diff options
| -rw-r--r-- | ports/stm32/powerctrl.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/ports/stm32/powerctrl.c b/ports/stm32/powerctrl.c index 9619e0ea4..0b26e2aea 100644 --- a/ports/stm32/powerctrl.c +++ b/ports/stm32/powerctrl.c @@ -504,6 +504,13 @@ void powerctrl_enter_stop_mode(void) { } #endif + #if defined(STM32H7) + // Enable PLL3 for USB + RCC->CR |= RCC_CR_PLL3ON; + while (!(RCC->CR & RCC_CR_PLL3RDY)) { + } + #endif + #if defined(STM32L4) // Enable PLLSAI1 for peripherals that use it RCC->CR |= RCC_CR_PLLSAI1ON; |