linux-kernel - [PATCH v2 2/2] arm64: dts: qcom: x1e78100-t14s: Add audio playback over DisplayPort

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Message-ID: <20251217120051.98198-4-krzysztof.kozlowski@oss.qualcomm.com>
Date: Wed, 17 Dec 2025 13:00:53 +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>,
        Abel Vesa <abel.vesa@...aro.org>
Subject: [PATCH v2 2/2] arm64: dts: qcom: x1e78100-t14s: Add audio playback over DisplayPort

Add necessary DAI links and DAI name prefixes to enable audio playback
over USB/DisplayPort and HDMI.  The HDMI port is not yet enabled, but it
should carry respective DAI name prefix regardless.

Reviewed-by: Abel Vesa <abel.vesa@...aro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>

---

ALSA UCM and audioreach topology will follow up as well.

Changes in v2:
1. Move name prefixes to patch #1
2. Rb tag
---
 .../qcom/x1e78100-lenovo-thinkpad-t14s.dtsi   | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
index 80ece9db875a..7aee9a20c6df 100644
--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
@@ -351,6 +351,54 @@ sound {
 				"VA DMIC1", "VA 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>;
+			};
+		};
+
+		displayport-2-dai-link {
+			link-name = "DisplayPort2 Playback";
+
+			codec {
+				sound-dai = <&mdss_dp2>;
+			};
+
+			cpu {
+				sound-dai = <&q6apmbedai DISPLAY_PORT_RX_2>;
+			};
+
+			platform {
+				sound-dai = <&q6apm>;
+			};
+		};
+
 		wcd-playback-dai-link {
 			link-name = "WCD Playback";
 
-- 
2.51.0