[U-Boot] [PATCH 1/3] net: phy: marvell: Fix init function for m88e1145

[York Sun]

Commit a058052c changed the generic phy_reset() to clear all bits in
BMCR. This inevitably clears the ANEG bit. m88e1145 requires any
change to ANEG bit to be followed by a software reset. This seems to
be different from other PHYs. Implemente read-modify-write prodecure
for this PHY init.

Signed-off-by: York Sun <york.sun at nxp.com>
---
This issue was observed on MPC8548CDS. The fix has been verified on
the same board.

 drivers/net/phy/marvell.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index ab0c443..4722fd3 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -439,7 +439,10 @@ static int m88e1145_config(struct phy_device *phydev)
 
 	genphy_config_aneg(phydev);
 
-	phy_reset(phydev);
+	/* soft reset */
+	reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
+	reg |= BMCR_RESET;
+	phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, reg);
 
 	return 0;
 }
-- 
2.7.4