[PATCH 1/2] spi: dt-bindings: spi-peripheral-props: Document spi-cpha and spi-cpol

[Conor Dooley]

On Thu, Aug 29, 2024 at 05:13:14PM -0300, Fabio Estevam wrote:
> The 'spi-cpha' and 'spi-cpol' are commonly used SPI peripheral
> properties that indicate the device clock phase and polarity.
> 
> Document these properties.
> 
> Signed-off-by: Fabio Estevam <festevam at gmail.com>
> ---
>  .../devicetree/bindings/spi/spi-peripheral-props.yaml  | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
> index 0bb443b8decd..b2e2717f3619 100644
> --- a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
> +++ b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
> @@ -29,6 +29,16 @@ properties:
>      description:
>        Chip select used by the device.
>  
> +  spi-cpha:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description:
> +      The device data is sampled on trailing (last) edge of the SPI clock.
> +
> +  spi-cpol:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description:
> +      The device clock has a falling lead (first) edge.

These two should just be usable with "spi-cpha: true", they're applied
by the controller schema to it's child nodes, so you don't need to
redefine their type here.

> +
>    spi-cs-high:
>      $ref: /schemas/types.yaml#/definitions/flag
>      description:
> -- 
> 2.34.1
> 
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