diff --git a/arch/arm/dts/zynqmp.dtsi b/arch/arm/dts/zynqmp.dtsi
index 47ffdf1b16..d7e551630d 100644
--- a/arch/arm/dts/zynqmp.dtsi
+++ b/arch/arm/dts/zynqmp.dtsi
@@ -691,7 +691,7 @@
 			interrupt-parent = <&gic>;
 			interrupts = <0 26 4>, <0 27 4>;
 			interrupt-names = "alarm", "sec";
-			calibration = <0x8000>;
+			calibration = <0x7FFF>;
 		};
 
 		sata: ahci@fd0c0000 {