This file provides information on the module parameters of many ofthe Linux watchdog drivers. Watchdog driver parameter specs shouldbe listed here unless the driver has its own driver-specific informationfile.
See The kernel's command-line parameters for information onproviding kernel parameters for builtin drivers versus loadablemodules.
- watchdog core:
- open_timeout:
Maximum time, in seconds, for which the watchdog framework will takecare of pinging a running hardware watchdog until userspace opens thecorresponding /dev/watchdogN device. A value of 0 means an infinitetimeout. Setting this to a non-zero value can be useful to ensure thateither userspace comes up properly, or the board gets reset and allowsfallback 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)
- 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)
- 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)
- pseries-wdt:
- action:
Action taken when watchdog expires: 0 (power off), 1 (restart),2 (dump and restart). (default=1)
- timeout:
Initial watchdog timeout in seconds. (default=60)
- nowayout:
Watchdog cannot be stopped once started.(default=kernel config parameter)
- 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
