernel config parameter)
220 -------------------------------------------------
224 iTCO vendor specific support mode, default=0 (none),
225 1=SuperMicro Pent3, 2=SuperMicro Pent4+, 911=Broken SMI BIOS
227 -------------------------------------------------
231 Watchdog timeout in seconds. 0<= timeout <=30, default=30.
233 Watchdog cannot be stopped once started
234 (default=kernel config parameter)
236 -------------------------------------------------
240 Watchdog cannot be stopped once started
241 (default=kernel config parameter)
243 -------------------------------------------------
247 Watchdog timeout in seconds (default 60 s)
249 Watchdog cannot be stopped once started
250 (default=kernel config parameter)
252 -------------------------------------------------
256 Watchdog cannot be stopped once started
257 (default=kernel config parameter)
259 -------------------------------------------------
263 Watchdog cannot be stopped once started
264 (default=kernel config parameter)
266 -------------------------------------------------
270 Watchdog margin in seconds (default 60)
272 Disable watchdog shutdown on close
273 (default=kernel config parameter)
275 -------------------------------------------------
279 Forbid the activation of game port, default=0
281 Forbid the use of CIR (workaround for some buggy setups); set to 1 if
282 system resets despite watchdog daemon running, default=0
284 Watchdog exclusive device open, default=1
286 Watchdog timeout in seconds, default=60
288 Watchdog test mode (1 = no reboot), default=0
290 Watchdog cannot be stopped once started
291 (default=kernel config parameter)
293 -------------------------------------------------
297 Watchdog heartbeat in seconds (default 60s)
299 Watchdog cannot be stopped once started
300 (default=kernel config parameter)
302 -------------------------------------------------
306 Watchdog cannot be stopped once started
307 (default=kernel config parameter)
309 after watchdog resets, generate:
310 0 = RESET(*) 1 = SMI 2 = NMI 3 = SCI
312 -------------------------------------------------
316 Watchdog heartbeat period in seconds from 1 to 60, default 60
318 Watchdog cannot be stopped once started
319 (default=kernel config parameter)
321 Force selection of a timeout setting without initial delay
322 (max6373/74 only, default=0)
324 -------------------------------------------------
328 Watchdog cannot be stopped once started
329 (default=kernel config parameter)
331 -------------------------------------------------
335 Watchdog timeout in ticks. (0<timeout<65536, default=65535)
337 Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset
339 Watchdog cannot be stopped once started
340 (default=kernel config parameter)
342 -------------------------------------------------
346 Watchdog cannot be stopped once started
347 (default=kernel config parameter)
349 -------------------------------------------------
353 Initial watchdog timeout in seconds (0<timeout<516, default=60)
355 Watchdog cannot be stopped once started
356 (default=kernel config parameter)
358 -------------------------------------------------
362 Initial watchdog timeout in seconds (0<timeout<464, default=80)
364 Watchdog cannot be stopped once started
365 (default=kernel config parameter)
367 -------------------------------------------------
371 initial watchdog timeout (in seconds)
373 Watchdog is started on module insertion (default=0
375 Watchdog cannot be stopped once started
376 (default=kernel config parameter)
378 -------------------------------------------------
382 Initial watchdog heartbeat in seconds
384 Watchdog cannot be stopped once started
385 (default=kernel config parameter)
387 -------------------------------------------------
391 pc87413 WDT I/O port (default: io).
393 Watchdog timeout in minutes (default=timeout).
395 Watchdog cannot be stopped once started
396 (default=kernel config parameter)
398 -------------------------------------------------
402 Watchdog heartbeats in seconds. (default = 15)
404 Watchdog cannot be stopped once started
405 (default=kernel config parameter)
407 -------------------------------------------------
411 Watchdog heartbeat period in seconds from 1 to 60, default 19
413 Set to 1 to keep watchdog running after device release
415 -------------------------------------------------
419 Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds)
421 Watchdog cannot be stopped once started
422 (default=kernel config parameter)
424 Watchdog is started on module insertion (default=1)
426 -------------------------------------------------
430 Action taken when watchdog expires: 0 (power off), 1 (restart),
431 2 (dump and restart). (default=1)
