From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751940AbbHQV2g (ORCPT ); Mon, 17 Aug 2015 17:28:36 -0400 Received: from shards.monkeyblade.net ([149.20.54.216]:36421 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751133AbbHQV2f (ORCPT ); Mon, 17 Aug 2015 17:28:35 -0400 Date: Mon, 17 Aug 2015 14:28:34 -0700 (PDT) Message-Id: <20150817.142834.960620594778281556.davem@davemloft.net> To: plyatov@gmail.com Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, f.fainelli@gmail.com, joe@perches.com, luwei.zhou@freescale.com, richardcochran@gmail.com, u.kleine-koenig@pengutronix.de, Fabio.Estevam@freescale.com, LW@KARO-electronics.de, Frank.Li@freescale.com, mhei@heimpold.de Subject: Re: [PATCH v3] net: phy: workaround for buggy cable detection by LAN8700 after cable plugging From: David Miller In-Reply-To: <1439572262-10705-1-git-send-email-plyatov@gmail.com> References: <1439572262-10705-1-git-send-email-plyatov@gmail.com> X-Mailer: Mew version 6.6 on Emacs 24.5 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Mon, 17 Aug 2015 14:28:34 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Igor Plyatov Date: Fri, 14 Aug 2015 20:11:02 +0300 > * Due to HW bug, LAN8700 sometimes does not detect presence of energy in the > Ethernet cable in Energy Detect Power-Down mode (e.g while EDPWRDOWN bit is > set, the ENERGYON bit does not asserted sometimes). This is a common bug of > LAN87xx family of PHY chips. > * The lan87xx_read_status() was improved to acquire ENERGYON bit. Its previous > algorythm still not reliable on 100 % and sometimes skip cable plugging. > > Signed-off-by: Igor Plyatov Applied, thanks.