I am trying to figure how to enable the watchdog using jetpack 4.6.
I have typed dmesg but nothing in the logs.
dmesg | grep -i watchdog
dmesg | grep -i wdt
I have not modified the image. just download and installed on a sd card.
My tegra release is:
# R32 (release), REVISION: 6.1, GCID: 27863751, BOARD: t210ref, EABI: aarch64, DATE: Mon Jul 26 19:20:30 UTC 2021
It’s default enable and default is 120 seconds to reboot the system.
Have verify by below steps.
There is a config variable CONFIG_PANIC_TIMEOUT which decides the action taken after panic happened.
- If it is non-zero then it will re-boot after that many seconds when panic happened.
- If it is zero then it will not reboot and WDT will get triggered.
The value can be change form defconfig and runtime via sysfs.
On defcofnig, we have CONFIG_PANIC_TIMEOUT=5
root@t186_int:/proc/sys/kernel # cat panic 5
If you want to WDT reboot after panic then make it zero
root@t186_int:/proc/sys/kernel # echo 0 > panic root@t186_int:/proc/sys/kernel # cat panic 0
Now crash the system using
It will either reboot or WDT reset based on panic value.
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