linux-kernel - Re: [PATCH v2 1/7] dt-bindings: display: panel: Add himax hx83102 panel bindings

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Date: Mon, 22 Apr 2024 10:14:24 -0500
From: Rob Herring <robh@...nel.org>
To: Cong Yang <yangcong5@...qin.corp-partner.google.com>
Cc: sam@...nborg.org, neil.armstrong@...aro.org, daniel@...ll.ch,
	dianders@...omium.org, linus.walleij@...aro.org,
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
	airlied@...il.com, dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	xuxinxiong@...qin.corp-partner.google.com
Subject: Re: [PATCH v2 1/7] dt-bindings: display: panel: Add himax hx83102
 panel bindings

On Mon, Apr 22, 2024 at 05:03:04PM +0800, Cong Yang wrote:
> In V1, discussed with Doug and Linus [1], we need break out as separate
> driver for the himax83102-j02 controller. So add new documentation for
> "starry,himax83102-j02" panel.
> 
> [1]: https://lore.kernel.org/all/CACRpkdbzYZAS0=zBQJUC4CB2wj4s1h6n6aSAZQvdMV95r3zRUw@mail.gmail.com

Please summarize this in the commit message rather than referring to a 
link to understand "why" you doing this.

> 
> Signed-off-by: Cong Yang <yangcong5@...qin.corp-partner.google.com>
> ---
>  .../display/panel/boe,tv101wum-nl6.yaml       |  2 -
>  .../bindings/display/panel/himax,hx83102.yaml | 73 +++++++++++++++++++
>  2 files changed, 73 insertions(+), 2 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/himax,hx83102.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
> index 906ef62709b8..53fb35f5c9de 100644
> --- a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
> +++ b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
> @@ -32,8 +32,6 @@ properties:
>        - innolux,hj110iz-01a
>          # STARRY 2081101QFH032011-53G 10.1" WUXGA TFT LCD panel
>        - starry,2081101qfh032011-53g
> -        # STARRY himax83102-j02 10.51" WUXGA TFT LCD panel
> -      - starry,himax83102-j02
>          # STARRY ili9882t 10.51" WUXGA TFT LCD panel
>        - starry,ili9882t
>  
> diff --git a/Documentation/devicetree/bindings/display/panel/himax,hx83102.yaml b/Documentation/devicetree/bindings/display/panel/himax,hx83102.yaml
> new file mode 100644
> index 000000000000..2e0cd6998ba8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/himax,hx83102.yaml
> @@ -0,0 +1,73 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/himax,hx83102.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Himax HX83102 MIPI-DSI LCD panel controller
> +
> +maintainers:
> +  - Cong Yang <yangcong5@...qin.corp-partner.google.com>
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +        # STARRY himax83102-j02 10.51" WUXGA TFT LCD panel
> +      - starry,himax83102-j02
> +
> +  reg:
> +    description: the virtual channel number of a DSI peripheral
> +
> +  enable-gpios:
> +    description: a GPIO spec for the enable pin
> +
> +  pp1800-supply:
> +    description: core voltage supply
> +
> +  avdd-supply:
> +    description: phandle of the regulator that provides positive voltage
> +
> +  avee-supply:
> +    description: phandle of the regulator that provides negative voltage
> +
> +  backlight:
> +    description: phandle of the backlight device attached to the panel
> +
> +  port: true
> +  rotation: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - enable-gpios
> +  - pp1800-supply
> +  - avdd-supply
> +  - avee-supply
> +
> +additionalProperties: false

Perhaps 'unevaluatedProperties' instead. Don't you want to support 
standard properties such as width-mm/height-mm?

> +
> +examples:
> +  - |
> +    dsi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        panel@0 {
> +            compatible = "starry,himax83102-j02";
> +            reg = <0>;
> +            enable-gpios = <&pio 45 0>;
> +            avdd-supply = <&ppvarn_lcd>;
> +            avee-supply = <&ppvarp_lcd>;
> +            pp1800-supply = <&pp1800_lcd>;
> +            backlight = <&backlight_lcd0>;
> +            port {
> +                panel_in: endpoint {
> +                    remote-endpoint = <&dsi_out>;
> +                };
> +            };
> +        };
> +    };
> +
> +...
> -- 
> 2.25.1
>