diff --git a/arch/arm/boot/dts/nspire.dtsi b/arch/arm/boot/dts/nspire.dtsi
index ec2283b1a638e028d28e57d53e8a7dd9fc2c2778..1a5ae4cd107f08294c4bddce41d7369a76fa9ecd 100644
--- a/arch/arm/boot/dts/nspire.dtsi
+++ b/arch/arm/boot/dts/nspire.dtsi
@@ -56,6 +56,7 @@ apb_pclk: apb_pclk {
 
 	usb_phy: usb_phy {
 		compatible = "usb-nop-xceiv";
+		#phy-cells = <0>;
 	};
 
 	vbus_reg: vbus_reg {