[C26] add SGTL5000 audio support

Tested on carrier CSA42REVB with audio card CSA74REVA over CN28

arch/arm64/boot/dts/seco/seco-imx8qm-c26.dts

@@ -220,7 +220,7 @@
         sys_mclk: clock-mclk {
                 compatible = "fixed-clock";
                 #clock-cells = <0>;
-                clock-frequency = <22579200>;
+                clock-frequency = <24576000>;
         };
 
         reg_1p8v: regulator-1p8v {
@@ -232,15 +232,22 @@
         };
 
 	sound {
-		 compatible = "seco,asoc-sgtl5000";
-                model = "seco_sgtl5000";
-                cpu-dai = <&sai1>;
-                audio-codec = <&codec>;
-                /*asrc-controller = <&asrc0>;*/
-                status = "okay";
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "sgtl5000-audio";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,frame-master = <&codecdai>;
+		simple-audio-card,bitclock-master = <&codecdai>;
+
+		cpudai: simple-audio-card,cpu {
+			sound-dai = <&sai1>;
+		};
 
+		codecdai: simple-audio-card,codec {
+			sound-dai = <&sgtl5000>;
+			system-clock-frequency = <24576000>;
+		};
 	};
-	
+
 	sound_amixtx: sound-amix-tx {
 	};
 	
@@ -419,15 +426,14 @@
 	pinctrl-0 = <&pinctrl_i2c3>;
 	status = "okay";
 
-        codec: sgtl5000@a {
-                #sound-dai-cells = <0>;
-                compatible = "fsl,sgtl5000";
-                reg = <0xa>;
-                VDDA-supply = <&reg_1p8v>;
-                VDDIO-supply = <&reg_1p8v>;
+	sgtl5000: sgtl5000@a {
+		#sound-dai-cells = <0>;
+		compatible = "fsl,sgtl5000";
+		reg = <0xa>;
+		VDDA-supply = <&reg_1p8v>;
+		VDDIO-supply = <&reg_1p8v>;
 		clocks = <&sys_mclk>;
-        };
-
+	};
 };
 
 
@@ -878,11 +884,12 @@ ldb1_backlight: lvds_backlight@0 {
 
 
 &sai1 {
+	#sound-dai-cells = <0>;
         assigned-clocks = <&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_PLL>,
                         <&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_SLV_BUS>,
                         <&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_MST_BUS>,
                         <&sai1_lpcg 0>; /* FIXME: should be sai1, original code is 0 */
-        assigned-clock-rates = <786432000>, <49152000>, <12288000>, <49152000>;
+        assigned-clock-rates = <786432000>, <49152000>, <24576000>, <24576000>;
         pinctrl-names = "default";
         pinctrl-0 = <&pinctrl_sai1>;
         status = "okay";