From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752165AbdFEQVj (ORCPT ); Mon, 5 Jun 2017 12:21:39 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:58214 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752146AbdFEQVh (ORCPT ); Mon, 5 Jun 2017 12:21:37 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Daniel Walker , Andrew Lunn , Harini Katakam , Florian Fainelli , "David S. Miller" Subject: [PATCH 4.4 25/53] net: phy: marvell: Limit errata to 88m1101 Date: Mon, 5 Jun 2017 18:17:23 +0200 Message-Id: <20170605153038.783180144@linuxfoundation.org> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20170605153037.105331684@linuxfoundation.org> References: <20170605153037.105331684@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andrew Lunn commit f2899788353c13891412b273fdff5f02d49aa40f upstream. 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 Signed-off-by: Andrew Lunn Acked-by: Harini Katakam Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/phy/marvell.c | 66 +++++++++++++++++++++++++--------------------- 1 file changed, 37 insertions(+), 29 deletions(-) --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -203,34 +203,6 @@ 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); if (err < 0) return err; @@ -264,6 +236,42 @@ 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); +} + #ifdef CONFIG_OF_MDIO /* * Set and/or override some configuration registers based on the @@ -993,7 +1001,7 @@ static struct phy_driver marvell_drivers .name = "Marvell 88E1101", .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, - .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,