diff --git a/boards/nrf54l15dk_nrf54l15_cpuapp.overlay b/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
index 7613ab8..d436c52 100644
--- a/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
+++ b/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
@@ -4,6 +4,17 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/ {
+	host_interface {
+		compatible = "gpio-outputs";
+		status = "okay";
+		timesync: pin_0 {
+			gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
+			label = "Controller to host timesync pin";
+		};
+	};
+};
+
 &uart20 {
 	compatible = "nordic,nrf-uarte";
 	current-speed = <1000000>;