arm64: dts: imx8mn-evk: add bt-sco sound card support

Add bt-sco sound card, which supports wb profile as default
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi

@@ -47,6 +47,11 @@ ir-receiver {
 		linux,autosuspend-period = <125>;
 	};
 
+	audio_codec_bt_sco: audio-codec-bt-sco {
+		compatible = "linux,bt-sco";
+		#sound-dai-cells = <1>;
+	};
+
 	wm8524: audio-codec {
 		#sound-dai-cells = <0>;
 		compatible = "wlf,wm8524";
@@ -57,6 +62,25 @@ wm8524: audio-codec {
 		clock-names = "mclk";
 	};
 
+	sound-bt-sco {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "bt-sco-audio";
+		simple-audio-card,format = "dsp_a";
+		simple-audio-card,bitclock-inversion;
+		simple-audio-card,frame-master = <&btcpu>;
+		simple-audio-card,bitclock-master = <&btcpu>;
+
+		btcpu: simple-audio-card,cpu {
+			sound-dai = <&sai2>;
+			dai-tdm-slot-num = <2>;
+			dai-tdm-slot-width = <16>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&audio_codec_bt_sco 1>;
+		};
+	};
+
 	sound-wm8524 {
 		compatible = "fsl,imx-audio-wm8524";
 		model = "wm8524-audio";
@@ -183,6 +207,16 @@ pca6416: gpio@20 {
 	};
 };
 
+&sai2 {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sai2>;
+	assigned-clocks = <&clk IMX8MN_CLK_SAI2>;
+	assigned-clock-parents = <&clk IMX8MN_AUDIO_PLL1_OUT>;
+	assigned-clock-rates = <24576000>;
+	status = "okay";
+};
+
 &sai3 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_sai3>;
@@ -354,6 +388,15 @@ MX8MN_IOMUXC_SD2_RESET_B_GPIO2_IO19	0x41
 		>;
 	};
 
+	pinctrl_sai2: sai2grp {
+		fsl,pins = <
+			MX8MN_IOMUXC_SAI2_TXC_SAI2_TX_BCLK      0xd6
+			MX8MN_IOMUXC_SAI2_TXFS_SAI2_TX_SYNC     0xd6
+			MX8MN_IOMUXC_SAI2_TXD0_SAI2_TX_DATA0    0xd6
+			MX8MN_IOMUXC_SAI2_RXD0_SAI2_RX_DATA0    0xd6
+		>;
+	};
+
 	pinctrl_sai3: sai3grp {
 		fsl,pins = <
 			MX8MN_IOMUXC_SAI3_TXFS_SAI3_TX_SYNC     0xd6