I’m glad to see you’re still fighting! We’re working in the background to try and work out your Beaglebone Green issue with CANbus, but moving over to a more capable device might be a good step anyway.
So to this issue, you can use our special configurable variables to set DT Overlays:
This page gives some guidance for the overlay you’re trying to use:
Hope this helps. Keep going, we’ll get you sorted!