linux-kernel - Re: [PATCH v7 4/5] dt-bindings:iio:adc:adi,ad7768-1: Add documentation for channel label

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Date:   Thu, 5 Nov 2020 11:19:40 -0600
From:   Rob Herring <robh@...nel.org>
To:     Cristian Pop <cristian.pop@...log.com>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        jic23@...nel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v7 4/5] dt-bindings:iio:adc:adi,ad7768-1: Add
 documentation for channel label

On Mon, Nov 02, 2020 at 04:19:59PM +0200, Cristian Pop wrote:
> Optional attribute for better identification of the channels.
> 
> Signed-off-by: Cristian Pop <cristian.pop@...log.com>
> ---
> Changes in v7:
>  - Add "additionalProperties: false" for channel child nodes.
>  - Fix "reg" spelling.
>  .../bindings/iio/adc/adi,ad7768-1.yaml        | 32 +++++++++++++++++++
>  1 file changed, 32 insertions(+)

Jonathan's common ADC schema should remove the need for some of this, 
but given it's v7:

Reviewed-by: Rob Herring <robh@...nel.org>

> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
> index d3733ad8785a..6be43bf5c1e0 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
> @@ -29,6 +29,12 @@ properties:
>    interrupts:
>      maxItems: 1
>  
> +  '#address-cells':
> +    const: 1
> +
> +  '#size-cells':
> +    const: 0
> +
>    vref-supply:
>      description:
>        ADC reference voltage supply
> @@ -61,6 +67,24 @@ required:
>    - spi-cpha
>    - adi,sync-in-gpios
>  
> +patternProperties:
> +  "^channel@([0-9]|1[0-5])$":
> +    type: object
> +    description: |
> +      Represents the external channels which are connected to the device.
> +
> +    properties:
> +      reg:
> +        description: |
> +          The channel number.
> +
> +      label:
> +        description: |
> +          Unique name to identify which channel this is.
> +    required:
> +      - reg
> +    additionalProperties: false
> +
>  additionalProperties: false
>  
>  examples:
> @@ -84,6 +108,14 @@ examples:
>              reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
>              clocks = <&ad7768_mclk>;
>              clock-names = "mclk";
> +
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            channel@0 {
> +                reg = <0>;
> +                label = "channel_0";
> +            };
>          };
>      };
>  ...
> -- 
> 2.17.1
>