linux-kernel - Re: [PATCH 10/22] dt-bindings: display: renesas,rzg2l-du: Add support for RZ/G3E SoC

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Message-ID: <aWEl7A43aW9MAGvq@tom-desktop>
Date: Fri, 9 Jan 2026 16:59:40 +0100
From: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
To: tomm.merciai@...il.com
Cc: linux-renesas-soc@...r.kernel.org, biju.das.jz@...renesas.com,
	Andrzej Hajda <andrzej.hajda@...el.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Jonas Karlman <jonas@...boo.se>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Magnus Damm <magnus.damm@...il.com>,
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH 10/22] dt-bindings: display: renesas,rzg2l-du: Add
 support for RZ/G3E SoC

Hi Krystoff, Laurent, Geert,

On Wed, Nov 26, 2025 at 03:07:22PM +0100, Tommaso Merciai wrote:
> The RZ/G3E Soc has 2 LCD controller (LCDC), contain a Frame Compression
> Processor (FCPVD), a Video Signal Processor (VSPD), Video Signal
> Processor (VSPD), and Display Unit (DU).
> 
>  - LCDC0 supports DSI and LVDS (single or dual-channel) outputs.
>  - LCDC1 supports DSI, LVDS (single-channel), and RGB outputs.
> 
> Add then two new SoC-specific compatible strings 'renesas,r9a09g047-du0'
> and 'renesas,r9a09g047-du1'.
> 
> Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
> ---
>  .../bindings/display/renesas,rzg2l-du.yaml    | 42 +++++++++++++++++++
>  1 file changed, 42 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
> index 2cc66dcef870..a68252ae02fb 100644
> --- a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
> +++ b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
> @@ -20,6 +20,8 @@ properties:
>        - enum:
>            - renesas,r9a07g043u-du # RZ/G2UL
>            - renesas,r9a07g044-du # RZ/G2{L,LC}
> +          - renesas,r9a09g047-du0 # RZ/G3E DU0
> +          - renesas,r9a09g047-du1 # RZ/G3E DU1
>            - renesas,r9a09g057-du # RZ/V2H(P)
>        - items:
>            - enum:
> @@ -137,6 +139,46 @@ allOf:
>  
>            required:
>              - port@0
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: renesas,r9a09g047-du0
> +    then:
> +      properties:
> +        ports:
> +          properties:
> +            port@0:
> +              description: DSI
> +            port@1:
> +              description: LVDS
> +            port@2:
> +              description: LVDS
> +
> +          required:
> +            - port@0
> +            - port@1
> +            - port@2
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: renesas,r9a09g047-du1
> +    then:
> +      properties:
> +        ports:
> +          properties:
> +            port@0:
> +              description: DSI
> +            port@1:
> +              description: LVDS
> +            port@2:
> +              description: DPAD
> +
> +          required:
> +            - port@0
> +            - port@1
> +            - port@2
>  
>  examples:
>    # RZ/G2L DU
> -- 
> 2.43.0
> 

What is your opinion on this patch?
I posted some more HW details on [0]

Thanks & Regards,
Tommaso

[0] https://patchwork.kernel.org/comment/26686746/