Regarding DM8148 watchdog timer

nandish mj

Hi,

I am using DM8148 custom board and DVRRDK_03.50.00.05.

I have implemented watchdog timer as suggested in "http://processors.wiki.ti.com/index.php/TI81XX_PSP_WDT_Driver_User_Guide"

I am opening the /dev/watchdog with an interval of 5sec and writing into it at every 4sec.

If there is no write, system reboots by itself.

Problem is, if my application crashes due to say segmentation fault, system is not rebooting.

Ideally it should have rebooted?

My primary goal is to reboot the system, if my application crashes/hangs.

over 9 years ago

0 Margarita Gashova over 9 years ago

TI__Guru* 80190 points

Hello,

You could check this e2e topic:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/293102/1021959

Best Regards,
Margarita

0 Pavel Botev over 9 years ago

TI__Guru**** 170625 points

Nandish,

When you get segmentation fault in linux user space application, the process (application) is killed by the linux kernel. See the below e2e thread how to workaround this.

e2e.ti.com/.../358954

Best regards,
Pavel

0 nandish mj over 9 years ago in reply to Pavel Botev

Intellectual 420 points

Hi Pavel,

Thanks,
By enabling "WATCHDOG_NOWAYOUT" in kernal, solved the problem.

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Regarding DM8148 watchdog timer