Recently I’ve started working on Rock 5B and I’ve installed Ubuntu image which is downloaded from official site “rock-5b-ubuntu-focal-server-arm64-20220919-0839-gpt.img.xz” .
I am trying to activate UART’s but I struck in between the development. Previously I was working on Rock 3A, there it was easy and got useful information from official site ( https://wiki.radxa.com/Device-tree-overlays ) regarding the overlays.
But in Rock 5B I can find only GPIO details, overlays were not available and don’t know how to activate the UART’s. Here there is no /boot/uEnv.txt also.
Could you please help me with this issue.