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Documentation / watchdog / watchdog-parameters.txt




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Based on kernel version 4.13.3. Page generated on 2017-09-23 13:56 EST.

1	This file provides information on the module parameters of many of
2	the Linux watchdog drivers.  Watchdog driver parameter specs should
3	be listed here unless the driver has its own driver-specific information
4	file.
5	
6	
7	See Documentation/admin-guide/kernel-parameters.rst for information on
8	providing kernel parameters for builtin drivers versus loadable
9	modules.
10	
11	
12	-------------------------------------------------
13	acquirewdt:
14	wdt_stop: Acquire WDT 'stop' io port (default 0x43)
15	wdt_start: Acquire WDT 'start' io port (default 0x443)
16	nowayout: Watchdog cannot be stopped once started
17		(default=kernel config parameter)
18	-------------------------------------------------
19	advantechwdt:
20	wdt_stop: Advantech WDT 'stop' io port (default 0x443)
21	wdt_start: Advantech WDT 'start' io port (default 0x443)
22	timeout: Watchdog timeout in seconds. 1<= timeout <=63, default=60.
23	nowayout: Watchdog cannot be stopped once started
24		(default=kernel config parameter)
25	-------------------------------------------------
26	alim1535_wdt:
27	timeout: Watchdog timeout in seconds. (0 < timeout < 18000, default=60
28	nowayout: Watchdog cannot be stopped once started
29		(default=kernel config parameter)
30	-------------------------------------------------
31	alim7101_wdt:
32	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30
33	use_gpio: Use the gpio watchdog (required by old cobalt boards).
34		default=0/off/no
35	nowayout: Watchdog cannot be stopped once started
36		(default=kernel config parameter)
37	-------------------------------------------------
38	ar7_wdt:
39	margin: Watchdog margin in seconds (default=60)
40	nowayout: Disable watchdog shutdown on close
41		(default=kernel config parameter)
42	-------------------------------------------------
43	at32ap700x_wdt:
44	timeout: Timeout value. Limited to be 1 or 2 seconds. (default=2)
45	nowayout: Watchdog cannot be stopped once started
46		(default=kernel config parameter)
47	-------------------------------------------------
48	at91rm9200_wdt:
49	wdt_time: Watchdog time in seconds. (default=5)
50	nowayout: Watchdog cannot be stopped once started
51		(default=kernel config parameter)
52	-------------------------------------------------
53	at91sam9_wdt:
54	heartbeat: Watchdog heartbeats in seconds. (default = 15)
55	nowayout: Watchdog cannot be stopped once started
56		(default=kernel config parameter)
57	-------------------------------------------------
58	bcm47xx_wdt:
59	wdt_time: Watchdog time in seconds. (default=30)
60	nowayout: Watchdog cannot be stopped once started
61		(default=kernel config parameter)
62	-------------------------------------------------
63	bfin_wdt:
64	timeout: Watchdog timeout in seconds. (1<=timeout<=((2^32)/SCLK), default=20)
65	nowayout: Watchdog cannot be stopped once started
66		(default=kernel config parameter)
67	-------------------------------------------------
68	coh901327_wdt:
69	margin: Watchdog margin in seconds (default 60s)
70	-------------------------------------------------
71	cpu5wdt:
72	port: base address of watchdog card, default is 0x91
73	verbose: be verbose, default is 0 (no)
74	ticks: count down ticks, default is 10000
75	-------------------------------------------------
76	cpwd:
77	wd0_timeout: Default watchdog0 timeout in 1/10secs
78	wd1_timeout: Default watchdog1 timeout in 1/10secs
79	wd2_timeout: Default watchdog2 timeout in 1/10secs
80	-------------------------------------------------
81	da9052wdt:
82	timeout: Watchdog timeout in seconds. 2<= timeout <=131, default=2.048s
83	nowayout: Watchdog cannot be stopped once started
84		(default=kernel config parameter)
85	-------------------------------------------------
86	davinci_wdt:
87	heartbeat: Watchdog heartbeat period in seconds from 1 to 600, default 60
88	-------------------------------------------------
89	ebc-c384_wdt:
90	timeout: Watchdog timeout in seconds. (1<=timeout<=15300, default=60)
91	nowayout: Watchdog cannot be stopped once started
92	-------------------------------------------------
93	ep93xx_wdt:
94	nowayout: Watchdog cannot be stopped once started
95	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD)
96	-------------------------------------------------
97	eurotechwdt:
98	nowayout: Watchdog cannot be stopped once started
99		(default=kernel config parameter)
100	io: Eurotech WDT io port (default=0x3f0)
101	irq: Eurotech WDT irq (default=10)
102	ev: Eurotech WDT event type (default is `int')
103	-------------------------------------------------
104	gef_wdt:
105	nowayout: Watchdog cannot be stopped once started
106		(default=kernel config parameter)
107	-------------------------------------------------
108	geodewdt:
109	timeout: Watchdog timeout in seconds. 1<= timeout <=131, default=60.
