diff --git a/arch/arm/boot/dts/imx28-apf28dev.dts b/arch/arm/boot/dts/imx28-apf28dev.dts
index 3d905d16cbec6f3d3a87f62b6e597b7fe7f67705..b602494c152b3a82a89c544adffb761cf2a64820 100644
--- a/arch/arm/boot/dts/imx28-apf28dev.dts
+++ b/arch/arm/boot/dts/imx28-apf28dev.dts
@@ -103,6 +103,7 @@
 
 		apbx@80040000 {
 			lradc@80050000 {
+				fsl,lradc-touchscreen-wires = <4>;
 				status = "okay";
 			};