linux-kernel - Re: [PATCH 1/8] dt-bindings: iio: adc: ad7606: Make corrections on spi conditions

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Message-ID: <20240815-reword-wildland-1319629f0718@spud>
Date: Thu, 15 Aug 2024 15:35:34 +0100
From: Conor Dooley <conor@...nel.org>
To: Guillaume Stols <gstols@...libre.com>
Cc: Uwe Kleine-König <ukleinek@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	Jonathan Cameron <jic23@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Jonathan Corbet <corbet@....net>, linux-pwm@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
	linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
	linux-doc@...r.kernel.org,
	20240705211452.1157967-2-u.kleine-koenig@...libre.com,
	20240712171821.1470833-2-u.kleine-koenig@...libre.com,
	cover.1721040875.git.u.kleine-koenig@...libre.com,
	aardelean@...libre.com
Subject: Re: [PATCH 1/8] dt-bindings: iio: adc: ad7606: Make corrections on
 spi conditions

On Thu, Aug 15, 2024 at 12:11:55PM +0000, Guillaume Stols wrote:
> The SPI conditions are not always required, because there is also a
> parallel interface. The way used to detect that the SPI interface is
> used is to check if the reg value is between 0 and 256.
> There is also a correction on the spi-cpha that is not required when SPI
> interface is selected, while spi-cpol is.

This feels like it should be two patches, with the first having a Fixes:
tag etc, if the original binding was incorrect.

> 
> Signed-off-by: Guillaume Stols <gstols@...libre.com>
> ---
>  .../devicetree/bindings/iio/adc/adi,ad7606.yaml         | 17 ++++++++++++++---
>  1 file changed, 14 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> index 69408cae3db9..c0008d36320f 100644
> --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> @@ -117,15 +117,26 @@ properties:
>  required:
>    - compatible
>    - reg
> -  - spi-cpha
>    - avcc-supply
>    - vdrive-supply
>    - interrupts
>    - adi,conversion-start-gpios
>  
> -allOf:
> -  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +# This checks if reg is a chipselect so the device is on an SPI
> +# bus, the if-clause will fail if reg is a tuple such as for a
> +# platform device.
> +if:
> +  properties:
> +    reg:
> +      minimum: 0
> +      maximum: 256
> +then:
> +  allOf:
> +    - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +    - required:
> +        - spi-cpol
>  
> +allOf:
>    - if:
>        properties:
>          compatible:
> 
> -- 
> 2.34.1
> 

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