EHCI_QH_SET_EPS
qh_endp |= EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH);
qh_endp |= EHCI_QH_SET_EPS(EHCI_QH_SPEED_FULL);
qh_endp |= EHCI_QH_SET_EPS(EHCI_QH_SPEED_LOW);
htohc32(sc, EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH));
htohc32(sc, EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH) | EHCI_QH_HRECL);