From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-next v3 0/4] Fix OdroidC2 Gigabit Tx link issue Date: Tue, 29 Nov 2016 19:38:53 -0500 (EST) Message-ID: <20161129.193853.827524417068912706.davem@davemloft.net> References: <1480326409-25419-1-git-send-email-jbrunet@baylibre.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1480326409-25419-1-git-send-email-jbrunet-rdvid1DuHRBWk0Htik3J/w@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: jbrunet-rdvid1DuHRBWk0Htik3J/w@public.gmane.org Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org, khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org, peppe.cavallaro-qxv4g6HH51o@public.gmane.org, alexandre.torgue-qxv4g6HH51o@public.gmane.org, martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org, neolynx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, andrew-g2DYL2Zd6BY@public.gmane.org, narmstrong-rdvid1DuHRBWk0Htik3J/w@public.gmane.org, linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org From: Jerome Brunet Date: Mon, 28 Nov 2016 10:46:45 +0100 > This patchset fixes an issue with the OdroidC2 board (DWMAC + RTL8211F). > The platform seems to enter LPI on the Rx path too often while performing > relatively high TX transfer. This eventually break the link (both Tx and > Rx), and require to bring the interface down and up again to get the Rx > path working again. > > The root cause of this issue is not fully understood yet but disabling EEE > advertisement on the PHY prevent this feature to be negotiated. > With this change, the link is stable and reliable, with the expected > throughput performance. > > The patchset adds options in the generic phy driver to disable EEE > advertisement, through device tree. The way it is done is very similar > to the handling of the max-speed property. Patches 1-3 applied to net-next, thanks. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html