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IMX: Add external watchdog reset

Question asked by Ilies CHERGUI on Feb 2, 2017

Hi guys,

I’m working on the Linux kernel version 3.14.52 for the target imx6qdl, I need a support from you about Adding an external watchdog reset.

I applied the patch:, but I got a strange behavior when I tried to test the patch.

I’ve remarked that the reset cause of the reboot from the u-boot traces doesn’t change (I got POR all times).


I’ve used the following commands to test (please see the files attached):

1-      reboot

2-      echo c > /proc/sysrq-trigger

By using the second command, I think that I will get WDOG in the reset cause, unfortunately no.


Could you please guys give a support about that ?



Best regards,


Embedded low level development engineer

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