linux-kernel - Re: [PATCH] arm64: dts: rockchip: support camera module on Haikou Video Demo on PX30 Ringneck

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Message-ID: <2806486.NG923GbCHz@phil>
Date: Mon, 09 Jun 2025 11:56:54 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Quentin Schulz <foss+kernel@...il.net>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
 Quentin Schulz <quentin.schulz@...rry.de>
Subject:
 Re: [PATCH] arm64: dts: rockchip: support camera module on Haikou Video Demo
 on PX30 Ringneck

Hi Quentin,

Am Freitag, 16. Mai 2025, 19:26:10 Mitteleuropäische Sommerzeit schrieb Quentin Schulz:
> +&isp {
> +	status = "okay";
> +
> +	ports {
> +		port@0 {
> +			mipi_in_cam: endpoint@0 {
> +				reg = <0>;
> +				data-lanes = <1 2>;
> +				remote-endpoint = <&cam_out>;
> +			};
> +		};
> +	};
>  };

dtc is quite unhappy about this construct ;-) .

with a W=1 build option when compiling DTBs we end up with a number
of complaints about missing and/or unneeded address-cells/size-cells
or "only one endpoint, @0 not necessary".

I think it would make sense to give the isp port a phandle in the
px30.dtsi and reference that one here - similar to how the dsi-panel
works.