From: Torsten Duwe <duwe@lst.de>
Date: Mon, 24 Nov 2025 18:30:56 +0000 (+0100)
Subject: arm64: dts: rockchip: Enable SPDIF audio on Rock 5 ITX
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2cc30da80a28a8a5d1337230c3586eb2f9580120;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: rockchip: Enable SPDIF audio on Rock 5 ITX

The Rock5 ITX has an S/PDIF (TOSLINK) socket in its I/O-shield, whose
TX signal is wired to GPIO4 C1. Activate SPDIF TX unit 1 and select
the proper pinmux (M2).

Signed-off-by: Torsten Duwe <duwe@lst.de>
Link: https://patch.msgid.link/20251124183056.B853068C4E@verein.lst.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
index 172aeabba72a5..de154adb14974 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
@@ -147,6 +147,24 @@
 		reset-gpios = <&gpio0 RK_PC4 GPIO_ACTIVE_LOW>;
 	};
 
+	spdif_dit: spdif-dit {
+		compatible = "linux,spdif-dit";
+		#sound-dai-cells = <0>;
+	};
+
+	spdif_sound: spdif-sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "SPDIF";
+
+		simple-audio-card,cpu {
+			sound-dai = <&spdif_tx1>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&spdif_dit>;
+		};
+	};
+
 	typec_vin: regulator-typec-vin {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -854,6 +872,11 @@
 	};
 };
 
+&spdif_tx1 {
+	pinctrl-0 = <&spdif1m2_tx>;
+	status = "okay";
+};
+
 &spi2 {
 	status = "okay";
 	assigned-clocks = <&cru CLK_SPI2>;