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| author | Randy Dunlap <randy.dunlap@oracle.com> | 2010-05-03 22:42:52 +0400 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2010-05-25 13:05:34 +0400 |
| commit | 4724ba575ea73431aba8a48be6f5a382c470418d (patch) | |
| tree | 7d3a6fdabfede731cdd040072768b66f170fc805 /Documentation/watchdog/wdt.txt | |
| parent | 8b18085a92c72fe1754481890e9dfc600e736b1f (diff) | |
| download | linux-4724ba575ea73431aba8a48be6f5a382c470418d.tar.xz | |
watchdog: update/improve/consolidate watchdog driver
Move the limited watchdog driver help from kernel-parameters.txt
to Documentation/watchdog/watchdog-parameters.txt and add info to it
for all watchdog drivers except the ones that have driver-specific
files already.
Correct minor comments and MODULE_PARM_DESC() text in 2 places.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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 - |