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Message-ID: <6a09f16e-0a41-4619-b7bb-b5561f7e36ce@linaro.org>
Date:   Wed, 1 Nov 2023 08:13:24 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Tzuyi Chang <tychang@...ltek.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Shevchenko <andy@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] dt-bindings: gpio: realtek: Add realtek,rtd-gpio
 bindings

On 01/11/2023 03:58, Tzuyi Chang wrote:
> This patch adds the device tree bindings for the Realtek DHC RTD SoCs
> GPIO controllers.
> 

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

> Signed-off-by: Tzuyi Chang <tychang@...ltek.com>
> ---
>  .../bindings/gpio/realtek,rtd-gpio.yaml       | 56 +++++++++++++++++++
>  1 file changed, 56 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/gpio/realtek,rtd-gpio.yaml

How does your binding come after the user?

> 
> diff --git a/Documentation/devicetree/bindings/gpio/realtek,rtd-gpio.yaml b/Documentation/devicetree/bindings/gpio/realtek,rtd-gpio.yaml
> new file mode 100644
> index 000000000000..6cab7ec50c88
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/realtek,rtd-gpio.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright 2023 Realtek Semiconductor Corporation
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpio/realtek,rtd-gpio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Realtek DHC GPIO controller

What is DHC? Where is it explained in the binding?

> +
> +maintainers:
> +  - TY Chang <tychang@...ltek.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - realtek,rtd-gpio

What is "rtd"? Generic name? Drop. You cannot have generic compatibles.


> +      - realtek,rtd1295-misc-gpio
> +      - realtek,rtd1295-iso-gpio
> +      - realtek,rtd1395-iso-gpio
> +      - realtek,rtd1619-iso-gpio
> +
> +  reg:
> +    maxItems: 2

You need to describe the items instead.

> +
> +  interrupts:
> +    maxItems: 2

You need to describe the items instead.

> +
> +  gpio-ranges: true
> +
> +  gpio-controller: true
> +
> +  "#gpio-cells":
> +    const: 2
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - gpio-ranges
> +  - gpio-controller
> +  - "#gpio-cells"

Best regards,
Krzysztof

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