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drivers: clock: stm32 clock control with low power modes

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This will export the stm32_clock_control_init function
to restore the clocks after the low power modes.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2021-02-08 14:18:55 +01:00 • committed by Anas Nashif
commit fc41846935
2 changed files with 19 additions and 1 deletions
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15
drivers/clock_control/clock_stm32_ll_common.c
View file

@ -318,7 +318,20 @@ static inline void stm32_clock_control_mco_init(void)
#endif /* CONFIG_CLOCK_STM32_MCO2_SRC_NOCLOCK */
}
static int stm32_clock_control_init(const struct device *dev)
/**
* @brief Initialize clocks for the stm32
*
* This routine is called to enable and configure the clocks and PLL
* of the soc on the board. It depends on the board definition.
* This function is called on the startup and also to restore the config
* when exiting for low power mode.
*
* @param dev clock device struct
*
* @return 0
*/
int stm32_clock_control_init(const struct device *dev)
{
LL_UTILS_ClkInitTypeDef s_ClkInitStruct;
uint32_t hclk_prescaler;

5
drivers/clock_control/clock_stm32_ll_common.h
View file

@ -30,10 +30,15 @@
#define MCO2_SOURCE LL_RCC_MCO2SOURCE_PLLCLK
#endif
#ifdef CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL
void config_pll_init(LL_UTILS_PLLInitTypeDef *pllinit);
#endif /* CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL */
void config_enable_default_clocks(void);
/* Section for functions not available in every Cube packages */
void LL_RCC_MSI_Disable(void);
/* function exported to the soc power.c */
int stm32_clock_control_init(const struct device *dev);
#endif /* ZEPHYR_DRIVERS_CLOCK_CONTROL_STM32_LL_CLOCK_H_ */