linux-kernel - Re: [PATCH v4 1/2] dt:bindings:iio:frequency: Add ADMV4420 doc

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Date:   Fri, 18 Feb 2022 12:43:22 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Cristian Pop <cristian.pop@...log.com>, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     jic23@...nel.org, devicetree@...r.kernel.org, robh+dt@...nel.org
Subject: Re: [PATCH v4 1/2] dt:bindings:iio:frequency: Add ADMV4420 doc

On 18/02/2022 10:50, Cristian Pop wrote:
> Add device tree bindings for the ADMV4420 K band downconverter.

Subject needs fixes. You miss spaces there, incorrect prefix. Use git
log --oneline to get the examples subject style in given subsystem.

> 
> Signed-off-by: Cristian Pop <cristian.pop@...log.com>
> ---
>  .../bindings/iio/frequency/adi,admv4420.yaml  | 55 +++++++++++++++++++
>  1 file changed, 55 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/frequency/adi,admv4420.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/frequency/adi,admv4420.yaml b/Documentation/devicetree/bindings/iio/frequency/adi,admv4420.yaml
> new file mode 100644
> index 000000000000..35a3fb3fd339
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/frequency/adi,admv4420.yaml
> @@ -0,0 +1,55 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/frequency/adi,admv4420.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ADMV4420 K Band Downconverter
> +
> +maintainers:
> +  - Cristian Pop <cristian.pop@...log.com>
> +
> +description:
> +  The ADMV4420 is a highly integrated, double balanced, active
> +  mixer with an integrated fractional-N synthesizer, ideally suited
> +  for next generation K band satellite communications
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,admv4420
> +
> +  reg:
> +    maxItems: 1
> +
> +  spi-max-frequency:
> +    maximum: 1000000
> +
> +  adi,lo-freq-khz:
> +    description: LO Frequency
> +    $ref: /schemas/types.yaml#/definitions/uint32

Rob's question from v3 remains unanswered...

> +
> +  adi,ref-ext-single-ended-en:
> +    description: External reference selected.
> +    type: boolean
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    spi {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      admv4420@0 {

Generic node name. It's a kind of plague there... everyone using
specific model as node name.

> +        compatible = "adi,admv4420";
> +        reg = <0>;
> +        spi-max-frequency = <1000000>;
> +        adi,lo-freq-khz = <16750000>;
> +        adi,ref-ext-single-ended-en;
> +      };
> +    };
> +...


Best regards,
Krzysztof