39 lines
1.3 KiB
Diff
39 lines
1.3 KiB
Diff
From cb87015e005f429bff6fc084a61281235ca83d51 Mon Sep 17 00:00:00 2001
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From: Yangbo Lu <yangbo.lu@nxp.com>
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Date: Fri, 6 Dec 2019 12:41:48 +0800
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Subject: [PATCH] LF-376 enetc: disable EEE autoneg by default
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The EEE support has not been enabled on ENETC, but it may connect
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to a PHY which supports EEE and advertises EEE by default, while
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its link partner also advertises EEE. If this happens, the PHY enters
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low power mode when the traffic rate is low and causes packet loss.
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This patch disables EEE advertisement by default for any PHY that
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ENETC connects to, to prevent the above unwanted outcome.
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Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
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---
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drivers/net/ethernet/freescale/enetc/enetc.c | 5 +++++
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1 file changed, 5 insertions(+)
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--- a/drivers/net/ethernet/freescale/enetc/enetc.c
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+++ b/drivers/net/ethernet/freescale/enetc/enetc.c
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@@ -1366,6 +1366,7 @@ static int enetc_phy_connect(struct net_
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{
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struct enetc_ndev_priv *priv = netdev_priv(ndev);
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struct phy_device *phydev;
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+ struct ethtool_eee edata;
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if (!priv->phy_node)
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return 0; /* phy-less mode */
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@@ -1379,6 +1380,10 @@ static int enetc_phy_connect(struct net_
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phy_attached_info(phydev);
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+ /* disable EEE autoneg, until ENETC driver supports it */
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+ memset(&edata, 0, sizeof(struct ethtool_eee));
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+ phy_ethtool_set_eee(phydev, &edata);
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+
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return 0;
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}
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