Hi Sebastian, On 26/03/2015 09:02, Sebastian Andrzej Siewior wrote: > On 03/25/2015 04:53 PM, Stefano Babic wrote: >> On 03/03/2015 17:45, Sebastian Andrzej Siewior wrote: >>> with WCR_WDW set, the watchdog won't trigger if we bootet linux and idle >>> around while the watchdog is not triggered. It seems the timer makes >>> progress very slowly if at all. I managed to remain 20minutes alive >>> while the timeout was set to 60secs. It reboots within 60secs if I start >>> a busyloop in userland (something like "while (1) { }"). >>> >>> While I don't see a reason why the WDT should not be running while the >>> CPU is in idle, I'm dropping this bit. >>> >>> Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de> >>> --- >> >> Applied to u-boot-imx, thanks ! > > Thanks. What just came to mind: In case you do suspend-to-mem. Would > the watchdog trigger then? I am not sure and I have no way to test…
I have also not tested, but in my understanding this is ruled by the WDZST. This is also a write-once bit, and suspend the watchdog timer during low power modes. Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sba...@denx.de ===================================================================== _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot