Kernel-4.18.0-80.el8_rockchip-dr

Rockchip DRM master device

The Rockchip DRM master device is a virtual device needed to list all
vop devices or other display interface nodes that comprise the
graphics subsystem.

Required properties:

• compatible: Should be “rockchip,display-subsystem”
• ports: Should contain a list of phandles pointing to display interface port
  of vop devices. vop definitions as defined in
  Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt

example:

display-subsystem {
compatible = “rockchip,display-subsystem”;
ports = <&vopl_out>, <&vopb_out>;
};