linux-kernel - Re: [PATCH v4 1/5] dt-bindings: regulator: Add ADI MAX77541/MAX77540 Regulator

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Date:   Wed, 1 Feb 2023 15:46:28 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Okan Sahin <okan.sahin@...log.com>
Cc:     Lee Jones <lee@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Ramona Bolboaca <ramona.bolboaca@...log.com>,
        Marcelo Schmitt <marcelo.schmitt1@...il.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Marcus Folkesson <marcus.folkesson@...il.com>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        William Breathitt Gray <william.gray@...aro.org>,
        ChiYuan Huang <cy_huang@...htek.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-iio@...r.kernel.org
Subject: Re: [PATCH v4 1/5] dt-bindings: regulator: Add ADI MAX77541/MAX77540
 Regulator

On 01/02/2023 11:35, Okan Sahin wrote:
> Add ADI MAX77541/MAX77540 Regulator devicetree document.
> 
> Signed-off-by: Okan Sahin <okan.sahin@...log.com>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>  .../regulator/adi,max77541-regulator.yaml     | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml
> 
> diff --git a/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml b/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml
> new file mode 100644
> index 000000000000..fff463d5e79d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml
> @@ -0,0 +1,44 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/adi,max77541-regulator.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Buck Converter for MAX77540/MAX77541
> +
> +maintainers:
> +  - Okan Sahin <okan.sahin@...log.com>
> +
> +description: |
> +  This is a part of device tree bindings for ADI MAX77540/MAX77541
> +
> +  The buck converter is represented as a sub-node of the PMIC node on the device tree.
> +
> +  The device has two buck regulators.
> +  See also Documentation/devicetree/bindings/mfd/adi,max77541.yaml for
> +  additional information and example.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,max77540-regulator
> +      - adi,max77541-regulator

Why do need the compatible? I don't see any usage of it in the driver
(empty driver data).

Best regards,
Krzysztof