I cant stop Watchdog - iMX6

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I cant stop Watchdog - iMX6

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karthikeyanraju
Contributor III

Hi all,

I am using Yocto bsp version 4.1.15_2.0.0 . I have enabled watchdog in u-boot. I am trying to stop the watchdog from filesystem using application.  I have already done the below tests,

Using application - ioctl functions like alive ,watchdog discard and closing the watchdog

Using memtool  -  Extending the WD time in register, but it did not worked . Can anyone help me to solve this issue ?

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karthikeyanraju
Contributor III

Hi igorpadykov,

Thanks for your quick response.

Is there any way to make u-boot watchdog alive ? I have tried watchdog apis to keep alive using application, But doesnt worked. I want to keep my watchdog alive...  Can you give suggestion.

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Karthikeyan 

once started, watchdog can not be disabled as some bits like WDE Watchdog Enable,

are write one once only bits. This is described in sect.70.7.1 Watchdog Control Register

(WDOGx_WCR) i.MX6DQ Reference Manual

http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6DQRM.pdf

Best regards
igor
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