1This file provides information on the module parameters of many of
  2the Linux watchdog drivers.  Watchdog driver parameter specs should
  3be listed here unless the driver has its own driver-specific information
  4file.
  5
  6
  7See Documentation/kernel-parameters.txt for information on
  8providing kernel parameters for builtin drivers versus loadable
  9modules.
 10
 11
 12-------------------------------------------------
 13acquirewdt:
 14wdt_stop: Acquire WDT 'stop' io port (default 0x43)
 15wdt_start: Acquire WDT 'start' io port (default 0x443)
 16nowayout: Watchdog cannot be stopped once started
 17	(default=kernel config parameter)
 18-------------------------------------------------
 19advantechwdt:
 20wdt_stop: Advantech WDT 'stop' io port (default 0x443)
 21wdt_start: Advantech WDT 'start' io port (default 0x443)
 22timeout: Watchdog timeout in seconds. 1<= timeout <=63, default=60.
 23nowayout: Watchdog cannot be stopped once started
 24	(default=kernel config parameter)
 25-------------------------------------------------
 26alim1535_wdt:
 27timeout: Watchdog timeout in seconds. (0 < timeout < 18000, default=60
 28nowayout: Watchdog cannot be stopped once started
 29	(default=kernel config parameter)
 30-------------------------------------------------
 31alim7101_wdt:
 32timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30
 33use_gpio: Use the gpio watchdog (required by old cobalt boards).
 34	default=0/off/no
 35nowayout: Watchdog cannot be stopped once started
 36	(default=kernel config parameter)
 37-------------------------------------------------
 38ar7_wdt:
 39margin: Watchdog margin in seconds (default=60)
 40nowayout: Disable watchdog shutdown on close
 41	(default=kernel config parameter)
 42-------------------------------------------------
 43at32ap700x_wdt:
 44timeout: Timeout value. Limited to be 1 or 2 seconds. (default=2)
 45nowayout: Watchdog cannot be stopped once started
 46	(default=kernel config parameter)
 47-------------------------------------------------
 48at91rm9200_wdt:
 49wdt_time: Watchdog time in seconds. (default=5)
 50nowayout: Watchdog cannot be stopped once started
 51	(default=kernel config parameter)
 52-------------------------------------------------
 53at91sam9_wdt:
 54heartbeat: Watchdog heartbeats in seconds. (default = 15)
 55nowayout: Watchdog cannot be stopped once started
 56	(default=kernel config parameter)
 57-------------------------------------------------
 58bcm47xx_wdt:
 59wdt_time: Watchdog time in seconds. (default=30)
 60nowayout: Watchdog cannot be stopped once started
 61	(default=kernel config parameter)
 62-------------------------------------------------
 63bfin_wdt:
 64timeout: Watchdog timeout in seconds. (1<=timeout<=((2^32)/SCLK), default=20)
 65nowayout: Watchdog cannot be stopped once started
 66	(default=kernel config parameter)
 67-------------------------------------------------
 68coh901327_wdt:
 69margin: Watchdog margin in seconds (default 60s)
 70-------------------------------------------------
 71cpu5wdt:
 72port: base address of watchdog card, default is 0x91
 73verbose: be verbose, default is 0 (no)
 74ticks: count down ticks, default is 10000
 75-------------------------------------------------
 76cpwd:
 77wd0_timeout: Default watchdog0 timeout in 1/10secs
 78wd1_timeout: Default watchdog1 timeout in 1/10secs
 79wd2_timeout: Default watchdog2 timeout in 1/10secs
 80-------------------------------------------------
 81da9052wdt:
 82timeout: Watchdog timeout in seconds. 2<= timeout <=131, default=2.048s
 83nowayout: Watchdog cannot be stopped once started
 84	(default=kernel config parameter)
 85-------------------------------------------------
 86davinci_wdt:
 87heartbeat: Watchdog heartbeat period in seconds from 1 to 600, default 60
 88-------------------------------------------------
 89ep93xx_wdt:
 90nowayout: Watchdog cannot be stopped once started
 91timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD)
 92-------------------------------------------------
 93eurotechwdt:
 94nowayout: Watchdog cannot be stopped once started
 95	(default=kernel config parameter)
 96io: Eurotech WDT io port (default=0x3f0)
 97irq: Eurotech WDT irq (default=10)
 98ev: Eurotech WDT event type (default is `int')
 99-------------------------------------------------
100gef_wdt:
101nowayout: Watchdog cannot be stopped once started
102	(default=kernel config parameter)
103-------------------------------------------------
104geodewdt:
105timeout: Watchdog timeout in seconds. 1<= timeout <=131, default=60.
