EMAC_CTL_RX_EN
writel(reg_val | EMAC_CTL_RESET | EMAC_CTL_TX_EN | EMAC_CTL_RX_EN,
writel(reg_val & ~EMAC_CTL_RX_EN,
writel(reg_val | EMAC_CTL_RX_EN,
reg_val &= ~(EMAC_CTL_TX_EN | EMAC_CTL_RX_EN | EMAC_CTL_RESET);