arm64: dts: imx8mm: Add node for SPDIF

The i.MX8M Mini can support SPDIF which is compatible to the
IP used on the i.MX35.  Add the node.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mm.dtsi

@@ -358,6 +358,30 @@ micfil: audio-controller@30080000 {
 				status = "disabled";
 			};
 
+			spdif1: spdif@30090000 {
+				compatible = "fsl,imx35-spdif";
+				reg = <0x30090000 0x10000>;
+				interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MM_CLK_AUDIO_AHB>, /* core */
+					 <&clk IMX8MM_CLK_24M>, /* rxtx0 */
+					 <&clk IMX8MM_CLK_SPDIF1>, /* rxtx1 */
+					 <&clk IMX8MM_CLK_DUMMY>, /* rxtx2 */
+					 <&clk IMX8MM_CLK_DUMMY>, /* rxtx3 */
+					 <&clk IMX8MM_CLK_DUMMY>, /* rxtx4 */
+					 <&clk IMX8MM_CLK_AUDIO_AHB>, /* rxtx5 */
+					 <&clk IMX8MM_CLK_DUMMY>, /* rxtx6 */
+					 <&clk IMX8MM_CLK_DUMMY>, /* rxtx7 */
+					 <&clk IMX8MM_CLK_DUMMY>; /* spba */
+				clock-names = "core", "rxtx0",
+					      "rxtx1", "rxtx2",
+					      "rxtx3", "rxtx4",
+					      "rxtx5", "rxtx6",
+					      "rxtx7", "spba";
+				dmas = <&sdma2 28 18 0>, <&sdma2 29 18 0>;
+				dma-names = "rx", "tx";
+				status = "disabled";
+			};
+
 			gpio1: gpio@30200000 {
 				compatible = "fsl,imx8mm-gpio", "fsl,imx35-gpio";
 				reg = <0x30200000 0x10000>;