ARM: dts: am335x-evmsk: Audio support

AM335x EVM-SK have only support for audio playback (stereo jack on the
board) via tlv320aic3106 codec connected to McASP1.
Enable the support for audio playback on the board:
- McASP1 configuration
- tlv320aic3106 configuration
- Machine driver.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>

arch/arm/boot/dts/am335x-evmsk.dts

@@ -115,6 +115,17 @@ backlight {
 		brightness-levels = <0 58 61 66 75 90 125 170 255>;
 		default-brightness-level = <8>;
 	};
+
+	sound {
+		compatible = "ti,da830-evm-audio";
+		ti,model = "AM335x-EVMSK";
+		ti,audio-codec = <&tlv320aic3106>;
+		ti,mcasp-controller = <&mcasp1>;
+		ti,codec-clock-rate = <24576000>;
+		ti,audio-routing =
+			"Headphone Jack",       "HPLOUT",
+			"Headphone Jack",       "HPROUT";
+	};
 };
 
 &am33xx_pinmux {
@@ -244,6 +255,15 @@ davinci_mdio_sleep: davinci_mdio_sleep {
 			0x14c (PIN_INPUT_PULLDOWN | MUX_MODE7)
 		>;
 	};
+
+	mcasp1_pins: mcasp1_pins {
+		pinctrl-single,pins = <
+			0x10c (PIN_INPUT_PULLDOWN | MUX_MODE4) /* mii1_crs.mcasp1_aclkx */
+			0x110 (PIN_INPUT_PULLDOWN | MUX_MODE4) /* mii1_rxerr.mcasp1_fsx */
+			0x108 (PIN_OUTPUT_PULLDOWN | MUX_MODE4) /* mii1_col.mcasp1_axr2 */
+			0x144 (PIN_INPUT_PULLDOWN | MUX_MODE4) /* rmii1_ref_clk.mcasp1_axr3 */
+		>;
+	};
 };
 
 &uart0 {
@@ -291,6 +311,18 @@ lis331dlh: lis331dlh@18 {
 		st,max-limit-y = <550>;
 		st,max-limit-z = <750>;
 	};
+
+	tlv320aic3106: tlv320aic3106@1b {
+		compatible = "ti,tlv320aic3106";
+		reg = <0x1b>;
+		status = "okay";
+
+		/* Regulators */
+		AVDD-supply = <&vaux2_reg>;
+		IOVDD-supply = <&vaux2_reg>;
+		DRVDD-supply = <&vaux2_reg>;
+		DVDD-supply = <&vbat>;
+	};
 };
 
 &usb {
@@ -437,3 +469,19 @@ &aes {
 &gpio0 {
 	ti,no-reset-on-init;
 };
+
+&mcasp1 {
+		pinctrl-names = "default";
+		pinctrl-0 = <&mcasp1_pins>;
+
+		status = "okay";
+
+		op-mode = <0>;          /* MCASP_IIS_MODE */
+		tdm-slots = <2>;
+		/* 4 serializers */
+		serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
+			0 0 1 2
+		>;
+		tx-num-evt = <1>;
+		rx-num-evt = <1>;
+};