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Patch "net: phy: marvell: Limit errata to 88m1101" has been added to the 4.11-stable tree

PATCH [email protected] 1 participant 1 message May 31, 2017

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Network drivers Stable branch Ethernet PHY
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This is a note to let you know that I've just added the patch titled

net: phy: marvell: Limit errata to 88m1101

to the 4.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:

     net-phy-marvell-limit-errata-to-88m1101.patch

and it can be found in the queue-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From foo@baz Wed May 31 09:13:10 JST 2017

From: Andrew Lunn <[email protected]>
Date: Tue, 23 May 2017 17:49:13 +0200
Subject: net: phy: marvell: Limit errata to 88m1101

From: Andrew Lunn <[email protected]>

[ Upstream commit f2899788353c13891412b273fdff5f02d49aa40f ]

The 88m1101 has an errata when configuring autoneg. However, it was being applied to many other Marvell PHYs as well. Limit its scope to just the 88m1101.

Fixes 76884679c644 ("phylib: Add support for Marvell 88e1111S and 88e1145")
Reported-by Daniel Walker <[email protected]>
Signed-off-by Andrew Lunn <[email protected]>
Acked-by Harini Katakam <[email protected]>
Reviewed-by Florian Fainelli <[email protected]>
Signed-off-by David S. Miller <[email protected]>
Signed-off-by Greg Kroah-Hartman <[email protected]>
---
 drivers/net/phy/marvell.c |   66 +++++++++++++++++++++++++---------------------
 1 file changed, 37 insertions(+), 29 deletions(-)
drivers/net/phy/marvell.c +37 -29
@@ -255,34 +255,6 @@ static int marvell_config_aneg(struct ph
 {
 	int err;
 
-	/* The Marvell PHY has an errata which requires
-	 * that certain registers get written in order
-	 * to restart autonegotiation */
-	err = phy_write(phydev, MII_BMCR, BMCR_RESET);
-
-	if (err < 0)
-		return err;
-
-	err = phy_write(phydev, 0x1d, 0x1f);
-	if (err < 0)
-		return err;
-
-	err = phy_write(phydev, 0x1e, 0x200c);
-	if (err < 0)
-		return err;
-
-	err = phy_write(phydev, 0x1d, 0x5);
-	if (err < 0)
-		return err;
-
-	err = phy_write(phydev, 0x1e, 0);
-	if (err < 0)
-		return err;
-
-	err = phy_write(phydev, 0x1e, 0x100);
-	if (err < 0)
-		return err;
-
 	err = marvell_set_polarity(phydev, phydev->mdix_ctrl);
 	if (err < 0)
 		return err;

@@ -316,6 +288,42 @@ static int marvell_config_aneg(struct ph
 	return 0;
 }
 
+static int m88e1101_config_aneg(struct phy_device *phydev)
+{
+	int err;
+
+	/* This Marvell PHY has an errata which requires
+	 * that certain registers get written in order
+	 * to restart autonegotiation
+	 */
+	err = phy_write(phydev, MII_BMCR, BMCR_RESET);
+
+	if (err < 0)
+		return err;
+
+	err = phy_write(phydev, 0x1d, 0x1f);
+	if (err < 0)
+		return err;
+
+	err = phy_write(phydev, 0x1e, 0x200c);
+	if (err < 0)
+		return err;
+
+	err = phy_write(phydev, 0x1d, 0x5);
+	if (err < 0)
+		return err;
+
+	err = phy_write(phydev, 0x1e, 0);
+	if (err < 0)
+		return err;
+
+	err = phy_write(phydev, 0x1e, 0x100);
+	if (err < 0)
+		return err;
+
+	return marvell_config_aneg(phydev);
+}
+
 static int m88e1111_config_aneg(struct phy_device *phydev)
 {
 	int err;

@@ -1892,7 +1900,7 @@ static struct phy_driver marvell_drivers
 		.flags = PHY_HAS_INTERRUPT,
 		.probe = marvell_probe,
 		.config_init = &marvell_config_init,
-		.config_aneg = &marvell_config_aneg,
+		.config_aneg = &m88e1101_config_aneg,
 		.read_status = &genphy_read_status,
 		.ack_interrupt = &marvell_ack_interrupt,
 		.config_intr = &marvell_config_intr,

Patches currently in stable-queue which might be from [email protected] are

queue-4.11/net-phy-marvell-limit-errata-to-88m1101.patch