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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 11:40:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 11:40:40 -0700 |
| commit | 51e618c357b39597b474165c5d17067afe8f16a6 (patch) | |
| tree | cbff778a0cc10732958384d24a26e5fde08867c5 /Documentation/watchdog/wdt.txt | |
| parent | f16a5e347835c6a0ba958535cf6e6c89d50463b8 (diff) | |
| parent | bb2fd8a844d3a9209599b5fb694b30ac46a56ef0 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
watchdog: Driver for the watchdog timer on Freescale IMX2 (and later) processors.
watchdog: s3c2410_wdt - Fix on handling of the request_mem_region fail
watchdog: s3c2410_wdt - Add extra option to include watchdog for Samsung SoCs
iTCO_wdt: fix TCO V1 timeout values and limits
watchdog: twl4030_wdt: Disable watchdog during probing
watchdog: update/improve/consolidate watchdog driver
watchdog: booke_wdt: fix ioctl status flags
watchdog: fix several MODULE_PARM_DESC strings
watchdog: bfin: use new common Blackfin watchdog header
Diffstat (limited to 'Documentation/watchdog/wdt.txt')
| -rw-r--r-- | Documentation/watchdog/wdt.txt | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/Documentation/watchdog/wdt.txt b/Documentation/watchdog/wdt.txt index 03fd756d976d..061c2e35384f 100644 --- a/Documentation/watchdog/wdt.txt +++ b/Documentation/watchdog/wdt.txt @@ -14,14 +14,22 @@ reboot will depend on the state of the machines and interrupts. The hardware boards physically pull the machine down off their own onboard timers and will reboot from almost anything. -A second temperature monitoring interface is available on the WDT501P cards +A second temperature monitoring interface is available on the WDT501P cards. This provides /dev/temperature. This is the machine internal temperature in degrees Fahrenheit. Each read returns a single byte giving the temperature. The third interface logs kernel messages on additional alert events. -The wdt card cannot be safely probed for. Instead you need to pass -wdt=ioaddr,irq as a boot parameter - eg "wdt=0x240,11". +The ICS ISA-bus wdt card cannot be safely probed for. Instead you need to +pass IO address and IRQ boot parameters. E.g.: + wdt.io=0x240 wdt.irq=11 + +Other "wdt" driver parameters are: + heartbeat Watchdog heartbeat in seconds (default 60) + nowayout Watchdog cannot be stopped once started (kernel + build parameter) + tachometer WDT501-P Fan Tachometer support (0=disable, default=0) + type WDT501-P Card type (500 or 501, default=500) Features -------- @@ -40,4 +48,3 @@ Minor numbers are however allocated for it. Example Watchdog Driver: see Documentation/watchdog/src/watchdog-simple.c - |