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drivers: clock_control: stm32h7: wait for VOS change

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After changing the voltage scale, wait for it to be applied before
returning.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2022-06-09 21:54:07 +02:00 • committed by Carles Cufí
commit 6209f4cb6e
1 changed files with 4 additions and 0 deletions
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4
drivers/clock_control/clock_stm32_ll_h7.c
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@ -253,6 +253,8 @@ static int32_t prepare_regulator_voltage_scale(void)
/* Make sure to put the CPU in highest Voltage scale during clock configuration */ /* Make sure to put the CPU in highest Voltage scale during clock configuration */
/* Highest voltage is SCALE0 */ /* Highest voltage is SCALE0 */
LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE0); LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE0);
while (LL_PWR_IsActiveFlag_VOS() == 0) {
}
return 0; return 0;
} }
@ -286,6 +288,8 @@ static int32_t optimize_regulator_voltage_scale(uint32_t sysclk_freq)
LL_PWR_ConfigSupply(LL_PWR_LDO_SUPPLY); LL_PWR_ConfigSupply(LL_PWR_LDO_SUPPLY);
#endif #endif
LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE0); LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE0);
while (LL_PWR_IsActiveFlag_VOS() == 0) {
}
return 0; return 0;
} }