About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / watchdog / watchdog-parameters.txt


Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 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	at91rm9200_wdt:
44	wdt_time: Watchdog time in seconds. (default=5)
45	nowayout: Watchdog cannot be stopped once started
46		(default=kernel config parameter)
47	-------------------------------------------------
48	at91sam9_wdt:
49	heartbeat: Watchdog heartbeats in seconds. (default = 15)
50	nowayout: Watchdog cannot be stopped once started
51		(default=kernel config parameter)
52	-------------------------------------------------
53	bcm47xx_wdt:
54	wdt_time: Watchdog time in seconds. (default=30)
55	nowayout: Watchdog cannot be stopped once started
56		(default=kernel config parameter)
57	-------------------------------------------------
58	bfin_wdt:
59	timeout: Watchdog timeout in seconds. (1<=timeout<=((2^32)/SCLK), default=20)
60	nowayout: Watchdog cannot be stopped once started
61		(default=kernel config parameter)
62	-------------------------------------------------
63	coh901327_wdt:
64	margin: Watchdog margin in seconds (default 60s)
65	-------------------------------------------------
66	cpu5wdt:
67	port: base address of watchdog card, default is 0x91
68	verbose: be verbose, default is 0 (no)
69	ticks: count down ticks, default is 10000
70	-------------------------------------------------
71	cpwd:
72	wd0_timeout: Default watchdog0 timeout in 1/10secs
73	wd1_timeout: Default watchdog1 timeout in 1/10secs
74	wd2_timeout: Default watchdog2 timeout in 1/10secs
75	-------------------------------------------------
76	da9052wdt:
77	timeout: Watchdog timeout in seconds. 2<= timeout <=131, default=2.048s
78	nowayout: Watchdog cannot be stopped once started
79		(default=kernel config parameter)
80	-------------------------------------------------
81	davinci_wdt:
82	heartbeat: Watchdog heartbeat period in seconds from 1 to 600, default 60
83	-------------------------------------------------
84	ebc-c384_wdt:
85	timeout: Watchdog timeout in seconds. (1<=timeout<=15300, default=60)
86	nowayout: Watchdog cannot be stopped once started
87	-------------------------------------------------
88	ep93xx_wdt:
89	nowayout: Watchdog cannot be stopped once started
90	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD)
91	-------------------------------------------------
92	eurotechwdt:
93	nowayout: Watchdog cannot be stopped once started
94		(default=kernel config parameter)
95	io: Eurotech WDT io port (default=0x3f0)
96	irq: Eurotech WDT irq (default=10)
97	ev: Eurotech WDT event type (default is `int')
98	-------------------------------------------------
99	gef_wdt:
100	nowayout: Watchdog cannot be stopped once started
101		(default=kernel config parameter)
102	-------------------------------------------------
103	geodewdt:
104	timeout: Watchdog timeout in seconds. 1<= timeout <=131, default=60.
105	nowayout: Watchdog cannot be stopped once started
106		(default=kernel config parameter)
107	-------------------------------------------------
108	i6300esb:
109	heartbeat: Watchdog heartbeat in seconds. (1<heartbeat<2046, default=30)
110	nowayout: Watchdog cannot be stopped once started
111		(default=kernel config parameter)
112	-------------------------------------------------
113	iTCO_wdt:
114	heartbeat: Watchdog heartbeat in seconds.
115		(2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=30)
116	nowayout: Watchdog cannot be stopped once started
117		(default=kernel config parameter)
118	-------------------------------------------------
119	iTCO_vendor_support:
120	vendorsupport: iTCO vendor specific support mode, default=0 (none),
121		1=SuperMicro Pent3, 2=SuperMicro Pent4+, 911=Broken SMI BIOS
122	-------------------------------------------------
123	ib700wdt:
124	timeout: Watchdog timeout in seconds. 0<= timeout <=30, default=30.
