<div dir="ltr"><div><div><div>Hi,<br><br></div>A bit of investigation with Dr. Google found that the beagleboard XM
boards have a known issue with the omap_wdt driver. Instead of
rebooting the board it holds it in reset. The easy solution is to not
use the omap_wdt watchdog timer driver but rather the TLW4030 watchdog timer driver. Looking
at the latest pickle Linux kernel I see there are currently 4 watchdog timer
drivers built into the kernel including the working TLW4030. Since it
loads after the omap_wdt timer it doesn't get used. The TLW4030
reportedly works on all version of the beagleboard.<br><br>lib/modules/2.6.33-500-omap/kernel/drivers/watchdog/softdog.ko<br>lib/modules/2.6.33-500-omap/kernel/drivers/watchdog/twl4030_wdt.ko<br>lib/modules/2.6.33-500-omap/kernel/drivers/watchdog/omap_wdt.ko<br>
lib/modules/2.6.33-500-omap/kernel/drivers/watchdog/pcwd_usb.ko<br>
<br></div><div>Therefore would it be possible to get pickle rebuilt
without the omap_wdt built in? That should then cause the twl4030
driver to be used whenever the /dev/watchdog file is written to and
hopefully solve the problem. Anyone wanting to use the timer would
still need to install the watchdog user space program as I don't think
it makes sense to include that in pickle.<br>
<br>A quick way to test the watchdog timer is to just cat /dev/watchdog
and wait a minute. Current XM boards with the omap_wdt timer will crash
after a minute. Newer beagleboards will restart. If my theory is correct after removing the omap_wdt driver all boards will restart<br></div><div><br><br></div>
<div>Thanks<br>Mike<br></div><div><br><br></div>Here is reference where someone did the research on the watchdog timer: <a href="http://gumstix.8.x6.nabble.com/Watchdog-timer-not-working-in-gumstix-overo-td812498.html" target="_blank">http://gumstix.8.x6.nabble.com/Watchdog-timer-not-working-in-gumstix-overo-td812498.html</a> Look near the bottom with the solution.<br>
</div>I also saw references on the TI site and perhaps the omap_wdt driver has been updated as well since these posts are old.</div>