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Documentation / watchdog / watchdog-parameters.txt




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Based on kernel version 4.3. Page generated on 2015-11-02 12:51 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/kernel-parameters.txt 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	ep93xx_wdt:
90	nowayout: Watchdog cannot be stopped once started
91	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD)
92	-------------------------------------------------
93	eurotechwdt:
94	nowayout: Watchdog cannot be stopped once started
95		(default=kernel config parameter)
96	io: Eurotech WDT io port (default=0x3f0)
97	irq: Eurotech WDT irq (default=10)
98	ev: Eurotech WDT event type (default is `int')
99	-------------------------------------------------
100	gef_wdt:
101	nowayout: Watchdog cannot be stopped once started
102		(default=kernel config parameter)
103	-------------------------------------------------
104	geodewdt:
105	timeout: Watchdog timeout in seconds. 1<= timeout <=131, default=60.
106	nowayout: Watchdog cannot be stopped once started
107		(default=kernel config parameter)
108	-------------------------------------------------
109	i6300esb:
110	heartbeat: Watchdog heartbeat in seconds. (1<heartbeat<2046, default=30)
111	nowayout: Watchdog cannot be stopped once started
112		(default=kernel config parameter)
113	-------------------------------------------------
114	iTCO_wdt:
115	heartbeat: Watchdog heartbeat in seconds.
116		(2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=30)
117	nowayout: Watchdog cannot be stopped once started
118		(default=kernel config parameter)
119	-------------------------------------------------
120	iTCO_vendor_support:
121	vendorsupport: iTCO vendor specific support mode, default=0 (none),
122		1=SuperMicro Pent3, 2=SuperMicro Pent4+, 911=Broken SMI BIOS
123	-------------------------------------------------
124	ib700wdt:
125	timeout: Watchdog timeout in seconds. 0<= timeout <=30, default=30.
126	nowayout: Watchdog cannot be stopped once started
127		(default=kernel config parameter)
128	-------------------------------------------------
129	ibmasr:
130	nowayout: Watchdog cannot be stopped once started
131		(default=kernel config parameter)
132	-------------------------------------------------
133	imx2_wdt:
134	timeout: Watchdog timeout in seconds (default 60 s)
135	nowayout: Watchdog cannot be stopped once started
136		(default=kernel config parameter)
137	-------------------------------------------------
138	indydog:
139	nowayout: Watchdog cannot be stopped once started
140		(default=kernel config parameter)
141	-------------------------------------------------
142	iop_wdt:
143	nowayout: Watchdog cannot be stopped once started
144		(default=kernel config parameter)
145	-------------------------------------------------
146	it8712f_wdt:
147	margin: Watchdog margin in seconds (default 60)
148	nowayout: Disable watchdog shutdown on close
149		(default=kernel config parameter)
150	-------------------------------------------------
151	it87_wdt:
152	nogameport: Forbid the activation of game port, default=0
153	nocir: Forbid the use of CIR (workaround for some buggy setups); set to 1 if
154	system resets despite watchdog daemon running, default=0
155	exclusive: Watchdog exclusive device open, default=1
156	timeout: Watchdog timeout in seconds, default=60
157	testmode: Watchdog test mode (1 = no reboot), default=0
158	nowayout: Watchdog cannot be stopped once started
159		(default=kernel config parameter)
160	-------------------------------------------------
161	ixp2000_wdt:
162	heartbeat: Watchdog heartbeat in seconds (default 60s)
163	nowayout: Watchdog cannot be stopped once started
164		(default=kernel config parameter)
165	-------------------------------------------------
166	ixp4xx_wdt:
167	heartbeat: Watchdog heartbeat in seconds (default 60s)
168	nowayout: Watchdog cannot be stopped once started
169		(default=kernel config parameter)
170	-------------------------------------------------
171	ks8695_wdt:
172	wdt_time: Watchdog time in seconds. (default=5)
173	nowayout: Watchdog cannot be stopped once started
174		(default=kernel config parameter)
175	-------------------------------------------------
176	machzwd:
177	nowayout: Watchdog cannot be stopped once started
178		(default=kernel config parameter)
179	action: after watchdog resets, generate:
180		0 = RESET(*)  1 = SMI  2 = NMI  3 = SCI
181	-------------------------------------------------
182	max63xx_wdt:
183	heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 60
184	nowayout: Watchdog cannot be stopped once started
185		(default=kernel config parameter)
186	nodelay: Force selection of a timeout setting without initial delay
187		(max6373/74 only, default=0)
188	-------------------------------------------------
189	mixcomwd:
190	nowayout: Watchdog cannot be stopped once started
191		(default=kernel config parameter)
192	-------------------------------------------------
193	mpc8xxx_wdt:
194	timeout: Watchdog timeout in ticks. (0<timeout<65536, default=65535)
195	reset: Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset
196	nowayout: Watchdog cannot be stopped once started
197		(default=kernel config parameter)
198	-------------------------------------------------
199	mv64x60_wdt:
200	nowayout: Watchdog cannot be stopped once started
201		(default=kernel config parameter)
202	-------------------------------------------------
203	nuc900_wdt:
204	heartbeat: Watchdog heartbeats in seconds.
