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| author | Timur Tabi <timur@codeaurora.org> | 2016-11-07 10:51:40 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-09 18:45:24 -0500 |
| commit | 3e884493448131179a5b7cae1ddca1028ffaecc8 (patch) | |
| tree | ed635993d7ff460c8e634a89f41ee7fd615607f3 /drivers/net/ethernet/qualcomm/emac/emac-mac.c | |
| parent | cdb26d3387f0cdf7b2a2eea581385173547ef21f (diff) | |
| download | linux-3e884493448131179a5b7cae1ddca1028ffaecc8.tar.gz linux-3e884493448131179a5b7cae1ddca1028ffaecc8.tar.bz2 linux-3e884493448131179a5b7cae1ddca1028ffaecc8.zip | |
net: qcom/emac: configure the external phy to allow pause frames
Pause frames are used to enable flow control. A MAC can send and
receive pause frames in order to throttle traffic. However, the PHY
must be configured to allow those frames to pass through.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qualcomm/emac/emac-mac.c')
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac-mac.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qualcomm/emac/emac-mac.c b/drivers/net/ethernet/qualcomm/emac/emac-mac.c index 6fb3bee904d3..70a55dcc431d 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac-mac.c +++ b/drivers/net/ethernet/qualcomm/emac/emac-mac.c @@ -1003,6 +1003,12 @@ int emac_mac_up(struct emac_adapter *adpt) writel((u32)~DIS_INT, adpt->base + EMAC_INT_STATUS); writel(adpt->irq.mask, adpt->base + EMAC_INT_MASK); + /* Enable pause frames. Without this feature, the EMAC has been shown + * to receive (and drop) frames with FCS errors at gigabit connections. + */ + adpt->phydev->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; + adpt->phydev->advertising |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; + adpt->phydev->irq = PHY_IGNORE_INTERRUPT; phy_start(adpt->phydev); |