From: Weidong Wang <wangweidong1@huawei.com>
To: <f.fainelli@gmail.com>
Cc: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH net-next] phy: keep the BCMR_LOOPBACK bit while setup forced mode
Date: Fri, 25 Mar 2016 10:47:48 +0800 [thread overview]
Message-ID: <56F4A6D4.2080908@huawei.com> (raw)
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
reply other threads:[~2016-03-25 2:48 UTC|newest]
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