Watchdog is is halting instead of rebooting on Buildroot
Posted: Fri Oct 31, 2025 11:26 am
Hello,
We created a vanilla Buildroot Image for Nano Pi R2S Plus. Then we tried to activate the watchdog by adding a linux config fragment:
```
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_CORE=y
CONFIG_DW_WATCHDOG=y
```
When then writing a byte to "/dev/watchdog0" the watchdog gets activated and 30 seconds later (when the watchdog is expected to be triggered) the system halts and does not react to any keyboard entry (instead of rebooting).
By the way: I did my tests via the serial debug console.
We created a vanilla Buildroot Image for Nano Pi R2S Plus. Then we tried to activate the watchdog by adding a linux config fragment:
```
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_CORE=y
CONFIG_DW_WATCHDOG=y
```
When then writing a byte to "/dev/watchdog0" the watchdog gets activated and 30 seconds later (when the watchdog is expected to be triggered) the system halts and does not react to any keyboard entry (instead of rebooting).
By the way: I did my tests via the serial debug console.