From mboxrd@z Thu Jan 1 00:00:00 1970 From: andrew@lunn.ch (Andrew Lunn) Date: Thu, 6 Mar 2014 18:23:39 +0100 Subject: [PATCH] ARM: mvebu: add Device Tree for the Armada 385 RD board In-Reply-To: <20140306160213.GA4327@arch.cereza> References: <1394107868-26094-1-git-send-email-gregory.clement@free-electrons.com> <20140306131429.GJ4780@lunn.ch> <5318779C.8030901@free-electrons.com> <20140306142117.GL4780@lunn.ch> <531886B4.2070002@free-electrons.com> <20140306144600.GM4780@lunn.ch> <53188B73.4000109@free-electrons.com> <53189892.5090502@free-electrons.com> <20140306160213.GA4327@arch.cereza> Message-ID: <20140306172339.GP4780@lunn.ch> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org > Can't we fix this so the probe order doesn't affect the name? > > Is that sane? You are not supposed to trust the device name, since probing can happen in parallel, on different buses. udev should have rules to name the interfaces based on the MAC address. On my Debian system i have: /etc/udev/rules.d/70-persistent-net.rules So what is important is that the MAC addresses are assigned correctly to the device. And DT does that based on MMIO address, so should be reliable, independent of probe order. Andrew From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Lunn Subject: Re: [PATCH] ARM: mvebu: add Device Tree for the Armada 385 RD board Date: Thu, 6 Mar 2014 18:23:39 +0100 Message-ID: <20140306172339.GP4780@lunn.ch> References: <1394107868-26094-1-git-send-email-gregory.clement@free-electrons.com> <20140306131429.GJ4780@lunn.ch> <5318779C.8030901@free-electrons.com> <20140306142117.GL4780@lunn.ch> <531886B4.2070002@free-electrons.com> <20140306144600.GM4780@lunn.ch> <53188B73.4000109@free-electrons.com> <53189892.5090502@free-electrons.com> <20140306160213.GA4327@arch.cereza> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20140306160213.GA4327@arch.cereza> Sender: linux-kernel-owner@vger.kernel.org To: Ezequiel Garcia Cc: Gregory CLEMENT , Thomas Petazzoni , Andrew Lunn , Jason Cooper , Tawfik Bayouk , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nadav Haklai , Lior Amsalem , linux-arm-kernel@lists.infradead.org, Sebastian Hesselbarth List-Id: devicetree@vger.kernel.org > Can't we fix this so the probe order doesn't affect the name? > > Is that sane? You are not supposed to trust the device name, since probing can happen in parallel, on different buses. udev should have rules to name the interfaces based on the MAC address. On my Debian system i have: /etc/udev/rules.d/70-persistent-net.rules So what is important is that the MAC addresses are assigned correctly to the device. And DT does that based on MMIO address, so should be reliable, independent of probe order. Andrew