diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/portable/synopsys/dwc2/dwc2_stm32.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/portable/synopsys/dwc2/dwc2_stm32.h b/src/portable/synopsys/dwc2/dwc2_stm32.h index c11c1eb05..0bbad55f5 100644 --- a/src/portable/synopsys/dwc2/dwc2_stm32.h +++ b/src/portable/synopsys/dwc2/dwc2_stm32.h @@ -222,6 +222,10 @@ static inline void dwc2_phy_init(dwc2_regs_t* dwc2, uint8_t hs_phy_type) { // Enable PLL internal PHY USB_HS_PHYC->USB_HS_PHYC_PLL |= USB_HS_PHYC_PLL_PLLEN; + + // Wait ~2ms until the PLL is ready (there's no RDY bit to query) + uint32_t count = (SystemCoreClock / 1000) * 2; + while (count--) __NOP(); #else #endif |