106nowayout: Watchdog cannot be stopped once started
107	(default=kernel config parameter)
108-------------------------------------------------
109i6300esb:
110heartbeat: Watchdog heartbeat in seconds. (1<heartbeat<2046, default=30)
111nowayout: Watchdog cannot be stopped once started
112	(default=kernel config parameter)
113-------------------------------------------------
114iTCO_wdt:
115heartbeat: Watchdog heartbeat in seconds.
116	(2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=30)
117nowayout: Watchdog cannot be stopped once started
118	(default=kernel config parameter)
119-------------------------------------------------
120iTCO_vendor_support:
121vendorsupport: iTCO vendor specific support mode, default=0 (none),
122	1=SuperMicro Pent3, 2=SuperMicro Pent4+, 911=Broken SMI BIOS
123-------------------------------------------------
124ib700wdt:
125timeout: Watchdog timeout in seconds. 0<= timeout <=30, default=30.
126nowayout: Watchdog cannot be stopped once started
127	(default=kernel config parameter)
128-------------------------------------------------
129ibmasr:
130nowayout: Watchdog cannot be stopped once started
131	(default=kernel config parameter)
132-------------------------------------------------
133imx2_wdt:
134timeout: Watchdog timeout in seconds (default 60 s)
135nowayout: Watchdog cannot be stopped once started
136	(default=kernel config parameter)
137-------------------------------------------------
138indydog:
139nowayout: Watchdog cannot be stopped once started
140	(default=kernel config parameter)
141-------------------------------------------------
142iop_wdt:
143nowayout: Watchdog cannot be stopped once started
144	(default=kernel config parameter)
145-------------------------------------------------
146it8712f_wdt:
147margin: Watchdog margin in seconds (default 60)
148nowayout: Disable watchdog shutdown on close
149	(default=kernel config parameter)
150-------------------------------------------------
151it87_wdt:
152nogameport: Forbid the activation of game port, default=0
153nocir: Forbid the use of CIR (workaround for some buggy setups); set to 1 if
154system resets despite watchdog daemon running, default=0
155exclusive: Watchdog exclusive device open, default=1
156timeout: Watchdog timeout in seconds, default=60
157testmode: Watchdog test mode (1 = no reboot), default=0
158nowayout: Watchdog cannot be stopped once started
159	(default=kernel config parameter)
160-------------------------------------------------
161ixp2000_wdt:
162heartbeat: Watchdog heartbeat in seconds (default 60s)
163nowayout: Watchdog cannot be stopped once started
164	(default=kernel config parameter)
165-------------------------------------------------
166ixp4xx_wdt:
167heartbeat: Watchdog heartbeat in seconds (default 60s)
168nowayout: Watchdog cannot be stopped once started
169	(default=kernel config parameter)
170-------------------------------------------------
171ks8695_wdt:
172wdt_time: Watchdog time in seconds. (default=5)
173nowayout: Watchdog cannot be stopped once started
174	(default=kernel config parameter)
175-------------------------------------------------
176machzwd:
177nowayout: Watchdog cannot be stopped once started
178	(default=kernel config parameter)
179action: after watchdog resets, generate:
180	0 = RESET(*)  1 = SMI  2 = NMI  3 = SCI
181-------------------------------------------------
182max63xx_wdt:
183heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 60
184nowayout: Watchdog cannot be stopped once started
185	(default=kernel config parameter)
186nodelay: Force selection of a timeout setting without initial delay
187	(max6373/74 only, default=0)
188-------------------------------------------------
189mixcomwd:
190nowayout: Watchdog cannot be stopped once started
191	(default=kernel config parameter)
192-------------------------------------------------
193mpc8xxx_wdt:
194timeout: Watchdog timeout in ticks. (0<timeout<65536, default=65535)
195reset: Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset
196nowayout: Watchdog cannot be stopped once started
197	(default=kernel config parameter)
198-------------------------------------------------
199mv64x60_wdt:
200nowayout: Watchdog cannot be stopped once started
201	(default=kernel config parameter)
202-------------------------------------------------
203ni903x_wdt:
204timeout: Initial watchdog timeout in seconds (0<timeout<516, default=60)
205nowayout: Watchdog cannot be stopped once started
206	(default=kernel config parameter)
207-------------------------------------------------
208nuc900_wdt:
209heartbeat: Watchdog heartbeats in seconds.
