raspberry pi BCM2708 hardware watchdog

[Andreas Schwarz]

Hi,

the BCM2708 SoC contain a hardware watchdog, using it, would be a good solution
for the people which are running a remote rpi 24/7 to avoid these sudden system 
freezes.

The watchdog (bcmwd0) is found when booting, but I'm not able to use it with the 
watchdogd (which is using /dev/fido to communicate with the watchdog). Seems
that something is still missing. Any ideas?

root at pizelot:~ # dmesg | grep Watchdog
bcmwd0: <BCM2708/2835 Watchdog> mem 0x2010001c-0x20100027 on simplebus0

root at pizelot:~ # /etc/rc.d/watchdogd start
Starting watchdogd.
watchdogd: watchdog_patpat failed: Operation not supported
watchdogd: patting the dog: Operation not supported
/etc/rc.d/watchdogd: WARNING: failed to start watchdogd

best regards,
Andreas