tg3: Fix link flap at 100Mbps with EEE enabled
Matt Carlson [Wed, 20 Jul 2011 10:20:51 +0000 (10:20 +0000)]
This patch increases the scope of the EEE interoperability workaround
to include more asic revisions.  The workarond value is tuned to
workaround a link flap issue at 100Mbps.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tg3.c
drivers/net/tg3.h

index 5bf7671..2a9ab99 100644 (file)
@@ -3131,15 +3131,16 @@ static int tg3_phy_autoneg_cfg(struct tg3 *tp, u32 advertise, u32 flowctrl)
                switch (GET_ASIC_REV(tp->pci_chip_rev_id)) {
                case ASIC_REV_5717:
                case ASIC_REV_57765:
-                       if (!tg3_phydsp_read(tp, MII_TG3_DSP_CH34TP2, &val))
-                               tg3_phydsp_write(tp, MII_TG3_DSP_CH34TP2, val |
-                                                MII_TG3_DSP_CH34TP2_HIBW01);
-                       /* Fall through */
                case ASIC_REV_5719:
                        val = MII_TG3_DSP_TAP26_ALNOKO |
                              MII_TG3_DSP_TAP26_RMRXSTO |
                              MII_TG3_DSP_TAP26_OPCSINPT;
                        tg3_phydsp_write(tp, MII_TG3_DSP_TAP26, val);
+                       /* Fall through */
+               case ASIC_REV_5720:
+                       if (!tg3_phydsp_read(tp, MII_TG3_DSP_CH34TP2, &val))
+                               tg3_phydsp_write(tp, MII_TG3_DSP_CH34TP2, val |
+                                                MII_TG3_DSP_CH34TP2_HIBW01);
                }
 
                val = 0;
index 6a43fc5..691539b 100644 (file)
 #define  MII_TG3_DSP_TAP26_OPCSINPT    0x0004
 #define MII_TG3_DSP_AADJ1CH0           0x001f
 #define MII_TG3_DSP_CH34TP2            0x4022
-#define MII_TG3_DSP_CH34TP2_HIBW01     0x017b
+#define MII_TG3_DSP_CH34TP2_HIBW01     0x01ff
 #define MII_TG3_DSP_AADJ1CH3           0x601f
 #define  MII_TG3_DSP_AADJ1CH3_ADCCKADJ 0x0002
 #define MII_TG3_DSP_EXP1_INT_STAT      0x0f01