DWXE_RX_CTL0
dwxe_write(sc, DWXE_RX_CTL0, dwxe_read(sc, DWXE_RX_CTL0) |
dwxe_write(sc, DWXE_RX_CTL0, dwxe_read(sc,
DWXE_RX_CTL0) & ~DWXE_RX_CTL0_RX_RECEIVER_EN);