arm64: dts: imx8mn-bsh-smm-s2pro: Add tlv320aic31xx audio card node

BSH SystemMaster (SMM) S2 PRO board comes with an audio card based on
tlv320aic31xx family codec.

The audio card exposes two playback devices, one of them using the EASRC
(Enhanced Asynchronous Sample Rate Converter) module. Note that this
would require SDMA and EASRC firmware in order to work.
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2pro.dts

@@ -7,6 +7,7 @@
 /dts-v1/;
 
 #include "imx8mn-bsh-smm-s2-common.dtsi"
+#include <dt-bindings/sound/tlv320aic31xx.h>
 
 / {
 	model = "BSH SMM S2 PRO";
@@ -16,6 +17,65 @@ memory@40000000 {
 		device_type = "memory";
 		reg = <0x0 0x40000000 0x0 0x20000000>;
 	};
+
+	sound-tlv320aic31xx {
+		compatible = "fsl,imx-audio-tlv320aic31xx";
+		model = "tlv320aic31xx-hifi";
+		audio-cpu = <&sai3>;
+		audio-codec = <&tlv320dac3101>;
+		audio-asrc = <&easrc>;
+		audio-routing =
+			"Ext Spk", "SPL",
+			"Ext Spk", "SPR";
+		mclk-id = <PLL_CLKIN_BCLK>;
+	};
+
+	vdd_input: vdd_input {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_input";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+};
+
+&easrc {
+	fsl,asrc-rate = <48000>;
+	fsl,asrc-format = <10>;
+	status = "okay";
+};
+
+&i2c2 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	status = "okay";
+
+	tlv320dac3101: audio-codec@18 {
+		compatible = "ti,tlv320dac3101";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_dac_rst>;
+		reg = <0x18>;
+		#sound-dai-cells = <0>;
+		HPVDD-supply = <&buck4_reg>;
+		SPRVDD-supply = <&vdd_input>;
+		SPLVDD-supply = <&vdd_input>;
+		AVDD-supply = <&buck4_reg>;
+		IOVDD-supply = <&buck4_reg>;
+		DVDD-supply = <&buck5_reg>;
+		reset-gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
+		ai31xx-micbias-vg = <MICBIAS_AVDDV>;
+		clocks = <&clk IMX8MN_CLK_SAI3_ROOT>;
+	};
+};
+
+&sai3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sai3>;
+	assigned-clocks = <&clk IMX8MN_CLK_SAI3>;
+	assigned-clock-parents = <&clk IMX8MN_AUDIO_PLL1_OUT>;
+	assigned-clock-rates = <24576000>;
+	fsl,sai-mclk-direction-output;
+	status = "okay";
 };
 
 /* eMMC */
@@ -30,6 +90,36 @@ &usdhc1 {
 };
 
 &iomuxc {
+	pinctrl_dac_rst: dacrstgrp {
+		fsl,pins = <
+			MX8MN_IOMUXC_GPIO1_IO06_GPIO1_IO6		0x19 /* DAC_RST */
+		>;
+	};
+
+	pinctrl_espi2: espi2grp {
+		fsl,pins = <
+			MX8MN_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK		0x082
+			MX8MN_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI		0x082
+			MX8MN_IOMUXC_ECSPI2_MISO_ECSPI2_MISO		0x082
+			MX8MN_IOMUXC_ECSPI2_SS0_ECSPI2_SS0		0x040
+		>;
+	};
+
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX8MN_IOMUXC_I2C2_SCL_I2C2_SCL			0x400000c3
+			MX8MN_IOMUXC_I2C2_SDA_I2C2_SDA			0x400000c3
+		>;
+	};
+
+	pinctrl_sai3: sai3grp {
+		fsl,pins = <
+			MX8MN_IOMUXC_SAI3_TXFS_SAI3_TX_SYNC		0xd6
+			MX8MN_IOMUXC_SAI3_TXC_SAI3_TX_BCLK		0xd6
+			MX8MN_IOMUXC_SAI3_TXD_SAI3_TX_DATA0		0xd6
+		>;
+	};
+
 	pinctrl_usdhc1: usdhc1grp {
 		fsl,pins = <
 			MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK			0x40000090