ARM: tegra: enable audio on Dalmore

Dalmore uses the RT5640 audio CODEC. Instantiate this on the I2C bus.
Enable the relevant Tegra I2C controller. Add the top-level "sound" node
to hook everything together, and provide a "sound card" device.
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/boot/dts/tegra114-dalmore.dts

@@ -729,6 +729,15 @@ battery: smart-battery {
 			sbs,poll-retry-count = <100>;
 			power-supplies = <&charger>;
 		};
+
+		rt5640: rt5640 {
+			compatible = "realtek,rt5640";
+			reg = <0x1c>;
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_GPIO(W, 3) GPIO_ACTIVE_HIGH>;
+			realtek,ldo1-en-gpios =
+				<&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
+		};
 	};
 
 	i2c@7000d000 {
@@ -843,6 +852,12 @@ pmc {
 		nvidia,invert-interrupt;
 	};
 
+	ahub {
+		i2s@70080400 {
+			status = "okay";
+		};
+	};
+
 	sdhci@78000400 {
 		cd-gpios = <&gpio TEGRA_GPIO(V, 2) GPIO_ACTIVE_LOW>;
 		bus-width = <4>;
@@ -937,4 +952,28 @@ vdd_hdmi_reg: regulator@5 {
 			vin-supply = <&tps65090_dcdc1_reg>;
 		};
 	};
+
+	sound {
+		compatible = "nvidia,tegra-audio-rt5640-dalmore",
+			     "nvidia,tegra-audio-rt5640";
+		nvidia,model = "NVIDIA Tegra Dalmore";
+
+		nvidia,audio-routing =
+			"Headphones", "HPOR",
+			"Headphones", "HPOL",
+			"Speakers", "SPORP",
+			"Speakers", "SPORN",
+			"Speakers", "SPOLP",
+			"Speakers", "SPOLN";
+
+		nvidia,i2s-controller = <&tegra_i2s1>;
+		nvidia,audio-codec = <&rt5640>;
+
+		nvidia,hp-det-gpios = <&gpio TEGRA_GPIO(R, 7) GPIO_ACTIVE_HIGH>;
+
+		clocks = <&tegra_car TEGRA114_CLK_PLL_A>,
+			 <&tegra_car TEGRA114_CLK_PLL_A_OUT0>,
+			 <&tegra_car TEGRA114_CLK_EXTERN1>;
+		clock-names = "pll_a", "pll_a_out0", "mclk";
+	};
 };