linux-kernel - Re: [PATCH v4 4/5] dt-bindings: iio: adc: ad7192: Add clock provider

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Date: Thu, 13 Jun 2024 17:43:03 +0100
From: Conor Dooley <conor@...nel.org>
To: Alisa-Dariana Roman <alisadariana@...il.com>
Cc: Alisa-Dariana Roman <alisa.roman@...log.com>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Michael Hennerich <michael.hennerich@...log.com>,
	linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Alexandru Tachici <alexandru.tachici@...log.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Jonathan Cameron <jic23@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH v4 4/5] dt-bindings: iio: adc: ad7192: Add clock provider

On Thu, Jun 13, 2024 at 02:40:00PM +0300, Alisa-Dariana Roman wrote:
> Internal clock of AD719X devices can be made available on MCLK2 pin. Add
> clock provider to support this functionality.
> 
> Signed-off-by: Alisa-Dariana Roman <alisa.roman@...log.com>
> ---
>  .../devicetree/bindings/iio/adc/adi,ad7192.yaml       | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> index 3ae2f860d24c..1434d89c2880 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> @@ -42,13 +42,20 @@ properties:
>      description: |
>        Optionally, either a crystal can be attached externally between MCLK1 and
>        MCLK2 pins, or an external CMOS-compatible clock can drive the MCLK2
> -      pin. If absent, internal 4.92MHz clock is used.
> +      pin. If absent, internal 4.92MHz clock is used, which can be made
> +      available on MCLK2 pin.
>  
>    clock-names:
>      enum:
>        - xtal
>        - mclk
>  
> +  "#clock-cells":
> +    const: 0
> +
> +  clock-output-names:
> +    maxItems: 1

Why do you need an output name when you have exactly one clock?

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