diff --git a/arch/arm/dts/socfpga_cyclone5_de1_soc.dts b/arch/arm/dts/socfpga_cyclone5_de1_soc.dts
index ff1e61e0cbe..b71496bfb52 100644
--- a/arch/arm/dts/socfpga_cyclone5_de1_soc.dts
+++ b/arch/arm/dts/socfpga_cyclone5_de1_soc.dts
@@ -75,6 +75,7 @@
 };
 
 &uart0 {
+	clock-frequency = <100000000>;
 	u-boot,dm-pre-reloc;
 };