net: mii: check phy advertising register when geting link status

When phy autoneg on, the link speed and duplex should be
determined by phy advertising register and
phy link partner ability register.
Check phy advertising register when geting phy link speed and
duplex if autoneg on.

Signed-off-by: Dongpo Li <lidongpo@hisilicon.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

common/miiphyutil.c

@@ -380,7 +380,7 @@ int miiphy_reset(const char *devname, unsigned char addr)
  */
 int miiphy_speed(const char *devname, unsigned char addr)
 {
-	u16 bmcr, anlpar;
+	u16 bmcr, anlpar, adv;
 
 #if defined(CONFIG_PHY_GIGE)
 	u16 btsr;
@@ -417,7 +417,12 @@ int miiphy_speed(const char *devname, unsigned char addr)
 			printf("PHY AN speed");
 			goto miiphy_read_failed;
 		}
-		return (anlpar & LPA_100) ? _100BASET : _10BASET;
+
+		if (miiphy_read(devname, addr, MII_ADVERTISE, &adv)) {
+			puts("PHY AN adv speed");
+			goto miiphy_read_failed;
+		}
+		return ((anlpar & adv) & LPA_100) ? _100BASET : _10BASET;
 	}
 	/* Get speed from basic control settings. */
 	return (bmcr & BMCR_SPEED100) ? _100BASET : _10BASET;
@@ -433,7 +438,7 @@ miiphy_read_failed:
  */
 int miiphy_duplex(const char *devname, unsigned char addr)
 {
-	u16 bmcr, anlpar;
+	u16 bmcr, anlpar, adv;
 
 #if defined(CONFIG_PHY_GIGE)
 	u16 btsr;
@@ -475,7 +480,12 @@ int miiphy_duplex(const char *devname, unsigned char addr)
 			puts("PHY AN duplex");
 			goto miiphy_read_failed;
 		}
-		return (anlpar & (LPA_10FULL | LPA_100FULL)) ?
+
+		if (miiphy_read(devname, addr, MII_ADVERTISE, &adv)) {
+			puts("PHY AN adv duplex");
+			goto miiphy_read_failed;
+		}
+		return ((anlpar & adv) & (LPA_10FULL | LPA_100FULL)) ?
 		    FULL : HALF;
 	}
 	/* Get speed from basic control settings. */