tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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-------------------------------------------------
203nuc900_wdt:
204heartbeat: Watchdog heartbeats in seconds.
205 (default = 15)
206nowayout: Watchdog cannot be stopped once started
207 (default=kernel config parameter)
208-------------------------------------------------
209omap_wdt:
210timer_margin: initial watchdog timeout (in seconds)
211early_enable: Watchdog is started on module insertion (default=0
212nowayout: Watchdog cannot be stopped once started
213 (default=kernel config parameter)
214-------------------------------------------------
215orion_wdt:
216heartbeat: Initial watchdog heartbeat in seconds
217nowayout: Watchdog cannot be stopped once started
218 (default=kernel config parameter)
219-------------------------------------------------
220pc87413_wdt:
221io: pc87413 WDT I/O port (default: io).
222timeout: Watchdog timeout in minutes (default=timeout).
223nowayout: Watchdog cannot be stopped once started
224 (default=kernel config parameter)
225-------------------------------------------------
226pika_wdt:
227heartbeat: Watchdog heartbeats in seconds. (default = 15)
228nowayout: Watchdog cannot be stopped once started
229 (default=kernel config parameter)
230-------------------------------------------------
231pnx4008_wdt:
232heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 19
233nowayout: Set to 1 to keep watchdog running after device release
234-------------------------------------------------
235pnx833x_wdt:
236timeout: Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds)
237nowayout: Watchdog cannot be stopped once started
238 (default=kernel config parameter)
239start_enabled: Watchdog is started on module insertion (default=1)
240-------------------------------------------------
241rc32434_wdt:
242timeout: Watchdog timeout value, in seconds (default=20)
243nowayout: Watchdog cannot be stopped once started
244 (default=kernel config parameter)
245-------------------------------------------------
246riowd:
247riowd_timeout: Watchdog timeout in minutes (default=1)
248-------------------------------------------------
249s3c2410_wdt:
250tmr_margin: Watchdog tmr_margin in seconds. (default=15)
251tmr_atboot: Watchdog is started at boot time if set to 1, default=0
252nowayout: Watchdog cannot be stopped once started
253 (default=kernel config parameter)
254soft_noboot: Watchdog action, set to 1 to ignore reboots, 0 to reboot
255debug: Watchdog debug, set to >1 for debug, (default 0)
256-------------------------------------------------
257sa1100_wdt:
258margin: Watchdog margin in seconds (default 60s)
259-------------------------------------------------
260sb_wdog:
261timeout: Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)
262-------------------------------------------------
263sbc60xxwdt:
264wdt_stop: SBC60xx WDT 'stop' io port (default 0x45)
265wdt_start: SBC60xx WDT 'start' io port (default 0x443)
266timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
267nowayout: Watchdog cannot be stopped once started
268 (default=kernel config parameter)
269-------------------------------------------------
270sbc7240_wdt:
271timeout: Watchdog timeout in seconds. (1<=timeout<=255, default=30)
272nowayout: Disable watchdog when closing device file
273-------------------------------------------------
274sbc8360:
275timeout: Index into timeout table (0-63) (default=27 (60s))
276nowayout: Watchdog cannot be stopped once started
277 (default=kernel config parameter)
278-------------------------------------------------
279sbc_epx_c3:
280nowayout: Watchdog cannot be stopped once started
281 (default=kernel config parameter)
282-------------------------------------------------
283sbc_fitpc2_wdt:
284margin: Watchdog margin in seconds (default 60s)
285nowayout: Watchdog cannot be stopped once started
286-------------------------------------------------
287sc1200wdt:
288isapnp: When set to 0 driver ISA PnP support will be disabled (default=1)
289io: io port
290timeout: range is 0-255 minutes, default is 1
291nowayout: Watchdog cannot be stopped once started
292 (default=kernel config parameter)
293-------------------------------------------------
294sc520_wdt:
295timeout: Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30)
296nowayout: Watchdog cannot be stopped once started
297 (default=kernel config parameter)
298-------------------------------------------------
299sch311x_wdt:
300force_id: Override the detected device ID
301therm_trip: Should a ThermTrip trigger the reset generator
302timeout: Watchdog timeout in seconds. 1<= timeout <=15300, default=60
303nowayout: Watchdog cannot be stopped once started
304 (default=kernel config parameter)
305-------------------------------------------------
306scx200_wdt:
307margin: Watchdog margin in seconds
308nowayout: Disable watchdog shutdown on close
309-------------------------------------------------
310shwdt:
311clock_division_ratio: Clock division ratio. Valid ranges are from 0x5 (1.31ms)
312 to 0x7 (5.25ms). (default=7)
313heartbeat: Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30
314nowayout: Watchdog cannot be stopped once started
315 (default=kernel config parameter)
316-------------------------------------------------
317smsc37b787_wdt:
318timeout: range is 1-255 units, default is 60
319nowayout: Watchdog cannot be stopped once started
320 (default=kernel config parameter)
321-------------------------------------------------
322softdog:
323soft_margin: Watchdog soft_margin in seconds.
