diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 536db2d01e83..01cbfff619e0 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -603,7 +603,7 @@
 
 	usb_host0_ehci: usb@ff500000 {
 		compatible = "generic-ehci";
-		reg = <0x0 0xff500000 0x0 0x100>;
+		reg = <0x0 0xff500000 0x0 0x20000>;
 		interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru HCLK_USBHOST0>;
 		clock-names = "usbhost";