Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-12 06:02:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

net: qcom/emac: configure the external phy to allow pause frames

Browse Source 
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>
This commit is contained in:
Timur Tabi 2016-11-07 10:51:40 -06:00 committed by David S. Miller
parent cdb26d3387
commit 3e88449344
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/qualcomm/emac/emac-mac.c
View File

@ -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);