linux-kernel - Re: [PATCH v3 04/10] dt-bindings: display: renesas,du: Add r8a779h0

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Message-ID: <20241211154508.GA3075383-robh@kernel.org>
Date: Wed, 11 Dec 2024 09:45:08 -0600
From: Rob Herring <robh@...nel.org>
To: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
	Andrzej Hajda <andrzej.hajda@...el.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>, 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>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, LUU HOAI <hoai.luu.ub@...esas.com>,
	Jagan Teki <jagan@...rulasolutions.com>,
	Sam Ravnborg <sam@...nborg.org>,
	Biju Das <biju.das.jz@...renesas.com>,
	dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
	linux-clk@...r.kernel.org,
	Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Subject: Re: [PATCH v3 04/10] dt-bindings: display: renesas,du: Add r8a779h0

On Fri, Dec 06, 2024 at 11:32:37AM +0200, Tomi Valkeinen wrote:
> From: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
> 
> Extend the Renesas DU display bindings to support the r8a779h0 V4M.
> 
> Note that we remove the requirement for two ports from the global part
> of the bindings, as each conditional part defines the number of required
> ports already. This came up with r8a779h0 as it's the first one that has
> only one port.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
> Tested-by: Geert Uytterhoeven <geert+renesas@...der.be>
> ---
>  .../devicetree/bindings/display/renesas,du.yaml    | 52 ++++++++++++++++++++--
>  1 file changed, 48 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/renesas,du.yaml b/Documentation/devicetree/bindings/display/renesas,du.yaml
> index c5b9e6812bce..7dec47aea052 100644
> --- a/Documentation/devicetree/bindings/display/renesas,du.yaml
> +++ b/Documentation/devicetree/bindings/display/renesas,du.yaml
> @@ -41,6 +41,7 @@ properties:
>        - renesas,du-r8a77995 # for R-Car D3 compatible DU
>        - renesas,du-r8a779a0 # for R-Car V3U compatible DU
>        - renesas,du-r8a779g0 # for R-Car V4H compatible DU
> +      - renesas,du-r8a779h0 # for R-Car V4M compatible DU
>  
>    reg:
>      maxItems: 1
> @@ -69,10 +70,6 @@ properties:
>          $ref: /schemas/graph.yaml#/properties/port
>          unevaluatedProperties: false
>  
> -    required:
> -      - port@0
> -      - port@1
> -
>      unevaluatedProperties: false
>  
>    renesas,cmms:
> @@ -807,6 +804,53 @@ allOf:
>          - reset-names
>          - renesas,vsps
>  
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a779h0
> +    then:
> +      properties:
> +        clocks:
> +          items:
> +            - description: Functional clock
> +
> +        clock-names:
> +          items:
> +            - const: du.0
> +
> +        interrupts:
> +          maxItems: 1
> +
> +        resets:
> +          maxItems: 1
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DSI 0
> +            port@1: false
> +            port@2: false
> +            port@3: false
> +
> +          required:
> +            - port@0
> +
> +        renesas,vsps:
> +          minItems: 1

maxItems? The min is already 1.

Note maxItems is missing in all the other cases too. Since the top-level 
definition has no constraints, all the constraints under if/then schemas 
need both minItems and maxItems. (Unless there's no max).

> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +        - renesas,vsps
> +
>  additionalProperties: false
>  
>  examples:
> 
> -- 
> 2.43.0
>