linux-kernel - [PATCH 07/12] arm64: dts: mediatek: mt8390-genio-common: Add HDMI sound output support

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Message-Id: <20251209-mtk-genio-evk-hdmi-support-v1-7-9a6106effba6@collabora.com>
Date: Tue, 09 Dec 2025 17:34:37 +0100
From: Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
To: Chunfeng Yun <chunfeng.yun@...iatek.com>, Vinod Koul <vkoul@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Chun-Kuang Hu <chunkuang.hu@...nel.org>, 
 Philipp Zabel <p.zabel@...gutronix.de>, 
 Guillaume Ranquet <granquet@...libre.com>
Cc: kernel@...labora.com, Krzysztof Kozlowski <krzk@...nel.org>, 
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 linux-phy@...ts.infradead.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
Subject: [PATCH 07/12] arm64: dts: mediatek: mt8390-genio-common: Add HDMI
 sound output support

Add in the sound node a new dai-link for ETDM3_OUT_BE to add the sound
output support through the HDMI connector.

Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
---
 arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
index 5fa1f5fbad18f2bf9b153ae9a029829641e43023..2062506f6cc523d7797adc8b7e74732be9320201 100644
--- a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
@@ -1344,6 +1344,15 @@ codec {
 			sound-dai = <&dmic_codec>;
 		};
 	};
+
+	dai-link-2 {
+		link-name = "ETDM3_OUT_BE";
+
+		codec {
+			sound-dai = <&hdmi 0>;
+		};
+	};
+
 };
 
 &spi2 {

-- 
2.52.0