[linux-block.git] / Documentation / watchdog / watchdog-parameters.rst

==========================
WatchDog Module Parameters
==========================

This file provides information on the module parameters of many of
the Linux watchdog drivers.  Watchdog driver parameter specs should
be listed here unless the driver has its own driver-specific information
file.

See Documentation/admin-guide/kernel-parameters.rst for information on
providing kernel parameters for builtin drivers versus loadable
modules.

-------------------------------------------------

watchdog core:
    open_timeout:
	Maximum time, in seconds, for which the watchdog framework will take
	care of pinging a running hardware watchdog until userspace opens the
	corresponding /dev/watchdogN device. A value of 0 means an infinite
	timeout. Setting this to a non-zero value can be useful to ensure that
	either userspace comes up properly, or the board gets reset and allows
	fallback logic in the bootloader to try something else.

-------------------------------------------------

acquirewdt:
    wdt_stop:
	Acquire WDT 'stop' io port (default 0x43)
    wdt_start:
	Acquire WDT 'start' io port (default 0x443)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

advantechwdt:
    wdt_stop:
	Advantech WDT 'stop' io port (default 0x443)
    wdt_start:
	Advantech WDT 'start' io port (default 0x443)
    timeout:
	Watchdog timeout in seconds. 1<= timeout <=63, default=60.
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

alim1535_wdt:
    timeout:
	Watchdog timeout in seconds. (0 < timeout < 18000, default=60
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

alim7101_wdt:
    timeout:
	Watchdog timeout in seconds. (1<=timeout<=3600, default=30
    use_gpio:
	Use the gpio watchdog (required by old cobalt boards).
	default=0/off/no
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

ar7_wdt:
    margin:
	Watchdog margin in seconds (default=60)
    nowayout:
	Disable watchdog shutdown on close
	(default=kernel config parameter)

-------------------------------------------------

armada_37xx_wdt:
    timeout:
	Watchdog timeout in seconds. (default=120)
    nowayout:
	Disable watchdog shutdown on close
	(default=kernel config parameter)

-------------------------------------------------

at91rm9200_wdt:
    wdt_time:
	Watchdog time in seconds. (default=5)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

at91sam9_wdt:
    heartbeat:
	Watchdog heartbeats in seconds. (default = 15)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

bcm47xx_wdt:
    wdt_time:
	Watchdog time in seconds. (default=30)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

coh901327_wdt:
    margin:
	Watchdog margin in seconds (default 60s)

-------------------------------------------------

cpu5wdt:
    port:
	base address of watchdog card, default is 0x91
    verbose:
	be verbose, default is 0 (no)
    ticks:
	count down ticks, default is 10000

-------------------------------------------------

cpwd:
    wd0_timeout:
	Default watchdog0 timeout in 1/10secs
    wd1_timeout:
	Default watchdog1 timeout in 1/10secs
    wd2_timeout:
	Default watchdog2 timeout in 1/10secs

-------------------------------------------------

da9052wdt:
    timeout:
	Watchdog timeout in seconds. 2<= timeout <=131, default=2.048s
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

davinci_wdt:
    heartbeat:
	Watchdog heartbeat period in seconds from 1 to 600, default 60

-------------------------------------------------

ebc-c384_wdt:
    timeout:
	Watchdog timeout in seconds. (1<=timeout<=15300, default=60)
    nowayout:
	Watchdog cannot be stopped once started

-------------------------------------------------

ep93xx_wdt:
    nowayout:
	Watchdog cannot be stopped once started
    timeout:
	Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD)

-------------------------------------------------

eurotechwdt:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)
    io:
	Eurotech WDT io port (default=0x3f0)
    irq:
	Eurotech WDT irq (default=10)
    ev:
	Eurotech WDT event type (default is `int`)

-------------------------------------------------

gef_wdt:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

geodewdt:
    timeout:
	Watchdog timeout in seconds. 1<= timeout <=131, default=60.
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

i6300esb:
    heartbeat:
	Watchdog heartbeat in seconds. (1<heartbeat<2046, default=30)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

iTCO_wdt:
    heartbeat:
	Watchdog heartbeat in seconds.
	(2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=30)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

iTCO_vendor_support:
    vendorsupport:
	iTCO vendor specific support mode, default=0 (none),
	1=SuperMicro Pent3, 2=SuperMicro Pent4+, 911=Broken SMI BIOS

