[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/include/dt-bindings/sound/tlv320aic31xx-micbias.h b/src/kernel/linux/v4.14/include/dt-bindings/sound/tlv320aic31xx-micbias.h
new file mode 100644
index 0000000..c6895a1
--- /dev/null
+++ b/src/kernel/linux/v4.14/include/dt-bindings/sound/tlv320aic31xx-micbias.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DT_TLV320AIC31XX_MICBIAS_H
+#define __DT_TLV320AIC31XX_MICBIAS_H
+
+#define MICBIAS_2_0V 1
+#define MICBIAS_2_5V 2
+#define MICBIAS_AVDDV 3
+
+#endif /* __DT_TLV320AIC31XX_MICBIAS_H */