linux-kernel - [PATCH v2 1/2] arm64: dts: qcom: hamoa: Add sound DAI prefixes for DP

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Message-ID: <20251217120051.98198-3-krzysztof.kozlowski@oss.qualcomm.com>
Date: Wed, 17 Dec 2025 13:00:52 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH v2 1/2] arm64: dts: qcom: hamoa: Add sound DAI prefixes 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.

Suggested-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>

---

Changes in v2:
1. New patch
---
 arch/arm64/boot/dts/qcom/hamoa.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/hamoa.dtsi b/arch/arm64/boot/dts/qcom/hamoa.dtsi
index a17900eacb20..c3119a6c28ec 100644
--- a/arch/arm64/boot/dts/qcom/hamoa.dtsi
+++ b/arch/arm64/boot/dts/qcom/hamoa.dtsi
@@ -5579,6 +5579,7 @@ mdss_dp0: displayport-controller@...0000 {
 				phy-names = "dp";
 
 				#sound-dai-cells = <0>;
+				sound-name-prefix = "DisplayPort0";
 
 				status = "disabled";
 
@@ -5667,6 +5668,7 @@ mdss_dp1: displayport-controller@...8000 {
 				phy-names = "dp";
 
 				#sound-dai-cells = <0>;
+				sound-name-prefix = "DisplayPort1";
 
 				status = "disabled";
 
@@ -5755,6 +5757,7 @@ mdss_dp2: displayport-controller@...a000 {
 				phy-names = "dp";
 
 				#sound-dai-cells = <0>;
+				sound-name-prefix = "DisplayPort2";
 
 				status = "disabled";
 
@@ -5838,6 +5841,7 @@ mdss_dp3: displayport-controller@...0000 {
 				phy-names = "dp";
 
 				#sound-dai-cells = <0>;
+				sound-name-prefix = "DisplayPort3";
 
 				status = "disabled";
 
-- 
2.51.0