diff --git a/arch/arm/boot/dts/nuvoton-npcm730-gsj.dts b/arch/arm/boot/dts/nuvoton-npcm730-gsj.dts
index 801ed73d962cbd..5ceffd6724f496 100644
--- a/arch/arm/boot/dts/nuvoton-npcm730-gsj.dts
+++ b/arch/arm/boot/dts/nuvoton-npcm730-gsj.dts
@@ -78,6 +78,7 @@
 			status = "okay";
 			spi-nor@0 {
 				compatible = "jedec,spi-nor";
+				spi-max-frequency = <5000000>;
 				#address-cells = <1>;
 				#size-cells = <1>;
 				reg = <0>;