205		(default = 15)
206	nowayout: Watchdog cannot be stopped once started
207		(default=kernel config parameter)
208	-------------------------------------------------
209	omap_wdt:
210	timer_margin: initial watchdog timeout (in seconds)
211	early_enable: Watchdog is started on module insertion (default=0
212	nowayout: Watchdog cannot be stopped once started
213		(default=kernel config parameter)
214	-------------------------------------------------
215	orion_wdt:
216	heartbeat: Initial watchdog heartbeat in seconds
217	nowayout: Watchdog cannot be stopped once started
218		(default=kernel config parameter)
219	-------------------------------------------------
220	pc87413_wdt:
221	io: pc87413 WDT I/O port (default: io).
222	timeout: Watchdog timeout in minutes (default=timeout).
223	nowayout: Watchdog cannot be stopped once started
224		(default=kernel config parameter)
225	-------------------------------------------------
226	pika_wdt:
227	heartbeat: Watchdog heartbeats in seconds. (default = 15)
228	nowayout: Watchdog cannot be stopped once started
229		(default=kernel config parameter)
230	-------------------------------------------------
231	pnx4008_wdt:
232	heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 19
233	nowayout: Set to 1 to keep watchdog running after device release
234	-------------------------------------------------
235	pnx833x_wdt:
236	timeout: Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds)
237	nowayout: Watchdog cannot be stopped once started
238		(default=kernel config parameter)
239	start_enabled: Watchdog is started on module insertion (default=1)
240	-------------------------------------------------
241	rc32434_wdt:
242	timeout: Watchdog timeout value, in seconds (default=20)
243	nowayout: Watchdog cannot be stopped once started
244		(default=kernel config parameter)
245	-------------------------------------------------
246	riowd:
247	riowd_timeout: Watchdog timeout in minutes (default=1)
248	-------------------------------------------------
249	s3c2410_wdt:
250	tmr_margin: Watchdog tmr_margin in seconds. (default=15)
251	tmr_atboot: Watchdog is started at boot time if set to 1, default=0
252	nowayout: Watchdog cannot be stopped once started
253		(default=kernel config parameter)
254	soft_noboot: Watchdog action, set to 1 to ignore reboots, 0 to reboot
255	debug: Watchdog debug, set to >1 for debug, (default 0)
256	-------------------------------------------------
257	sa1100_wdt:
258	margin: Watchdog margin in seconds (default 60s)
259	-------------------------------------------------
260	sb_wdog:
261	timeout: Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)
262	-------------------------------------------------
263	sbc60xxwdt:
264	wdt_stop: SBC60xx WDT 'stop' io port (default 0x45)
265	wdt_start: SBC60xx WDT 'start' io port (default 0x443)
266	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
267	nowayout: Watchdog cannot be stopped once started
268		(default=kernel config parameter)
269	-------------------------------------------------
270	sbc7240_wdt:
271	timeout: Watchdog timeout in seconds. (1<=timeout<=255, default=30)
272	nowayout: Disable watchdog when closing device file
273	-------------------------------------------------
274	sbc8360:
275	timeout: Index into timeout table (0-63) (default=27 (60s))
276	nowayout: Watchdog cannot be stopped once started
277		(default=kernel config parameter)
278	-------------------------------------------------
279	sbc_epx_c3:
280	nowayout: Watchdog cannot be stopped once started
281		(default=kernel config parameter)
282	-------------------------------------------------
283	sbc_fitpc2_wdt:
284	margin: Watchdog margin in seconds (default 60s)
285	nowayout: Watchdog cannot be stopped once started
286	-------------------------------------------------
287	sc1200wdt:
288	isapnp: When set to 0 driver ISA PnP support will be disabled (default=1)
289	io: io port
290	timeout: range is 0-255 minutes, default is 1
291	nowayout: Watchdog cannot be stopped once started
292		(default=kernel config parameter)
293	-------------------------------------------------
294	sc520_wdt:
295	timeout: Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30)
296	nowayout: Watchdog cannot be stopped once started
297		(default=kernel config parameter)
298	-------------------------------------------------
299	sch311x_wdt:
300	force_id: Override the detected device ID
301	therm_trip: Should a ThermTrip trigger the reset generator
302	timeout: Watchdog timeout in seconds. 1<= timeout <=15300, default=60
303	nowayout: Watchdog cannot be stopped once started
304		(default=kernel config parameter)
305	-------------------------------------------------
306	scx200_wdt:
307	margin: Watchdog margin in seconds
308	nowayout: Disable watchdog shutdown on close
309	-------------------------------------------------
310	shwdt:
311	clock_division_ratio: Clock division ratio. Valid ranges are from 0x5 (1.31ms)
312		to 0x7 (5.25ms). (default=7)
313	heartbeat: Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30
314	nowayout: Watchdog cannot be stopped once started
315		(default=kernel config parameter)
316	-------------------------------------------------
317	smsc37b787_wdt:
318	timeout: range is 1-255 units, default is 60
319	nowayout: Watchdog cannot be stopped once started
320		(default=kernel config parameter)
321	-------------------------------------------------
322	softdog:
323	soft_margin: Watchdog soft_margin in seconds.
