AnsweredAssumed Answered

i.MX28 WDT reset rarely failed

Question asked by torus1000 on Oct 22, 2014
Latest reply on Nov 26, 2014 by Yixing Kong

Hi,
I tested i.MX28 WDT reset then I found boot failure around once per 500~1000 times.

 

Observed conditions were as following:
     * Kept on supply 5V to VDD5V
     * Internal LDO outputs droped 1.5 to 1.1@VDDD, 1.5 to1.1V@VDDA and 3.3 to 3.1V@VDDIO.
     * No charactor or no error message sent to the console.
     * GPIO kept initial state

 

Can anyone explain what happend?  

 

I couldn't find such errata. It looks stack at on the way to boot up.
In fact some articles in community reported WDT issue via Power down such as
http://lists.infradead.org/pipermail/barebox/2013-February/012839.html

 

Will anyone please let me know how to avoid this?

 

Thanks.

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