From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F26CEC169C4 for ; Tue, 29 Jan 2019 11:43:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C354020857 for ; Tue, 29 Jan 2019 11:43:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548762195; bh=Iww4BYsRB2NAzdd4B0KXVbi0JLKuAhzlYQS4eF5RfDI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=bnaHINMdfvIXg/yxxZb9/ookn/AOJn/L9qlUolkLbCwT9on5eJ3jqCztQUiAtCngV jDqcgPCCO5JU5HghiMuJp/Qsfxnj5JPoRmtSLLqFZTyjQm0gENFWpaf2SgV6uOHxho S+u7WDCIzgf/ZQKt3UtWVCMH1cX4eb8j4fw6SFaw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730266AbfA2LnO (ORCPT ); Tue, 29 Jan 2019 06:43:14 -0500 Received: from mail.kernel.org ([198.145.29.99]:33036 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729746AbfA2LnM (ORCPT ); Tue, 29 Jan 2019 06:43:12 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 32A4320857; Tue, 29 Jan 2019 11:43:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548762191; bh=Iww4BYsRB2NAzdd4B0KXVbi0JLKuAhzlYQS4eF5RfDI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D9mf2LtdMpnY0Uf/bUrLKgZCFKjW1fmCvR7fNuadokATop+T3oyczQSAPnMeW78VX pLtZhheBQSY/ROwcQ6R0hFQnBxZ8cYtUsdlvl/3JzEIXHDLDsLCh/FwWF9enaoq02/ hch7Uv9ofTJseR1FRIUp4GgIsOv5zsDIbgin7+q0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andrew Lunn , "David S. Miller" Subject: [PATCH 4.19 004/103] net: phy: marvell: Errata for mv88e6390 internal PHYs Date: Tue, 29 Jan 2019 12:34:41 +0100 Message-Id: <20190129113159.808287257@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190129113159.567154026@linuxfoundation.org> References: <20190129113159.567154026@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andrew Lunn [ Upstream commit 8cbcdc1a51999ca81db2956608b917aacd28d837 ] The VOD can be out of spec, unless some magic value is poked into an undocumented register in an undocumented page. Fixes: e4cf8a38fc0d ("net: phy: Marvell: Add mv88e6390 internal PHY") Signed-off-by: Andrew Lunn Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/phy/marvell.c | 35 ++++++++++++++++++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -1063,6 +1063,39 @@ static int m88e1145_config_init(struct p return 0; } +/* The VOD can be out of specification on link up. Poke an + * undocumented register, in an undocumented page, with a magic value + * to fix this. + */ +static int m88e6390_errata(struct phy_device *phydev) +{ + int err; + + err = phy_write(phydev, MII_BMCR, + BMCR_ANENABLE | BMCR_SPEED1000 | BMCR_FULLDPLX); + if (err) + return err; + + usleep_range(300, 400); + + err = phy_write_paged(phydev, 0xf8, 0x08, 0x36); + if (err) + return err; + + return genphy_soft_reset(phydev); +} + +static int m88e6390_config_aneg(struct phy_device *phydev) +{ + int err; + + err = m88e6390_errata(phydev); + if (err) + return err; + + return m88e1510_config_aneg(phydev); +} + /** * fiber_lpa_to_ethtool_lpa_t * @lpa: value of the MII_LPA register for fiber link @@ -2313,7 +2346,7 @@ static struct phy_driver marvell_drivers .flags = PHY_HAS_INTERRUPT, .probe = m88e6390_probe, .config_init = &marvell_config_init, - .config_aneg = &m88e1510_config_aneg, + .config_aneg = &m88e6390_config_aneg, .read_status = &marvell_read_status, .ack_interrupt = &marvell_ack_interrupt, .config_intr = &marvell_config_intr,