VR_MIICMD
VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_READ_ENB);
if ((CSR_READ_1(sc, VR_MIICMD) & VR_MIICMD_READ_ENB) == 0)
VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_WRITE_ENB);
if ((CSR_READ_1(sc, VR_MIICMD) & VR_MIICMD_WRITE_ENB) == 0)
VR_CLRBIT(sc, VR_MIICMD, VR_MIICMD_AUTOPOLL);