arm64: dts: librem5: add digital mic routing

Enable the digital mics

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>

arch/arm64/boot/dts/freescale/imx8mq-librem5.dts

@@ -424,21 +424,18 @@ sound {
 		simple-audio-card,name = "wm8962";
 		simple-audio-card,format = "i2s";
 		simple-audio-card,widgets =
-		        "Headphone", "Headphone Jack";
-#if 0
-		        "Microphone", "Microphone Jack",
-			"Speaker", "Speaker Ext",
-		        "Line", "Line In Jack";
-#endif
+		        "Headphone", "Headphone",
+		        "Microphone", "Headset Mic",
+			"Microphone", "Digital Mic",
+			"Speaker", "Speaker";
 		simple-audio-card,routing =
-		        /* sink - source pairs */
-			"Headphone Jack", "HPOUT";
-		#if 0
-		        "MIC_IN", "Microphone Jack",
-			"Microphone Jack", "Mic Bias",
-		        "LINE_IN", "Line In Jack",
-			"Speaker Ext", "LINE_OUT";
-		#endif
+			"Headphone", "HPOUTL",
+			"Headphone", "HPOUTR",
+			"Speaker", "SPKOUTL",
+			"Speaker", "SPKOUTR",
+			"Headset Mic", "MICBIAS",
+			"IN3R", "Headset Mic",
+			"DMICDAT", "Digital Mic";
 		simple-audio-card,cpu {
 			sound-dai = <&sai2>;
 		};
@@ -793,6 +790,7 @@ codec: wm8962@1a {
 		assigned-clock-rates = <22579200>;
 		//assigned-clock-rates = <24576000>;
                 #sound-dai-cells = <0>;
+		mic-cfg = <0x200>;
 #if defined( AUDIO_REGULATOR )
                 DCVDD-supply = <&reg_aud_1v8>;
                 DBVDD-supply = <&reg_aud_1v8>;
@@ -805,11 +803,11 @@ codec: wm8962@1a {
 #endif
                 gpio-cfg = <
                         0x0000 /* n/c */
-                        0x0000 /* gpio2, 1: default */
-                        0x0000 /* gpio3, 2: todo: dmicclk, 1_0011 */
+                        0x0001 /* gpio2, 1: default */
+                        0x0013 /* gpio3, 2: dmicclk */
                         0x0000 /* n/c, 3: default */
-                        0x0000 /* gpio5, 4: default */
-                        0x0000 /* gpio6, 5: dmic_dat, 1_0100 */
+                        0x8014 /* gpio5, 4: dmic_dat */
+                        0x0000 /* gpio6, 5: default */
                 >;
 		status = "okay";
         };