1This file provides information on the module parameters of many of 2the Linux watchdog drivers. Watchdog driver parameter specs should 3be listed here unless the driver has its own driver-specific information 4file. 5 6 7See Documentation/kernel-parameters.txt for information on 8providing kernel parameters for builtin drivers versus loadable 9modules. 10 11 12------------------------------------------------- 13acquirewdt: 14wdt_stop: Acquire WDT 'stop' io port (default 0x43) 15wdt_start: Acquire WDT 'start' io port (default 0x443) 16nowayout: Watchdog cannot be stopped once started 17 (default=kernel config parameter) 18------------------------------------------------- 19advantechwdt: 20wdt_stop: Advantech WDT 'stop' io port (default 0x443) 21wdt_start: Advantech WDT 'start' io port (default 0x443) 22timeout: Watchdog timeout in seconds. 1<= timeout <=63, default=60. 23nowayout: Watchdog cannot be stopped once started 24 (default=kernel config parameter) 25------------------------------------------------- 26alim1535_wdt: 27timeout: Watchdog timeout in seconds. (0 < timeout < 18000, default=60 28nowayout: Watchdog cannot be stopped once started 29 (default=kernel config parameter) 30------------------------------------------------- 31alim7101_wdt: 32timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30 33use_gpio: Use the gpio watchdog (required by old cobalt boards). 34 default=0/off/no 35nowayout: Watchdog cannot be stopped once started 36 (default=kernel config parameter) 37------------------------------------------------- 38ar7_wdt: 39margin: Watchdog margin in seconds (default=60) 40nowayout: Disable watchdog shutdown on close 41 (default=kernel config parameter) 42------------------------------------------------- 43at32ap700x_wdt: 44timeout: Timeout value. Limited to be 1 or 2 seconds. (default=2) 45nowayout: Watchdog cannot be stopped once started 46 (default=kernel config parameter) 47------------------------------------------------- 48at91rm9200_wdt: 49wdt_time: Watchdog time in seconds. (default=5) 50nowayout: Watchdog cannot be stopped once started 51 (default=kernel config parameter) 52------------------------------------------------- 53at91sam9_wdt: 54heartbeat: Watchdog heartbeats in seconds. (default = 15) 55nowayout: Watchdog cannot be stopped once started 56 (default=kernel config parameter) 57------------------------------------------------- 58bcm47xx_wdt: 59wdt_time: Watchdog time in seconds. (default=30) 60nowayout: Watchdog cannot be stopped once started 61 (default=kernel config parameter) 62------------------------------------------------- 63bfin_wdt: 64timeout: Watchdog timeout in seconds. (1<=timeout<=((2^32)/SCLK), default=20) 65nowayout: Watchdog cannot be stopped once started 66 (default=kernel config parameter) 67------------------------------------------------- 68coh901327_wdt: 69margin: Watchdog margin in seconds (default 60s) 70------------------------------------------------- 71cpu5wdt: 72port: base address of watchdog card, default is 0x91 73verbose: be verbose, default is 0 (no) 74ticks: count down ticks, default is 10000 75------------------------------------------------- 76cpwd: 77wd0_timeout: Default watchdog0 timeout in 1/10secs 78wd1_timeout: Default watchdog1 timeout in 1/10secs 79wd2_timeout: Default watchdog2 timeout in 1/10secs 80------------------------------------------------- 81da9052wdt: 82timeout: Watchdog timeout in seconds. 2<= timeout <=131, default=2.048s 83nowayout: Watchdog cannot be stopped once started 84 (default=kernel config parameter) 85------------------------------------------------- 86davinci_wdt: 87heartbeat: Watchdog heartbeat period in seconds from 1 to 600, default 60 88------------------------------------------------- 89ebc-c384_wdt: 90timeout: Watchdog timeout in seconds. (1<=timeout<=15300, default=60) 91nowayout: Watchdog cannot be stopped once started 92------------------------------------------------- 93ep93xx_wdt: 94nowayout: Watchdog cannot be stopped once started 95timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=TBD) 96------------------------------------------------- 97eurotechwdt: 98nowayout: Watchdog cannot be stopped once started 99 (default=kernel config parameter) 100io: Eurotech WDT io port (default=0x3f0) 101irq: Eurotech WDT irq (default=10) 102ev: Eurotech WDT event type (default is `int') 103------------------------------------------------- 104gef_wdt: 105nowayout: Watchdog cannot be stopped once started 106 (default=kernel config parameter) 107------------------------------------------------- 108geodewdt: 109timeout: Watchdog timeout in seconds. 1<= timeout <=131, default=60. 