diff --git a/target/linux/ramips/dts/GB-PC1.dts b/target/linux/ramips/dts/GB-PC1.dts
index df7caa9100..664dfa1efd 100644
--- a/target/linux/ramips/dts/GB-PC1.dts
+++ b/target/linux/ramips/dts/GB-PC1.dts
@@ -102,6 +102,11 @@
 	};
 };
 
+&cpuclock {
+	compatible = "fixed-clock";
+	clock-frequency = <90000000>;
+};
+
 &pcie {
 	status = "okay";
 };