125	nowayout: Watchdog cannot be stopped once started
126		(default=kernel config parameter)
127	-------------------------------------------------
128	ibmasr:
129	nowayout: Watchdog cannot be stopped once started
130		(default=kernel config parameter)
131	-------------------------------------------------
132	imx2_wdt:
133	timeout: Watchdog timeout in seconds (default 60 s)
134	nowayout: Watchdog cannot be stopped once started
135		(default=kernel config parameter)
136	-------------------------------------------------
137	indydog:
138	nowayout: Watchdog cannot be stopped once started
139		(default=kernel config parameter)
140	-------------------------------------------------
141	iop_wdt:
142	nowayout: Watchdog cannot be stopped once started
143		(default=kernel config parameter)
144	-------------------------------------------------
145	it8712f_wdt:
146	margin: Watchdog margin in seconds (default 60)
147	nowayout: Disable watchdog shutdown on close
148		(default=kernel config parameter)
149	-------------------------------------------------
150	it87_wdt:
151	nogameport: Forbid the activation of game port, default=0
152	nocir: Forbid the use of CIR (workaround for some buggy setups); set to 1 if
153	system resets despite watchdog daemon running, default=0
154	exclusive: Watchdog exclusive device open, default=1
155	timeout: Watchdog timeout in seconds, default=60
156	testmode: Watchdog test mode (1 = no reboot), default=0
157	nowayout: Watchdog cannot be stopped once started
158		(default=kernel config parameter)
159	-------------------------------------------------
160	ixp4xx_wdt:
161	heartbeat: Watchdog heartbeat in seconds (default 60s)
162	nowayout: Watchdog cannot be stopped once started
163		(default=kernel config parameter)
164	-------------------------------------------------
165	ks8695_wdt:
166	wdt_time: Watchdog time in seconds. (default=5)
167	nowayout: Watchdog cannot be stopped once started
168		(default=kernel config parameter)
169	-------------------------------------------------
170	machzwd:
171	nowayout: Watchdog cannot be stopped once started
172		(default=kernel config parameter)
173	action: after watchdog resets, generate:
174		0 = RESET(*)  1 = SMI  2 = NMI  3 = SCI
175	-------------------------------------------------
176	max63xx_wdt:
177	heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 60
178	nowayout: Watchdog cannot be stopped once started
179		(default=kernel config parameter)
180	nodelay: Force selection of a timeout setting without initial delay
181		(max6373/74 only, default=0)
182	-------------------------------------------------
183	mixcomwd:
184	nowayout: Watchdog cannot be stopped once started
185		(default=kernel config parameter)
186	-------------------------------------------------
187	mpc8xxx_wdt:
188	timeout: Watchdog timeout in ticks. (0<timeout<65536, default=65535)
189	reset: Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset
190	nowayout: Watchdog cannot be stopped once started
191		(default=kernel config parameter)
192	-------------------------------------------------
193	mv64x60_wdt:
194	nowayout: Watchdog cannot be stopped once started
195		(default=kernel config parameter)
196	-------------------------------------------------
197	ni903x_wdt:
198	timeout: Initial watchdog timeout in seconds (0<timeout<516, default=60)
199	nowayout: Watchdog cannot be stopped once started
200		(default=kernel config parameter)
201	-------------------------------------------------
202	nic7018_wdt:
203	timeout: Initial watchdog timeout in seconds (0<timeout<464, default=80)
204	nowayout: Watchdog cannot be stopped once started
205		(default=kernel config parameter)
206	-------------------------------------------------
207	nuc900_wdt:
208	heartbeat: Watchdog heartbeats in seconds.
209		(default = 15)
210	nowayout: Watchdog cannot be stopped once started
211		(default=kernel config parameter)
212	-------------------------------------------------
213	omap_wdt:
214	timer_margin: initial watchdog timeout (in seconds)
215	early_enable: Watchdog is started on module insertion (default=0
216	nowayout: Watchdog cannot be stopped once started
217		(default=kernel config parameter)
218	-------------------------------------------------
219	orion_wdt:
220	heartbeat: Initial watchdog heartbeat in seconds
221	nowayout: Watchdog cannot be stopped once started
222		(default=kernel config parameter)
223	-------------------------------------------------
224	pc87413_wdt:
225	io: pc87413 WDT I/O port (default: io).
