XGMAC_MAC_TX_LF_RF_CONTROL_REG
dsaf_set_dev_field(mac_drv, XGMAC_MAC_TX_LF_RF_CONTROL_REG,
dsaf_write_dev(mac_drv, XGMAC_MAC_TX_LF_RF_CONTROL_REG, val);
regs[40] = dsaf_read_dev(drv, XGMAC_MAC_TX_LF_RF_CONTROL_REG);