linux-kernel - [PATCH v2 08/11] arm64: dts: rockchip: Add RK3576 HDMI audio

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Message-Id: <20250410-rk3576-sai-v2-8-c64608346be3@collabora.com>
Date: Thu, 10 Apr 2025 21:40:00 +0200
From: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
To: Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>, 
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
 Philipp Zabel <p.zabel@...gutronix.de>, 
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
 Sugar Zhang <sugar.zhang@...k-chips.com>
Cc: Luca Ceresoli <luca.ceresoli@...tlin.com>, 
 Sebastian Reichel <sebastian.reichel@...labora.com>, kernel@...labora.com, 
 linux-clk@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, linux-sound@...r.kernel.org, 
 Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
Subject: [PATCH v2 08/11] arm64: dts: rockchip: Add RK3576 HDMI audio

The RK3576 SoC now has upstream support for HDMI.

Add an HDMI audio node, which uses SAI6 as its audio controller
according to downstream.

Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
---
 arch/arm64/boot/dts/rockchip/rk3576.dtsi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576.dtsi b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
index 91aaba3b2b7c6d208254025cfb9ab711e0d424f5..848c82d70a076ee48049de1818245767133ed95f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
@@ -413,6 +413,22 @@ scmi_clk: protocol@14 {
 		};
 	};
 
+	hdmi_sound: hdmi-sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "HDMI";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,mclk-fs = <256>;
+		status = "disabled";
+
+		simple-audio-card,codec {
+			sound-dai = <&hdmi>;
+		};
+
+		simple-audio-card,cpu {
+			sound-dai = <&sai6>;
+		};
+	};
+
 	pmu_a53: pmu-a53 {
 		compatible = "arm,cortex-a53-pmu";
 		interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
@@ -1069,6 +1085,7 @@ hdmi: hdmi@...a0000 {
 			reset-names = "ref", "hdp";
 			rockchip,grf = <&ioc_grf>;
 			rockchip,vo-grf = <&vo0_grf>;
+			#sound-dai-cells = <0>;
 			status = "disabled";
 
 			ports {

-- 
2.49.0