linux-kernel - Re: [PATCH 2/3] dt-bindings: regulator: Add document bindings for max77826

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Date:   Mon, 20 Apr 2020 15:55:01 -0500
From:   Rob Herring <robh@...nel.org>
To:     Iskren Chernev <iskren.chernev@...il.com>
Cc:     linux-arm-msm@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        devicetree@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
        linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>,
        ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH 2/3] dt-bindings: regulator: Add document bindings for
 max77826

On Mon, Apr 13, 2020 at 07:44:39PM +0300, Iskren Chernev wrote:
> Add device tree binding information for max77826 regulator driver.
> Example bindings for max77826 are added.
> 
> Signed-off-by: Iskren Chernev <iskren.chernev@...il.com>
> ---
>  .../bindings/regulator/maxim,max77826.yaml    | 70 +++++++++++++++++++
>  1 file changed, 70 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/maxim,max77826.yaml
> 
> diff --git a/Documentation/devicetree/bindings/regulator/maxim,max77826.yaml b/Documentation/devicetree/bindings/regulator/maxim,max77826.yaml
> new file mode 100644
> index 000000000000..3cd449a746b0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/maxim,max77826.yaml
> @@ -0,0 +1,70 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/maxim,max77826.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Maxim Integrated MAX77826 PMIC
> +
> +maintainers:
> +  - Iskren Chernev <iskren.chernev@...il.com>
> +
> +properties:
> +  $nodename:
> +    pattern: "pmic@[0-9a-f]{1,2}"
> +  compatible:
> +    enum:
> +      - maxim,max77826-regulator
> +
> +  reg:
> +    maxItems: 1
> +
> +  regulators:
> +    type: object
> +    allOf:
> +      - $ref: regulator.yaml#
> +    description: |
> +      list of regulators provided by this controller, must be named
> +      after their hardware counterparts LDO[1-15], BUCK and BUCKBOOST
> +
> +    patternProperties:
> +      "^LDO([1-9]|1[0-5])$":
> +        type: object
> +        allOf:
> +          - $ref: regulator.yaml#
> +
> +      "^BUCK|BUCKBOOST$":
> +        type: object
> +        allOf:
> +          - $ref: regulator.yaml#
> +
> +      additionalProperties: false

You are defining a property called 'additionalProperties'. This one 
should be dropped because additionalProperties doesn't work with a $ref.

> +    additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +  - regulators
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        pmic@69 {
> +            compatible = "maxim,max77826-regulator";
> +            reg = <0x69>;
> +
> +            regulators {
> +                LDO2 {
> +                    regulator-name = "ldo2";
> +                    regulator-min-microvolt = <650000>;
> +                    regulator-max-microvolt = <3587500>;
> +                };
> +            };
> +       };
> +     };
> +...
> -- 
> 2.26.0
>