[PATCH 2/3] ARM: dts: r8a7742-iwg21d-q7: Enable SGTL5000 audio codec

[Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>]

This patch enables SGTL5000 audio codec on the carrier board.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@xxxxxxxxxxxxxx>
---
 arch/arm/boot/dts/r8a7742-iwg21d-q7.dts | 37 +++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts b/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts
index f62485a..d6154fd 100644
--- a/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts
+++ b/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts
@@ -23,6 +23,20 @@
 		stdout-path = "serial2:115200n8";
 	};
 
+	audio_clock: audio_clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <26000000>;
+	};
+
+	reg_1p5v: 1p5v {
+		compatible = "regulator-fixed";
+		regulator-name = "1P5V";
+		regulator-min-microvolt = <1500000>;
+		regulator-max-microvolt = <1500000>;
+		regulator-always-on;
+	};
+
 	vcc_sdhi2: regulator-vcc-sdhi2 {
 		compatible = "regulator-fixed";
 
@@ -67,6 +81,24 @@
 	status = "okay";
 };
 
+&i2c2 {
+	pinctrl-0 = <&i2c2_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+	clock-frequency = <400000>;
+
+	sgtl5000: codec@a {
+		compatible = "fsl,sgtl5000";
+		#sound-dai-cells = <0>;
+		reg = <0x0a>;
+		clocks = <&audio_clock>;
+		VDDA-supply = <&reg_3p3v>;
+		VDDIO-supply = <&reg_3p3v>;
+		VDDD-supply = <&reg_1p5v>;
+	};
+};
+
 &pci0 {
 	pinctrl-0 = <&usb0_pins>;
 	pinctrl-names = "default";
@@ -93,6 +125,11 @@
 		function = "avb";
 	};
 
+	i2c2_pins: i2c2 {
+		groups = "i2c2_b";
+		function = "i2c2";
+	};
+
 	scifa2_pins: scifa2 {
 		groups = "scifa2_data_c";
 		function = "scifa2";
-- 
2.7.4