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lan78xx: Move enabling of EEE into PHY init code
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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: #2437

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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Phil Elwell authored and popcornmix committed Jul 8, 2024
1 parent 3715bc5 commit bbe9aab
Showing 1 changed file with 19 additions and 16 deletions.
35 changes: 19 additions & 16 deletions drivers/net/usb/lan78xx.c
Original file line number Diff line number Diff line change
Expand Up @@ -2417,6 +2417,25 @@ static int lan78xx_phy_init(struct lan78xx_net *dev)
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_keee edata;
memset(&edata, 0, sizeof(edata));

linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
edata.advertised);
linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
edata.advertised);

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;
Expand Down Expand Up @@ -3118,22 +3137,6 @@ static int lan78xx_open(struct net_device *net)

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);
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