tests: boards: nrf: qdec: Enable test on nRF54L20 FLPR

Add overlay required to run qdec tests
on nrf54l20pdk/nrf54l20/cpuflpr.

Signed-off-by: Sebastian Głąb <[email protected]>

Author: nordic-segl

tests/boards/nrf/qdec/boards/nrf54l20pdk_nrf54l20_common.dtsi

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2025 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)>;
+		};
+	};
+
+	qdec_sleep_pinctrl: qdec_sleep_pinctrl {
+		group1 {
+			psels = <NRF_PSEL(QDEC_A, 1, 8)>,
+				<NRF_PSEL(QDEC_B, 1, 10)>;
+			low-power-enable;
+		};
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&qdec20 {
+	status = "okay";
+	pinctrl-0 = <&qdec_pinctrl>;
+	pinctrl-1 = <&qdec_sleep_pinctrl>;
+	pinctrl-names = "default", "sleep";
+	steps = <127>;
+	led-pre = <500>;
+	zephyr,pm-device-runtime-auto;
+};

tests/boards/nrf/qdec/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay

@@ -3,51 +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)>;
-		};
-	};
-
-	qdec_sleep_pinctrl: qdec_sleep_pinctrl {
-		group1 {
-			psels = <NRF_PSEL(QDEC_A, 1, 8)>,
-				<NRF_PSEL(QDEC_B, 1, 10)>;
-			low-power-enable;
-		};
-	};
-};
-
-&gpio1 {
-	status = "okay";
-};
-
-&qdec20 {
-	status = "okay";
-	pinctrl-0 = <&qdec_pinctrl>;
-	pinctrl-1 = <&qdec_sleep_pinctrl>;
-	pinctrl-names = "default", "sleep";
-	steps = <127>;
-	led-pre = <500>;
-	zephyr,pm-device-runtime-auto;
-};
+#include "nrf54l20pdk_nrf54l20_common.dtsi"

tests/boards/nrf/qdec/boards/nrf54l20pdk_nrf54l20_cpuflpr.overlay

@@ -0,0 +1,6 @@
+/*
+ * Copyright 2025 Nordic Semiconductor ASA
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "nrf54l20pdk_nrf54l20_common.dtsi"

tests/boards/nrf/qdec/testcase.yaml

@@ -2,16 +2,17 @@ common:
   platform_allow:
     - nrf52840dk/nrf52840
     - nrf5340dk/nrf5340/cpuapp
+    - nrf54h20dk/nrf54h20/cpuapp
     - nrf54l15dk/nrf54l15/cpuapp
     - nrf54l15dk/nrf54l15/cpuflpr
     - nrf54l20pdk/nrf54l20/cpuapp
-    - nrf54h20dk/nrf54h20/cpuapp
+    - nrf54l20pdk/nrf54l20/cpuflpr
   integration_platforms:
     - nrf52840dk/nrf52840
     - nrf5340dk/nrf5340/cpuapp
+    - nrf54h20dk/nrf54h20/cpuapp
     - nrf54l15dk/nrf54l15/cpuapp
     - nrf54l15dk/nrf54l15/cpuflpr
-    - nrf54h20dk/nrf54h20/cpuapp
   harness: ztest
   harness_config:
     fixture: gpio_loopback