Subject: Re: [PATCH v2 4/4] arm64: dts: rockchip: Add overlay for FriendlyElec HD702E

From: Heiko Stuebner <[email-masked]>
Date: Sun, 22 Feb 2026 14:59:40 +0100

Am Freitag, 23. Januar 2026, 20:22:23 Mitteleuropäische Normalzeit schrieb Robin Murphy:
> Add an overlay to support FriendlyElec's HD702E 7" eDP LCD touchscreen
> module for the NanoPC-T4 board:
> 
> https://www.friendlyelec.com/index.php?route=product/product&path=81&product_id=230
> 
> Signed-off-by: Robin Murphy <[email-masked]>

[...]

> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4-hd702e.dtso b/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4-hd702e.dtso
> new file mode 100644
> index 000000000000..66ac530392b7
> --- /dev/null
> +++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4-hd702e.dtso
> @@ -0,0 +1,96 @@
> +&edp {
> +	force-hpd;
> +	status = "okay";
> +
> +	aux-bus {
> +		edp-panel {

The dtbs-check was unhappy, because the auxbus binding wishes for this
node to be named "panel". I'll just change this when applying.

Heiko

> +			compatible = "friendlyarm,hd702e";
> +			backlight = <&backlight>;
> +			no-hpd;
> +			power-supply = <&vdd_3_3v>;
> +
> +			port {
> +				panel_in_edp: endpoint {
> +					remote-endpoint = <&edp_out_panel>;
> +				};
> +			};
> +		};
> +	};
> +};