-------------------------------------------------

ib700wdt:
    timeout:
	Watchdog timeout in seconds. 0<= timeout <=30, default=30.
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

ibmasr:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

imx2_wdt:
    timeout:
	Watchdog timeout in seconds (default 60 s)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

indydog:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

iop_wdt:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

it8712f_wdt:
    margin:
	Watchdog margin in seconds (default 60)
    nowayout:
	Disable watchdog shutdown on close
	(default=kernel config parameter)

-------------------------------------------------

it87_wdt:
    nogameport:
	Forbid the activation of game port, default=0
    nocir:
	Forbid the use of CIR (workaround for some buggy setups); set to 1 if
system resets despite watchdog daemon running, default=0
    exclusive:
	Watchdog exclusive device open, default=1
    timeout:
	Watchdog timeout in seconds, default=60
    testmode:
	Watchdog test mode (1 = no reboot), default=0
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

ixp4xx_wdt:
    heartbeat:
	Watchdog heartbeat in seconds (default 60s)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

ks8695_wdt:
    wdt_time:
	Watchdog time in seconds. (default=5)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

machzwd:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)
    action:
	after watchdog resets, generate:
	0 = RESET(*)  1 = SMI  2 = NMI  3 = SCI

-------------------------------------------------

max63xx_wdt:
    heartbeat:
	Watchdog heartbeat period in seconds from 1 to 60, default 60
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)
    nodelay:
	Force selection of a timeout setting without initial delay
	(max6373/74 only, default=0)

-------------------------------------------------

mixcomwd:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

mpc8xxx_wdt:
    timeout:
	Watchdog timeout in ticks. (0<timeout<65536, default=65535)
    reset:
	Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

mv64x60_wdt:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

ni903x_wdt:
    timeout:
	Initial watchdog timeout in seconds (0<timeout<516, default=60)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

nic7018_wdt:
    timeout:
	Initial watchdog timeout in seconds (0<timeout<464, default=80)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

nuc900_wdt:
    heartbeat:
	Watchdog heartbeats in seconds.
	(default = 15)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

omap_wdt:
    timer_margin:
	initial watchdog timeout (in seconds)
    early_enable:
	Watchdog is started on module insertion (default=0
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

orion_wdt:
    heartbeat:
	Initial watchdog heartbeat in seconds
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

pc87413_wdt:
    io:
	pc87413 WDT I/O port (default: io).
    timeout:
	Watchdog timeout in minutes (default=timeout).
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

pika_wdt:
    heartbeat:
	Watchdog heartbeats in seconds. (default = 15)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

pnx4008_wdt:
    heartbeat:
	Watchdog heartbeat period in seconds from 1 to 60, default 19
    nowayout:
	Set to 1 to keep watchdog running after device release

-------------------------------------------------

pnx833x_wdt:
    timeout:
	Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)
    start_enabled:
	Watchdog is started on module insertion (default=1)

-------------------------------------------------

rc32434_wdt:
    timeout:
	Watchdog timeout value, in seconds (default=20)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

riowd:
    riowd_timeout:
	Watchdog timeout in minutes (default=1)

-------------------------------------------------

s3c2410_wdt:
    tmr_margin:
	Watchdog tmr_margin in seconds. (default=15)
    tmr_atboot:
	Watchdog is started at boot time if set to 1, default=0
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)
    soft_noboot:
	Watchdog action, set to 1 to ignore reboots, 0 to reboot
    debug:
	Watchdog debug, set to >1 for debug, (default 0)

-------------------------------------------------

sa1100_wdt:
    margin:
	Watchdog margin in seconds (default 60s)

-------------------------------------------------

sb_wdog:
    timeout:
	Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)

-------------------------------------------------

sbc60xxwdt:
    wdt_stop:
	SBC60xx WDT 'stop' io port (default 0x45)
    wdt_start:
	SBC60xx WDT 'start' io port (default 0x443)
    timeout:
	Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

sbc7240_wdt:
    timeout:
	Watchdog timeout in seconds. (1<=timeout<=255, default=30)
    nowayout:
	Disable watchdog when closing device file

