i.MX8 board hang on watchdog time out.
I have custom i.MX8 board ,
When I write below command on board, it got hanged and I need to do power cycle to make it functional again.
command
echo 1 > /dev/watchdog.
[Kernel configuration: imx2+ and imx8 watchdog driver are enable from kernel configuration.]
Hi Amit
to have reliable wdog reset it is necessary to implement schematic
solution in such way, that this signal behaved as RESET SWITCH,
shortly removing all power supplies from board. For example
on i.MX8QM board SCU_WDOG_OUT i.MX8QM connected to
U23A, U10A (PC33PF8100) PMIC_WDOG_IN and acts as
"RESET SWITCH".
Best regards
igor
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