linux-kernel - Re: [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells

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Message-ID: <49bb7b5b-4186-83cc-7e1e-4892c7e8b6ef@axentia.se>
Date: Tue, 30 Jan 2024 12:42:03 +0100
From: Peter Rosin <peda@...ntia.se>
To: Naresh Solanki <naresh.solanki@...ements.com>,
 Jonathan Cameron <jic23@...nel.org>, Lars-Peter Clausen <lars@...afoo.de>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: mazziesaccount@...il.com, linux-iio@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] dt-bindings: iio: afe: voltage-divider: Add
 io-channel-cells

Hi!

2024-01-30 at 12:18, Naresh Solanki wrote:
> voltage-divider is always an iio consumer at the same time it is
> optionally an iio provider.
> Hence add #io-channel-cells
> Also update example.
> 
> Signed-off-by: Naresh Solanki <naresh.solanki@...ements.com>
> ---
>  .../bindings/iio/afe/voltage-divider.yaml          | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> index dddf97b50549..09f10d7c4e02 100644
> --- a/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> +++ b/Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
> @@ -39,6 +39,13 @@ properties:
>      description: |
>        Channel node of a voltage io-channel.
>  
> +  '#io-channel-cells':
> +    description:
> +      In addition to consuming the measurement services of an ADC,

It doesn't really need to be an ADC. Anything with a voltage output
channel works (in theory). But sure, normally it would be an ADC...

> +      the voltage divider can act as an provider of measurement

a provider

Cheers,
Peter

> +      services to other devices.
> +    const: 1
> +
>    output-ohms:
..