-------------------------------------------------

sbc8360:
    timeout:
	Index into timeout table (0-63) (default=27 (60s))
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

sbc_epx_c3:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

sbc_fitpc2_wdt:
    margin:
	Watchdog margin in seconds (default 60s)
    nowayout:
	Watchdog cannot be stopped once started

-------------------------------------------------

sbsa_gwdt:
    timeout:
	Watchdog timeout in seconds. (default 10s)
    action:
	Watchdog action at the first stage timeout,
	set to 0 to ignore, 1 to panic. (default=0)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

sc1200wdt:
    isapnp:
	When set to 0 driver ISA PnP support will be disabled (default=1)
    io:
	io port
    timeout:
	range is 0-255 minutes, default is 1
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

sc520_wdt:
    timeout:
	Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

sch311x_wdt:
    force_id:
	Override the detected device ID
    therm_trip:
	Should a ThermTrip trigger the reset generator
    timeout:
	Watchdog timeout in seconds. 1<= timeout <=15300, default=60
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

scx200_wdt:
    margin:
	Watchdog margin in seconds
    nowayout:
	Disable watchdog shutdown on close

-------------------------------------------------

shwdt:
    clock_division_ratio:
	Clock division ratio. Valid ranges are from 0x5 (1.31ms)
	to 0x7 (5.25ms). (default=7)
    heartbeat:
	Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

smsc37b787_wdt:
    timeout:
	range is 1-255 units, default is 60
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

softdog:
    soft_margin:
	Watchdog soft_margin in seconds.
	(0 < soft_margin < 65536, default=60)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)
    soft_noboot:
	Softdog action, set to 1 to ignore reboots, 0 to reboot
	(default=0)

-------------------------------------------------

stmp3xxx_wdt:
    heartbeat:
	Watchdog heartbeat period in seconds from 1 to 4194304, default 19

-------------------------------------------------

tegra_wdt:
    heartbeat:
	Watchdog heartbeats in seconds. (default = 120)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

ts72xx_wdt:
    timeout:
	Watchdog timeout in seconds. (1 <= timeout <= 8, default=8)
    nowayout:
	Disable watchdog shutdown on close

-------------------------------------------------

twl4030_wdt:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

txx9wdt:
    timeout:
	Watchdog timeout in seconds. (0<timeout<N, default=60)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

uniphier_wdt:
    timeout:
	Watchdog timeout in power of two seconds.
	(1 <= timeout <= 128, default=64)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

w83627hf_wdt:
    wdt_io:
	w83627hf/thf WDT io port (default 0x2E)
    timeout:
	Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

w83877f_wdt:
    timeout:
	Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

w83977f_wdt:
    timeout:
	Watchdog timeout in seconds (15..7635), default=45)
    testmode:
	Watchdog testmode (1 = no reboot), default=0
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

wafer5823wdt:
    timeout:
	Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

wdt285:
    soft_margin:
	Watchdog timeout in seconds (default=60)

-------------------------------------------------

wdt977:
    timeout:
	Watchdog timeout in seconds (60..15300, default=60)
    testmode:
	Watchdog testmode (1 = no reboot), default=0
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

wm831x_wdt:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

wm8350_wdt:
    nowayout:
	Watchdog cannot be stopped once started
	(default=kernel config parameter)

