Re: [PATCH v3 3/4] ASoC: dt-bindings: fsl-sai: allow only one dma-names

Rob Herring
2024-03-04T14:59:01Z

On Wed, Feb 28, 2024 at 02:14:15PM -0500, Frank Li wrote:
> Some sai only connect one direction. So allow only "rx" or "tx" for
> dma-names.
>
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
> Documentation/devicetree/bindings/sound/fsl,sai.yaml | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/sound/fsl,sai.yaml b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
> index 2456d958adeef..0302752d58a2b 100644
> --- a/Documentation/devicetree/bindings/sound/fsl,sai.yaml
> +++ b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
> @@ -86,10 +86,14 @@ properties:
> - description: DMA controller phandle and request line for TX
>
> dma-names:
> - minItems: 1
> - items:
> - - const: rx

Just this change is enough:

- enum: [ rx, tx ]

(We enforce unique items elsewhere already)

> - - const: tx
> + oneOf:
> + - items:
> + - const: rx
> + - const: tx
> + - items:
> + - enum:
> + - rx
> + - tx