linux-kernel - Re: [PATCH v2 1/2] regulator: rt6160: Add DT binding document for Richtek RT6160

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Date:   Tue, 18 May 2021 08:38:31 -0500
From:   Rob Herring <robh@...nel.org>
To:     cy_huang <u0084500@...il.com>
Cc:     lgirdwood@...il.com, broonie@...nel.org,
        linux-kernel@...r.kernel.org, cy_huang@...htek.com,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 1/2] regulator: rt6160: Add DT binding document for
 Richtek RT6160

On Mon, May 17, 2021 at 12:45:59AM +0800, cy_huang wrote:
> From: ChiYuan Huang <cy_huang@...htek.com>
> 
> Add DT binding document for Richtek RT6160 voltage regulator.
> 
> Signed-off-by: ChiYuan Huang <cy_huang@...htek.com>
> ---
> since v2
> - Move buckboost node from patternProperties to Properties.
> ---
>  .../regulator/richtek,rt6160-regulator.yaml        | 67 ++++++++++++++++++++++
>  1 file changed, 67 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt6160-regulator.yaml
> 
> diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt6160-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt6160-regulator.yaml
> new file mode 100644
> index 00000000..4ce1f7c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/richtek,rt6160-regulator.yaml
> @@ -0,0 +1,67 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/richtek,rt6160-regulator.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Richtek RT6160 BuckBoost converter
> +
> +maintainers:
> +  - ChiYuan Huang <cy_huang@...htek.com>
> +
> +description: |
> +  The RT6160 is a high-efficiency buck-boost converter that can provide
> +  up to 3A output current from 2025mV to 5200mV. And it support the wide
> +  input voltage range from 2200mV to 5500mV.
> +
> +  Datasheet is available at
> +  https://www.richtek.com/assets/product_file/RT6160A/DS6160A-00.pdf
> +
> +properties:
> +  compatible:
> +    enum:
> +      - richtek,rt6160
> +
> +  reg:
> +    maxItems: 1
> +
> +  enable-gpios:
> +    description: A connection of the 'enable' gpio line.
> +    maxItems: 1
> +
> +  richtek,vsel_active_low:

richtek,vsel-active-low

> +    description: |
> +      Used to indicate the 'vsel' pin active level. if not specified, use
> +      high active level as the default.
> +    type: boolean
> +
> +  buckboost:

If this is the only regulator, you don't really need a child node here. 
Just move everything up.

> +    description: BuckBoost converter regulator description.
> +    type: object
> +    $ref: regulator.yaml#
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      rt6160@75 {
> +        compatible = "richtek,rt6160";
> +        reg = <0x75>;
> +        enable-gpios = <&gpio26 2 0>;
> +
> +        buckboost {
> +          regulator-name = "rt6160-buckboost";
> +          regulator-min-microvolt = <2025000>;
> +          regulator-max-microvolt = <5200000>;
> +          regulator-allowed-modes = <0 1>;
> +        };
> +      };
> +    };
> -- 
> 2.7.4
>