arm64: dts: allwinner: a64: enable sound on Pinebook

The Pinebook has a headphone jack tied to the HP headphone output of
the SoC, and internal speakers connected to the LINEOUT of the SoC,
through a standalone amplifier.

This commit enables I2S, digital and analog parts of audio codec on
Pinebook, along with a device node for the external amplifier.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
[wens@csie.org: dropped headphone_amp; added headphone amp regulator supply;
		fixed speaker_amp node name and sound-name-prefix name]
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>

arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts

@@ -74,6 +74,32 @@
 		compatible = "mmc-pwrseq-simple";
 		reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 */
 	};
+
+	speaker_amp: audio-amplifier {
+		compatible = "simple-audio-amplifier";
+		/*
+		 * TODO This is actually a fixed regulator controlled by
+		 * the GPIO line on the PMIC. This should be corrected
+		 * once GPIO support is added for this PMIC.
+		 */
+		VCC-supply = <&reg_ldo_io0>;
+		enable-gpios = <&pio 7 7 GPIO_ACTIVE_HIGH>; /* PH7 */
+		sound-name-prefix = "Speaker Amp";
+	};
+
+};
+
+&codec {
+	status = "okay";
+};
+
+&codec_analog {
+	hpvcc-supply = <&reg_eldo1>;
+	status = "okay";
+};
+
+&dai {
+	status = "okay";
 };
 
 &ehci0 {
@@ -277,6 +303,29 @@
 	vcc-hdmi-supply = <&reg_dldo1>;
 };
 
+&sound {
+	status = "okay";
+	simple-audio-card,aux-devs = <&codec_analog>, <&speaker_amp>;
+	simple-audio-card,widgets = "Microphone", "Internal Microphone Left",
+				    "Microphone", "Internal Microphone Right",
+				    "Headphone", "Headphone Jack",
+				    "Speaker", "Internal Speaker";
+	simple-audio-card,routing =
+			"Left DAC", "AIF1 Slot 0 Left",
+			"Right DAC", "AIF1 Slot 0 Right",
+			"Speaker Amp INL", "LINEOUT",
+			"Speaker Amp INR", "LINEOUT",
+			"Internal Speaker", "Speaker Amp OUTL",
+			"Internal Speaker", "Speaker Amp OUTR",
+			"Headphone Jack", "HP",
+			"AIF1 Slot 0 Left ADC", "Left ADC",
+			"AIF1 Slot 0 Right ADC", "Right ADC",
+			"Internal Microphone Left", "MBIAS",
+			"MIC1", "Internal Microphone Left",
+			"Internal Microphone Right", "HBIAS",
+			"MIC2", "Internal Microphone Right";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pb_pins>;