Sound node recovered from Pull Request #408
Node name changed in line with tinkerboard & xt-q8l, cf. issue #1367
Also added missing i2s node, cf. http://rockchip.wikidot.com/hdmi-audio

From b5d066aba887ebd5963da588d0229d356f1ae79a Mon Sep 17 00:00:00 2001
From: Sebastian <nitroshift@yahoo.com>
Date: Wed, 14 Mar 2018 12:49:45 +0200
Subject: [PATCH] MIQI-DTS-enable-sound-node

Add missing sound node in rk3288-miqi.dts. Compile and run-tested on miqi device with kernel 4.16.0-rc5.

---
diff --git a/arch/arm/boot/dts/rk3288-miqi.dts b/arch/arm/boot/dts/rk3288-miqi.dts
index dd785c7..5824ee7 100644
--- a/arch/arm/boot/dts/rk3288-miqi.dts
+++ b/arch/arm/boot/dts/rk3288-miqi.dts
@@ -57,6 +57,23 @@
 		reg = <0x0 0x0 0x0 0x80000000>;
 	};
 
+	sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,name = "DW-I2S-HDMI";
+		simple-audio-card,mclk-fs = <512>;
+
+		simple-audio-card,dai-link@0 {  /* I2S - S/PDIF */
+			format = "i2s";
+			cpu {
+				sound-dai = <&i2s>;
+			};
+			codec {
+				sound-dai = <&hdmi>;
+			};
+		};
+	};
+
 	ext_gmac: external-gmac-clock {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
@@ -136,10 +153,18 @@
 };
 
 &hdmi {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	#sound-dai-cells = <0>;
 	ddc-i2c-bus = <&i2c5>;
 	status = "okay";
 };
 
+&i2s {
+	#sound-dai-cells = <0>;
+	status = "okay";
+};
+
 &i2c0 {
 	clock-frequency = <400000>;
 	status = "okay";
--
2.14.1