EMAC_CTL_RX_EN
reg_val |= EMAC_CTL_RST | EMAC_CTL_TX_EN | EMAC_CTL_RX_EN;
reg_val &= ~(EMAC_CTL_RST | EMAC_CTL_TX_EN | EMAC_CTL_RX_EN);
reg_val &= ~EMAC_CTL_RX_EN;
reg_val |= EMAC_CTL_RX_EN;
reg_val &= ~(EMAC_CTL_RST | EMAC_CTL_TX_EN | EMAC_CTL_RX_EN);