226	timeout: Watchdog timeout in minutes (default=timeout).
227	nowayout: Watchdog cannot be stopped once started
228		(default=kernel config parameter)
229	-------------------------------------------------
230	pika_wdt:
231	heartbeat: Watchdog heartbeats in seconds. (default = 15)
232	nowayout: Watchdog cannot be stopped once started
233		(default=kernel config parameter)
234	-------------------------------------------------
235	pnx4008_wdt:
236	heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 19
237	nowayout: Set to 1 to keep watchdog running after device release
238	-------------------------------------------------
239	pnx833x_wdt:
240	timeout: Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds)
241	nowayout: Watchdog cannot be stopped once started
242		(default=kernel config parameter)
243	start_enabled: Watchdog is started on module insertion (default=1)
244	-------------------------------------------------
245	rc32434_wdt:
246	timeout: Watchdog timeout value, in seconds (default=20)
247	nowayout: Watchdog cannot be stopped once started
248		(default=kernel config parameter)
249	-------------------------------------------------
250	riowd:
251	riowd_timeout: Watchdog timeout in minutes (default=1)
252	-------------------------------------------------
253	s3c2410_wdt:
254	tmr_margin: Watchdog tmr_margin in seconds. (default=15)
255	tmr_atboot: Watchdog is started at boot time if set to 1, default=0
256	nowayout: Watchdog cannot be stopped once started
257		(default=kernel config parameter)
258	soft_noboot: Watchdog action, set to 1 to ignore reboots, 0 to reboot
259	debug: Watchdog debug, set to >1 for debug, (default 0)
260	-------------------------------------------------
261	sa1100_wdt:
262	margin: Watchdog margin in seconds (default 60s)
263	-------------------------------------------------
264	sb_wdog:
265	timeout: Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)
266	-------------------------------------------------
267	sbc60xxwdt:
268	wdt_stop: SBC60xx WDT 'stop' io port (default 0x45)
269	wdt_start: SBC60xx WDT 'start' io port (default 0x443)
270	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
271	nowayout: Watchdog cannot be stopped once started
272		(default=kernel config parameter)
273	-------------------------------------------------
274	sbc7240_wdt:
275	timeout: Watchdog timeout in seconds. (1<=timeout<=255, default=30)
276	nowayout: Disable watchdog when closing device file
277	-------------------------------------------------
278	sbc8360:
279	timeout: Index into timeout table (0-63) (default=27 (60s))
280	nowayout: Watchdog cannot be stopped once started
281		(default=kernel config parameter)
282	-------------------------------------------------
283	sbc_epx_c3:
284	nowayout: Watchdog cannot be stopped once started
285		(default=kernel config parameter)
286	-------------------------------------------------
287	sbc_fitpc2_wdt:
288	margin: Watchdog margin in seconds (default 60s)
289	nowayout: Watchdog cannot be stopped once started
290	-------------------------------------------------
291	sbsa_gwdt:
292	timeout: Watchdog timeout in seconds. (default 10s)
293	action: Watchdog action at the first stage timeout,
294		set to 0 to ignore, 1 to panic. (default=0)
295	nowayout: Watchdog cannot be stopped once started
296		(default=kernel config parameter)
297	-------------------------------------------------
298	sc1200wdt:
299	isapnp: When set to 0 driver ISA PnP support will be disabled (default=1)
300	io: io port
301	timeout: range is 0-255 minutes, default is 1
302	nowayout: Watchdog cannot be stopped once started
303		(default=kernel config parameter)
304	-------------------------------------------------
305	sc520_wdt:
306	timeout: Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30)
307	nowayout: Watchdog cannot be stopped once started
308		(default=kernel config parameter)
309	-------------------------------------------------
310	sch311x_wdt:
311	force_id: Override the detected device ID
312	therm_trip: Should a ThermTrip trigger the reset generator
313	timeout: Watchdog timeout in seconds. 1<= timeout <=15300, default=60
314	nowayout: Watchdog cannot be stopped once started
315		(default=kernel config parameter)
316	-------------------------------------------------
317	scx200_wdt:
318	margin: Watchdog margin in seconds
319	nowayout: Disable watchdog shutdown on close
320	-------------------------------------------------
321	shwdt:
322	clock_division_ratio: Clock division ratio. Valid ranges are from 0x5 (1.31ms)
323		to 0x7 (5.25ms). (default=7)
324	heartbeat: Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30
325	nowayout: Watchdog cannot be stopped once started
326		(default=kernel config parameter)
327	-------------------------------------------------
328	smsc37b787_wdt:
329	timeout: range is 1-255 units, default is 60
330	nowayout: Watchdog cannot be stopped once started
331		(default=kernel config parameter)
332	-------------------------------------------------
333	softdog:
334	soft_margin: Watchdog soft_margin in seconds.
