diff --git a/arch/arm/boot/dts/imx28-m28evk.dts b/arch/arm/boot/dts/imx28-m28evk.dts
index 3bab6b00c52d..6ce3d17c3a29 100644
--- a/arch/arm/boot/dts/imx28-m28evk.dts
+++ b/arch/arm/boot/dts/imx28-m28evk.dts
@@ -177,6 +177,7 @@
 
 			lradc@80050000 {
 				status = "okay";
+				fsl,lradc-touchscreen-wires = <4>;
 			};
 
 			duart: serial@80074000 {