ARM64: dts: rk3328-evb: add spdif sound

Change-Id: I76adc6286d831f513da3f5547975d7fcd3c392e9
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>

Author: Sugar Zhang

arch/arm64/boot/dts/rockchip/rk3328-evb.dts

@@ -112,6 +112,22 @@
 			sound-dai = <&codec>;
 		};
 	};
+
+	spdif-sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "rockchip,spdif";
+		simple-audio-card,cpu {
+			sound-dai = <&spdif>;
+		};
+		simple-audio-card,codec {
+			sound-dai = <&spdif_out>;
+		};
+	};
+
+	spdif_out: spdif-out {
+		compatible = "linux,spdif-dit";
+		#sound-dai-cells = <0>;
+	};
 };
 
 &i2s1 {
@@ -124,6 +140,11 @@
 	status = "okay";
 };
 
+&spdif {
+	#sound-dai-cells = <0>;
+	status = "okay";
+};
+
 &cpu0 {
 	cpu-supply = <&vdd_arm>;
 };