PC_MgmtData
data |= !!(CSR_READ_1(l, STGE_PhyCtrl) & PC_MgmtData);
v = l->phyctrl_saved | PC_MgmtDir | PC_MgmtData;
v |= PC_MgmtData;
v &= ~PC_MgmtData;
PC_MgmtData, /* MII_BIT_MDO */
PC_MgmtData, /* MII_BIT_MDI */
PC_MgmtData, /* MII_BIT_MDO */
PC_MgmtData, /* MII_BIT_MDI */