DEFAULT_TX_CNTRL0
__raw_writel(DEFAULT_TX_CNTRL0, &port->regs->tx_control[0]);
__raw_writel(DEFAULT_TX_CNTRL0 & ~TX_CNTRL0_HALFDUPLEX,
__raw_writel(DEFAULT_TX_CNTRL0 | TX_CNTRL0_HALFDUPLEX,