diff --git a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
index 8da939a..934655f 100644
--- a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+++ b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
@@ -85,6 +85,7 @@
 		green {
 			label = "cubietruck:green:usr";
 			gpios = <&pio 7 7 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "mmc0";
 		};
 	};