110nowayout: Watchdog cannot be stopped once started 111 (default=kernel config parameter) 112------------------------------------------------- 113i6300esb: 114heartbeat: Watchdog heartbeat in seconds. (1<heartbeat<2046, default=30) 115nowayout: Watchdog cannot be stopped once started 116 (default=kernel config parameter) 117------------------------------------------------- 118iTCO_wdt: 119heartbeat: Watchdog heartbeat in seconds. 120 (2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=30) 121nowayout: Watchdog cannot be stopped once started 122 (default=kernel config parameter) 123------------------------------------------------- 124iTCO_vendor_support: 125vendorsupport: iTCO vendor specific support mode, default=0 (none), 126 1=SuperMicro Pent3, 2=SuperMicro Pent4+, 911=Broken SMI BIOS 127------------------------------------------------- 128ib700wdt: 129timeout: Watchdog timeout in seconds. 0<= timeout <=30, default=30. 130nowayout: Watchdog cannot be stopped once started 131 (default=kernel config parameter) 132------------------------------------------------- 133ibmasr: 134nowayout: Watchdog cannot be stopped once started 135 (default=kernel config parameter) 136------------------------------------------------- 137imx2_wdt: 138timeout: Watchdog timeout in seconds (default 60 s) 139nowayout: Watchdog cannot be stopped once started 140 (default=kernel config parameter) 141------------------------------------------------- 142indydog: 143nowayout: Watchdog cannot be stopped once started 144 (default=kernel config parameter) 145------------------------------------------------- 146iop_wdt: 147nowayout: Watchdog cannot be stopped once started 148 (default=kernel config parameter) 149------------------------------------------------- 150it8712f_wdt: 151margin: Watchdog margin in seconds (default 60) 152nowayout: Disable watchdog shutdown on close 153 (default=kernel config parameter) 154------------------------------------------------- 155it87_wdt: 156nogameport: Forbid the activation of game port, default=0 157nocir: Forbid the use of CIR (workaround for some buggy setups); set to 1 if 158system resets despite watchdog daemon running, default=0 159exclusive: Watchdog exclusive device open, default=1 160timeout: Watchdog timeout in seconds, default=60 161testmode: Watchdog test mode (1 = no reboot), default=0 162nowayout: Watchdog cannot be stopped once started 163 (default=kernel config parameter) 164------------------------------------------------- 165ixp2000_wdt: 166heartbeat: Watchdog heartbeat in seconds (default 60s) 167nowayout: Watchdog cannot be stopped once started 168 (default=kernel config parameter) 169------------------------------------------------- 170ixp4xx_wdt: 171heartbeat: Watchdog heartbeat in seconds (default 60s) 172nowayout: Watchdog cannot be stopped once started 173 (default=kernel config parameter) 174------------------------------------------------- 175ks8695_wdt: 176wdt_time: Watchdog time in seconds. (default=5) 177nowayout: Watchdog cannot be stopped once started 178 (default=kernel config parameter) 179------------------------------------------------- 180machzwd: 181nowayout: Watchdog cannot be stopped once started 182 (default=kernel config parameter) 183action: after watchdog resets, generate: 184 0 = RESET(*) 1 = SMI 2 = NMI 3 = SCI 185------------------------------------------------- 186max63xx_wdt: 187heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 60 188nowayout: Watchdog cannot be stopped once started 189 (default=kernel config parameter) 190nodelay: Force selection of a timeout setting without initial delay 191 (max6373/74 only, default=0) 192------------------------------------------------- 193mixcomwd: 194nowayout: Watchdog cannot be stopped once started 195 (default=kernel config parameter) 196------------------------------------------------- 197mpc8xxx_wdt: 198timeout: Watchdog timeout in ticks. (0<timeout<65536, default=65535) 199reset: Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset 200nowayout: Watchdog cannot be stopped once started 201 (default=kernel config parameter) 202------------------------------------------------- 203mv64x60_wdt: 204nowayout: Watchdog cannot be stopped once started 205 (default=kernel config parameter) 206------------------------------------------------- 207ni903x_wdt: 208timeout: Initial watchdog timeout in seconds (0<timeout<516, default=60) 209nowayout: Watchdog cannot be stopped once started 210 (default=kernel config parameter) 211------------------------------------------------- 212nuc900_wdt: 213heartbeat: Watchdog heartbeats in seconds. 