My project which brings the above parts together into a draft flake-based Nixos module.
The module sets up runs a simple RTSP broadcasting server on a RaspberryPi 4B board, offering few or no configurable options. I do not currently plan to enhance anything or make tests with other boards. Still, I hope that it might become a reference example for other programmers.
Hi @aou . Sorry I missed your question. Indeed, the link you provided points to a promising dts source. A good thing to do would be to try removing the binary patch I used and including this source as described here.