========================== 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. (11 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