We are using a Jetson TX2 NX with a custom carrier board and I am attempting to enable ttyS2 (UART3/UARTC) to be used for communication with a microcontroller. I enabled it in the device tree and I was able to transmit on it with no issue. I was however having errors on the receive side and I saw TX2 NX RS232 Communication Problem. I tried to follow these steps, but when I flash the bpmp-fw-dtb, it causes a kernel panic
I also attempted to just change the port from 3 to 7, but it caused the same issue. I tried both the partial flash recommended in the 232 question and a full build & flash.
I am wondering what caused this lockup, and how to disable/move the bpmp terminal without causing boot issues