diff --git a/arch/arm/boot/dts/r8a7745.dtsi b/arch/arm/boot/dts/r8a7745.dtsi
index 3f88a7e34af2..3b413658eb8d 100644
--- a/arch/arm/boot/dts/r8a7745.dtsi
+++ b/arch/arm/boot/dts/r8a7745.dtsi
@@ -1506,7 +1506,6 @@ vsp@fe930000 {
 		du: display@feb00000 {
 			compatible = "renesas,du-r8a7745";
 			reg = <0 0xfeb00000 0 0x40000>;
-			reg-names = "du";
 			interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>;