210	(default = 15)
211nowayout: Watchdog cannot be stopped once started
212	(default=kernel config parameter)
213-------------------------------------------------
214omap_wdt:
215timer_margin: initial watchdog timeout (in seconds)
216early_enable: Watchdog is started on module insertion (default=0
217nowayout: Watchdog cannot be stopped once started
218	(default=kernel config parameter)
219-------------------------------------------------
220orion_wdt:
221heartbeat: Initial watchdog heartbeat in seconds
222nowayout: Watchdog cannot be stopped once started
223	(default=kernel config parameter)
224-------------------------------------------------
225pc87413_wdt:
226io: pc87413 WDT I/O port (default: io).
227timeout: Watchdog timeout in minutes (default=timeout).
228nowayout: Watchdog cannot be stopped once started
229	(default=kernel config parameter)
230-------------------------------------------------
231pika_wdt:
232heartbeat: Watchdog heartbeats in seconds. (default = 15)
233nowayout: Watchdog cannot be stopped once started
234	(default=kernel config parameter)
235-------------------------------------------------
236pnx4008_wdt:
237heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 19
238nowayout: Set to 1 to keep watchdog running after device release
239-------------------------------------------------
240pnx833x_wdt:
241timeout: Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds)
242nowayout: Watchdog cannot be stopped once started
243	(default=kernel config parameter)
244start_enabled: Watchdog is started on module insertion (default=1)
245-------------------------------------------------
246rc32434_wdt:
247timeout: Watchdog timeout value, in seconds (default=20)
248nowayout: Watchdog cannot be stopped once started
249	(default=kernel config parameter)
250-------------------------------------------------
251riowd:
252riowd_timeout: Watchdog timeout in minutes (default=1)
253-------------------------------------------------
254s3c2410_wdt:
255tmr_margin: Watchdog tmr_margin in seconds. (default=15)
256tmr_atboot: Watchdog is started at boot time if set to 1, default=0
257nowayout: Watchdog cannot be stopped once started
258	(default=kernel config parameter)
259soft_noboot: Watchdog action, set to 1 to ignore reboots, 0 to reboot
260debug: Watchdog debug, set to >1 for debug, (default 0)
261-------------------------------------------------
262sa1100_wdt:
263margin: Watchdog margin in seconds (default 60s)
264-------------------------------------------------
265sb_wdog:
266timeout: Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)
267-------------------------------------------------
268sbc60xxwdt:
269wdt_stop: SBC60xx WDT 'stop' io port (default 0x45)
270wdt_start: SBC60xx WDT 'start' io port (default 0x443)
271timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
272nowayout: Watchdog cannot be stopped once started
273	(default=kernel config parameter)
274-------------------------------------------------
275sbc7240_wdt:
276timeout: Watchdog timeout in seconds. (1<=timeout<=255, default=30)
277nowayout: Disable watchdog when closing device file
278-------------------------------------------------
279sbc8360:
280timeout: Index into timeout table (0-63) (default=27 (60s))
281nowayout: Watchdog cannot be stopped once started
282	(default=kernel config parameter)
283-------------------------------------------------
284sbc_epx_c3:
285nowayout: Watchdog cannot be stopped once started
286	(default=kernel config parameter)
287-------------------------------------------------
288sbc_fitpc2_wdt:
289margin: Watchdog margin in seconds (default 60s)
290nowayout: Watchdog cannot be stopped once started
291-------------------------------------------------
292sbsa_gwdt:
293timeout: Watchdog timeout in seconds. (default 10s)
294action: Watchdog action at the first stage timeout,
295	set to 0 to ignore, 1 to panic. (default=0)
296nowayout: Watchdog cannot be stopped once started
297	(default=kernel config parameter)
298-------------------------------------------------
299sc1200wdt:
300isapnp: When set to 0 driver ISA PnP support will be disabled (default=1)
301io: io port
302timeout: range is 0-255 minutes, default is 1
303nowayout: Watchdog cannot be stopped once started
304	(default=kernel config parameter)
305-------------------------------------------------
306sc520_wdt:
307timeout: Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30)
308nowayout: Watchdog cannot be stopped once started
309	(default=kernel config parameter)
310-------------------------------------------------
311sch311x_wdt:
312force_id: Override the detected device ID
313therm_trip: Should a ThermTrip trigger the reset generator
314timeout: Watchdog timeout in seconds. 1<= timeout <=15300, default=60
315nowayout: Watchdog cannot be stopped once started
316	(default=kernel config parameter)
317-------------------------------------------------
318scx200_wdt:
319margin: Watchdog margin in seconds
320nowayout: Disable watchdog shutdown on close
321-------------------------------------------------
322shwdt:
323clock_division_ratio: Clock division ratio. Valid ranges are from 0x5 (1.31ms)
324	to 0x7 (5.25ms). (default=7)
325heartbeat: Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30
326nowayout: Watchdog cannot be stopped once started
327	(default=kernel config parameter)
328-------------------------------------------------
329smsc37b787_wdt:
330timeout: range is 1-255 units, default is 60
331nowayout: Watchdog cannot be stopped once started
332	(default=kernel config parameter)
333-------------------------------------------------
334softdog:
335soft_margin: Watchdog soft_margin in seconds.
