linux-kernel - Re: [PATCH 1/2] dt-bindings: display: Add SSD133x OLED controllers

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Message-ID: <20231217-bacteria-amusable-77efb05770a4@spud>
Date: Sun, 17 Dec 2023 20:52:22 +0000
From: Conor Dooley <conor@...nel.org>
To: Javier Martinez Canillas <javierm@...hat.com>
Cc: linux-kernel@...r.kernel.org, Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Rob Herring <robh@...nel.org>,
	Peter Robinson <pbrobinson@...il.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Conor Dooley <conor+dt@...nel.org>, Daniel Vetter <daniel@...ll.ch>,
	David Airlie <airlied@...il.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 1/2] dt-bindings: display: Add SSD133x OLED controllers

On Sun, Dec 17, 2023 at 11:07:03AM +0100, Javier Martinez Canillas wrote:
> Add a Device Tree binding schema for the OLED panels based on the
> Solomon SSD133x family of controllers.
> 
> Signed-off-by: Javier Martinez Canillas <javierm@...hat.com>
> ---
> 
>  .../bindings/display/solomon,ssd133x.yaml     | 63 +++++++++++++++++++
>  1 file changed, 63 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/solomon,ssd133x.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/solomon,ssd133x.yaml b/Documentation/devicetree/bindings/display/solomon,ssd133x.yaml
> new file mode 100644
> index 000000000000..eee8d8c9ca35
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/solomon,ssd133x.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/solomon,ssd133x.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Solomon SSD133x OLED Display Controllers
> +
> +maintainers:
> +  - Javier Martinez Canillas <javierm@...hat.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - solomon,ssd1331
> +
> +required:
> +  - compatible
> +  - reg
> +
> +allOf:
> +  - $ref: solomon,ssd-common.yaml#
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: solomon,ssd1331
> +    then:
> +      properties:
> +        width:
> +          default: 96
> +        height:
> +          default: 64

Do you envisage a rake of devices that are going to end up in this
binding? Otherwise, why not unconditionally set the constraints?

Cheers,
Conor.

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