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authorRandy Dunlap <randy.dunlap@oracle.com>2010-05-03 22:42:52 +0400
committerWim Van Sebroeck <wim@iguana.be>2010-05-25 13:05:34 +0400
commit4724ba575ea73431aba8a48be6f5a382c470418d (patch)
tree7d3a6fdabfede731cdd040072768b66f170fc805 /Documentation/watchdog/wdt.txt
parent8b18085a92c72fe1754481890e9dfc600e736b1f (diff)
downloadlinux-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.txt15
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
-