how to use internal wdt ?

[ilyyxfe]

hello

i use my imx6sll customized board with pfuze100

and because i have not add the reset ic,I suspend the wdog_b pin.

i check the source, and try to modify the dts.

delete the "fsl,ext-reset-output".

now i use the watchdog,when time out, it will reset only once.

but next time ,when time out, the system can not reset. it seems that the system halted(nothing i can do but power on again)...

it can reset normally in the evaluation BSP.

I wonder this case is because of not adding the reset circuit so that system can not work stablely?

or i do not configure the kernel correctly?

pls give me some advice.

best regards

zhang

[igorpadykov]

Hi zhang

>I wonder this case is because of not adding the reset circuit so that system can not work stablely?

yes this is correct understanding.

Nxp encourages customers to remove power (voltage source) to all components
on the board in the event of a processor reset as it is done on nxp reference boards.

Otherwise you should analyze all board components which ones prevent normal boot after reset.

Best regards
igor
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