Rockpi4/Raspberry Pi official LCD
ROCK Pi 4 > Using Raspberry Pi official LCD Screen
ROCK Pi were support the Raspberry pi official 7 inch LCD touch screen now, in future it can support more other production.
Connect MIPI DSI Screen
Using Raspberry Pi 7 Inch LCD Touch Screen
Change the /boot/hw_intfc.conf:
#enable raspberry pi official 7 inch LCD support intfc:dtoverlay=raspberrypi-7-inch-lcd
Reboot your ROCK Pi 4.