target/linux/brcm2708/patches-4.14/950-0251-lan78xx-Read-initial-EEE-status-from-DT.patch

   1 From 519f76313689c7e2f03da2e7c91e3c75e68c9034 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Fri, 9 Mar 2018 12:01:00 +0000
   4 Subject: [PATCH 251/454] lan78xx: Read initial EEE status from DT
   5
   6 Add two new DT properties:
   7 * microchip,eee-enabled  - a boolean to enable EEE
   8 * microchip,tx-lpi-timer - time in microseconds to wait before entering
   9                            low power state
  10
  11 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  12 ---
  13  drivers/net/usb/lan78xx.c | 16 ++++++++++++++++
  14  1 file changed, 16 insertions(+)
  15
  16 --- a/drivers/net/usb/lan78xx.c
  17 +++ b/drivers/net/usb/lan78xx.c
  18 @@ -2515,6 +2515,22 @@ static int lan78xx_open(struct net_devic
  19
  20         netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
  21
  22 +       if (of_property_read_bool(dev->udev->dev.of_node,
  23 +                                 "microchip,eee-enabled")) {
  24 +               struct ethtool_eee edata;
  25 +               memset(&edata, 0, sizeof(edata));
  26 +               edata.cmd = ETHTOOL_SEEE;
  27 +               edata.advertised = ADVERTISED_1000baseT_Full |
  28 +                                  ADVERTISED_100baseT_Full;
  29 +               edata.eee_enabled = true;
  30 +               edata.tx_lpi_enabled = true;
  31 +               if (of_property_read_u32(dev->udev->dev.of_node,
  32 +                                        "microchip,tx-lpi-timer",
  33 +                                        &edata.tx_lpi_timer))
  34 +                       edata.tx_lpi_timer = 600; /* non-aggressive */
  35 +               (void)lan78xx_set_eee(net, &edata);
  36 +       }
  37 +
  38         /* for Link Check */
  39         if (dev->urb_intr) {
  40                 ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);