214 (default = 15) 215nowayout: Watchdog cannot be stopped once started 216 (default=kernel config parameter) 217------------------------------------------------- 218omap_wdt: 219timer_margin: initial watchdog timeout (in seconds) 220early_enable: Watchdog is started on module insertion (default=0 221nowayout: Watchdog cannot be stopped once started 222 (default=kernel config parameter) 223------------------------------------------------- 224orion_wdt: 225heartbeat: Initial watchdog heartbeat in seconds 226nowayout: Watchdog cannot be stopped once started 227 (default=kernel config parameter) 228------------------------------------------------- 229pc87413_wdt: 230io: pc87413 WDT I/O port (default: io). 231timeout: Watchdog timeout in minutes (default=timeout). 232nowayout: Watchdog cannot be stopped once started 233 (default=kernel config parameter) 234------------------------------------------------- 235pika_wdt: 236heartbeat: Watchdog heartbeats in seconds. (default = 15) 237nowayout: Watchdog cannot be stopped once started 238 (default=kernel config parameter) 239------------------------------------------------- 240pnx4008_wdt: 241heartbeat: Watchdog heartbeat period in seconds from 1 to 60, default 19 242nowayout: Set to 1 to keep watchdog running after device release 243------------------------------------------------- 244pnx833x_wdt: 245timeout: Watchdog timeout in Mhz. (68Mhz clock), default=2040000000 (30 seconds) 246nowayout: Watchdog cannot be stopped once started 247 (default=kernel config parameter) 248start_enabled: Watchdog is started on module insertion (default=1) 249------------------------------------------------- 250rc32434_wdt: 251timeout: Watchdog timeout value, in seconds (default=20) 252nowayout: Watchdog cannot be stopped once started 253 (default=kernel config parameter) 254------------------------------------------------- 255riowd: 256riowd_timeout: Watchdog timeout in minutes (default=1) 257------------------------------------------------- 258s3c2410_wdt: 259tmr_margin: Watchdog tmr_margin in seconds. (default=15) 260tmr_atboot: Watchdog is started at boot time if set to 1, default=0 261nowayout: Watchdog cannot be stopped once started 262 (default=kernel config parameter) 263soft_noboot: Watchdog action, set to 1 to ignore reboots, 0 to reboot 264debug: Watchdog debug, set to >1 for debug, (default 0) 265------------------------------------------------- 266sa1100_wdt: 267margin: Watchdog margin in seconds (default 60s) 268------------------------------------------------- 269sb_wdog: 270timeout: Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs) 271------------------------------------------------- 272sbc60xxwdt: 273wdt_stop: SBC60xx WDT 'stop' io port (default 0x45) 274wdt_start: SBC60xx WDT 'start' io port (default 0x443) 275timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30) 276nowayout: Watchdog cannot be stopped once started 277 (default=kernel config parameter) 278------------------------------------------------- 279sbc7240_wdt: 280timeout: Watchdog timeout in seconds. (1<=timeout<=255, default=30) 281nowayout: Disable watchdog when closing device file 282------------------------------------------------- 283sbc8360: 284timeout: Index into timeout table (0-63) (default=27 (60s)) 285nowayout: Watchdog cannot be stopped once started 286 (default=kernel config parameter) 287------------------------------------------------- 288sbc_epx_c3: 289nowayout: Watchdog cannot be stopped once started 290 (default=kernel config parameter) 291------------------------------------------------- 292sbc_fitpc2_wdt: 293margin: Watchdog margin in seconds (default 60s) 294nowayout: Watchdog cannot be stopped once started 295------------------------------------------------- 296sbsa_gwdt: 297timeout: Watchdog timeout in seconds. (default 10s) 298action: Watchdog action at the first stage timeout, 299 set to 0 to ignore, 1 to panic. (default=0) 300nowayout: Watchdog cannot be stopped once started 301 (default=kernel config parameter) 302------------------------------------------------- 303sc1200wdt: 304isapnp: When set to 0 driver ISA PnP support will be disabled (default=1) 305io: io port 306timeout: range is 0-255 minutes, default is 1 307nowayout: Watchdog cannot be stopped once started 308 (default=kernel config parameter) 309------------------------------------------------- 310sc520_wdt: 311timeout: Watchdog timeout in seconds. (1 <= timeout <= 3600, default=30) 312nowayout: Watchdog cannot be stopped once started 313 (default=kernel config parameter) 314------------------------------------------------- 315sch311x_wdt: 316force_id: Override the detected device ID 317therm_trip: Should a ThermTrip trigger the reset generator 318timeout: Watchdog timeout in seconds. 