ARM: dts: rockchip: Add spdif node for RK3128

The SoC has a S/PDIF TX controller which is fully compatible with older
generation Rockchip SoCs.

Signed-off-by: Alex Bee <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Heiko Stuebner <[email protected]>

Author: knaerzche

arch/arm/boot/dts/rockchip/rk3128.dtsi

@@ -411,6 +411,20 @@
 		status = "disabled";
 	};
 
+	spdif: spdif@10204000 {
+		compatible = "rockchip,rk3128-spdif", "rockchip,rk3066-spdif";
+		reg = <0x10204000 0x1000>;
+		interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru SCLK_SPDIF>, <&cru HCLK_SPDIF>;
+		clock-names = "mclk", "hclk";
+		dmas = <&pdma 13>;
+		dma-names = "tx";
+		pinctrl-names = "default";
+		pinctrl-0 = <&spdif_tx>;
+		#sound-dai-cells = <0>;
+		status = "disabled";
+	};
+
 	sdmmc: mmc@10214000 {
 		compatible = "rockchip,rk3128-dw-mshc", "rockchip,rk3288-dw-mshc";
 		reg = <0x10214000 0x4000>;