linux-kernel - Re: [PATCH 3/4] dt-bindings: serial: document esp32s3-acm bindings

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Date:   Thu, 14 Sep 2023 07:57:32 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Max Filippov <jcmvbkbc@...il.com>, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org, devicetree@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH 3/4] dt-bindings: serial: document esp32s3-acm bindings

On 13/09/2023 23:14, Max Filippov wrote:
> Add documentation for the ESP32S3 ACM controller.

A nit, subject: drop second/last, redundant "bindings". The
"dt-bindings" prefix is already stating that these are bindings.

> 
> Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
> ---
>  .../bindings/serial/esp,esp32-acm.yaml        | 40 +++++++++++++++++++
>  1 file changed, 40 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/serial/esp,esp32-acm.yaml
> 
> diff --git a/Documentation/devicetree/bindings/serial/esp,esp32-acm.yaml b/Documentation/devicetree/bindings/serial/esp,esp32-acm.yaml
> new file mode 100644
> index 000000000000..dafbae38aa64
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/serial/esp,esp32-acm.yaml
> @@ -0,0 +1,40 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/serial/esp,esp32-acm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ESP32S3 ACM controller
> +
> +maintainers:
> +  - Max Filippov <jcmvbkbc@...il.com>
> +
> +description: |

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


> +  ESP32S3 ACM controller is a communication device found in the ESP32S3

What is "ACM"? Why is this in serial? Only serial controllers are in
serial. The description is very vague, way too vague.

> +  SoC that is connected to one of its USB controllers.

Same comments as previous patch.

> +
> +properties:
> +  compatible:
> +    const: esp,esp32s3-acm
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    acm@...38000 {
> +            compatible = "esp,esp32s3-acm";

Use 4 spaces for example indentation.

> +            reg = <0x60038000 0x1000>;
> +            interrupts = <96 3 0>;

Same comments as previous patch.

> +    };

Best regards,
Krzysztof