Re: [PATCH] soundwire: bus: iterate DT compatibles for class-ID match

[Charles Keepax <ckeepax@opensource.cirrus.com>]

On Mon, Sep 07, 2026 at 10:14:21AM +0100, Srinivas Kandagatla wrote:
> sdw_of_find_slaves() reads only the first "compatible" string on a
> SoundWire slave DT node and rejects the node if that string does not
> parse as sdwVMMMPPPPXX.  This prevents the standard DT convention of
> placing a vendor-variant compatible ahead of the SoundWire class-ID
> compatible:
> 
>     compatible = "vendor,partname", "sdwVMMMPPPPXX";
> 
> Iterate every string in the compatible property and accept the first
> one that parses as a SoundWire class ID.  The vendor-variant string
> remains visible to driver probe callbacks via device_is_compatible()
> for mode/variant disambiguation.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
> ---

Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>

Thanks,
Charles