-------------------------------------------------

sun4v_wdt:
    timeout_ms:
	Watchdog timeout in milliseconds 1..180000, default=60000)
    nowayout:
	Watchdog cannot be stopped once started
Commit	Line	Data
74665686 MCC	1	==========================
	2	WatchDog Module Parameters
	3	==========================
	4
	5	This file provides information on the module parameters of many of
	6	the Linux watchdog drivers. Watchdog driver parameter specs should
	7	be listed here unless the driver has its own driver-specific information
	8	file.
	9
	10	See Documentation/admin-guide/kernel-parameters.rst for information on
	11	providing kernel parameters for builtin drivers versus loadable
	12	modules.
	13
	14	-------------------------------------------------
3bd41e59	15
74665686 MCC	16	watchdog core:
	17	open_timeout:
	18	Maximum time, in seconds, for which the watchdog framework will take
	19	care of pinging a running hardware watchdog until userspace opens the
	20	corresponding /dev/watchdogN device. A value of 0 means an infinite
	21	timeout. Setting this to a non-zero value can be useful to ensure that
	22	either userspace comes up properly, or the board gets reset and allows
	23	fallback logic in the bootloader to try something else.
	24
	25	-------------------------------------------------
3bd41e59	26
74665686 MCC	27	acquirewdt:
	28	wdt_stop:
	29	Acquire WDT 'stop' io port (default 0x43)
	30	wdt_start:
	31	Acquire WDT 'start' io port (default 0x443)
	32	nowayout:
	33	Watchdog cannot be stopped once started
	34	(default=kernel config parameter)
	35
	36	-------------------------------------------------
	37
	38	advantechwdt:
	39	wdt_stop:
	40	Advantech WDT 'stop' io port (default 0x443)
	41	wdt_start:
	42	Advantech WDT 'start' io port (default 0x443)
	43	timeout:
	44	Watchdog timeout in seconds. 1<= timeout <=63, default=60.
	45	nowayout:
	46	Watchdog cannot be stopped once started
	47	(default=kernel config parameter)
	48
	49	-------------------------------------------------
	50
	51	alim1535_wdt:
	52	timeout:
	53	Watchdog timeout in seconds. (0 < timeout < 18000, default=60
	54	nowayout:
	55	Watchdog cannot be stopped once started
	56	(default=kernel config parameter)
	57
	58	-------------------------------------------------
	59
	60	alim7101_wdt:
	61	timeout:
	62	Watchdog timeout in seconds. (1<=timeout<=3600, default=30
	63	use_gpio:
	64	Use the gpio watchdog (required by old cobalt boards).
	65	default=0/off/no
	66	nowayout:
	67	Watchdog cannot be stopped once started
	68	(default=kernel config parameter)
	69
	70	-------------------------------------------------
	71
	72	ar7_wdt:
	73	margin:
	74	Watchdog margin in seconds (default=60)
	75	nowayout:
	76	Disable watchdog shutdown on close
	77	(default=kernel config parameter)
	78
	79	-------------------------------------------------
	80
	81	armada_37xx_wdt:
	82	timeout:
	83	Watchdog timeout in seconds. (default=120)
	84	nowayout:
	85	Disable watchdog shutdown on close
	86	(default=kernel config parameter)
	87
	88	-------------------------------------------------
	89
	90	at91rm9200_wdt:
91	wdt_time:
92	Watchdog time in seconds. (default=5)
93	nowayout:
94	Watchdog cannot be stopped once started
95	(default=kernel config parameter)
96
97	-------------------------------------------------
98
99	at91sam9_wdt:
100	heartbeat:
101	Watchdog heartbeats in seconds. (default = 15)
102	nowayout:
103	Watchdog cannot be stopped once started
104	(default=kernel config parameter)
105
106	-------------------------------------------------
107
108	bcm47xx_wdt:
109	wdt_time:
110	Watchdog time in seconds. (default=30)
111	nowayout:
112	Watchdog cannot be stopped once started
113	(default=kernel config parameter)
114
115	-------------------------------------------------
116
117	coh901327_wdt:
118	margin:
119	Watchdog margin in seconds (default 60s)
120
121	-------------------------------------------------
122
123	cpu5wdt:
124	port:
125	base address of watchdog card, default is 0x91
126	verbose:
127	be verbose, default is 0 (no)
128	ticks:
129	count down ticks, default is 10000
130
131	-------------------------------------------------
132
133	cpwd:
