linux-kernel - Re: [v6 1/4] dt-bindings: pwm: Add ASPEED PWM Control documentation

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Message-ID: <4dffd320-8e30-fb30-6ded-79519afddc21@linaro.org>
Date:   Thu, 8 Jun 2023 08:46:31 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Billy Tsai <billy_tsai@...eedtech.com>, jdelvare@...e.com,
        linux@...ck-us.net, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, joel@....id.au, andrew@...id.au,
        thierry.reding@...il.com, u.kleine-koenig@...gutronix.de,
        corbet@....net, p.zabel@...gutronix.de,
        linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-pwm@...r.kernel.org, linux-doc@...r.kernel.org,
        patrick@...cx.xyz
Subject: Re: [v6 1/4] dt-bindings: pwm: Add ASPEED PWM Control documentation

On 08/06/2023 04:18, Billy Tsai wrote:
> Document the compatible for aspeed,ast2600-pwm device.
> 
> Signed-off-by: Billy Tsai <billy_tsai@...eedtech.com>
> ---
>  .../bindings/pwm/aspeed,ast2600-pwm.yaml      | 38 +++++++++++++++++++
>  1 file changed, 38 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
> new file mode 100644
> index 000000000000..a9e040263578
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
> @@ -0,0 +1,38 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) 2021 Aspeed, Inc.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pwm/aspeed,ast2600-pwm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Aspeed Ast2600 PWM controller
> +
> +maintainers:
> +  - Billy Tsai <billy_tsai@...eedtech.com>
> +
> +description: |
> +  The Aspeed PWM controller supports up to 1 PWM outputs.

This does not look right.

> +
> +allOf:
> +  - $ref: pwm.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - aspeed,ast2600-pwm
> +
> +  "#pwm-cells":
> +    const: 3

3 cells? For one PWM? What are they?

> +
> +  clocks:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - clocks
> +  - resets
> +
> +additionalProperties: false

Missing examples. All bindings need examples.

Best regards,
Krzysztof