* [PATCH net-next] phy: keep the BCMR_LOOPBACK bit while setup forced mode
@ 2016-03-25 2:47 Weidong Wang
0 siblings, 0 replies; only message in thread
From: Weidong Wang @ 2016-03-25 2:47 UTC (permalink / raw)
To: f.fainelli; +Cc: netdev, linux-kernel
When tested the PHY SGMII Loopback,:
1.set the LOOPBACK bit,
2.set the autoneg to AUTONEG_DISABLE, it calls the
genphy_setup_forced which will clear the bit.
So just keep the LOOPBACK bit while setup forced mode.
Signed-off-by: Weidong Wang <wangweidong1@huawei.com>
---
drivers/net/phy/phy_device.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index e551f3a..8da4b80 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1124,7 +1124,9 @@ static int genphy_config_advert(struct phy_device *phydev)
int genphy_setup_forced(struct phy_device *phydev)
{
int ctl = 0;
+ int val = phy_read(phydev, MII_BMCR);
+ ctl |= val & BMCR_LOOPBACK;
phydev->pause = 0;
phydev->asym_pause = 0;
--
2.7.0
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2016-03-25 2:47 [PATCH net-next] phy: keep the BCMR_LOOPBACK bit while setup forced mode Weidong Wang
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