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drivers: clock_control: stm32h7: Add logic to handle SMPS config

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Some STM32 SoC supports an internal SMPS

Signed-off-by: Manojkumar Subramaniam <manoj@electrolance.com>
This commit is contained in:
Manojkumar Subramaniam 2021-10-20 00:26:38 +08:00 committed by Carles Cufí
parent 7a690a56c5
commit 86a6280ed7
1 changed files with 8 additions and 0 deletions
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8
drivers/clock_control/clock_stm32_ll_h7.c
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@ -260,7 +260,11 @@ static uint32_t get_hclk_frequency(void)
static int32_t prepare_regulator_voltage_scale(void)
{
/* Make sure to put the CPU in highest Voltage scale during clock configuration */
#if defined(SMPS) && defined(CONFIG_POWER_SUPPLY_SMPS)
LL_PWR_ConfigSupply(LL_PWR_DIRECT_SMPS_SUPPLY);
#else
LL_PWR_ConfigSupply(LL_PWR_LDO_SUPPLY);
#endif
/* Highest voltage is SCALE0 */
LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE0);
return 0;
@ -276,7 +280,11 @@ static int32_t optimize_regulator_voltage_scale(uint32_t sysclk_freq)
/* LL_PWR_REGULATOR_SCALE3 is lowest power consumption */
/* Must be done in accordance to the Maximum allowed frequency vs VOS*/
/* See RM0433 page 352 for more details */
#if defined(SMPS) && defined(CONFIG_POWER_SUPPLY_SMPS)
LL_PWR_ConfigSupply(LL_PWR_DIRECT_SMPS_SUPPLY);
#else
LL_PWR_ConfigSupply(LL_PWR_LDO_SUPPLY);
#endif
LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE0);
return 0;
}