Utilizing 25W PoE+ Hat's Fan on Rock 5C Lite

[Uko]

Is there any trick to make use of the integrated fan on Radxa 25W PoE Hat?

 

I'm using

4GB Radxa Rock 5C Lite

Armbian_25.5.1_Rock-5c_bookworm_vendor_6.1.115_minimal

 

Some guides mention that one should enable an overlay. I didn't find any relevant overlays in armbian-config. In the Radxa repo I found rock-5a-radxa-25w-poe.dts which specifies that it's also compatible with Rock 5C. I've compiled it and enabled it, but by default the fan is not spinning (on high temps) and I'm not sure how to investigate that. 

 

Also, does it matter that I have 5C Lite? As it has another chip: RK3582

Edited 10 hours ago by Uko