linux-kernel - [PATCH 4/4] arm64: dts: rockchip: add HDMI audio on ROCK 4D

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Message-Id: <20250630-rock4d-audio-v1-4-0b3c8e8fda9c@collabora.com>
Date: Mon, 30 Jun 2025 12:19:27 +0200
From: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Heiko Stuebner <heiko@...ech.de>
Cc: kernel@...labora.com, linux-input@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, 
 Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
Subject: [PATCH 4/4] arm64: dts: rockchip: add HDMI audio on ROCK 4D

Much like the Sige5, the ROCK 4D also has an HDMI port, so is capable of
providing HDMI audio output as well.

Enable the SoC's hdmi_sound card, and also enable the SoC audio
controller (sai6) that feeds into it.

Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
---
 arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
index 4d4b8ababd2436b82515443b029916b3c786dba1..70bc6f909ec0843607c2705ee9f73b0ba521a977 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
@@ -322,6 +322,10 @@ hdmi_out_con: endpoint {
 	};
 };
 
+&hdmi_sound {
+	status = "okay";
+};
+
 &hdptxphy {
 	status = "okay";
 };
@@ -772,6 +776,10 @@ &sai1m0_sdi0
 	status = "okay";
 };
 
+&sai6 {
+	status = "okay";
+};
+
 &saradc {
 	vref-supply = <&vcca1v8_pldo2_s0>;
 	status = "okay";

-- 
2.50.0