1<= timeout <=15300, default=60 319nowayout: Watchdog cannot be stopped once started 320 (default=kernel config parameter) 321------------------------------------------------- 322scx200_wdt: 323margin: Watchdog margin in seconds 324nowayout: Disable watchdog shutdown on close 325------------------------------------------------- 326shwdt: 327clock_division_ratio: Clock division ratio. Valid ranges are from 0x5 (1.31ms) 328 to 0x7 (5.25ms). (default=7) 329heartbeat: Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default=30 330nowayout: Watchdog cannot be stopped once started 331 (default=kernel config parameter) 332------------------------------------------------- 333smsc37b787_wdt: 334timeout: range is 1-255 units, default is 60 335nowayout: Watchdog cannot be stopped once started 336 (default=kernel config parameter) 337------------------------------------------------- 338softdog: 339soft_margin: Watchdog soft_margin in seconds. 340 (0 < soft_margin < 65536, default=60) 341nowayout: Watchdog cannot be stopped once started 342 (default=kernel config parameter) 343soft_noboot: Softdog action, set to 1 to ignore reboots, 0 to reboot 344 (default=0) 345------------------------------------------------- 346stmp3xxx_wdt: 347heartbeat: Watchdog heartbeat period in seconds from 1 to 4194304, default 19 348------------------------------------------------- 349tegra_wdt: 350heartbeat: Watchdog heartbeats in seconds. (default = 120) 351nowayout: Watchdog cannot be stopped once started 352 (default=kernel config parameter) 353------------------------------------------------- 354ts72xx_wdt: 355timeout: Watchdog timeout in seconds. (1 <= timeout <= 8, default=8) 356nowayout: Disable watchdog shutdown on close 357------------------------------------------------- 358twl4030_wdt: 359nowayout: Watchdog cannot be stopped once started 360 (default=kernel config parameter) 361------------------------------------------------- 362txx9wdt: 363timeout: Watchdog timeout in seconds. (0<timeout<N, default=60) 364nowayout: Watchdog cannot be stopped once started 365 (default=kernel config parameter) 366------------------------------------------------- 367w83627hf_wdt: 368wdt_io: w83627hf/thf WDT io port (default 0x2E) 369timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60. 370nowayout: Watchdog cannot be stopped once started 371 (default=kernel config parameter) 372------------------------------------------------- 373w83697hf_wdt: 374wdt_io: w83697hf/hg WDT io port (default 0x2e, 0 = autodetect) 375timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60) 376nowayout: Watchdog cannot be stopped once started 377 (default=kernel config parameter) 378early_disable: Watchdog gets disabled at boot time (default=1) 379------------------------------------------------- 380w83697ug_wdt: 381wdt_io: w83697ug/uf WDT io port (default 0x2e) 382timeout: Watchdog timeout in seconds. 1<= timeout <=255 (default=60) 383nowayout: Watchdog cannot be stopped once started 384 (default=kernel config parameter) 385------------------------------------------------- 386w83877f_wdt: 387timeout: Watchdog timeout in seconds. (1<=timeout<=3600, default=30) 388nowayout: Watchdog cannot be stopped once started 389 (default=kernel config parameter) 390------------------------------------------------- 391w83977f_wdt: 392timeout: Watchdog timeout in seconds (15..7635), default=45) 393testmode: Watchdog testmode (1 = no reboot), default=0 394nowayout: Watchdog cannot be stopped once started 395 (default=kernel config parameter) 396------------------------------------------------- 397wafer5823wdt: 398timeout: Watchdog timeout in seconds. 1 <= timeout <= 255, default=60. 399nowayout: Watchdog cannot be stopped once started 400 (default=kernel config parameter) 401------------------------------------------------- 402wdt285: 403soft_margin: Watchdog timeout in seconds (default=60) 404------------------------------------------------- 405wdt977: 406timeout: Watchdog timeout in seconds (60..15300, default=60) 407testmode: Watchdog testmode (1 = no reboot), default=0 408nowayout: Watchdog cannot be stopped once started 409 (default=kernel config parameter) 410------------------------------------------------- 411wm831x_wdt: 412nowayout: Watchdog cannot be stopped once started 413 (default=kernel config parameter) 414------------------------------------------------- 415wm8350_wdt: 416nowayout: Watchdog cannot be stopped once started 417 (default=kernel config parameter) 418------------------------------------------------- 419sun4v_wdt: 420timeout_ms: Watchdog timeout in milliseconds 1..180000, default=60000) 421nowayout: Watchdog cannot be stopped once started 422------------------------------------------------- 423