linux-kernel - Re: [PATCH 1/2] dt-bindings: regulator: Add binding for Richtek RT5759 DCDC converter

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Date:   Fri, 25 Mar 2022 13:14:33 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     cy_huang <u0084500@...il.com>, broonie@...nel.org,
        robh+dt@...nel.org
Cc:     lgirdwood@...il.com, cy_huang@...htek.com, gene_chen@...htek.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: regulator: Add binding for Richtek
 RT5759 DCDC converter

On 25/03/2022 02:06, cy_huang wrote:
> From: ChiYuan Huang <cy_huang@...htek.com>
> 
> Add bindings for Richtek RT5759 high-performance DCDC converter.
> 
> Signed-off-by: ChiYuan Huang <cy_huang@...htek.com>
> ---
>  .../regulator/richtek,rt5759-regulator.yaml        | 90 ++++++++++++++++++++++
>  1 file changed, 90 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt5759-regulator.yaml
> 
> diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt5759-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt5759-regulator.yaml
> new file mode 100644
> index 00000000..c24b583
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/richtek,rt5759-regulator.yaml
> @@ -0,0 +1,90 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/richtek,rt5759-regulator.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Richtek RT5759 High Performance DCDC Concverter

typo: Converter

> +
> +maintainers:
> +  - ChiYuan Huang <cy_huang@...htek.com>
> +
> +description: |
> +  The RT5759 is a high-performance, synchronous step-down DC-DC converter that
> +  can deliver up to 9A output current from 3V to 6.5V input supply, The output
> +  voltage can be programmable with I2C controlled 7-Bit VID.
> +
> +  Datasheet is available at
> +  https://www.richtek.com/assets/product_file/RT5759/DS5759-00.pdf
> +
> +allOf:
> +  - $ref: regulator.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - richtek,rt5759
> +      - richtek,rt5759a
> +
> +  reg:
> +    maxItems: 1
> +
> +  regulator-allowed-modes:
> +    description: |
> +      buck allowed operating mode
> +        0: auto mode (PSKIP: pulse skipping)
> +        1: force pwm mode
> +    items:
> +      enum: [0, 1]
> +
> +  richtek,watchdog-enable:
> +    description: enable the external watchdog reset pin listening
> +    type: boolean
> +
> +if:

This should be inside allOf. Move allOf here,

> +  properties:
> +    compatible:
> +      contains:
> +        const: richtek,rt5759
> +then:
> +  properties:
> +    richtek,watchdog-enable: false
> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  # example 1 for RT5759
> +  - |
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      rt5759@62 {

Generic node name, so pmic.

> +        compatible = "richtek,rt5759";
> +        reg = <0x62>;
> +        regulator-name = "rt5759-buck";
> +        regulator-min-microvolt = <600000>;
> +        regulator-max-microvolt = <1500000>;
> +        regulator-boot-on;
> +      };
> +    };
> +  # example 2 for RT5759A
> +  - |
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      rt5759a@62 {

Ditto

> +        compatible = "richtek,rt5759a";
> +        reg = <0x62>;
> +        regulator-name = "rt5759a-buck";
> +        regulator-min-microvolt = <600000>;
> +        regulator-max-microvolt = <1725000>;
> +        regulator-boot-on;
> +        richtek,watchdog-enable;
> +      };
> +    };


Best regards,
Krzysztof