Does the Raspberry Pi 4 have a hardware watchdog timer like the RPi3 does? If it does, which kernel module should I load in order to use it?
I'm running Raspbian Buster, kernel 4.19.93-v7l+
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Do NOT attempt to load ANY modules.
config.txt and Device Tree will load the module.
NOTE you also need to enable the watchdog service. See https://raspberrypi.stackexchange.com/a/68332/8697
Ok, after some testing it seems like the watchdog module is loaded by default.
To check for yourself, see if
This is the guide what worked for me.