arm64: dts: meson: add audio playback to odroid-c4

Add initial audio support limited to HDMI i2s.
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20200718072532.8427-2-christianshewitt@gmail.com

arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts

@@ -8,6 +8,7 @@
 #include "meson-sm1.dtsi"
 #include <dt-bindings/gpio/meson-g12a-gpio.h>
 #include <dt-bindings/leds/common.h>
+#include <dt-bindings/sound/meson-g12a-tohdmitx.h>
 
 / {
 	compatible = "hardkernel,odroid-c4", "amlogic,sm1";
@@ -186,6 +187,69 @@ hdmi_connector_in: endpoint {
 			};
 		};
 	};
+
+	sound {
+		compatible = "amlogic,axg-sound-card";
+		model = "SM1-ODROID-C4";
+		audio-aux-devs = <&tdmout_b>;
+		audio-routing = "TDMOUT_B IN 0", "FRDDR_A OUT 1",
+				"TDMOUT_B IN 1", "FRDDR_B OUT 1",
+				"TDMOUT_B IN 2", "FRDDR_C OUT 1",
+				"TDM_B Playback", "TDMOUT_B OUT";
+
+		assigned-clocks = <&clkc CLKID_MPLL2>,
+				  <&clkc CLKID_MPLL0>,
+				  <&clkc CLKID_MPLL1>;
+		assigned-clock-parents = <0>, <0>, <0>;
+		assigned-clock-rates = <294912000>,
+				       <270950400>,
+				       <393216000>;
+		status = "okay";
+
+		dai-link-0 {
+			sound-dai = <&frddr_a>;
+		};
+
+		dai-link-1 {
+			sound-dai = <&frddr_b>;
+		};
+
+		dai-link-2 {
+			sound-dai = <&frddr_c>;
+		};
+
+		/* 8ch hdmi interface */
+		dai-link-3 {
+			sound-dai = <&tdmif_b>;
+			dai-format = "i2s";
+			dai-tdm-slot-tx-mask-0 = <1 1>;
+			dai-tdm-slot-tx-mask-1 = <1 1>;
+			dai-tdm-slot-tx-mask-2 = <1 1>;
+			dai-tdm-slot-tx-mask-3 = <1 1>;
+			mclk-fs = <256>;
+
+			codec {
+				sound-dai = <&tohdmitx TOHDMITX_I2S_IN_B>;
+			};
+		};
+
+		/* hdmi glue */
+		dai-link-4 {
+			sound-dai = <&tohdmitx TOHDMITX_I2S_OUT>;
+
+			codec {
+				sound-dai = <&hdmi_tx>;
+			};
+		};
+	};
+};
+
+&arb {
+	status = "okay";
+};
+
+&clkc_audio {
+	status = "okay";
 };
 
 &cpu0 {
@@ -237,6 +301,18 @@ &ethmac {
 	amlogic,tx-delay-ns = <2>;
 };
 
+&frddr_a {
+	status = "okay";
+};
+
+&frddr_b {
+	status = "okay";
+};
+
+&frddr_c {
+	status = "okay";
+};
+
 &gpio {
 	gpio-line-names =
 		/* GPIOZ */
@@ -381,6 +457,18 @@ &sd_emmc_c {
 	vqmmc-supply = <&flash_1v8>;
 };
 
+&tdmif_b {
+	status = "okay";
+};
+
+&tdmout_b {
+	status = "okay";
+};
+
+&tohdmitx {
+	status = "okay";
+};
+
 &uart_AO {
 	status = "okay";
 	pinctrl-0 = <&uart_ao_a_pins>;