linux-kernel - Re: [PATCH v1 1/2] dt-bindings: display: panel: Add Starry-er88577 support

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Message-ID: <82685064-5163-4f83-88c8-b29fcb63ef08@linaro.org>
Date: Thu, 9 May 2024 10:40:35 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>,
 dmitry.torokhov@...il.com, robh@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, jikos@...nel.org,
 benjamin.tissoires@...hat.co, dianders@...gle.com, hsinyi@...gle.com
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/2] dt-bindings: display: panel: Add Starry-er88577
 support

On 09/05/2024 08:49, Zhaoxiong Lv wrote:
> Create a new dt-scheam for the Starry-er88577.

typo, but anyway, this is not a "dt-schema".

Describe hardware instead in one sentence.

> 
> Signed-off-by: Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
> ---
>  .../display/panel/starry,er88577.yaml         | 59 +++++++++++++++++++
>  1 file changed, 59 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/starry,er88577.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/starry,er88577.yaml b/Documentation/devicetree/bindings/display/panel/starry,er88577.yaml
> new file mode 100644
> index 000000000000..6686beaf0f16
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/starry,er88577.yaml
> @@ -0,0 +1,59 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/starry,er88577.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Starry Display ER88577 based MIPI-DSI panels
> +
> +description: |

Do not need '|' unless you need to preserve formatting.


> +  -This binding is for display panels using an ER88577 controller

No need to say binding is a binding. Describe hardware instead.

> +
> +maintainers:
> +  - Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    const: starry,er88577
> +
> +  pp3300-supply: true
> +  reg: true

Hm, I wonder why we do not have constraints here in most of the bindings...

Anyway, keep the same order as in required:

> +
> +required:
> +  - compatible
> +  - reg
> +  - enable-gpios
> +  - pp3300-supply
> +  - backlight
> +  - port
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>

You include this header for?

> +
> +    dsi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        panel: panel@0 {
> +            compatible = "starry,er88577";
> +            reg = <0>;
> +            enable-gpios = <&pio 98 0>;

And here do not use it? Use the define.


Best regards,
Krzysztof