diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index 4b09e740b58a..d6a2644d0b48 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -386,7 +386,6 @@ usi_uart: usi@10a000c0 {
 			serial_0: serial@10a00000 {
 				compatible = "google,gs101-uart";
 				reg = <0x10a00000 0xc0>;
-				reg-io-width = <4>;
 				interrupts = <GIC_SPI 634
 					      IRQ_TYPE_LEVEL_HIGH 0>;
 				clocks = <&dummy_clk 0>, <&dummy_clk 0>;