ARM: dts: exynos: Enable HDMI audio support on Peach Pi

This patch adds new cpu, codec subnodes according to the updated
"google,snow-audio-max98091" DT bindings and the I2S clock tree
configuration so sound on the HDMI interface can be also supported.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/boot/dts/exynos5800-peach-pi.dts

@@ -11,6 +11,7 @@
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/clock/maxim,max77802.h>
 #include <dt-bindings/regulator/maxim,max77802.h>
+#include <dt-bindings/sound/samsung-i2s.h>
 #include "exynos5800.dtsi"
 #include "exynos5420-cpus.dtsi"
 
@@ -86,6 +87,14 @@ sound {
 		samsung,model = "Peach-Pi-I2S-MAX98091";
 		samsung,i2s-controller = <&i2s0>;
 		samsung,audio-codec = <&max98091>;
+
+		cpu {
+			sound-dai = <&i2s0 0>;
+		};
+
+		codec {
+			sound-dai = <&max98091>, <&hdmi>;
+		};
 	};
 
 	usb300_vbus_reg: regulator-usb300 {
@@ -142,6 +151,11 @@ &adc {
 	vdd-supply = <&ldo9_reg>;
 };
 
+&clock_audss {
+	assigned-clocks = <&clock_audss EXYNOS_MOUT_AUDSS>;
+	assigned-clock-parents = <&clock CLK_FOUT_EPLL>;
+};
+
 &cpu0 {
 	cpu-supply = <&buck2_reg>;
 };
@@ -606,6 +620,7 @@ max98091: codec@10 {
 		pinctrl-0 = <&max98091_irq>;
 		clocks = <&pmu_system_controller 0>;
 		clock-names = "mclk";
+		#sound-dai-cells = <0>;
 	};
 
 	light-sensor@44 {
@@ -658,6 +673,8 @@ &i2c_2 {
 };
 
 &i2s0 {
+	assigned-clocks = <&i2s0 CLK_I2S_RCLK_SRC>;
+	assigned-clock-parents = <&clock_audss EXYNOS_I2S_BUS>;
 	status = "okay";
 };