134	wd0_timeout:
135	Default watchdog0 timeout in 1/10secs
136	wd1_timeout:
137	Default watchdog1 timeout in 1/10secs
138	wd2_timeout:
139	Default watchdog2 timeout in 1/10secs
140
141	-------------------------------------------------
142
143	da9052wdt:
144	timeout:
145	Watchdog timeout in seconds. 2<= timeout <=131, default=2.048s
146	nowayout:
147	Watchdog cannot be stopped once started
148	(default=kernel config parameter)
149
150	-------------------------------------------------
151
152	davinci_wdt:
153	heartbeat:
154	Watchdog heartbeat period in seconds from 1 to 600, default 60
155
156	-------------------------------------------------
157
158	ebc-c384_wdt:
159	timeout:
160	Watchdog timeout in seconds. (1<=timeout<=15300, default=60)
161	nowayout:
162	Watchdog cannot be stopped once started
163
164	-------------------------------------------------
165
166	ep93xx_wdt:
167	nowayout:
168	Watchdog cannot be stopped once started
169	timeout:
170	Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD)
171
172	-------------------------------------------------
173
174	eurotechwdt:
175	nowayout:
176	Watchdog cannot be stopped once started
177	(default=kernel config parameter)
178	io:
179	Eurotech WDT io port (default=0x3f0)
180	irq:
181	Eurotech WDT irq (default=10)
182	ev:
183	Eurotech WDT event type (default is `int`)
184
185	-------------------------------------------------
186
187	gef_wdt:
188	nowayout:
189	Watchdog cannot be stopped once started
190	(default=kernel config parameter)
191
192	-------------------------------------------------
193
194	geodewdt:
195	timeout:
196	Watchdog timeout in seconds. 1<= timeout <=131, default=60.
197	nowayout:
198	Watchdog cannot be stopped once started
199	(default=kernel config parameter)
200
201	-------------------------------------------------
202
203	i6300esb:
204	heartbeat:
205	Watchdog heartbeat in seconds. (1<heartbeat<2046, default=30)
206	nowayout:
207	Watchdog cannot be stopped once started
208	(default=kernel config parameter)
209
210	-------------------------------------------------
211
212	iTCO_wdt:
213	heartbeat:
214	Watchdog heartbeat in seconds.
215	(2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=30)
216	nowayout:
217	Watchdog cannot be stopped once started
218	(default=kernel config parameter)
219
220	-------------------------------------------------
221
222	iTCO_vendor_support:
223	vendorsupport:
224	iTCO vendor specific support mode, default=0 (none),
225	1=SuperMicro Pent3, 2=SuperMicro Pent4+, 911=Broken SMI BIOS
226
227	-------------------------------------------------
228
229	ib700wdt:
230	timeout:
231	Watchdog timeout in seconds. 0<= timeout <=30, default=30.
232	nowayout:
233	Watchdog cannot be stopped once started
234	(default=kernel config parameter)
235
236	-------------------------------------------------
237
238	ibmasr:
239	nowayout:
240	Watchdog cannot be stopped once started
241	(default=kernel config parameter)
242
243	-------------------------------------------------
244
245	imx2_wdt:
246	timeout:
247	Watchdog timeout in seconds (default 60 s)
248	nowayout:
249	Watchdog cannot be stopped once started
250	(default=kernel config parameter)
251
252	-------------------------------------------------
253
254	indydog:
255	nowayout:
256	Watchdog cannot be stopped once started
257	(default=kernel config parameter)
258
259	-------------------------------------------------
260
261	iop_wdt:
262	nowayout:
263	Watchdog cannot be stopped once started
264	(default=kernel config parameter)
265
266	-------------------------------------------------
267
268	it8712f_wdt:
269	margin:
270	Watchdog margin in seconds (default 60)
271	nowayout:
272	Disable watchdog shutdown on close
273	(default=kernel config parameter)
274
275	-------------------------------------------------
276
277	it87_wdt:
278	nogameport:
279	Forbid the activation of game port, default=0
280	nocir:
281	Forbid the use of CIR (workaround for some buggy setups); set to 1 if
282	system resets despite watchdog daemon running, default=0
283	exclusive:
284	Watchdog exclusive device open, default=1
285	timeout:
286	Watchdog timeout in seconds, default=60