433 Initial watchdog timeout in seconds. (default=60)
435 Watchdog cannot be stopped once started.
436 (default=kernel config parameter)
438 -------------------------------------------------
442 Watchdog timeout value, in seconds (default=20)
444 Watchdog cannot be stopped once started
445 (default=kernel config parameter)
447 -------------------------------------------------
451 Watchdog timeout in minutes (default=1)
453 -------------------------------------------------
457 Watchdog tmr_margin in seconds. (default=15)
459 Watchdog is started at boot time if set to 1, default=0
461 Watchdog cannot be stopped once started
462 (default=kernel config parameter)
464 Watchdog action, set to 1 to ignore reboots, 0 to reboot
466 Watchdog debug, set to >1 for debug, (default 0)
468 -------------------------------------------------
472 Watchdog margin in seconds (default 60s)
474 -------------------------------------------------
478 Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)
480 -------------------------------------------------
484 SBC60xx WDT 'stop' io port (default 0x45)
486 SBC60xx WDT 'start' io port (default 0x443)
488 Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
490 Watchdog cannot be stopped once started
491 (default=kernel config parameter)
493 -------------------------------------------------
497 Watchdog timeout in seconds. (1<=timeout<=255, default=30)
499 Disable watchdog when closing device file
501 -------------------------------------------------
505 Index into timeout table (0-63) (default=27 (60s))
507 Watchdog cannot be stopped once started
508 (default=kernel config parameter)
510 -------------------------------------------------
514 Watchdog cannot be stopped once started
515 (default=kernel config parameter)
517 -------------------------------------------------
521 Watchdog margin in seconds (default 60s)
523 Watchdog cannot be stopped once started
525 -------------------------------------------------
529 Watchdog timeout in seconds. (default 10s)
531 Watchdog action at the first stage timeout,
532 set to 0 to ignore, 1 to panic. (default=0)
534 Watchdog cannot be stopped once started
535 (default=kernel config parameter)
537 -------------------------------------------------
541 When set to 0 driver ISA PnP support will be disabled (default=1)
545 range is 0-255 minutes, default is 1
547 Watchdog cannot be stopped once started
548 (default=kernel config parameter)
550 -------------------------------------------------
554 Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30)
556 Watchdog cannot be stopped once started
557 (default=kernel config parameter)
559 -------------------------------------------------
563 Override the detected device ID
565 Should a ThermTrip trigger the reset generator
567 Watchdog timeout in seconds. 1<= timeout <=15300, default=60
569 Watchdog cannot be stopped once started
570 (default=kernel config parameter)
572 -------------------------------------------------
576 Watchdog margin in seconds
578 Disable watchdog shutdown on close
580 -------------------------------------------------
583 clock_division_ratio:
584 Clock division ratio. Valid ranges are from 0x5 (1.31ms)
585 to 0x7 (5.25ms). (default=7)
587 Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30
589 Watchdog cannot be stopped once started
590 (default=kernel config parameter)
592 -------------------------------------------------
596 range is 1-255 units, default is 60
598 Watchdog cannot be stopped once started
599 (default=kernel config parameter)
601 -------------------------------------------------
605 Watchdog soft_margin in seconds.
606 (0 < soft_margin < 65536, default=60)
608 Watchdog cannot be stopped once started
609 (default=kernel config parameter)
611 Softdog action, set to 1 to ignore reboots, 0 to reboot
614 -------------------------------------------------
618 Watchdog heartbeat period in seconds from 1 to 4194304, default 19
620 -------------------------------------------------
624 Watchdog heartbeats in seconds. (default = 120)
626 Watchdog cannot be stopped once started
627 (default=kernel config parameter)
629 -------------------------------------------------
633 Watchdog timeout in seconds. (1 <= timeout <= 8, default=8)
635 Disable watchdog shutdown on close
637 -------------------------------------------------
641 Watchdog cannot be stopped once started
642 (default=kernel config parameter)
644 -------------------------------------------------
648 Watchdog timeout in seconds. (0<timeout<N, default=60)
650 Watchdog cannot be stopped once started
651 (default=kernel config parameter)
653 -------------------------------------------------
657 Watchdog timeout in power of two seconds.
658 (1 <= timeout <= 128, default=64)
660 Watchdog cannot be stopped once started
661 (default=kernel config parameter)
663 -------------------------------------------------
667 w83627hf/thf WDT io port (default 0x2E)
669 Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
671 Watchdog cannot be stopped once started
672 (default=kernel config parameter)
674 -------------------------------------------------
678 Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
680 Watchdog cannot be stopped once started
681 (default=kernel config parameter)
683 -------------------------------------------------
687 Watchdog timeout in seconds (15..7635), default=45)
689 Watchdog testmode (1 = no reboot), default=0
691 Watchdog cannot be stopped once started
692 (default=kernel config parameter)
694 -------------------------------------------------
698 Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
700 Watchdog cannot be stopped once started
701 (default=kernel config parameter)
703 -------------------------------------------------
707 Watchdog timeout in seconds (default=60)
709 -------------------------------------------------
713 Watchdog timeout in seconds (60..15300, default=60)
715 Watchdog testmode (1 = no reboot), default=0
717 Watchdog cannot be stopped once started
718 (default=kernel config parameter)
720 -------------------------------------------------
724 Watchdog cannot be stopped once started
725 (default=kernel config parameter)
727 -------------------------------------------------
731 Watchdog cannot be stopped once started
732 (default=kernel config parameter)
734 -------------------------------------------------
738 Watchdog timeout in milliseconds 1..180000, default=60000)
740 Watchdog cannot be stopped once started