diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/portable/synopsys/dwc2/dcd_dwc2.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/portable/synopsys/dwc2/dcd_dwc2.c b/src/portable/synopsys/dwc2/dcd_dwc2.c index 5c5450ac2..ac93632be 100644 --- a/src/portable/synopsys/dwc2/dcd_dwc2.c +++ b/src/portable/synopsys/dwc2/dcd_dwc2.c @@ -447,6 +447,14 @@ void dcd_init(uint8_t rhport) { // (non zero-length packet), send STALL back and discard. dwc2->dcfg |= DCFG_NZLSOHSK; + // flush all TX fifo and wait for it cleared + dwc2->grstctl = GRSTCTL_TXFFLSH | (0x10u << GRSTCTL_TXFNUM_Pos); + while (dwc2->grstctl & GRSTCTL_TXFFLSH_Msk) {} + + // flush RX fifo and wait for it cleared + dwc2->grstctl = GRSTCTL_RXFFLSH; + while (dwc2->grstctl & GRSTCTL_RXFFLSH_Msk) {} + // Clear all interrupts uint32_t int_mask = dwc2->gintsts; dwc2->gintsts |= int_mask; |