linux-kernel - [PATCH v3 8/9] arm64: dts: qcom: sm8650: Add sound DAI prefix for DP

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Message-Id: <20260206-topic-sm8650-ayaneo-pocket-s2-base-v3-8-5b79c5d61a03@linaro.org>
Date: Fri, 06 Feb 2026 15:50:36 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Geert Uytterhoeven <geert+renesas@...der.be>, 
 Magnus Damm <magnus.damm@...il.com>, Bartosz Golaszewski <brgl@...nel.org>, 
 Manivannan Sadhasivam <mani@...nel.org>, 
 Bjorn Helgaas <bhelgaas@...gle.com>, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org, 
 linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Subject: [PATCH v3 8/9] arm64: dts: qcom: sm8650: Add sound DAI prefix for
 DP

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.

Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.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 a7a06f78e564..6098d6201002 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -5773,6 +5773,7 @@ mdss_dp0: displayport-controller@...4000 {
 				phy-names = "dp";
 
 				#sound-dai-cells = <0>;
+				sound-name-prefix = "DisplayPort0";
 
 				status = "disabled";
 

-- 
2.34.1