Re: [PATCH] arm64: dts: rockchip: Enable DisplayPort for rk3588-evb2

[Quentin Schulz]

Hi Chaoyi Chen,

On 9/16/25 10:08 AM, Chaoyi Chen wrote:
> From: Chaoyi Chen <chaoyi.chen@xxxxxxxxxxxxxx>
>
> The rk3588 evb2 board has a full size DisplayPort connector, enable
> for it.
>
> Signed-off-by: Chaoyi Chen <chaoyi.chen@xxxxxxxxxxxxxx>
> ---
>   .../boot/dts/rockchip/rk3588-evb2-v10.dts     | 39 +++++++++++++++++++
>   1 file changed, 39 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3588-evb2-v10.dts b/arch/arm64/boot/dts/rockchip/rk3588-evb2-v10.dts
> index 91fe810d38d8..0e5af61f66fe 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3588-evb2-v10.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3588-evb2-v10.dts
> @@ -25,6 +25,18 @@ chosen {
>   		stdout-path = "serial2:1500000n8";
>   	};
>   
> +	dp-con {
> +		compatible = "dp-connector";
> +		label = "DP OUT";
> +		type = "full size";

This isn't valid according to the dt binding. It should be "full-size" 
instead.

> +
> +		port {
> +			dp_con_in: endpoint {
> +				remote-endpoint = <&dp0_out_con>;
> +			};
> +		};
> +	};
> +
>   	hdmi-con {
>   		compatible = "hdmi-connector";
>   		type = "a";
> @@ -106,6 +118,24 @@ vcc5v0_usbdcin: regulator-vcc5v0-usbdcin {
>   	};
>   };
>   
> +&dp0 {
> +	pinctrl-0 = <&dp0m0_pins>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};
> +
> +&dp0_in {
> +	dp0_in_vp2: endpoint {
> +		remote-endpoint = <&vp2_out_dp0>;
> +	};
> +};
> +
> +&dp0_out {
> +	dp0_out_con: endpoint {
> +		remote-endpoint = <&dp_con_in>;
> +	};
> +};
> +
>   &gpu {
>   	mali-supply = <&vdd_gpu_s0>;
>   	sram-supply = <&vdd_gpu_mem_s0>;
> @@ -916,6 +946,8 @@ &usb_host1_xhci {
>   };
>   
>   &vop {
> +	assigned-clocks = <&cru DCLK_VOP2_SRC>;
> +	assigned-clock-parents = <&cru PLL_V0PLL>;

This is surprising, the only other board which has the DP0 enabled (the 
CoolPi 4B) doesn't set these two.

Does HDMI still work as well as it used to with these new properties? 
Why are those needed? Some context in the commit log or as a comment in 
the DT would be most welcome!

Cheers,
Quentin