diff --git a/tests/boards/nrf/qdec/boards/nrf54l15dk_nrf54l15_cpuapp.overlay b/tests/boards/nrf/qdec/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
index 538106b38b1..63276a93656 100644
--- a/tests/boards/nrf/qdec/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
+++ b/tests/boards/nrf/qdec/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
@@ -3,41 +3,4 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-/ {
-	aliases {
-		qdec0 = &qdec20;
-		qenca = &phase_a;
-		qencb = &phase_b;
-	};
-
-	encoder-emulate {
-		compatible = "gpio-leds";
-		phase_a: phase_a {
-			gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
-		};
-		phase_b: phase_b {
-			gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
-		};
-	};
-};
-
-&pinctrl {
-	qdec_pinctrl: qdec_pinctrl {
-		group1 {
-			psels = <NRF_PSEL(QDEC_A, 1, 8)>,
-				<NRF_PSEL(QDEC_B, 1, 10)>;
-		};
-	};
-};
-
-&gpio1 {
-	status = "okay";
-};
-
-&qdec20 {
-	status = "okay";
-	pinctrl-0 = <&qdec_pinctrl>;
-	pinctrl-names = "default";
-	steps = <127>;
-	led-pre = <500>;
-};
+#include "nrf54l15pdk_nrf54l15_common.dtsi"
diff --git a/tests/boards/nrf/qdec/boards/nrf54l15dk_nrf54l15_cpuflpr.overlay b/tests/boards/nrf/qdec/boards/nrf54l15dk_nrf54l15_cpuflpr.overlay
index 538106b38b1..63276a93656 100644
--- a/tests/boards/nrf/qdec/boards/nrf54l15dk_nrf54l15_cpuflpr.overlay
+++ b/tests/boards/nrf/qdec/boards/nrf54l15dk_nrf54l15_cpuflpr.overlay
@@ -3,41 +3,4 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-/ {
-	aliases {
-		qdec0 = &qdec20;
-		qenca = &phase_a;
-		qencb = &phase_b;
-	};
-
-	encoder-emulate {
-		compatible = "gpio-leds";
-		phase_a: phase_a {
-			gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
-		};
-		phase_b: phase_b {
-			gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
-		};
-	};
-};
-
-&pinctrl {
-	qdec_pinctrl: qdec_pinctrl {
-		group1 {
-			psels = <NRF_PSEL(QDEC_A, 1, 8)>,
-				<NRF_PSEL(QDEC_B, 1, 10)>;
-		};
-	};
-};
-
-&gpio1 {
-	status = "okay";
-};
-
-&qdec20 {
-	status = "okay";
-	pinctrl-0 = <&qdec_pinctrl>;
-	pinctrl-names = "default";
-	steps = <127>;
-	led-pre = <500>;
-};
+#include "nrf54l15pdk_nrf54l15_common.dtsi"
diff --git a/tests/boards/nrf/qdec/boards/nrf54l15pdk_nrf54l15_common.dtsi b/tests/boards/nrf/qdec/boards/nrf54l15pdk_nrf54l15_common.dtsi
new file mode 100644
index 00000000000..538106b38b1
--- /dev/null
+++ b/tests/boards/nrf/qdec/boards/nrf54l15pdk_nrf54l15_common.dtsi
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2024 Nordic Semiconductor ASA
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	aliases {
+		qdec0 = &qdec20;
+		qenca = &phase_a;
+		qencb = &phase_b;
+	};
+
+	encoder-emulate {
+		compatible = "gpio-leds";
+		phase_a: phase_a {
+			gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
+		};
+		phase_b: phase_b {
+			gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&pinctrl {
+	qdec_pinctrl: qdec_pinctrl {
+		group1 {
+			psels = <NRF_PSEL(QDEC_A, 1, 8)>,
+				<NRF_PSEL(QDEC_B, 1, 10)>;
+		};
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&qdec20 {
+	status = "okay";
+	pinctrl-0 = <&qdec_pinctrl>;
+	pinctrl-names = "default";
+	steps = <127>;
+	led-pre = <500>;
+};