335		(0 < soft_margin < 65536, default=60)
336	nowayout: Watchdog cannot be stopped once started
337		(default=kernel config parameter)
338	soft_noboot: Softdog action, set to 1 to ignore reboots, 0 to reboot
339		(default=0)
340	-------------------------------------------------
341	stmp3xxx_wdt:
342	heartbeat: Watchdog heartbeat period in seconds from 1 to 4194304, default 19
343	-------------------------------------------------
344	tegra_wdt:
345	heartbeat: Watchdog heartbeats in seconds. (default = 120)
346	nowayout: Watchdog cannot be stopped once started
347		(default=kernel config parameter)
348	-------------------------------------------------
349	ts72xx_wdt:
350	timeout: Watchdog timeout in seconds. (1 <= timeout <= 8, default=8)
351	nowayout: Disable watchdog shutdown on close
352	-------------------------------------------------
353	twl4030_wdt:
354	nowayout: Watchdog cannot be stopped once started
355		(default=kernel config parameter)
356	-------------------------------------------------
357	txx9wdt:
358	timeout: Watchdog timeout in seconds. (0<timeout<N, default=60)
359	nowayout: Watchdog cannot be stopped once started
360		(default=kernel config parameter)
361	-------------------------------------------------
362	uniphier_wdt:
363	timeout: Watchdog timeout in power of two seconds.
364		(1 <= timeout <= 128, default=64)
365	nowayout: Watchdog cannot be stopped once started
366		(default=kernel config parameter)
367	-------------------------------------------------
368	w83627hf_wdt:
369	wdt_io: w83627hf/thf WDT io port (default 0x2E)
370	timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
371	nowayout: Watchdog cannot be stopped once started
372		(default=kernel config parameter)
373	-------------------------------------------------
374	w83877f_wdt:
375	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
376	nowayout: Watchdog cannot be stopped once started
377		(default=kernel config parameter)
378	-------------------------------------------------
379	w83977f_wdt:
380	timeout: Watchdog timeout in seconds (15..7635), default=45)
381	testmode: Watchdog testmode (1 = no reboot), default=0
382	nowayout: Watchdog cannot be stopped once started
383		(default=kernel config parameter)
384	-------------------------------------------------
385	wafer5823wdt:
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	-------------------------------------------------
390	wdt285:
391	soft_margin: Watchdog timeout in seconds (default=60)
392	-------------------------------------------------
393	wdt977:
394	timeout: Watchdog timeout in seconds (60..15300, default=60)
395	testmode: Watchdog testmode (1 = no reboot), default=0
396	nowayout: Watchdog cannot be stopped once started
397		(default=kernel config parameter)
398	-------------------------------------------------
399	wm831x_wdt:
400	nowayout: Watchdog cannot be stopped once started
401		(default=kernel config parameter)
402	-------------------------------------------------
403	wm8350_wdt:
404	nowayout: Watchdog cannot be stopped once started
405		(default=kernel config parameter)
406	-------------------------------------------------
407	sun4v_wdt:
408	timeout_ms: Watchdog timeout in milliseconds 1..180000, default=60000)
409	nowayout: Watchdog cannot be stopped once started
410	-------------------------------------------------
Hide Line Numbers


About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog