linux-kernel - Re: [PATCH 2/5] dt-bindings: hwmon: Document adt7475 bypass-attenuator property

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Date:   Thu, 20 Feb 2020 14:01:32 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Chris Packham <chris.packham@...iedtelesis.co.nz>
Cc:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Mark Rutland <mark.rutland@....com>,
        Logan Shaw <logan.shaw@...iedtelesis.co.nz>,
        Linux HWMON List <linux-hwmon@...r.kernel.org>,
        devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/5] dt-bindings: hwmon: Document adt7475
 bypass-attenuator property

On Mon, Feb 17, 2020 at 5:47 PM Chris Packham
<chris.packham@...iedtelesis.co.nz> wrote:
>
> From: Logan Shaw <logan.shaw@...iedtelesis.co.nz>
>
> Add documentation for the bypass-attenuator-in[0-4] property.
>
> Signed-off-by: Logan Shaw <logan.shaw@...iedtelesis.co.nz>
> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
> ---
>  .../devicetree/bindings/hwmon/adt7475.yaml          | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/hwmon/adt7475.yaml b/Documentation/devicetree/bindings/hwmon/adt7475.yaml
> index 2252499ea201..61da90c82649 100644
> --- a/Documentation/devicetree/bindings/hwmon/adt7475.yaml
> +++ b/Documentation/devicetree/bindings/hwmon/adt7475.yaml
> @@ -39,6 +39,17 @@ properties:
>    reg:
>      maxItems: 1
>
> +patternProperties:
> +  "^bypass-attenuator-in[0-4]$":
> +    maxItems: 1
> +    minimum: 0
> +    maximum: 1

The errors here are because you are mixing array and scalar constraints.

You also need a vendor prefix and a type $ref.

> +    description: |
> +      Configures bypassing the individual voltage input attenuator. If
> +      set to 1 the attenuator is bypassed if set to 0 the attenuator is
> +      not bypassed. If the property is absent then the attenuator
> +      retains it's configuration from the bios/bootloader.
> +
>  required:
>    - compatible
>    - reg
> @@ -52,6 +63,8 @@ examples:
>        hwmon@2e {
>          compatible = "adi,adt7476";
>          reg = <0x2e>;
> +        bypass-attenuator-in0 = <1>;
> +        bypass-attenuator-in1 = <0>;
>        };
>      };
>
> --
> 2.25.0
>