From: Alison Wang <b18965@freescale.com>
Date: Fri, 19 Feb 2016 07:52:28 +0000 (+0800)
Subject: net: phy: atheros: Fix problem with phy_reset() clearing BMCR
X-Git-Tag: v2016.03-rc3~10^2~1
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=903d384d401bdfc517266787549caf4630a7f305;p=oweals%2Fu-boot.git

net: phy: atheros: Fix problem with phy_reset() clearing BMCR

In commit <a058052c358c> [net: phy: do not read configuration register on
reset], phy_reset() will clear the BMCR register. Bit 12(AUTO_NEGOTIATION)
is cleared too. It causes auto-negotiation timeout error on Atheros's
PHY AR8033.

To fix this problem, genphy_config_aneg() and genphy_restart_aneg()
needs to be called in ar8035_config() to enable and restart
auto-negotiation.

Signed-off-by: Alison Wang <alison.wang@nxp.com>
Acked-by: Stefan Agner <stefan@agner.ch>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---

diff --git a/drivers/net/phy/atheros.c b/drivers/net/phy/atheros.c
index ba57b1a4b9..e57c4120a3 100644
--- a/drivers/net/phy/atheros.c
+++ b/drivers/net/phy/atheros.c
@@ -33,6 +33,9 @@ static int ar8035_config(struct phy_device *phydev)
 
 	phydev->supported = phydev->drv->features;
 
+	genphy_config_aneg(phydev);
+	genphy_restart_aneg(phydev);
+
 	return 0;
 }