linux-kernel - [PATCH] ARM: dts: rockchip: add HDMI audio to rk3288-miqi

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Message-Id: <20250828163501.3829226-1-christianshewitt@gmail.com>
Date: Thu, 28 Aug 2025 16:35:01 +0000
From: Christian Hewitt <christianshewitt@...il.com>
To: Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Alex Bee <knaerzche@...il.com>
Subject: [PATCH] ARM: dts: rockchip: add HDMI audio to rk3288-miqi

From: Alex Bee <knaerzche@...il.com>

Add the sound and i2s nodes to enable HDMI audio output on
the MiQi board.

Signed-off-by: Alex Bee <knaerzche@...il.com>
Signed-off-by: Christian Hewitt <christianshewitt@...il.com>
---
 arch/arm/boot/dts/rockchip/rk3288-miqi.dts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/rockchip/rk3288-miqi.dts b/arch/arm/boot/dts/rockchip/rk3288-miqi.dts
index dd42f8d31f70..20df626547bd 100644
--- a/arch/arm/boot/dts/rockchip/rk3288-miqi.dts
+++ b/arch/arm/boot/dts/rockchip/rk3288-miqi.dts
@@ -78,6 +78,21 @@ vcc_sys: regulator-vsys {
 		regulator-always-on;
 		regulator-boot-on;
 	};
+
+	sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,name = "HDMI";
+		simple-audio-card,mclk-fs = <512>;
+
+		simple-audio-card,codec {
+			sound-dai = <&hdmi>;
+		};
+
+		simple-audio-card,cpu {
+			sound-dai = <&i2s>;
+		};
+	};
 };
 
 &cpu0 {
@@ -283,6 +298,11 @@ &i2c5 {
 	status = "okay";
 };
 
+&i2s {
+	#sound-dai-cells = <0>;
+	status = "okay";
+};
+
 &io_domains {
 	status = "okay";
 
-- 
2.34.1