336	(0 < soft_margin < 65536, default=60)
337nowayout: Watchdog cannot be stopped once started
338	(default=kernel config parameter)
339soft_noboot: Softdog action, set to 1 to ignore reboots, 0 to reboot
340	(default=0)
341-------------------------------------------------
342stmp3xxx_wdt:
343heartbeat: Watchdog heartbeat period in seconds from 1 to 4194304, default 19
344-------------------------------------------------
345tegra_wdt:
346heartbeat: Watchdog heartbeats in seconds. (default = 120)
347nowayout: Watchdog cannot be stopped once started
348	(default=kernel config parameter)
349-------------------------------------------------
350ts72xx_wdt:
351timeout: Watchdog timeout in seconds. (1 <= timeout <= 8, default=8)
352nowayout: Disable watchdog shutdown on close
353-------------------------------------------------
354twl4030_wdt:
355nowayout: Watchdog cannot be stopped once started
356	(default=kernel config parameter)
357-------------------------------------------------
358txx9wdt:
359timeout: Watchdog timeout in seconds. (0<timeout<N, default=60)
360nowayout: Watchdog cannot be stopped once started
361	(default=kernel config parameter)
362-------------------------------------------------
363w83627hf_wdt:
364wdt_io: w83627hf/thf WDT io port (default 0x2E)
365timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
366nowayout: Watchdog cannot be stopped once started
367	(default=kernel config parameter)
368-------------------------------------------------
369w83697hf_wdt:
370wdt_io: w83697hf/hg WDT io port (default 0x2e, 0 = autodetect)
371timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60)
372nowayout: Watchdog cannot be stopped once started
373	(default=kernel config parameter)
374early_disable: Watchdog gets disabled at boot time (default=1)
375-------------------------------------------------
376w83697ug_wdt:
377wdt_io: w83697ug/uf WDT io port (default 0x2e)
378timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60)
379nowayout: Watchdog cannot be stopped once started
380	(default=kernel config parameter)
381-------------------------------------------------
382w83877f_wdt:
383timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
384nowayout: Watchdog cannot be stopped once started
385	(default=kernel config parameter)
386-------------------------------------------------
387w83977f_wdt:
388timeout: Watchdog timeout in seconds (15..7635), default=45)
389testmode: Watchdog testmode (1 = no reboot), default=0
390nowayout: Watchdog cannot be stopped once started
391	(default=kernel config parameter)
392-------------------------------------------------
393wafer5823wdt:
394timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
395nowayout: Watchdog cannot be stopped once started
396	(default=kernel config parameter)
397-------------------------------------------------
398wdt285:
399soft_margin: Watchdog timeout in seconds (default=60)
400-------------------------------------------------
401wdt977:
402timeout: Watchdog timeout in seconds (60..15300, default=60)
403testmode: Watchdog testmode (1 = no reboot), default=0
404nowayout: Watchdog cannot be stopped once started
405	(default=kernel config parameter)
406-------------------------------------------------
407wm831x_wdt:
408nowayout: Watchdog cannot be stopped once started
409	(default=kernel config parameter)
410-------------------------------------------------
411wm8350_wdt:
412nowayout: Watchdog cannot be stopped once started
413	(default=kernel config parameter)
414-------------------------------------------------
415sun4v_wdt:
416timeout_ms: Watchdog timeout in milliseconds 1..180000, default=60000)
417nowayout: Watchdog cannot be stopped once started
418-------------------------------------------------