AXGE_EPPRCR
axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_EPPRCR, 0);
axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_EPPRCR, EPPRCR_IPRL);
val = axge_read_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_EPPRCR);
axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_EPPRCR, val);