linux-kernel - Re: [PATCH v2 3/3] dt-bindings: iio: dac: ad5686: add binding

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Date:   Wed, 23 Sep 2020 21:15:52 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Michael Auchter <michael.auchter@...com>
Cc:     Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Rob Herring <robh+dt@...nel.org>, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] dt-bindings: iio: dac: ad5686: add binding

On Tue, 22 Sep 2020 13:40:12 -0500
Michael Auchter <michael.auchter@...com> wrote:

> Add a binding for AD5686
> 
> Signed-off-by: Michael Auchter <michael.auchter@...com>
Hi Michael,

Thanks for this.
A few comments inline.

Thanks,

Jonathan

> ---
> Changes since v1:
> - Keep supported device sorted
> - fix adc -> dac type in schema path
> 
>  .../bindings/iio/dac/adi,ad5686.yaml          | 61 +++++++++++++++++++
>  1 file changed, 61 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml
> new file mode 100644
> index 000000000000..9ce76d75f31b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml
> @@ -0,0 +1,61 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/dac/adi,ad5686.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices AD5686 and similar multi-channel DACs
> +
> +maintainers:
> +  - Michael Auchter <michael.auchter@...com>
> +
> +description: |
> +  Binding for Analog Devices AD5686 and similar multi-channel DACs
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,ad5311r
> +      - adi,ad5338r
> +      - adi,ad5671r
> +      - adi,ad5675r
> +      - adi,ad5691r
> +      - adi,ad5692r
> +      - adi,ad5693
> +      - adi,ad5693r
> +      - adi,ad5694
> +      - adi,ad5694r
> +      - adi,ad5695r
> +      - adi,ad5696
> +      - adi,ad5696r
> +
> +  reg:
> +    maxItems: 1
> +
> +  vcc-supply:
> +    description: |
> +      The regulator supply for DAC reference voltage.
> +
> +  '#address-cells':
> +    const: 1
> +
> +  '#size-cells':
> +    const: 0

Why address-cells and size-cells?  Properties we are giving
are for the dac, not the i2c bus.

> +
> +required:
> +  - compatible
> +  - reg


additionalProperties: false

> +
> +examples:
> +  - |
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      ad5686: dac@0 {
> +        compatible = "adi,ad5686";
> +        reg = <0>;
> +        vcc-supply = <&dac_vref>;
> +      };
> +    };
> +