ARM: dts: rockchip: add rk322x spdif node

This patch add spdif node for rk322x.
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk322x.dtsi

@@ -196,6 +196,19 @@ i2s0: i2s0@100c0000 {
 		status = "disabled";
 	};
 
+	spdif: spdif@100d0000 {
+		compatible = "rockchip,rk3228-spdif";
+		reg = <0x100d0000 0x1000>;
+		interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru SCLK_SPDIF>, <&cru HCLK_SPDIF_8CH>;
+		clock-names = "mclk", "hclk";
+		dmas = <&pdma 10>;
+		dma-names = "tx";
+		pinctrl-names = "default";
+		pinctrl-0 = <&spdif_tx>;
+		status = "disabled";
+	};
+
 	i2s2: i2s2@100e0000 {
 		compatible = "rockchip,rk3228-i2s", "rockchip,rk3066-i2s";
 		reg = <0x100e0000 0x4000>;
@@ -835,6 +848,12 @@ pwm3_pin: pwm3-pin {
 			};
 		};
 
+		spdif {
+			spdif_tx: spdif-tx {
+				rockchip,pins = <3 31 RK_FUNC_2 &pcfg_pull_none>;
+			};
+		};
+
 		tsadc {
 			otp_gpio: otp-gpio {
 				rockchip,pins = <0 24 RK_FUNC_GPIO &pcfg_pull_none>;