Disabling Watchdog for Kernel Debugging

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
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1

Hi,

Is there a way to disable watchdog timer/reset on Jetson TX2? I was debugging the kernel module I have made and if I waited too long (ex. examining stack traces, symbols, registers), TX2 resets and this makes it almost impossible to debug my module. Any help is appreciated!

I tried to disable it by running the following command:

echo 1 > /sys/kernel/debug/30c0000.watchdog/disable_dbg_reset
echo 1 > /sys/kernel/debug/30c0000.watchdog/disable_por_reset

But this throws the following error:

-bash: echo: write error: Invalid argument
3

Try reference to below to implement user space APP for it.
Or disable the kernel config to rebuild the kernel.

Thanks

4

Try reference to below to implement user space APP for it.

  • Can you link to a reference for me to see?

disable the kernel config to rebuild the kernel

  • Completely disabling it makes the debugger not working…
5

Have a check below topic.

6

I already removed CONFIG_WATCHDOG_NOWAYOUT from my kernel config but the device still resets itself if you sit in the debugger for a long duration…

7

Write the APP to disable the WDT by IOCTL.

Thanks

9

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