287	testmode:
288	Watchdog test mode (1 = no reboot), default=0
289	nowayout:
290	Watchdog cannot be stopped once started
291	(default=kernel config parameter)
292
293	-------------------------------------------------
294
295	ixp4xx_wdt:
296	heartbeat:
297	Watchdog heartbeat in seconds (default 60s)
298	nowayout:
299	Watchdog cannot be stopped once started
300	(default=kernel config parameter)
301
302	-------------------------------------------------
303
304	ks8695_wdt:
305	wdt_time:
306	Watchdog time in seconds. (default=5)
307	nowayout:
308	Watchdog cannot be stopped once started
309	(default=kernel config parameter)
310
311	-------------------------------------------------
312
313	machzwd:
314	nowayout:
315	Watchdog cannot be stopped once started
316	(default=kernel config parameter)
317	action:
318	after watchdog resets, generate:
319	0 = RESET(*) 1 = SMI 2 = NMI 3 = SCI
320
321	-------------------------------------------------
322
323	max63xx_wdt:
324	heartbeat:
325	Watchdog heartbeat period in seconds from 1 to 60, default 60
326	nowayout:
327	Watchdog cannot be stopped once started
328	(default=kernel config parameter)
329	nodelay:
330	Force selection of a timeout setting without initial delay
331	(max6373/74 only, default=0)
332
333	-------------------------------------------------
334
335	mixcomwd:
336	nowayout:
337	Watchdog cannot be stopped once started
338	(default=kernel config parameter)
339
340	-------------------------------------------------
341
342	mpc8xxx_wdt:
343	timeout:
344	Watchdog timeout in ticks. (0<timeout<65536, default=65535)
345	reset:
346	Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset
347	nowayout:
348	Watchdog cannot be stopped once started
349	(default=kernel config parameter)
350
351	-------------------------------------------------
352
353	mv64x60_wdt:
354	nowayout:
355	Watchdog cannot be stopped once started
356	(default=kernel config parameter)
357
358	-------------------------------------------------
359
360	ni903x_wdt:
361	timeout:
362	Initial watchdog timeout in seconds (0<timeout<516, default=60)
363	nowayout:
364	Watchdog cannot be stopped once started
365	(default=kernel config parameter)
366
367	-------------------------------------------------
368
369	nic7018_wdt:
370	timeout:
371	Initial watchdog timeout in seconds (0<timeout<464, default=80)
372	nowayout:
373	Watchdog cannot be stopped once started
374	(default=kernel config parameter)
375
376	-------------------------------------------------
377
378	nuc900_wdt:
379	heartbeat:
380	Watchdog heartbeats in seconds.
381	(default = 15)
382	nowayout:
383	Watchdog cannot be stopped once started
384	(default=kernel config parameter)
385
386	-------------------------------------------------
387
388	omap_wdt:
389	timer_margin:
390	initial watchdog timeout (in seconds)
391	early_enable:
392	Watchdog is started on module insertion (default=0
393	nowayout:
394	Watchdog cannot be stopped once started
395	(default=kernel config parameter)
396
397	-------------------------------------------------
398
399	orion_wdt:
400	heartbeat:
401	Initial watchdog heartbeat in seconds
402	nowayout:
403	Watchdog cannot be stopped once started
404	(default=kernel config parameter)
405
406	-------------------------------------------------
407
408	pc87413_wdt:
409	io:
410	pc87413 WDT I/O port (default: io).
411	timeout:
412	Watchdog timeout in minutes (default=timeout).
413	nowayout:
414	Watchdog cannot be stopped once started
415	(default=kernel config parameter)
416
417	-------------------------------------------------
418
419	pika_wdt:
420	heartbeat:
421	Watchdog heartbeats in seconds. (default = 15)
422	nowayout:
423	Watchdog cannot be stopped once started
424	(default=kernel config parameter)
425
426	-------------------------------------------------
427
428	pnx4008_wdt:
429	heartbeat:
430	Watchdog heartbeat period in seconds from 1 to 60, default 19
431	nowayout:
432	Set to 1 to keep watchdog running after device release
433
434	-------------------------------------------------
435
436	pnx833x_wdt:
437	timeout:
438	Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds)
439	nowayout:
