2 files changed, 45 insertions, 0 deletions

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 2165d5fdb8c0..b983596abcbb 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -127,6 +127,39 @@ static int ks8051_config_init(struct phy_device *phydev)
         return 0;
 }
 
+#define KSZ8873MLL_GLOBAL_CONTROL_4     0x06
+#define KSZ8873MLL_GLOBAL_CONTROL_4_DUPLEX      (1 << 6)
+#define KSZ8873MLL_GLOBAL_CONTROL_4_SPEED       (1 << 4)
+int ksz8873mll_read_status(struct phy_device *phydev)
+{
+        int regval;
+
+        /* dummy read */
+        regval = phy_read(phydev, KSZ8873MLL_GLOBAL_CONTROL_4);
+
+        regval = phy_read(phydev, KSZ8873MLL_GLOBAL_CONTROL_4);
+
+        if (regval & KSZ8873MLL_GLOBAL_CONTROL_4_DUPLEX)
+                phydev->duplex = DUPLEX_HALF;
+        else
+                phydev->duplex = DUPLEX_FULL;
+
+        if (regval & KSZ8873MLL_GLOBAL_CONTROL_4_SPEED)
+                phydev->speed = SPEED_10;
+        else
+                phydev->speed = SPEED_100;
+
+        phydev->link = 1;
+        phydev->pause = phydev->asym_pause = 0;
+
+        return 0;
+}
+
+static int ksz8873mll_config_aneg(struct phy_device *phydev)
+{
+        return 0;
+}
+
 static struct phy_driver ksphy_driver[] = {
 {
         .phy_id         = PHY_ID_KS8737,
@@ -204,6 +237,16 @@ static struct phy_driver ksphy_driver[] = {
         .ack_interrupt  = kszphy_ack_interrupt,
         .config_intr    = ksz9021_config_intr,
         .driver         = { .owner = THIS_MODULE, },
+}, {
+        .phy_id         = PHY_ID_KSZ8873MLL,
+        .phy_id_mask    = 0x00fffff0,
+        .name           = "Micrel KSZ8873MLL Switch",
+        .features       = (SUPPORTED_Pause | SUPPORTED_Asym_Pause),
+        .flags          = PHY_HAS_MAGICANEG,
+        .config_init    = kszphy_config_init,
+        .config_aneg    = ksz8873mll_config_aneg,
+        .read_status    = ksz8873mll_read_status,
+        .driver         = { .owner = THIS_MODULE, },
 } };
 
 static int __init ksphy_init(void)
@@ -232,6 +275,7 @@ static struct mdio_device_id __maybe_unused micrel_tbl[] = {
         { PHY_ID_KSZ8021, 0x00ffffff },
         { PHY_ID_KSZ8041, 0x00fffff0 },
         { PHY_ID_KSZ8051, 0x00fffff0 },
+        { PHY_ID_KSZ8873MLL, 0x00fffff0 },
         { }
 };
 
diff --git a/include/linux/micrel_phy.h b/include/linux/micrel_phy.h
index de201203bc7c..adfe8c058f29 100644
--- a/include/linux/micrel_phy.h
+++ b/include/linux/micrel_phy.h
@@ -15,6 +15,7 @@
 
 #define MICREL_PHY_ID_MASK      0x00fffff0
 
+#define PHY_ID_KSZ8873MLL       0x000e7237
 #define PHY_ID_KSZ9021          0x00221610
 #define PHY_ID_KS8737           0x00221720
 #define PHY_ID_KSZ8021          0x00221555