[nrf fromlist] tests: boards: nrf: hwinfo: Add test for reset cause on nrf54*

Add test that checks reset cause reported by HWINFO.

Check that hwinfo_get_supported_reset_cause() returns
expected value.

Check that hwinfo_get_reset_cause() correctly detects:
- RESET_PIN,
- RESET_SOFTWARE,
- RESET_WATCHDOG.

Check that reset cause can be cleared
with hwinfo_clear_reset_cause().

Upstream PR #: 83126

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

Author: nordic-segl

tests/boards/nrf/hwinfo/reset_cause/CMakeLists.txt

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(reset_reason)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/boards/nrf/hwinfo/reset_cause/boards/nrf54h20dk_nrf54h20_cpuapp.conf

@@ -0,0 +1,2 @@
+# Disable dcache
+CONFIG_DCACHE=n

tests/boards/nrf/hwinfo/reset_cause/boards/nrf54h20dk_nrf54h20_cpuapp.overlay

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2024 Nordic Semiconductor ASA
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	aliases {
+		watchdog0 = &wdt010;
+	};
+};
+
+&wdt010 {
+	status = "okay";
+};

tests/boards/nrf/hwinfo/reset_cause/boards/nrf54h20dk_nrf54h20_cpurad.conf

@@ -0,0 +1,2 @@
+# Disable dcache
+CONFIG_DCACHE=n

tests/boards/nrf/hwinfo/reset_cause/boards/nrf54h20dk_nrf54h20_cpurad.overlay

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2024 Nordic Semiconductor ASA
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	aliases {
+		watchdog0 = &wdt010;
+	};
+};
+
+&wdt010 {
+	status = "okay";
+};

tests/boards/nrf/hwinfo/reset_cause/boards/nrf54l15dk_nrf54l15_cpuapp.overlay

@@ -0,0 +1,9 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&wdt31 {
+	status = "okay";
+};

tests/boards/nrf/hwinfo/reset_cause/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay

@@ -0,0 +1,9 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&wdt31 {
+	status = "okay";
+};

tests/boards/nrf/hwinfo/reset_cause/prj.conf

@@ -0,0 +1,7 @@
+CONFIG_HWINFO=y
+
+CONFIG_WATCHDOG=y
+CONFIG_REBOOT=y
+
+CONFIG_LOG=y
+CONFIG_LOG_MODE_MINIMAL=y