tests: cpu_freq: Add SoC and on_demand tests

# Copyright (c) 2025 Analog Devices, Inc.

#

# SPDX-License-Identifier: Apache-2.0

cmake_minimum_required(VERSION 3.20.0)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})

project(cpu_freq_soc_test)

target_sources(app PRIVATE src/main.c)

# Copyright (c) 2025 Analog Devices, Inc.

#

# SPDX-License-Identifier: Apache-2.0

CONFIG_LOG=y

CONFIG_ZTEST=y

CONFIG_CPU_FREQ=y

CONFIG_CPU_FREQ_LOG_LEVEL_DBG=y

CONFIG_CPU_FREQ_POLICY_ON_DEMAND=y

# Long interval so test can run without automatic frequency changes

CONFIG_CPU_FREQ_INTERVAL_MS=1000000

/*

 * Copyright (c) 2025 Analog Devices, Inc.

 *

 * SPDX-License-Identifier: Apache-2.0

 */

#include <stdio.h>

#include <zephyr/kernel.h>

#include <zephyr/ztest.h>

#include <zephyr/logging/log.h>

#include <zephyr/cpu_freq/cpu_freq.h>

LOG_MODULE_REGISTER(cpu_freq_soc_test, LOG_LEVEL_INF);

const struct pstate *soc_pstates_dt[] = {

	DT_FOREACH_CHILD_STATUS_OKAY_SEP(DT_PATH(performance_states), PSTATE_DT_GET, (,))};

/*

 * Test SoC integration of CPU Freq

 */

ZTEST(cpu_freq_soc, test_soc_pstates)

{

	int ret;

	zassert_true(ARRAY_SIZE(soc_pstates_dt) > 0, "No p-states defined in devicetree");

	LOG_INF("%d p-states defined for %s", ARRAY_SIZE(soc_pstates_dt), CONFIG_BOARD_TARGET);

	zassert_equal(cpu_freq_pstate_set(NULL), -EINVAL, "Expected -EINVAL for NULL pstate");

	for (int i = 0; i < ARRAY_SIZE(soc_pstates_dt); i++) {

		const struct pstate *state = soc_pstates_dt[i];

		/* Set performance state using pstate driver */

		ret = cpu_freq_pstate_set(state);

		zassert_equal(ret, 0, "Failed to set p-state %d", i);

	}

}

ZTEST_SUITE(cpu_freq_soc, NULL, NULL, NULL, NULL, NULL);

tests:

  subsys.cpu_freq.soc:

    platform_allow:

      - native_sim

      - native_sim/native/64

    tags: cpu_freq

    integration_platforms:

      - native_sim

      - native_sim/native/64

# Copyright (c) 2025 Analog Devices, Inc.

#

# SPDX-License-Identifier: Apache-2.0

cmake_minimum_required(VERSION 3.20.0)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})

project(cpu_freq_on_demand_test)

target_sources(app PRIVATE src/main.c)