110	nowayout: Watchdog cannot be stopped once started
111		(default=kernel config parameter)
112	-------------------------------------------------
113	i6300esb:
114	heartbeat: Watchdog heartbeat in seconds. (1<heartbeat<2046, default=30)
115	nowayout: Watchdog cannot be stopped once started
116		(default=kernel config parameter)
117	-------------------------------------------------
118	iTCO_wdt:
119	heartbeat: Watchdog heartbeat in seconds.
120		(5<=heartbeat<=74 (TCO v1) or 1226 (TCO v2), default=30)
121	nowayout: Watchdog cannot be stopped once started
122		(default=kernel config parameter)
123	-------------------------------------------------
124	iTCO_vendor_support:
125	vendorsupport: iTCO vendor specific support mode, default=0 (none),
126		1=SuperMicro Pent3, 2=SuperMicro Pent4+, 911=Broken SMI BIOS
127	-------------------------------------------------
128	ib700wdt:
129	timeout: Watchdog timeout in seconds. 0<= timeout <=30, default=30.
130	nowayout: Watchdog cannot be stopped once started
131		(default=kernel config parameter)
132	-------------------------------------------------
133	ibmasr:
134	nowayout: Watchdog cannot be stopped once started
135		(default=kernel config parameter)
136	-------------------------------------------------
137	imx2_wdt:
138	timeout: Watchdog timeout in seconds (default 60 s)
139	nowayout: Watchdog cannot be stopped once started
140		(default=kernel config parameter)
141	-------------------------------------------------
142	indydog:
143	nowayout: Watchdog cannot be stopped once started
144		(default=kernel config parameter)
145	-------------------------------------------------
146	iop_wdt:
147	nowayout: Watchdog cannot be stopped once started
148		(default=kernel config parameter)
149	-------------------------------------------------
150	it8712f_wdt:
151	margin: Watchdog margin in seconds (default 60)
152	nowayout: Disable watchdog shutdown on close
153		(default=kernel config parameter)
154	-------------------------------------------------
155	it87_wdt:
156	nogameport: Forbid the activation of game port, default=0
157	nocir: Forbid the use of CIR (workaround for some buggy setups); set to 1 if
158	system resets despite watchdog daemon running, default=0
159	exclusive: Watchdog exclusive device open, default=1
160	timeout: Watchdog timeout in seconds, default=60
161	testmode: Watchdog test mode (1 = no reboot), default=0
162	nowayout: Watchdog cannot be stopped once started
163		(default=kernel config parameter)
164	-------------------------------------------------
165	ixp2000_wdt:
166	heartbeat: Watchdog heartbeat in seconds (default 60s)
167	nowayout: Watchdog cannot be stopped once started
168		(default=kernel config parameter)
169	-------------------------------------------------
170	ixp4xx_wdt:
171	heartbeat: Watchdog heartbeat in seconds (default 60s)
172	nowayout: Watchdog cannot be stopped once started
173		(default=kernel config parameter)
174	-------------------------------------------------
175	ks8695_wdt:
176	wdt_time: Watchdog time in seconds. (default=5)
177	nowayout: Watchdog cannot be stopped once started
178		(default=kernel config parameter)
179	-------------------------------------------------
180	machzwd:
181	nowayout: Watchdog cannot be stopped once started
182		(default=kernel config parameter)
183	action: after watchdog resets, generate:
184		0 = RESET(*)  1 = SMI  2 = NMI  3 = SCI
185	-------------------------------------------------
186	max63xx_wdt:
187	heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 60
188	nowayout: Watchdog cannot be stopped once started
189		(default=kernel config parameter)
190	nodelay: Force selection of a timeout setting without initial delay
191		(max6373/74 only, default=0)
192	-------------------------------------------------
193	mixcomwd:
194	nowayout: Watchdog cannot be stopped once started
195		(default=kernel config parameter)
196	-------------------------------------------------
197	mpc8xxx_wdt:
198	timeout: Watchdog timeout in ticks. (0<timeout<65536, default=65535)
199	reset: Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset
200	nowayout: Watchdog cannot be stopped once started
201		(default=kernel config parameter)
202	-------------------------------------------------
203	mv64x60_wdt:
204	nowayout: Watchdog cannot be stopped once started
205		(default=kernel config parameter)
206	-------------------------------------------------
207	ni903x_wdt:
208	timeout: Initial watchdog timeout in seconds (0<timeout<516, default=60)
209	nowayout: Watchdog cannot be stopped once started
210		(default=kernel config parameter)
211	-------------------------------------------------
212	nic7018_wdt:
213	timeout: Initial watchdog timeout in seconds (0<timeout<464, default=80)
214	nowayout: Watchdog cannot be stopped once started
215		(default=kernel config parameter)
216	-------------------------------------------------
217	nuc900_wdt:
218	heartbeat: Watchdog heartbeats in seconds.
