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soc: arm: stm32wl: wakeup from stop clock selection based on sysclk #38795

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Merged
merged 1 commit into from
Sep 29, 2021
Merged

soc: arm: stm32wl: wakeup from stop clock selection based on sysclk #38795

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10 changes: 9 additions & 1 deletion soc/arm/st_stm32/stm32wl/power.c
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Original file line number Diff line number Diff line change
Expand Up @@ -15,16 +15,24 @@
#include <stm32wlxx_ll_rcc.h>
#include <stm32wlxx_ll_system.h>
#include <clock_control/clock_stm32_ll_common.h>
#include <drivers/clock_control/stm32_clock_control.h>

#include <logging/log.h>
LOG_MODULE_DECLARE(soc, CONFIG_SOC_LOG_LEVEL);

/* select MSI as wake-up system clock if configured, HSI otherwise */
#if STM32_SYSCLK_SRC_MSI
#define RCC_STOP_WAKEUPCLOCK_SELECTED LL_RCC_STOP_WAKEUPCLOCK_MSI
#else
#define RCC_STOP_WAKEUPCLOCK_SELECTED LL_RCC_STOP_WAKEUPCLOCK_HSI
#endif

/* Invoke Low Power/System Off specific Tasks */
__weak void pm_power_state_set(struct pm_state_info info)
{
switch (info.state) {
case PM_STATE_SUSPEND_TO_IDLE:
LL_RCC_SetClkAfterWakeFromStop(LL_RCC_STOP_WAKEUPCLOCK_HSI);
LL_RCC_SetClkAfterWakeFromStop(RCC_STOP_WAKEUPCLOCK_SELECTED);
LL_PWR_ClearFlag_WU();
switch (info.substate_id) {
case 1:
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