diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index e628d06..8ea7fda 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -420,6 +528,7 @@
 			interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
 			max-frequency = <150000000>;
 			status = "disabled";
+			bus-width = <0x4>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 		};