According to /boot/firmware/overlays/README it's enabled by default:
I think that's been the default for quite some years now.Name: <The base DTB>
Info: Configures the base Raspberry Pi hardware
Load: <loaded automatically>
Params:
[...]
watchdog Set to "off" to disable the hardware watchdog
(default "on")
Statistics: Posted by thagrol — Fri Feb 13, 2026 11:48 pm