1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index bdb4ac70d2fb..887c1cea1b42 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -304,10 +304,13 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
                            PHY_M_EC_MAC_S_MSK);
                 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
 
+                /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
                 if (hw->chip_id == CHIP_ID_YUKON_EC)
+                        /* set downshift counter to 3x and enable downshift */
                         ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
                 else
-                        ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
+                        /* set master & slave downshift counter to 1x */
+                        ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
 
                 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
         }
@@ -324,10 +327,12 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
                         /* enable automatic crossover */
                         ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
 
+                        /* downshift on PHY 88E1112 and 88E1149 is changed */
                         if (sky2->autoneg == AUTONEG_ENABLE
                             && (hw->chip_id == CHIP_ID_YUKON_XL
                                 || hw->chip_id == CHIP_ID_YUKON_EC_U
                                 || hw->chip_id == CHIP_ID_YUKON_EX)) {
+                                /* set downshift counter to 3x and enable downshift */
                                 ctrl &= ~PHY_M_PC_DSC_MSK;
                                 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
                         }