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Message-ID: <9113e319-58a2-fd90-6887-fb32eb21fd18@canonical.com>
Date:   Fri, 4 Mar 2022 16:01:36 +0100
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Subject: Re: [PATCH v2 1/2] dt-bindings:pwm:Add bindings doc for Sunplus SoC
 PWM Driver
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To:     Hammer Hsieh <hammerh0314@gmail.com>, thierry.reding@gmail.com,
        u.kleine-koenig@pengutronix.de, lee.jones@linaro.org,
        robh+dt@kernel.org, linux-pwm@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc:     wells.lu@sunplus.com, hammer.hsieh@sunplus.com
References: <1646374812-2988-1-git-send-email-hammerh0314@gmail.com>
 <1646374812-2988-2-git-send-email-hammerh0314@gmail.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
In-Reply-To: <1646374812-2988-2-git-send-email-hammerh0314@gmail.com>
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On 04/03/2022 07:20, Hammer Hsieh wrote:
> Add bindings doc for Sunplus SoC PWM Driver

You miss spaces in the subject.

> 
> Signed-off-by: Hammer Hsieh <hammerh0314@gmail.com>
> ---
> Changes in v2:
>  - Addressed all comments from Rob Herring.
>    modify author's mail match Signed-off-by.
>  - rebase kernel to 5.17 rc5
> 
>  .../devicetree/bindings/pwm/pwm-sunplus.yaml       | 40 ++++++++++++++++++++++
>  MAINTAINERS                                        |  5 +++
>  2 files changed, 45 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sunplus.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pwm/pwm-sunplus.yaml b/Documentation/devicetree/bindings/pwm/pwm-sunplus.yaml
> new file mode 100644
> index 0000000..19fe5d5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/pwm-sunplus.yaml
> @@ -0,0 +1,40 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) Sunplus Co., Ltd. 2021
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pwm/pwm-sunplus.yaml#

Is it going to be one binding for all Sunplus SoCs? Existing and future?

> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sunplus SoC PWM Controller
> +
> +maintainers:
> +  - Hammer Hsieh <hammerh0314@gmail.com>
> +

allOf with pwm.yaml
Then unevaluatedProperties instead of additionalProperties.


> +properties:
> +  '#pwm-cells':
> +    const: 2
> +
> +  compatible:

Commpatible goes first. Rest of properties you could order
alphabetically. Similar approach in required.


> +    items:
> +      - const: sunplus,sp7021-pwm
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +required:

compatible

> +  - reg
> +  - clocks


> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    pwm: pwm@9c007a00 {
> +      #pwm-cells = <2>;
> +      compatible = "sunplus,sp7021-pwm";

compatible goes first, then reg.


Best regards,
Krzysztof