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pm: esp32c6: Power management support

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Power management support (light/deep sleep) for ESP32C6

Signed-off-by: Raffael Rostagno <raffael.rostagno@espressif.com>
This commit is contained in:
Raffael Rostagno 2024-08-02 12:20:38 -03:00 • committed by Anas Nashif
commit 3ee2a62a55
5 changed files with 95 additions and 9 deletions
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2
soc/espressif/esp32c6/Kconfig
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@ -14,6 +14,8 @@ config SOC_SERIES_ESP32C6
select RISCV_ISA_EXT_ZICSR
select HAS_ESPRESSIF_HAL
select XIP if !MCUBOOT
select HAS_PM
select HAS_POWEROFF
if SOC_SERIES_ESP32C6

44
soc/espressif/esp32c6/power.c Normal file
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@ -0,0 +1,44 @@
/*
* Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/pm/pm.h>
#include <zephyr/irq.h>
#include <esp_sleep.h>
#include <zephyr/logging/log.h>
LOG_MODULE_DECLARE(soc, CONFIG_SOC_LOG_LEVEL);
/* Invoke Low Power/System Off specific Tasks */
void pm_state_set(enum pm_state state, uint8_t substate_id)
{
ARG_UNUSED(substate_id);
switch (state) {
case PM_STATE_STANDBY:
/* Nothing to do. */
break;
default:
LOG_DBG("Unsupported power state %u", state);
break;
}
}
/* Handle SOC specific activity after Low Power Mode Exit */
void pm_state_exit_post_ops(enum pm_state state, uint8_t substate_id)
{
ARG_UNUSED(substate_id);
switch (state) {
case PM_STATE_STANDBY:
irq_unlock(MSTATUS_IEN);
__asm__ volatile("wfi");
esp_light_sleep_start();
break;
default:
LOG_DBG("Unsupported power state %u", state);
break;
}
}

15
soc/espressif/esp32c6/poweroff.c Normal file
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@ -0,0 +1,15 @@
/*
* Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/sys/poweroff.h>
#include <esp_sleep.h>
void z_sys_poweroff(void)
{
/* Forces RTC domain to be always on */
esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
esp_deep_sleep_start();
}