ROCK Pi 4
Supported ROCK Pi 4 boards
There are several versions of the ROCK Pi 4 board, each with 1GB, 2GB or 4GB RAM options. OP-TEE has been tested and is known to work with a Rock Pi 4 Model B OP1 4GB. Other variants will likely work too.
The console can be accessed using a USB adapter connected to the board as described in the serial console documentation.
Just follow the “Get and build the solution” as described in
build. To flash the board you will need a USB type A to type A cable.
make flash step will tell you how to connect the cable and use the