diff --git a/arch/arm/dts/sun50i-a64-pinephone-1.0.dts b/arch/arm/dts/sun50i-a64-pinephone-1.0.dts
index fb65319..219f720 100644
--- a/arch/arm/dts/sun50i-a64-pinephone-1.0.dts
+++ b/arch/arm/dts/sun50i-a64-pinephone-1.0.dts
@@ -10,6 +10,10 @@
 	compatible = "pine64,pinephone-1.0", "pine64,pinephone", "allwinner,sun50i-a64";
 };
 
+&codec_analog {
+	allwinner,internal-bias-resistor;
+};
+
 &sgm3140 {
 	enable-gpios = <&pio 2 3 GPIO_ACTIVE_HIGH>; /* PC3 */
 	flash-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* PD24 */