rockPi 4C rpi offical display

I m using rockpi 4C
I want to use the Rpi official display when i change in the boot config file and restart. the device it’s not starting again everything is the blackout.
Can anyone suggest to me how I do it. ?

For rk3399, there is only two display controllers(VOPB and VOPL, video output processor big and little), HDMI, DP and MIPI, you can only choose two at one time, by default, HDMI is VOPB and DP is VOPL, this can be configured in device tree. For your question, the easy way is to use the ROCK Pi 4B image(which disabled the DP) and manually enable MIPI DSI, you will lose USB port, fix it following this thread: