linux-kernel - [PATCH v2 6/7] arm64: dts: qcom: sm8650: Add sound DAI prefix for DP

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Message-Id: <20260127-topic-sm8650-ayaneo-pocket-s2-base-v2-6-c55ec1b5d8bf@linaro.org>
Date: Tue, 27 Jan 2026 10:57:33 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, 
 Rob Clark <robin.clark@....qualcomm.com>, 
 Dmitry Baryshkov <lumag@...nel.org>, 
 Abhinav Kumar <abhinav.kumar@...ux.dev>, 
 Jessica Zhang <jesszhan0024@...il.com>, Sean Paul <sean@...rly.run>, 
 Marijn Suijten <marijn.suijten@...ainline.org>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.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>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 freedreno@...ts.freedesktop.org, linux-usb@...r.kernel.org, 
 linux-renesas-soc@...r.kernel.org, linux-pci@...r.kernel.org, 
 Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v2 6/7] 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.

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 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@...4000 {
 				phy-names = "dp";
 
 				#sound-dai-cells = <0>;
+				sound-name-prefix = "DisplayPort0";
 
 				status = "disabled";
 

-- 
2.34.1