324 (0 < soft_margin < 65536, default=60)
325nowayout: Watchdog cannot be stopped once started
326 (default=kernel config parameter)
327soft_noboot: Softdog action, set to 1 to ignore reboots, 0 to reboot
328 (default=0)
329-------------------------------------------------
330stmp3xxx_wdt:
331heartbeat: Watchdog heartbeat period in seconds from 1 to 4194304, default 19
332-------------------------------------------------
333tegra_wdt:
334heartbeat: Watchdog heartbeats in seconds. (default = 120)
335nowayout: Watchdog cannot be stopped once started
336 (default=kernel config parameter)
337-------------------------------------------------
338ts72xx_wdt:
339timeout: Watchdog timeout in seconds. (1 <= timeout <= 8, default=8)
340nowayout: Disable watchdog shutdown on close
341-------------------------------------------------
342twl4030_wdt:
343nowayout: Watchdog cannot be stopped once started
344 (default=kernel config parameter)
345-------------------------------------------------
346txx9wdt:
347timeout: Watchdog timeout in seconds. (0<timeout<N, default=60)
348nowayout: Watchdog cannot be stopped once started
349 (default=kernel config parameter)
350-------------------------------------------------
351w83627hf_wdt:
352wdt_io: w83627hf/thf WDT io port (default 0x2E)
353timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
354nowayout: Watchdog cannot be stopped once started
355 (default=kernel config parameter)
356-------------------------------------------------
357w83697hf_wdt:
358wdt_io: w83697hf/hg WDT io port (default 0x2e, 0 = autodetect)
359timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60)
360nowayout: Watchdog cannot be stopped once started
361 (default=kernel config parameter)
362early_disable: Watchdog gets disabled at boot time (default=1)
363-------------------------------------------------
364w83697ug_wdt:
365wdt_io: w83697ug/uf WDT io port (default 0x2e)
366timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60)
367nowayout: Watchdog cannot be stopped once started
368 (default=kernel config parameter)
369-------------------------------------------------
370w83877f_wdt:
371timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
372nowayout: Watchdog cannot be stopped once started
373 (default=kernel config parameter)
374-------------------------------------------------
375w83977f_wdt:
376timeout: Watchdog timeout in seconds (15..7635), default=45)
377testmode: Watchdog testmode (1 = no reboot), default=0
378nowayout: Watchdog cannot be stopped once started
379 (default=kernel config parameter)
380-------------------------------------------------
381wafer5823wdt:
382timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
383nowayout: Watchdog cannot be stopped once started
384 (default=kernel config parameter)
385-------------------------------------------------
386wdt285:
387soft_margin: Watchdog timeout in seconds (default=60)
388-------------------------------------------------
389wdt977:
390timeout: Watchdog timeout in seconds (60..15300, default=60)
391testmode: Watchdog testmode (1 = no reboot), default=0
392nowayout: Watchdog cannot be stopped once started
393 (default=kernel config parameter)
394-------------------------------------------------
395wm831x_wdt:
396nowayout: Watchdog cannot be stopped once started
397 (default=kernel config parameter)
398-------------------------------------------------
399wm8350_wdt:
400nowayout: Watchdog cannot be stopped once started
401 (default=kernel config parameter)
402-------------------------------------------------