Commit 3b60bb91 authored by Sean Kyer's avatar Sean Kyer Committed by Henrik Brix Andersen
Browse files

native: cpu_freq: Add CPU freq support to native_sim 



Define P-states for native_sim and add mock cpu_freq
driver.

Signed-off-by: default avatarSean Kyer <Sean.Kyer@analog.com>
parent e4fb01c6

boards/native/native_sim/native_sim.dts

+18 −0
Original line number Diff line number Diff line
@@ -236,4 +236,22 @@ 
		compatible = "zephyr,bt-hci-userchan";

		status = "okay";

	};



	performance-states {

		pstate_0: pstate_0 {

			compatible = "zephyr,native-sim-pstate";

			load-threshold = <50>;

			pstate-id = <0>;

		};

		pstate_1: pstate_1 {

			compatible = "zephyr,native-sim-pstate";

			load-threshold = <20>;

			pstate-id = <1>;

		};

		pstate_2: pstate_2 {

			compatible = "zephyr,native-sim-pstate";

			load-threshold = <0>;

			pstate-id = <2>;

		};

	};

};

dts/bindings/p_state/zephyr,native-sim-pstate.yaml

0 → 100644
+16 −0
Original line number Diff line number Diff line 
# Copyright (c) 2025 Analog Devices, Inc.

#

# SPDX-License-Identifier: Apache-2.0



description: Native Sim mock implementation of custom properties for performance state (pstate)



compatible: "zephyr,native-sim-pstate"



include: "zephyr,pstate.yaml"



properties:

  pstate-id:

    type: int

    required: true

    description: |

      Identifier of performance state.

soc/native/inf_clock/CMakeLists.txt

+2 −0
Original line number Diff line number Diff line
@@ -17,3 +17,5 @@ zephyr_library_include_directories( 
  )



set(SOC_LINKER_SCRIPT ${ZEPHYR_BASE}/include/zephyr/arch/posix/linker.ld CACHE INTERNAL "")



zephyr_library_sources_ifdef(CONFIG_CPU_FREQ cpu_freq.c)

soc/native/inf_clock/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ 
config SOC_POSIX

	select ARCH_POSIX

	select CPU_HAS_FPU

	select HAS_CPU_FREQ



if SOC_POSIX

soc/native/inf_clock/cpu_freq.c

0 → 100644
+54 −0
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/*

 * Copyright (c) 2025 Analog Devices, Inc.

 *

 * SPDX-License-Identifier: Apache-2.0

 */



#include <zephyr/kernel.h>

#include <zephyr/devicetree.h>

#include <zephyr/cpu_freq/cpu_freq.h>

#include <zephyr/cpu_freq/pstate.h>

#include <zephyr/logging/log.h>



LOG_MODULE_REGISTER(native_sim_cpu_freq, CONFIG_CPU_FREQ_LOG_LEVEL);



struct native_sim_config {

	int state_id;

};



int cpu_freq_pstate_set(const struct pstate *state)

{

	if (state == NULL) {

		LOG_ERR("pstate is NULL");

		return -EINVAL;

	}



	int state_id = ((const struct native_sim_config *)state->config)->state_id;



	LOG_DBG("Setting performance state: %d", state_id);



	switch (state_id) {

	case 0:

		LOG_DBG("Setting P-state 0: Nominal Mode");

		break;

	case 1:

		LOG_DBG("Setting P-state 1: Low Power Mode");

		break;

	case 2:

		LOG_DBG("Setting P-state 2: Ultra-low Power Mode");

		break;

	default:

		LOG_ERR("Unsupported P-state: %d", state_id);

		return -1;

	}



	return 0;

}



#define DEFINE_NATIVE_SIM_CONFIG(node_id)                                                          \

	static const struct native_sim_config _CONCAT(native_sim_config_, node_id) = {             \

		.state_id = DT_PROP(node_id, pstate_id),                                           \

	};                                                                                         \

	PSTATE_DT_DEFINE(node_id, &_CONCAT(native_sim_config_, node_id))



DT_FOREACH_CHILD_STATUS_OKAY(DT_PATH(performance_states), DEFINE_NATIVE_SIM_CONFIG)

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