Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932685AbdCXAtN (ORCPT ); Thu, 23 Mar 2017 20:49:13 -0400 Received: from mga02.intel.com ([134.134.136.20]:43749 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756896AbdCXAtD (ORCPT ); Thu, 23 Mar 2017 20:49:03 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.36,212,1486454400"; d="scan'208";a="78809995" From: "Brown, Aaron F" To: Bernd Faust , "Kirsher, Jeffrey T" , "Lubetkin, YanirX" , "intel-wired-lan@lists.osuosl.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] e1000e: fix timing for 82579 Gigabit Ethernet controller Thread-Topic: [PATCH] e1000e: fix timing for 82579 Gigabit Ethernet controller Thread-Index: AQHSiIR+MQHYdfmIKki7hzSYMDk5M6GjXgXA Date: Fri, 24 Mar 2017 00:43:12 +0000 Message-ID: <309B89C4C689E141A5FF6A0C5FB2118B8C5DC96A@ORSMSX101.amr.corp.intel.com> References: <1487270527-4549-1-git-send-email-berndfaust@gmail.com> In-Reply-To: <1487270527-4549-1-git-send-email-berndfaust@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.22.254.139] Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.home.local id v2O0nWIk011951 Content-Length: 1114 Lines: 24 > From: netdev-owner@vger.kernel.org [mailto:netdev- > owner@vger.kernel.org] On Behalf Of Bernd Faust > Sent: Thursday, February 16, 2017 10:42 AM > To: Kirsher, Jeffrey T ; Lubetkin, YanirX > ; intel-wired-lan@lists.osuosl.org; > netdev@vger.kernel.org; linux-kernel@vger.kernel.org > Cc: Bernd Faust > Subject: [PATCH] e1000e: fix timing for 82579 Gigabit Ethernet controller > > After an upgrade to Linux kernel v4.x the hardware timestamps of the > 82579 Gigabit Ethernet Controller are different than expected. > The values that are being read are almost four times as big as before > the kernel upgrade. > > The difference is that after the upgrade the driver sets the clock > frequency to 25MHz, where before the upgrade it was set to 96MHz. Intel > confirmed that the correct frequency for this network adapter is 96MHz. > > Signed-off-by: Bernd Faust > --- > drivers/net/ethernet/intel/e1000e/netdev.c | 6 ++++++ > 1 file changed, 6 insertions(+) Tested-by: Aaron Brown