openwrt/target/linux/bcm27xx/patches-5.4/950-0118-lan78xx-Move-enabling-of-EEE-into-PHY-init-code.patch

From fa3bc9db82e8a0f90986c94f5c69ba8dae265ecf Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Thu, 5 Apr 2018 14:46:11 +0100
Subject: [PATCH] lan78xx: Move enabling of EEE into PHY init code

Enable EEE mode as soon as possible after connecting to the PHY, and
before phy_start. This avoids a second link negotiation, which speeds
up booting and stops the interface failing to become ready.

See: https://github.com/raspberrypi/linux/issues/2437

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
 drivers/net/usb/lan78xx.c | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2175,6 +2175,22 @@ static int lan78xx_phy_init(struct lan78
 	mii_adv_to_linkmode_adv_t(fc, mii_adv);
 	linkmode_or(phydev->advertising, fc, phydev->advertising);
 
+	if (of_property_read_bool(dev->udev->dev.of_node,
+				  "microchip,eee-enabled")) {
+		struct ethtool_eee edata;
+		memset(&edata, 0, sizeof(edata));
+		edata.cmd = ETHTOOL_SEEE;
+		edata.advertised = ADVERTISED_1000baseT_Full |
+				   ADVERTISED_100baseT_Full;
+		edata.eee_enabled = true;
+		edata.tx_lpi_enabled = true;
+		if (of_property_read_u32(dev->udev->dev.of_node,
+					 "microchip,tx-lpi-timer",
+					 &edata.tx_lpi_timer))
+			edata.tx_lpi_timer = 600; /* non-aggressive */
+		(void)lan78xx_set_eee(dev->net, &edata);
+	}
+
 	if (phydev->mdio.dev.of_node) {
 		u32 reg;
 		int len;
@@ -2652,22 +2668,6 @@ static int lan78xx_open(struct net_devic
 
 	netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
 
-	if (of_property_read_bool(dev->udev->dev.of_node,
-				  "microchip,eee-enabled")) {
-		struct ethtool_eee edata;
-		memset(&edata, 0, sizeof(edata));
-		edata.cmd = ETHTOOL_SEEE;
-		edata.advertised = ADVERTISED_1000baseT_Full |
-				   ADVERTISED_100baseT_Full;
-		edata.eee_enabled = true;
-		edata.tx_lpi_enabled = true;
-		if (of_property_read_u32(dev->udev->dev.of_node,
-					 "microchip,tx-lpi-timer",
-					 &edata.tx_lpi_timer))
-			edata.tx_lpi_timer = 600; /* non-aggressive */
-		(void)lan78xx_set_eee(net, &edata);
-	}
-
 	/* for Link Check */
 	if (dev->urb_intr) {
 		ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);