Documentation/watchdog/watchdog-parameters.txt

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