Rock 3A Android 11, UART and CAN

Hi, everyone!
I need to enable one of any UART in Android 11. How can I do this? I’m new to Android assembly, could you tell me which way to go? Or maybe you can give step-by-step instructions. In the next step, I need to enable CAN. If there are any differences in UART and CAN startup, I will be very glad of your help to me.
Thanks!