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fix h7 running on fullspeed phy has issue with WFI if not disable ULPI clock

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hathach 2023-11-22 22:50:10 +07:00
parent 42e7bd4ce8
commit 01f22a9e25
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1 changed files with 16 additions and 0 deletions
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16
src/portable/synopsys/dwc2/dwc2_stm32.h
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@ -145,6 +145,22 @@ static inline void dwc2_phy_init(dwc2_regs_t* dwc2, uint8_t hs_phy_type) {
if (hs_phy_type == HS_PHY_TYPE_NONE) {
// Enable on-chip FS PHY
dwc2->stm32_gccfg |= STM32_GCCFG_PWRDWN;
// https://community.st.com/t5/stm32cubemx-mcus/why-stm32h743-usb-fs-doesn-t-work-if-freertos-tickless-idle/m-p/349480#M18867
// H7 running on full-speed phy need to disable ULPI clock in sleep mode.
// Otherwise, USB won't work when mcu executing WFI/WFE instruction i.e tick-less RTOS.
// Note: there may be other family that is affected by this, but only H7 is tested so far
#if defined(USB_OTG_FS_PERIPH_BASE) && defined(RCC_AHB1LPENR_USB2OTGFSULPILPEN)
if ( USB_OTG_FS_PERIPH_BASE == (uint32_t) dwc2 ) {
RCC->AHB1LPENR &= ~RCC_AHB1LPENR_USB2OTGFSULPILPEN;
}
#endif
#if defined(USB_OTG_HS_PERIPH_BASE) && defined(RCC_AHB1LPENR_USB1OTGHSULPILPEN)
if ( USB_OTG_HS_PERIPH_BASE == (uint32_t) dwc2 ) {
RCC->AHB1LPENR &= ~RCC_AHB1LPENR_USB1OTGHSULPILPEN;
}
#endif
} else {
#if CFG_TUSB_MCU != OPT_MCU_STM32U5
// Disable FS PHY, TODO on U5A5 (dwc2 4.11a) 16th bit is 'Host CDP behavior enable'