MTKSWITCH_PIAC
MTKSWITCH_WRITE(sc, MTKSWITCH_PIAC, PIAC_PHY_ACS_ST | PIAC_MDIO_ST |
while ((data = MTKSWITCH_READ(sc, MTKSWITCH_PIAC)) & PIAC_PHY_ACS_ST);
MTKSWITCH_WRITE(sc, MTKSWITCH_PIAC, PIAC_PHY_ACS_ST | PIAC_MDIO_ST |
while (MTKSWITCH_READ(sc, MTKSWITCH_PIAC) & PIAC_PHY_ACS_ST);