219		(default = 15)
220	nowayout: Watchdog cannot be stopped once started
221		(default=kernel config parameter)
222	-------------------------------------------------
223	omap_wdt:
224	timer_margin: initial watchdog timeout (in seconds)
225	early_enable: Watchdog is started on module insertion (default=0
226	nowayout: Watchdog cannot be stopped once started
227		(default=kernel config parameter)
228	-------------------------------------------------
229	orion_wdt:
230	heartbeat: Initial watchdog heartbeat in seconds
231	nowayout: Watchdog cannot be stopped once started
232		(default=kernel config parameter)
233	-------------------------------------------------
234	pc87413_wdt:
235	io: pc87413 WDT I/O port (default: io).
236	timeout: Watchdog timeout in minutes (default=timeout).
237	nowayout: Watchdog cannot be stopped once started
238		(default=kernel config parameter)
239	-------------------------------------------------
240	pika_wdt:
241	heartbeat: Watchdog heartbeats in seconds. (default = 15)
242	nowayout: Watchdog cannot be stopped once started
243		(default=kernel config parameter)
244	-------------------------------------------------
245	pnx4008_wdt:
246	heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 19
247	nowayout: Set to 1 to keep watchdog running after device release
248	-------------------------------------------------
249	pnx833x_wdt:
250	timeout: Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds)
251	nowayout: Watchdog cannot be stopped once started
252		(default=kernel config parameter)
253	start_enabled: Watchdog is started on module insertion (default=1)
254	-------------------------------------------------
255	rc32434_wdt:
256	timeout: Watchdog timeout value, in seconds (default=20)
257	nowayout: Watchdog cannot be stopped once started
258		(default=kernel config parameter)
259	-------------------------------------------------
260	riowd:
261	riowd_timeout: Watchdog timeout in minutes (default=1)
262	-------------------------------------------------
263	s3c2410_wdt:
264	tmr_margin: Watchdog tmr_margin in seconds. (default=15)
265	tmr_atboot: Watchdog is started at boot time if set to 1, default=0
266	nowayout: Watchdog cannot be stopped once started
267		(default=kernel config parameter)
268	soft_noboot: Watchdog action, set to 1 to ignore reboots, 0 to reboot
269	debug: Watchdog debug, set to >1 for debug, (default 0)
270	-------------------------------------------------
271	sa1100_wdt:
272	margin: Watchdog margin in seconds (default 60s)
273	-------------------------------------------------
274	sb_wdog:
275	timeout: Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)
276	-------------------------------------------------
277	sbc60xxwdt:
278	wdt_stop: SBC60xx WDT 'stop' io port (default 0x45)
279	wdt_start: SBC60xx WDT 'start' io port (default 0x443)
280	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
281	nowayout: Watchdog cannot be stopped once started
282		(default=kernel config parameter)
283	-------------------------------------------------
284	sbc7240_wdt:
285	timeout: Watchdog timeout in seconds. (1<=timeout<=255, default=30)
286	nowayout: Disable watchdog when closing device file
287	-------------------------------------------------
288	sbc8360:
289	timeout: Index into timeout table (0-63) (default=27 (60s))
290	nowayout: Watchdog cannot be stopped once started
291		(default=kernel config parameter)
292	-------------------------------------------------
293	sbc_epx_c3:
294	nowayout: Watchdog cannot be stopped once started
295		(default=kernel config parameter)
296	-------------------------------------------------
297	sbc_fitpc2_wdt:
298	margin: Watchdog margin in seconds (default 60s)
299	nowayout: Watchdog cannot be stopped once started
300	-------------------------------------------------
301	sbsa_gwdt:
302	timeout: Watchdog timeout in seconds. (default 10s)
303	action: Watchdog action at the first stage timeout,
304		set to 0 to ignore, 1 to panic. (default=0)
305	nowayout: Watchdog cannot be stopped once started
306		(default=kernel config parameter)
307	-------------------------------------------------
308	sc1200wdt:
309	isapnp: When set to 0 driver ISA PnP support will be disabled (default=1)
310	io: io port
311	timeout: range is 0-255 minutes, default is 1
312	nowayout: Watchdog cannot be stopped once started
313		(default=kernel config parameter)
314	-------------------------------------------------
315	sc520_wdt:
316	timeout: Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30)
317	nowayout: Watchdog cannot be stopped once started
318		(default=kernel config parameter)
319	-------------------------------------------------
320	sch311x_wdt:
321	force_id: Override the detected device ID
322	therm_trip: Should a ThermTrip trigger the reset generator
323	timeout: Watchdog timeout in seconds. 1<= timeout <=15300, default=60
324	nowayout: Watchdog cannot be stopped once started
325		(default=kernel config parameter)
326	-------------------------------------------------
327	scx200_wdt:
328	margin: Watchdog margin in seconds
329	nowayout: Disable watchdog shutdown on close
330	-------------------------------------------------
331	shwdt:
332	clock_division_ratio: Clock division ratio. Valid ranges are from 0x5 (1.31ms)
333		to 0x7 (5.25ms). (default=7)
334	heartbeat: Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30
335	nowayout: Watchdog cannot be stopped once started
336		(default=kernel config parameter)
337	-------------------------------------------------
338	smsc37b787_wdt:
339	timeout: range is 1-255 units, default is 60
340	nowayout: Watchdog cannot be stopped once started
341		(default=kernel config parameter)
342	-------------------------------------------------
343	softdog:
344	soft_margin: Watchdog soft_margin in seconds.