324		(0 < soft_margin < 65536, default=60)
325	nowayout: Watchdog cannot be stopped once started
326		(default=kernel config parameter)
327	soft_noboot: Softdog action, set to 1 to ignore reboots, 0 to reboot
328		(default=0)
329	-------------------------------------------------
330	stmp3xxx_wdt:
331	heartbeat: Watchdog heartbeat period in seconds from 1 to 4194304, default 19
332	-------------------------------------------------
333	tegra_wdt:
334	heartbeat: Watchdog heartbeats in seconds. (default = 120)
335	nowayout: Watchdog cannot be stopped once started
336		(default=kernel config parameter)
337	-------------------------------------------------
338	ts72xx_wdt:
339	timeout: Watchdog timeout in seconds. (1 <= timeout <= 8, default=8)
340	nowayout: Disable watchdog shutdown on close
341	-------------------------------------------------
342	twl4030_wdt:
343	nowayout: Watchdog cannot be stopped once started
344		(default=kernel config parameter)
345	-------------------------------------------------
346	txx9wdt:
347	timeout: Watchdog timeout in seconds. (0<timeout<N, default=60)
348	nowayout: Watchdog cannot be stopped once started
349		(default=kernel config parameter)
350	-------------------------------------------------
351	w83627hf_wdt:
352	wdt_io: w83627hf/thf WDT io port (default 0x2E)
353	timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
354	nowayout: Watchdog cannot be stopped once started
355		(default=kernel config parameter)
356	-------------------------------------------------
357	w83697hf_wdt:
358	wdt_io: w83697hf/hg WDT io port (default 0x2e, 0 = autodetect)
359	timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60)
360	nowayout: Watchdog cannot be stopped once started
361		(default=kernel config parameter)
362	early_disable: Watchdog gets disabled at boot time (default=1)
363	-------------------------------------------------
364	w83697ug_wdt:
365	wdt_io: w83697ug/uf WDT io port (default 0x2e)
366	timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60)
367	nowayout: Watchdog cannot be stopped once started
368		(default=kernel config parameter)
369	-------------------------------------------------
370	w83877f_wdt:
371	timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
372	nowayout: Watchdog cannot be stopped once started
373		(default=kernel config parameter)
374	-------------------------------------------------
375	w83977f_wdt:
376	timeout: Watchdog timeout in seconds (15..7635), default=45)
377	testmode: Watchdog testmode (1 = no reboot), default=0
378	nowayout: Watchdog cannot be stopped once started
379		(default=kernel config parameter)
380	-------------------------------------------------
381	wafer5823wdt:
382	timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
383	nowayout: Watchdog cannot be stopped once started
384		(default=kernel config parameter)
385	-------------------------------------------------
386	wdt285:
387	soft_margin: Watchdog timeout in seconds (default=60)
388	-------------------------------------------------
389	wdt977:
390	timeout: Watchdog timeout in seconds (60..15300, default=60)
391	testmode: Watchdog testmode (1 = no reboot), default=0
392	nowayout: Watchdog cannot be stopped once started
393		(default=kernel config parameter)
394	-------------------------------------------------
395	wm831x_wdt:
396	nowayout: Watchdog cannot be stopped once started
397		(default=kernel config parameter)
398	-------------------------------------------------
399	wm8350_wdt:
400	nowayout: Watchdog cannot be stopped once started
401		(default=kernel config parameter)
402	-------------------------------------------------
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