linux-kernel - [PATCH v2] arm64: dts: qcom: x1-crd: add USB DisplayPort audio

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Message-ID: <20250624122933.54776-2-krzysztof.kozlowski@linaro.org>
Date: Tue, 24 Jun 2025 14:29:34 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
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@...aro.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH v2] arm64: dts: qcom: x1-crd: add USB DisplayPort audio

Add support for playing audio over USB DisplayPort (the two left USB-C
ports on the CRD device).

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---

Changes since v1:
1. Rebase (x1-crd.dtsi appeared)
2. Re-order cpu/codec
3. Add blank line before status for mdss_dp
4. Tags
---
 arch/arm64/boot/dts/qcom/x1-crd.dtsi | 36 ++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1-crd.dtsi b/arch/arm64/boot/dts/qcom/x1-crd.dtsi
index c9f0d5052670..ffef25719f27 100644
--- a/arch/arm64/boot/dts/qcom/x1-crd.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1-crd.dtsi
@@ -219,6 +219,38 @@ sound {
 				"VA DMIC3", "MIC BIAS1",
 				"TX SWR_INPUT1", "ADC2_OUTPUT";
 
+		displayport-0-dai-link {
+			link-name = "DisplayPort0 Playback";
+
+			codec {
+				sound-dai = <&mdss_dp0>;
+			};
+
+			cpu {
+				sound-dai = <&q6apmbedai DISPLAY_PORT_RX_0>;
+			};
+
+			platform {
+				sound-dai = <&q6apm>;
+			};
+		};
+
+		displayport-1-dai-link {
+			link-name = "DisplayPort1 Playback";
+
+			codec {
+				sound-dai = <&mdss_dp1>;
+			};
+
+			cpu {
+				sound-dai = <&q6apmbedai DISPLAY_PORT_RX_1>;
+			};
+
+			platform {
+				sound-dai = <&q6apm>;
+			};
+		};
+
 		wcd-playback-dai-link {
 			link-name = "WCD Playback";
 
@@ -1124,6 +1156,8 @@ &mdss {
 };
 
 &mdss_dp0 {
+	sound-name-prefix = "DisplayPort0";
+
 	status = "okay";
 };
 
@@ -1132,6 +1166,8 @@ &mdss_dp0_out {
 };
 
 &mdss_dp1 {
+	sound-name-prefix = "DisplayPort1";
+
 	status = "okay";
 };
 
-- 
2.48.1