AnsweredAssumed Answered

iMX6 Watchdog active, but resets irregularly in Linux

Question asked by Erez Steinberg on Sep 7, 2015
Latest reply on Aug 5, 2016 by Bandaru Lavanya

Hello all,

 

On a system with iMX6DL, WDOG1 is activated in U-Boot.

If U-Boot hangs, or Linux hangs during boot, the watchdog resets the system as expected.

 

However, if Linux boots, the watchdog does not cause a system reset on time.   It may take minutes, and then at some random time the system would reset.

 

Looking at the watchdog registers:

   Memory mapped at address 0x76f53000.

   Read at address  0x020BC000 (0x76f53000): 0x779F

 

Timeout is set to 60 seconds, and watchdog is enabled.

 

What might be the reason for such behavior?

Any suggestions how to debug this?

 

 

Regards,

Erez

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