rockPi 4C rpi offical display

[Kamlesh_Kushwah]

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. ?

[jack]

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:

Rock Pi 4C is now available?

The difference is the GPIO for the USB Power control is changed because the that GPIO must be used for DP. 4C: https://github.com/radxa/kernel/blob/cef30e88a9f56ca4fc5959a3ff442ce9b68f7501/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts#L87 4A/4B: https://github.com/radxa/kernel/blob/cef30e88a9f56ca4fc5959a3ff442ce9b68f7501/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi#L945 You can edit your dtb with the following: dtc -I dtb -O dts -o rk3399-rockpi-4c.dts rk3399-rockpi-4.dtb e…

[Kamlesh_Kushwah]

Hello Jack

I tried but It’s not working, Did you try with the official display it’s working at your end?

[Kamlesh_Kushwah]

How to manually enable and disable MIPI DSI port?