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net: fec: use mac-managed PHY PM

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Use the new mac_managed_pm flag to work around an issue with KSZ8081 PHY
that becomes unstable when a soft reset is triggered during aneg.

Reported-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Tested-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Heiner Kallweit 2021-04-07 17:52:45 +02:00 • committed by Jakub Kicinski
parent fba863b816
commit 557d5dc83f
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/freescale/fec_main.c
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@ -2048,6 +2048,8 @@ static int fec_enet_mii_probe(struct net_device *ndev)
fep->link = 0; fep->link = 0;
fep->full_duplex = 0; fep->full_duplex = 0;
phy_dev->mac_managed_pm = 1;
phy_attached_info(phy_dev); phy_attached_info(phy_dev);
return 0; return 0;
@ -3864,6 +3866,7 @@ static int __maybe_unused fec_resume(struct device *dev)
netif_device_attach(ndev); netif_device_attach(ndev);
netif_tx_unlock_bh(ndev); netif_tx_unlock_bh(ndev);
napi_enable(&fep->napi); napi_enable(&fep->napi);
phy_init_hw(ndev->phydev);
phy_start(ndev->phydev); phy_start(ndev->phydev);
} }
rtnl_unlock(); rtnl_unlock();