Sound DAI devices exposing same set of mixers, e.g. each DisplayPort
controller, need to add dedicated prefix for these mixers to avoid
conflicts and to allow ALSA to properly configure given instance.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 arch/arm64/boot/dts/qcom/sm8650.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index ec79ba904f5d..db769baf4d58 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -5721,6 +5721,7 @@ mdss_dp0: displayport-controller@af54000 {
 				phy-names = "dp";
 
 				#sound-dai-cells = <0>;
+				sound-name-prefix = "DisplayPort0";
 
 				status = "disabled";
 

-- 
2.34.1

On Tue, Jan 27, 2026 at 10:57:33AM +0100, Neil Armstrong wrote:
> Sound DAI devices exposing same set of mixers, e.g. each DisplayPort
> controller, need to add dedicated prefix for these mixers to avoid
> conflicts and to allow ALSA to properly configure given instance.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/sm8650.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>


-- 
With best wishes
Dmitry

On 1/27/26 10:57 AM, Neil Armstrong wrote:
> Sound DAI devices exposing same set of mixers, e.g. each DisplayPort
> controller, need to add dedicated prefix for these mixers to avoid
> conflicts and to allow ALSA to properly configure given instance.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad