arm64: dts: renesas: ulcb: add HDMI sound support

This patch adds missing ULCB HDMI sound support.
To use sound card, HDMI video is mandatory.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/ulcb.dtsi

@@ -6,6 +6,14 @@
  * Copyright (C) 2016 Cogent Embedded, Inc.
  */
 
+/*
+ * SSI-AK4613
+ *	aplay   -D plughw:0,0 xxx.wav
+ *	arecord -D plughw:0,0 xxx.wav
+ * SSI-HDMI
+ *	aplay   -D plughw:0,1 xxx.wav
+ */
+
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 
@@ -87,7 +95,9 @@ sound_card: sound {
 		compatible = "audio-graph-card";
 		label = "rcar-sound";
 
-		dais = <&rsnd_port0>;
+		dais = <&rsnd_port0	/* ak4613 */
+			&rsnd_port1	/* HDMI0  */
+			>;
 	};
 
 	vcc_sdhi0: regulator-vcc-sdhi0 {
@@ -173,6 +183,12 @@ rcar_dw_hdmi0_out: endpoint {
 				remote-endpoint = <&hdmi0_con>;
 			};
 		};
+		port@2 {
+			reg = <2>;
+			dw_hdmi0_snd_in: endpoint {
+				remote-endpoint = <&rsnd_for_hdmi>;
+			};
+		};
 	};
 };
 
@@ -382,7 +398,10 @@ &rcar_sound {
 		 <&cpg CPG_CORE CPG_AUDIO_CLK_I>;
 
 	ports {
-		rsnd_port0: port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		rsnd_port0: port@0 {
+			reg = <0>;
 			rsnd_for_ak4613: endpoint {
 				remote-endpoint = <&ak4613_endpoint>;
 
@@ -394,6 +413,18 @@ rsnd_for_ak4613: endpoint {
 				capture  = <&ssi1 &src1 &dvc1>;
 			};
 		};
+		rsnd_port1: port@1 {
+			reg = <1>;
+			rsnd_for_hdmi: endpoint {
+				remote-endpoint = <&dw_hdmi0_snd_in>;
+
+				dai-format = "i2s";
+				bitclock-master = <&rsnd_for_hdmi>;
+				frame-master = <&rsnd_for_hdmi>;
+
+				playback = <&ssi2>;
+			};
+		};
 	};
 };