How to obtain UART logs on Jetson Nano production modules, over UART 2

Hi JerryChang,

Could you perhaps help me with/advise me regarding our main issue at: Jetson Nano production module does not boot on custom carrier board, but does so on auvidea's.

The issue on this forum was to enable a solution for the main issue stated in the above link. So we can move the main issue. I posted my question over there but have not got a response yet.