Watch Dog Timer Disable in kernel

raja V

Hi,

I have found that during kernel boot, watch dog timer is getting disabled in omap_wdt_probe() function.

We are enabling watchdog timer in boot loader and want to re configure and kick the watchdog timer only at user application.

Can I comment the function "omap_wdt_disable(wdev);" in omap_wdt.c file so that kernel will not disable the watchdog timer. I have configured watchdog timer in boot loader to 2.5mins so that it will not cause reset during boot.

Is this change cause any issue to watchdog timer functionality?

Thanks,

Regards,

Raja.

over 12 years ago

0 Tor Krill over 12 years ago

Prodigy 120 points

Hi Raja,

I'm having the exact same problem with the disabled wdt. Did you ever solve this issue? Commenting the above mentioned line does not seem to fix the problem for me.

/Tor

0 raja V over 12 years ago in reply to Tor Krill

Intellectual 360 points

Hi Tor,

It worked for me. I could see watchdog still running even after loading file system.

I have commented omap_wdt_disable() function call in omap_wdt_probe() function.

What is your kernel bootup log says about watchdog?

Regards,

Raja.

0 Tor Krill over 12 years ago in reply to raja V

Prodigy 120 points

Hi Raja,

Thanks for taking the time to answer me :) Unfortunately it was not enough for me to comment out the call to omap_wdt_disable function. You can see what i had to do in this thread

am335x watchdog disabled by Linux boot

(http://e2e.ti.com/support/arm/sitara_arm/f/791/t/287281.aspx)

Could it be that you have pm runtime disabled? Because then it most likely would be enough to only comment out the function call mentioned above.

Regards,

/Tor

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Watch Dog Timer Disable in kernel

am335x watchdog disabled by Linux boot