linux-kernel - Re: [PATCH v3 2/2] dt-bindings:iio:amplifiers: add ad7293 doc

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Date:   Sun, 21 Nov 2021 12:36:03 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Antoniu Miclaus <antoniu.miclaus@...log.com>
Cc:     <robh+dt@...nel.org>, <linux-iio@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] dt-bindings:iio:amplifiers: add ad7293 doc

On Mon, 15 Nov 2021 12:23:40 +0200
Antoniu Miclaus <antoniu.miclaus@...log.com> wrote:

> Add device tree bindings for the AD7293 Power Amplifier.
> 
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>

Hi Antoniu,

A few trivial things inline that I'd missed before.

Jonathan

> ---
> no changes in v3
>  .../bindings/iio/amplifiers/adi,ad7293.yaml   | 64 +++++++++++++++++++
>  1 file changed, 64 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/amplifiers/adi,ad7293.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,ad7293.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,ad7293.yaml
> new file mode 100644
> index 000000000000..9f1b2eb78af3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,ad7293.yaml
> @@ -0,0 +1,64 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/amplifiers/adi,ad7293.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: AD7293 12-Bit Power Amplifier Current Controller with ADC,
> +       DACs, Temperature and Current Sensors
> +
> +maintainers:
> +  - Antoniu Miclaus <antoniu.miclaus@...log.com>
> +
> +description: |
> +   Power Amplifier drain current controller containing functionality
> +   for general-purpose monitoring and control of current, voltage,
> +   and temperature, integrated into a single chip solution with an
> +   SPI-compatible interface.
> +
> +   https://www.analog.com/en/products/ad7293.html
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,ad7293
> +
> +  avdd-supply:
> +    description:
> +      AVDD voltage regulator.

Not sure these descriptions add anything. 
avdd-supply: true 
is fine. 

> +
> +  vdrive-supply:
> +    description:
> +      VDRIVE voltage regulator.
> +
> +  reg:
> +    maxItems: 1
> +
> +  spi-max-frequency:
> +    maximum: 1000000
> +
> +  reset-gpios: true

Specify how many?
maxItems: 1

> +
> +required:
> +  - compatible
> +  - reg
> +  - avdd-supply
> +  - vdrive-supply
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    spi {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      ad7293@0 {
> +        compatible = "adi,ad7293";
> +        reg = <0>;
> +        spi-max-frequency = <1000000>;
> +        avdd-supply = <&avdd>;
> +        vdrive-supply = <&vdrive>;
> +        reset-gpios = <&gpio 10 0>;
> +      };
> +    };
> +...