GPHY_OCP
return RTL_R32(tp, GPHY_OCP) & OCPAR_FLAG;
RTL_W32(tp, GPHY_OCP, OCPAR_FLAG | (reg << 15) | data);
RTL_W32(tp, GPHY_OCP, reg << 15);
(RTL_R32(tp, GPHY_OCP) & 0xffff) : -ETIMEDOUT;