linux-kernel - Re: [PATCH v3 1/2] dt-bindings: iio: dac: add mcp4728.yaml

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Message-ID: <20230720-nastily-professor-3a5cae27893d@spud>
Date:   Thu, 20 Jul 2023 18:01:25 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Andrea Collamati <andrea.collamati@...il.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] dt-bindings: iio: dac: add mcp4728.yaml

Hey Andrea,

On Thu, Jul 20, 2023 at 05:40:02PM +0200, Andrea Collamati wrote:
> Add documentation for MCP4728
> 
> Signed-off-by: Andrea Collamati <andrea.collamati@...il.com>
> ---
>  .../bindings/iio/dac/microchip,mcp4728.yaml   | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/dac/microchip,mcp4728.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/dac/microchip,mcp4728.yaml b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4728.yaml
> new file mode 100644
> index 000000000000..6fd9be076245
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4728.yaml
> @@ -0,0 +1,48 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4728.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microchip MCP4728 DAC
> +
> +description:
> +  MCP4728 is a quad channel, 12-bit voltage output
> +  Digital-to-Analog Converter with non-volatile
> +  memory and I2C compatible Serial Interface.
> +  https://www.microchip.com/en-us/product/mcp4728
> +
> +maintainers:
> +  - Andrea Collamati <andrea.collamati@...il.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - microchip,mcp4728

This can just be
compatible:
  const: microchip,mcp47288
since you only have a single item in your enum.

Otherwise, this looks good to me.
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>

Despite the email address, I have no knowledge of the hardware in
question, I'm just reviewing the binding.

Thanks,
Conor.

> +  reg:
> +    maxItems: 1
> +
> +  vdd-supply:
> +    description: |
> +      Provides both power and acts as the reference supply on the MCP4728
> +      when Internal Vref is not selected.
> +
> +required:
> +  - compatible
> +  - reg
> +  - vdd-supply
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        mcp4728@60 {
> +            compatible = "microchip,mcp4728";
> +            reg = <0x60>;
> +            vdd-supply = <&vdac_vdd>;
> +        };
> +    };
> -- 
> 2.34.1
> 

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