Re: [PATCH 2/2] ASoC: dt-bindings: fsl-sai: Support Rx-only SAI

[Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>]

On 19/12/2023 13:29, Alexander Stein wrote:
> On SoC like i.MX8QXP some SAI IP cores support only Rx path. Allow
> specifying only an Rx DMA channel, while omitting the Tx one.
> 
> Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
> ---
> The feature list in reference manual IMX8DQXPRM Rev. 0 05/2020
> section 1.1.2 "Features" explicitly state that SAI2 and SAI3 is
> receive only.
> 

Why aren't you constraining it per variant/device? If only some have one
DMA channel, then I would normally expect allOf:if:then narrowing it for
each device.

Best regards,
Krzysztof