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

   1 From fa3bc9db82e8a0f90986c94f5c69ba8dae265ecf Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Thu, 5 Apr 2018 14:46:11 +0100
   4 Subject: [PATCH] lan78xx: Move enabling of EEE into PHY init code
   5
   6 Enable EEE mode as soon as possible after connecting to the PHY, and
   7 before phy_start. This avoids a second link negotiation, which speeds
   8 up booting and stops the interface failing to become ready.
   9
  10 See: https://github.com/raspberrypi/linux/issues/2437
  11
  12 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  13 ---
  14  drivers/net/usb/lan78xx.c | 32 ++++++++++++++++----------------
  15  1 file changed, 16 insertions(+), 16 deletions(-)
  16
  17 --- a/drivers/net/usb/lan78xx.c
  18 +++ b/drivers/net/usb/lan78xx.c
  19 @@ -2179,6 +2179,22 @@ static int lan78xx_phy_init(struct lan78
  20         mii_adv_to_linkmode_adv_t(fc, mii_adv);
  21         linkmode_or(phydev->advertising, fc, phydev->advertising);
  22
  23 +       if (of_property_read_bool(dev->udev->dev.of_node,
  24 +                                 "microchip,eee-enabled")) {
  25 +               struct ethtool_eee edata;
  26 +               memset(&edata, 0, sizeof(edata));
  27 +               edata.cmd = ETHTOOL_SEEE;
  28 +               edata.advertised = ADVERTISED_1000baseT_Full |
  29 +                                  ADVERTISED_100baseT_Full;
  30 +               edata.eee_enabled = true;
  31 +               edata.tx_lpi_enabled = true;
  32 +               if (of_property_read_u32(dev->udev->dev.of_node,
  33 +                                        "microchip,tx-lpi-timer",
  34 +                                        &edata.tx_lpi_timer))
  35 +                       edata.tx_lpi_timer = 600; /* non-aggressive */
  36 +               (void)lan78xx_set_eee(dev->net, &edata);
  37 +       }
  38 +
  39         if (phydev->mdio.dev.of_node) {
  40                 u32 reg;
  41                 int len;
  42 @@ -2656,22 +2672,6 @@ static int lan78xx_open(struct net_devic
  43
  44         netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
  45
  46 -       if (of_property_read_bool(dev->udev->dev.of_node,
  47 -                                 "microchip,eee-enabled")) {
  48 -               struct ethtool_eee edata;
  49 -               memset(&edata, 0, sizeof(edata));
  50 -               edata.cmd = ETHTOOL_SEEE;
  51 -               edata.advertised = ADVERTISED_1000baseT_Full |
  52 -                                  ADVERTISED_100baseT_Full;
  53 -               edata.eee_enabled = true;
  54 -               edata.tx_lpi_enabled = true;
  55 -               if (of_property_read_u32(dev->udev->dev.of_node,
  56 -                                        "microchip,tx-lpi-timer",
  57 -                                        &edata.tx_lpi_timer))
  58 -                       edata.tx_lpi_timer = 600; /* non-aggressive */
  59 -               (void)lan78xx_set_eee(net, &edata);
  60 -       }
  61 -
  62         /* for Link Check */
  63         if (dev->urb_intr) {
  64                 ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);