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Message-ID: <465dc390-a5ff-547a-2bd3-54b29e1b6c43@linaro.org>
Date:   Thu, 14 Sep 2023 07:54:20 +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 1/4] dt-bindings: serial: document esp32-uart bindings

On 13/09/2023 23:14, Max Filippov wrote:
> Add documentation for the ESP32xx UART controllers.
> 
> Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
> ---
>  .../bindings/serial/esp,esp32-uart.yaml       | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/serial/esp,esp32-uart.yaml
> 
> diff --git a/Documentation/devicetree/bindings/serial/esp,esp32-uart.yaml b/Documentation/devicetree/bindings/serial/esp,esp32-uart.yaml
> new file mode 100644
> index 000000000000..8b45ef808107
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/serial/esp,esp32-uart.yaml
> @@ -0,0 +1,48 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/serial/esp,esp32-uart.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ESP32 UART controller
> +
> +maintainers:
> +  - Max Filippov <jcmvbkbc@...il.com>
> +
> +description: |

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

> +  ESP32 UART controller is a part of ESP32 SoC series.
> +
> +properties:
> +  compatible:
> +    oneOf:

That's just enum. Your descriptions are useless - tell nothing - so drop
them.

> +      - description: UART controller for the ESP32 SoC
> +        const: esp,esp32-uart

Looks quite generic, so just to be sure? This is not a family name,
right? Neither family names nor wildcards are allowed.

> +      - description: UART controller for the ESP32S3 SoC
> +        const: esp,esp32s3-uart
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    serial0: serial@...00000 {

Drop unused label.

> +            compatible = "esp,esp32s3-uart";

Use 4 spaces for example indentation.

> +            reg = <0x60000000 0x80>;
> +            interrupts = <27 1 0>;

Use proper define for IRQ flags.

> +            clocks = <&serial_clk>;
> +    };

Best regards,
Krzysztof

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