arm64: dts: renesas: ulcb-kf: add pcm3168 sound codec

KingFisher has pcm3168 sound codec. This patch enables it.
Because pcm3168 can't handle symmetric channel on playback/
capture, we need to handle it as different DAI.

Signed-off-by: Kuninori Morimoto <[email protected]>
Signed-off-by: Simon Horman <[email protected]>

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

@@ -6,11 +6,38 @@
  * Copyright (C) 2017 Cogent Embedded, Inc.
  */
 
+/*
+ * SSI-PCM3168A
+ *	aplay   -D plughw:0,2 xxx.wav
+ *	arecord -D plughw:0,3 xxx.wav
+ */
+
 / {
 	aliases {
 		serial1 = &hscif0;
 		serial2 = &scif1;
 	};
+
+	clksndsel: clksndsel {
+		#clock-cells = <0>;
+		compatible = "gpio-mux-clock";
+		clocks = <&cs2000>, <&audio_clk_a>; /* clk8snd, clksnd */
+		select-gpios = <&gpio_exp_75 13 GPIO_ACTIVE_HIGH>;
+	};
+
+	snd_3p3v: regulator-snd_3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "snd-3.3v";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	snd_vcc5v: regulator-snd_vcc5v {
+		compatible = "regulator-fixed";
+		regulator-name = "snd-vcc5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
 };
 
 &can0 {
@@ -44,6 +71,7 @@
 };
 
 &i2c2 {
+	/* U11 */
 	gpio_exp_74: gpio@74 {
 		compatible = "ti,tca9539";
 		reg = <0x74>;
@@ -53,6 +81,13 @@
 		interrupt-parent = <&gpio6>;
 		interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
 
+		audio_out_off {
+			gpio-hog;
+			gpios = <0 GPIO_ACTIVE_HIGH>; /* P00 */
+			output-high;
+			line-name = "Audio_Out_OFF";
+		};
+
 		hub_pwen {
 			gpio-hog;
 			gpios = <6 GPIO_ACTIVE_HIGH>;
@@ -80,8 +115,16 @@
 			output-high;
 			line-name = "OTG EXTLPn";
 		};
+
+		snd_rst {
+			gpio-hog;
+			gpios = <15 GPIO_ACTIVE_HIGH>; /* P17 */
+			output-high;
+			line-name = "SND_RST";
+		};
 	};
 
+	/* U5 */
 	gpio_exp_75: gpio@75 {
 		compatible = "ti,tca9539";
 		reg = <0x75>;
@@ -98,6 +141,48 @@
 		#size-cells = <0>;
 		reg = <0x71>;
 		reset-gpios = <&gpio5 3 GPIO_ACTIVE_LOW>;
+
+		/* Audio_SDA, Audio_SCL */
+		i2c@7 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <7>;
+
+			pcm3168a: audio-codec@44 {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm3168a";
+				reg = <0x44>;
+				clocks = <&clksndsel>;
+				clock-names = "scki";
+
+				VDD1-supply	= <&snd_3p3v>;
+				VDD2-supply	= <&snd_3p3v>;
+				VCCAD1-supply	= <&snd_vcc5v>;
+				VCCAD2-supply	= <&snd_vcc5v>;
+				VCCDA1-supply	= <&snd_vcc5v>;
+				VCCDA2-supply	= <&snd_vcc5v>;
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					mclk-fs = <512>;
+					port@0 {
+						reg = <0>;
+						pcm3168a_endpoint_p: endpoint {
+							remote-endpoint = <&rsnd_for_pcm3168a_play>;
+							clocks = <&clksndsel>;
+						};
+					};
+					port@1 {
+						reg = <1>;
+						pcm3168a_endpoint_c: endpoint {
+							remote-endpoint = <&rsnd_for_pcm3168a_capture>;
+							clocks = <&clksndsel>;
+						};
+					};
+				};
+			};
+		};
 	};
 };
 
@@ -173,6 +258,11 @@
 		groups = "usb0";
 		function = "usb0";
 	};
+
+	sound_pcm_pins: sound-pcm {
+		groups = "ssi349_ctrl", "ssi3_data", "ssi4_data";
+		function = "ssi";
+	};
 };
 
 &scif1 {
@@ -193,3 +283,51 @@
 &xhci0 {
 	status = "okay";
 };
+
+&sound_card {
+	dais = <&rsnd_port0	/* ak4613 */
+		&rsnd_port1	/* HDMI0  */
+		&rsnd_port2	/* pcm3168a playback */
+		&rsnd_port3	/* pcm3168a capture  */
+		>;
+};
+
+&rcar_sound {
+	pinctrl-0 = <&sound_pins
+		     &sound_clk_pins
+		     &sound_pcm_pins>;
+
+	ports {
+		/* rsnd_port0/1 are on salvator-common */
+		rsnd_port2: port@2 {
+			reg = <2>;
+			rsnd_for_pcm3168a_play: endpoint {
+				remote-endpoint = <&pcm3168a_endpoint_p>;
+
+				dai-format = "i2s";
+				bitclock-master = <&rsnd_for_pcm3168a_play>;
+				frame-master = <&rsnd_for_pcm3168a_play>;
+				dai-tdm-slot-num = <8>;
+
+				playback = <&ssi3>;
+			};
+		};
+		rsnd_port3: port@3 {
+			reg = <3>;
+			rsnd_for_pcm3168a_capture: endpoint {
+				remote-endpoint = <&pcm3168a_endpoint_c>;
+
+				dai-format = "i2s";
+				bitclock-master = <&rsnd_for_pcm3168a_capture>;
+				frame-master = <&rsnd_for_pcm3168a_capture>;
+				dai-tdm-slot-num = <6>;
+
+				capture  = <&ssi4>;
+			};
+		};
+	};
+};
+
+&ssi4 {
+	shared-pin;
+};