diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 659fb99..6972fe5 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -1474,6 +1474,34 @@
 	tg3_writephy(tp, MII_TG3_DSP_RW_PORT, val);
 }
 
+static void tg3_phy_toggle_apd(struct tg3 *tp, bool enable)
+{
+	u32 reg;
+
+	if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS))
+		return;
+
+	reg = MII_TG3_MISC_SHDW_WREN |
+	      MII_TG3_MISC_SHDW_SCR5_SEL |
+	      MII_TG3_MISC_SHDW_SCR5_LPED |
+	      MII_TG3_MISC_SHDW_SCR5_DLPTLM |
+	      MII_TG3_MISC_SHDW_SCR5_SDTL |
+	      MII_TG3_MISC_SHDW_SCR5_C125OE;
+	if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5784 || !enable)
+		reg |= MII_TG3_MISC_SHDW_SCR5_DLLAPD;
+
+	tg3_writephy(tp, MII_TG3_MISC_SHDW, reg);
+
+
+	reg = MII_TG3_MISC_SHDW_WREN |
+	      MII_TG3_MISC_SHDW_APD_SEL |
+	      MII_TG3_MISC_SHDW_APD_WKTM_84MS;
+	if (enable)
+		reg |= MII_TG3_MISC_SHDW_APD_ENABLE;
+
+	tg3_writephy(tp, MII_TG3_MISC_SHDW, reg);
+}
+
 static void tg3_phy_toggle_automdix(struct tg3 *tp, int enable)
 {
 	u32 phy;
@@ -1816,16 +1844,15 @@
 			udelay(40);
 			tw32_f(TG3_CPMU_LSPD_1000MB_CLK, val);
 		}
-
-		/* Disable GPHY autopowerdown. */
-		tg3_writephy(tp, MII_TG3_MISC_SHDW,
-			     MII_TG3_MISC_SHDW_WREN |
-			     MII_TG3_MISC_SHDW_APD_SEL |
-			     MII_TG3_MISC_SHDW_APD_WKTM_84MS);
 	}
 
 	tg3_phy_apply_otp(tp);
 
+	if (tp->tg3_flags3 & TG3_FLG3_PHY_ENABLE_APD)
+		tg3_phy_toggle_apd(tp, true);
+	else
+		tg3_phy_toggle_apd(tp, false);
+
 out:
 	if (tp->tg3_flags2 & TG3_FLG2_PHY_ADC_BUG) {
 		tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x0c00);
@@ -10264,6 +10291,10 @@
 	if (err)
 		return TG3_LOOPBACK_FAILED;
 
+	/* Turn off gphy autopowerdown. */
+	if (tp->tg3_flags3 & TG3_FLG3_PHY_ENABLE_APD)
+		tg3_phy_toggle_apd(tp, false);
+
 	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
 	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761 ||
 	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785) {
@@ -10308,6 +10339,10 @@
 			err |= TG3_PHY_LOOPBACK_FAILED;
 	}
 
+	/* Re-enable gphy autopowerdown. */
+	if (tp->tg3_flags3 & TG3_FLG3_PHY_ENABLE_APD)
+		tg3_phy_toggle_apd(tp, true);
+
 	return err;
 }
 
@@ -11596,6 +11631,11 @@
 		if (cfg2 & (1 << 18))
 			tp->tg3_flags2 |= TG3_FLG2_SERDES_PREEMPHASIS;
 
+		if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
+		    GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX &&
+		    (cfg2 & NIC_SRAM_DATA_CFG_2_APD_EN))
+			tp->tg3_flags3 |= TG3_FLG3_PHY_ENABLE_APD;
+
 		if (tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) {
 			u32 cfg3;