drivers/clock_control: stm32u5: Fix VCO setting

When existing stop mode 1&2, VCO is set to range 4
and should be set back to range 1 to allow full speed
operations.
Rather than setting VCO at startup, set it inside clock
setting procedure so that it could done
in clock reset procedure when existing stop modes.

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2021-09-13 16:39:49 +02:00 committed by Christopher Friedt
commit 1ec41ce922
2 changed files with 4 additions and 2 deletions

View file

@ -324,6 +324,10 @@ void config_src_sysclk_pll(LL_UTILS_ClkInitTypeDef s_ClkInitStruct)
STM32_PLL_N_MULTIPLIER,
STM32_PLL_R_DIVISOR);
LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE1);
while (LL_PWR_IsActiveFlag_VOS() == 0) {
}
if (CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC >= 55) {
/*
* Set EPOD prescaler based on PLL1 input freq (MSI/PLLM)

View file

@ -59,8 +59,6 @@ static int stm32u5_init(const struct device *arg)
/* Disable USB Type-C dead battery pull-down behavior */
LL_PWR_DisableUCPDDeadBattery();
LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE1);
return 0;
}