+void npcm_dwmac_pcs_init(struct npcm_dwmac *dwmac, struct device *dev,
+			 struct plat_stmmacenet_data *plat_dat)
+{
+	u16 val;
+
+	iowrite16((u16)(SR_MII_CTRL >> 9), dwmac->reg + IND_AC_BA_REG);
+	val = ioread16(dwmac->reg + PCS_SR_MII_CTRL_REG);
+	val |= PCS_RST;
+	iowrite16(val, dwmac->reg + PCS_SR_MII_CTRL_REG);
+
+	while (val & PCS_RST)
+		val = ioread16(dwmac->reg + PCS_SR_MII_CTRL_REG);
+
+	val &= ~(PCS_AN_ENABLE);
+	iowrite16(val, dwmac->reg + PCS_SR_MII_CTRL_REG);
+}

Is this a licensed PCS implementation? Or home grown? If its been
licensed from somebody, it maybe should live in driver/net/pcs, so
others can reuse it when they license the same core.

       Andrew