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Diffstat (limited to 'Documentation/watchdog/watchdog-parameters.rst')
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diff --git a/Documentation/watchdog/watchdog-parameters.rst b/Documentation/watchdog/watchdog-parameters.rst new file mode 100644 index 000000000..29153eed6 --- /dev/null +++ b/Documentation/watchdog/watchdog-parameters.rst @@ -0,0 +1,740 @@ +========================== +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) + +------------------------------------------------- + +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 |