345		(0 < soft_margin < 65536, default=60)
346	nowayout: Watchdog cannot be stopped once started
347		(default=kernel config parameter)
348	soft_noboot: Softdog action, set to 1 to ignore reboots, 0 to reboot
349		(default=0)
350	-------------------------------------------------
351	stmp3xxx_wdt:
352	heartbeat: Watchdog heartbeat period in seconds from 1 to 4194304, default 19
353	-------------------------------------------------
354	tegra_wdt:
355	heartbeat: Watchdog heartbeats in seconds. (default = 120)
356	nowayout: Watchdog cannot be stopped once started
357		(default=kernel config parameter)
358	-------------------------------------------------
359	ts72xx_wdt:
360	timeout: Watchdog timeout in seconds. (1 <= timeout <= 8, default=8)
361	nowayout: Disable watchdog shutdown on close
362	-------------------------------------------------
363	twl4030_wdt:
364	nowayout: Watchdog cannot be stopped once started
365		(default=kernel config parameter)
366	-------------------------------------------------
367	txx9wdt:
368	timeout: Watchdog timeout in seconds. (0<timeout<N, default=60)
369	nowayout: Watchdog cannot be stopped once started
370		(default=kernel config parameter)
371	-------------------------------------------------
372	uniphier_wdt:
373	timeout: Watchdog timeout in power of two seconds.
374		(1 <= timeout <= 128, default=64)
375	nowayout: Watchdog cannot be stopped once started
376		(default=kernel config parameter)
377	-------------------------------------------------
378	w83627hf_wdt:
379	wdt_io: w83627hf/thf WDT io port (default 0x2E)
380	timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
381	nowayout: Watchdog cannot be stopped once started
382		(default=kernel config parameter)
383	-------------------------------------------------
384	w83697hf_wdt:
385	wdt_io: w83697hf/hg WDT io port (default 0x2e, 0 = autodetect)
386	timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60)
387	nowayout: Watchdog cannot be stopped once started
388		(default=kernel config parameter)
389	early_disable: Watchdog gets disabled at boot time (default=1)
390	-------------------------------------------------
391	w83697ug_wdt:
392	wdt_io: w83697ug/uf WDT io port (default 0x2e)
393	timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60)
394	nowayout: Watchdog cannot be stopped once started
395		(default=kernel config parameter)
396	-------------------------------------------------
397	w83877f_wdt:
398	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
399	nowayout: Watchdog cannot be stopped once started
400		(default=kernel config parameter)
401	-------------------------------------------------
402	w83977f_wdt:
403	timeout: Watchdog timeout in seconds (15..7635), default=45)
404	testmode: Watchdog testmode (1 = no reboot), default=0
405	nowayout: Watchdog cannot be stopped once started
406		(default=kernel config parameter)
407	-------------------------------------------------
408	wafer5823wdt:
409	timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
410	nowayout: Watchdog cannot be stopped once started
411		(default=kernel config parameter)
412	-------------------------------------------------
413	wdt285:
414	soft_margin: Watchdog timeout in seconds (default=60)
415	-------------------------------------------------
416	wdt977:
417	timeout: Watchdog timeout in seconds (60..15300, default=60)
418	testmode: Watchdog testmode (1 = no reboot), default=0
419	nowayout: Watchdog cannot be stopped once started
420		(default=kernel config parameter)
421	-------------------------------------------------
422	wm831x_wdt:
423	nowayout: Watchdog cannot be stopped once started
424		(default=kernel config parameter)
425	-------------------------------------------------
426	wm8350_wdt:
427	nowayout: Watchdog cannot be stopped once started
428		(default=kernel config parameter)
429	-------------------------------------------------
430	sun4v_wdt:
431	timeout_ms: Watchdog timeout in milliseconds 1..180000, default=60000)
432	nowayout: Watchdog cannot be stopped once started
433	-------------------------------------------------
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