arm64: dts: meson-sm1: add spdifin and pdifout nodes

Add spdifin spdifout nodes for Amlogic SM1 SoCs.
Signed-off-by: Artem Lapkin <art@khadas.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
[narmstrong: subject and DT fixups from mailing-list review]
Link: https://lore.kernel.org/r/20211215030236.340841-1-art@khadas.com

arch/arm64/boot/dts/amlogic/meson-sm1.dtsi

@@ -356,6 +356,33 @@ tdmin_lb: audio-controller@3c0 {
 			status = "disabled";
 		};
 
+		spdifin: audio-controller@400 {
+			compatible = "amlogic,g12a-spdifin",
+				     "amlogic,axg-spdifin";
+			reg = <0x0 0x400 0x0 0x30>;
+			#sound-dai-cells = <0>;
+			sound-name-prefix = "SPDIFIN";
+			interrupts = <GIC_SPI 151 IRQ_TYPE_EDGE_RISING>;
+			clocks = <&clkc_audio AUD_CLKID_SPDIFIN>,
+			<&clkc_audio AUD_CLKID_SPDIFIN_CLK>;
+			clock-names = "pclk", "refclk";
+			resets = <&clkc_audio AUD_RESET_SPDIFIN>;
+			status = "disabled";
+		};
+
+		spdifout_a: audio-controller@480 {
+			compatible = "amlogic,g12a-spdifout",
+				     "amlogic,axg-spdifout";
+			reg = <0x0 0x480 0x0 0x50>;
+			#sound-dai-cells = <0>;
+			sound-name-prefix = "SPDIFOUT_A";
+			clocks = <&clkc_audio AUD_CLKID_SPDIFOUT>,
+			<&clkc_audio AUD_CLKID_SPDIFOUT_CLK>;
+			clock-names = "pclk", "mclk";
+			resets = <&clkc_audio AUD_RESET_SPDIFOUT>;
+			status = "disabled";
+		};
+
 		tdmout_a: audio-controller@500 {
 			compatible = "amlogic,sm1-tdmout";
 			reg = <0x0 0x500 0x0 0x40>;