linux-kernel - Re: [PATCH 2/3] arm64: dts: renesas: r8a77961: Add lvds0 device node

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Date:   Wed, 29 Dec 2021 18:56:55 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Nikita Yushchenko <nikita.yoush@...entembedded.com>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: renesas: r8a77961: Add lvds0 device node

Hi Nikita,

Thank you for the patch.

On Fri, Dec 24, 2021 at 08:23:08AM +0300, Nikita Yushchenko wrote:
> Add the missing lvds0 node for the R-Car M3-W+ SoC.
> 
> Signed-off-by: Nikita Yushchenko <nikita.yoush@...entembedded.com>
> ---
>  arch/arm64/boot/dts/renesas/r8a77961.dtsi | 27 +++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a77961.dtsi b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> index 86d59e7e1a87..a34d5b1d6431 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> @@ -2718,6 +2718,33 @@ du_out_hdmi0: endpoint {
>  				port@2 {
>  					reg = <2>;
>  					du_out_lvds0: endpoint {
> +						remote-endpoint = <&lvds0_in>;
> +					};
> +				};
> +			};
> +		};
> +
> +		lvds0: lvds@...90000 {
> +			compatible = "renesas,r8a77961-lvds";
> +			reg = <0 0xfeb90000 0 0x14>;
> +			clocks = <&cpg CPG_MOD 727>;
> +			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
> +			resets = <&cpg 727>;
> +			status = "disabled";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +					lvds0_in: endpoint {
> +						remote-endpoint = <&du_out_lvds0>;
> +					};
> +				};
> +				port@1 {
> +					reg = <1>;
> +					lvds0_out: endpoint {
>  					};

Endpoints must have a remote-endpoint property. Let's drop the endpoint
here and keep the port only, the endpoint can be declared in board
files.

If you're fine with this change I can make it when applying the patch.

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

>  				};
>  			};

-- 
Regards,

Laurent Pinchart