+int emac_mii_reset_gpcs(struct mii_phy *phy)
+{
+ int val;
+ int limit = 10000;
+
+ val = gpcs_phy_read(phy, MII_BMCR);
+ val &= ~(BMCR_ISOLATE | BMCR_ANENABLE);
+ val |= BMCR_RESET;
+ gpcs_phy_write(phy, MII_BMCR, val);
+
+ udelay(300);
+
+ while (limit--) {
+ val = gpcs_phy_read(phy, MII_BMCR);
+ if (val >= 0 && (val & BMCR_RESET) == 0)
+ break;
+ udelay(10);
+ }
+ if ((val & BMCR_ISOLATE) && limit > 0)
+ gpcs_phy_write(phy, MII_BMCR, val & ~BMCR_ISOLATE);
+
+ if (limit > 0 && phy->mode == PHY_MODE_SGMII) {
+ /* Configure GPCS interface to recommended setting for SGMII */
+ gpcs_phy_write(phy, 0x04, 0x8120); /* AsymPause, FDX */
+ gpcs_phy_write(phy, 0x07, 0x2801); /* msg_pg, toggle */
+ gpcs_phy_write(phy, 0x00, 0x0140); /* 1Gbps, FDX */
+ }
+
+ return limit <= 0;
+}
+