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stm32/powerctrl: Reenable PLL3 on H7 MCUs when waking from stop mode.

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So that USB can work.
This commit is contained in:
Damien George 2020-01-31 23:23:56 +11:00
parent 2c8c2b935e
commit af88e70414
1 changed files with 7 additions and 0 deletions

7
ports/stm32/powerctrl.c

@ -504,6 +504,13 @@ void powerctrl_enter_stop_mode(void) {
} }
#endif #endif
#if defined(STM32H7)
// Enable PLL3 for USB
RCC->CR |= RCC_CR_PLL3ON;
while (!(RCC->CR & RCC_CR_PLL3RDY)) {
}
#endif
#if defined(STM32L4) #if defined(STM32L4)
// Enable PLLSAI1 for peripherals that use it // Enable PLLSAI1 for peripherals that use it
RCC->CR |= RCC_CR_PLLSAI1ON; RCC->CR |= RCC_CR_PLLSAI1ON;