tests: benchmarks: peripheral_load: Add extra overlay to ipc_radio

Add extra dts overlay to 54h20 ipc_radio which enables all GPIOs
not used by the main test application running on cpuapp.
This indirectly checks whether the perifconf was generated correctly,
meaning there are no conflicts between cpuapp and cpurad.

Signed-off-by: Piotr Krzyzanowski <piotr.krzyzanowski@nordicsemi.no>

Author: nordic-pikr

tests/benchmarks/peripheral_load/nrf54h20dk_unused_gpios.overlay

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/ {
+	zephyr,user {
+		gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>, <&gpio0 1 GPIO_ACTIVE_HIGH>,
+			<&gpio0 2 GPIO_ACTIVE_HIGH>, <&gpio0 3 GPIO_ACTIVE_HIGH>,
+			<&gpio0 5 GPIO_ACTIVE_HIGH>, <&gpio0 6 GPIO_ACTIVE_HIGH>,
+			<&gpio0 7 GPIO_ACTIVE_HIGH>,
+			<&gpio1 0 GPIO_ACTIVE_HIGH>, <&gpio1 3 GPIO_ACTIVE_HIGH>,
+			<&gpio1 7 GPIO_ACTIVE_HIGH>, <&gpio1 9 GPIO_ACTIVE_HIGH>,
+			<&gpio1 10 GPIO_ACTIVE_HIGH>, <&gpio1 11 GPIO_ACTIVE_HIGH>,
+			<&gpio2 0 GPIO_ACTIVE_HIGH>, <&gpio2 2 GPIO_ACTIVE_HIGH>,
+			<&gpio6 1 GPIO_ACTIVE_HIGH>,
+			<&gpio7 0 GPIO_ACTIVE_HIGH>, <&gpio7 1 GPIO_ACTIVE_HIGH>,
+			<&gpio7 2 GPIO_ACTIVE_HIGH>, <&gpio7 3 GPIO_ACTIVE_HIGH>,
+			<&gpio7 4 GPIO_ACTIVE_HIGH>, <&gpio7 5 GPIO_ACTIVE_HIGH>,
+			<&gpio7 6 GPIO_ACTIVE_HIGH>, <&gpio7 7 GPIO_ACTIVE_HIGH>,
+			<&gpio7 8 GPIO_ACTIVE_HIGH>, <&gpio7 9 GPIO_ACTIVE_HIGH>,
+			<&gpio7 10 GPIO_ACTIVE_HIGH>, <&gpio7 11 GPIO_ACTIVE_HIGH>,
+			<&gpio9 6 GPIO_ACTIVE_HIGH>, <&gpio9 7 GPIO_ACTIVE_HIGH>,
+			<&gpio9 8 GPIO_ACTIVE_HIGH>, <&gpio9 9 GPIO_ACTIVE_HIGH>,
+			<&gpio9 10 GPIO_ACTIVE_HIGH>, <&gpio9 11 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&gpio6 {
+	status = "okay";
+};
+
+&gpio7 {
+	status = "okay";
+};
+
+&gpio9 {
+	status = "okay";
+};
+
+&gpiote130 {
+	status = "okay";
+};

tests/benchmarks/peripheral_load/sample.yaml

@@ -44,6 +44,9 @@ tests:
       - SHIELD=pca63566
       - SB_CONFIG_NETCORE_IPC_RADIO=y
       - SB_CONFIG_NETCORE_IPC_RADIO_BT_HCI_IPC=y
+      - ipc_radio_EXTRA_DTC_OVERLAY_FILE=${ZEPHYR_NRF_MODULE_DIR}/tests/benchmarks/peripheral_load/nrf54h20dk_unused_gpios.overlay
+      # adding an extra overlay file to ipc_radio is intended to indirectly check whether peripfconf
+      # is generated correctly (there are no conflicts between cpuapp and cpurad)
     platform_allow: nrf54h20dk/nrf54h20/cpuapp
     integration_platforms:
       - nrf54h20dk/nrf54h20/cpuapp