440	Watchdog cannot be stopped once started
441	(default=kernel config parameter)
442	start_enabled:
443	Watchdog is started on module insertion (default=1)
444
445	-------------------------------------------------
446
447	rc32434_wdt:
448	timeout:
449	Watchdog timeout value, in seconds (default=20)
450	nowayout:
451	Watchdog cannot be stopped once started
452	(default=kernel config parameter)
453
454	-------------------------------------------------
455
456	riowd:
457	riowd_timeout:
458	Watchdog timeout in minutes (default=1)
459
460	-------------------------------------------------
461
462	s3c2410_wdt:
463	tmr_margin:
464	Watchdog tmr_margin in seconds. (default=15)
465	tmr_atboot:
466	Watchdog is started at boot time if set to 1, default=0
467	nowayout:
468	Watchdog cannot be stopped once started
469	(default=kernel config parameter)
470	soft_noboot:
471	Watchdog action, set to 1 to ignore reboots, 0 to reboot
472	debug:
473	Watchdog debug, set to >1 for debug, (default 0)
474
475	-------------------------------------------------
476
477	sa1100_wdt:
478	margin:
479	Watchdog margin in seconds (default 60s)
480
481	-------------------------------------------------
482
483	sb_wdog:
484	timeout:
485	Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)
486
487	-------------------------------------------------
488
489	sbc60xxwdt:
490	wdt_stop:
491	SBC60xx WDT 'stop' io port (default 0x45)
492	wdt_start:
493	SBC60xx WDT 'start' io port (default 0x443)
494	timeout:
495	Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
496	nowayout:
497	Watchdog cannot be stopped once started
498	(default=kernel config parameter)
499
500	-------------------------------------------------
501
502	sbc7240_wdt:
503	timeout:
504	Watchdog timeout in seconds. (1<=timeout<=255, default=30)
505	nowayout:
506	Disable watchdog when closing device file
507
508	-------------------------------------------------
509
510	sbc8360:
511	timeout:
512	Index into timeout table (0-63) (default=27 (60s))
513	nowayout:
514	Watchdog cannot be stopped once started
515	(default=kernel config parameter)
516
517	-------------------------------------------------
518
519	sbc_epx_c3:
520	nowayout:
521	Watchdog cannot be stopped once started
522	(default=kernel config parameter)
523
524	-------------------------------------------------
525
526	sbc_fitpc2_wdt:
527	margin:
528	Watchdog margin in seconds (default 60s)
529	nowayout:
530	Watchdog cannot be stopped once started
531
532	-------------------------------------------------
533
534	sbsa_gwdt:
535	timeout:
536	Watchdog timeout in seconds. (default 10s)
537	action:
538	Watchdog action at the first stage timeout,
539	set to 0 to ignore, 1 to panic. (default=0)
540	nowayout:
541	Watchdog cannot be stopped once started
542	(default=kernel config parameter)
543
544	-------------------------------------------------
545
546	sc1200wdt:
547	isapnp:
548	When set to 0 driver ISA PnP support will be disabled (default=1)
549	io:
550	io port
551	timeout:
552	range is 0-255 minutes, default is 1
553	nowayout:
554	Watchdog cannot be stopped once started
555	(default=kernel config parameter)
556
557	-------------------------------------------------
558
559	sc520_wdt:
560	timeout:
561	Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30)
562	nowayout:
563	Watchdog cannot be stopped once started
564	(default=kernel config parameter)
565
566	-------------------------------------------------
567
568	sch311x_wdt:
569	force_id:
570	Override the detected device ID
571	therm_trip:
572	Should a ThermTrip trigger the reset generator
573	timeout:
574	Watchdog timeout in seconds. 1<= timeout <=15300, default=60
575	nowayout:
576	Watchdog cannot be stopped once started
577	(default=kernel config parameter)
578
579	-------------------------------------------------
580
581	scx200_wdt:
582	margin:
583	Watchdog margin in seconds
584	nowayout:
585	Disable watchdog shutdown on close
586
587	-------------------------------------------------
588
589	shwdt:
590	clock_division_ratio:
591	Clock division ratio. Valid ranges are from 0x5 (1.31ms)
592	to 0x7 (5.25ms). (default=7)
593	heartbeat:
594	Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30
595	nowayout:
596	Watchdog cannot be stopped once started
597	(default=kernel config parameter)
598
599	-------------------------------------------------
600
601	smsc37b787_wdt:
602	timeout:
603	range is 1-255 units, default is 60
604	nowayout:
605	Watchdog cannot be stopped once started
606	(default=kernel config parameter)
607
608	-------------------------------------------------
609
610	softdog:
611	soft_margin:
612	Watchdog soft_margin in seconds.
613	(0 < soft_margin < 65536, default=60)
614	nowayout:
615	Watchdog cannot be stopped once started
616	(default=kernel config parameter)
617	soft_noboot:
618	Softdog action, set to 1 to ignore reboots, 0 to reboot
619	(default=0)
620
621	-------------------------------------------------
622
623	stmp3xxx_wdt:
624	heartbeat:
625	Watchdog heartbeat period in seconds from 1 to 4194304, default 19
626
627	-------------------------------------------------
628
629	tegra_wdt:
630	heartbeat:
631	Watchdog heartbeats in seconds. (default = 120)
632	nowayout:
633	Watchdog cannot be stopped once started
634	(default=kernel config parameter)
635
636	-------------------------------------------------
637
638	ts72xx_wdt:
639	timeout:
640	Watchdog timeout in seconds. (1 <= timeout <= 8, default=8)
641	nowayout:
642	Disable watchdog shutdown on close
643
644	-------------------------------------------------
645
646	twl4030_wdt:
647	nowayout:
648	Watchdog cannot be stopped once started
649	(default=kernel config parameter)
650
651	-------------------------------------------------
652
653	txx9wdt:
654	timeout:
655	Watchdog timeout in seconds. (0<timeout<N, default=60)
656	nowayout:
657	Watchdog cannot be stopped once started
658	(default=kernel config parameter)
659
660	-------------------------------------------------
661
662	uniphier_wdt:
663	timeout:
664	Watchdog timeout in power of two seconds.
665	(1 <= timeout <= 128, default=64)
666	nowayout:
667	Watchdog cannot be stopped once started
668	(default=kernel config parameter)
669
670	-------------------------------------------------
671
672	w83627hf_wdt:
673	wdt_io:
674	w83627hf/thf WDT io port (default 0x2E)
675	timeout:
676	Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
677	nowayout:
678	Watchdog cannot be stopped once started
679	(default=kernel config parameter)
680
681	-------------------------------------------------
682
683	w83877f_wdt:
684	timeout:
685	Watchdog timeout in seconds. (1<=timeout<=3600, default=30)
686	nowayout:
687	Watchdog cannot be stopped once started
688	(default=kernel config parameter)
689
690	-------------------------------------------------
691
692	w83977f_wdt:
693	timeout:
694	Watchdog timeout in seconds (15..7635), default=45)
695	testmode:
696	Watchdog testmode (1 = no reboot), default=0
697	nowayout:
698	Watchdog cannot be stopped once started
699	(default=kernel config parameter)
700
701	-------------------------------------------------
702
703	wafer5823wdt:
704	timeout:
705	Watchdog timeout in seconds. 1 <= timeout <= 255, default=60.
706	nowayout:
707	Watchdog cannot be stopped once started
708	(default=kernel config parameter)
709
710	-------------------------------------------------
711
712	wdt285:
713	soft_margin:
714	Watchdog timeout in seconds (default=60)
715
716	-------------------------------------------------
717
718	wdt977:
719	timeout:
720	Watchdog timeout in seconds (60..15300, default=60)
721	testmode:
722	Watchdog testmode (1 = no reboot), default=0
723	nowayout:
724	Watchdog cannot be stopped once started
725	(default=kernel config parameter)
726
727	-------------------------------------------------
728
729	wm831x_wdt:
730	nowayout:
731	Watchdog cannot be stopped once started
732	(default=kernel config parameter)
733
734	-------------------------------------------------
735
736	wm8350_wdt:
737	nowayout:
738	Watchdog cannot be stopped once started
739	(default=kernel config parameter)
740
741	-------------------------------------------------
742
743	sun4v_wdt:
744	timeout_ms:
745	Watchdog timeout in milliseconds 1..180000, default=60000)
746	nowayout:
747	Watchdog cannot be stopped once started