From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anton Vorontsov Subject: Re: Marvell 88E609x switch? Date: Fri, 27 Feb 2009 18:18:15 +0300 Message-ID: <20090227151815.GA7686@oksana.dev.rtsoft.ru> References: <49A5B877.8080403@mlbassoc.com> <20090226151107.GN17040@xi.wantstofly.org> <49A6B991.2090703@mlbassoc.com> <20090226155726.GO17040@xi.wantstofly.org> <49A73E00.7050406@mlbassoc.com> <20090227011903.GS17040@xi.wantstofly.org> <49A7DBA2.8060605@mlbassoc.com> <20090227125211.GV17040@xi.wantstofly.org> <49A7E920.2020601@mlbassoc.com> <20090227142548.GA17040@xi.wantstofly.org> Reply-To: avorontsov@ru.mvista.com Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1251 Cc: Gary Thomas , Kumar Gala , Andy Fleming , netdev@vger.kernel.org, Li Yang To: Lennert Buytenhek Return-path: Received: from [213.79.90.228] ([213.79.90.228]:28745 "EHLO buildserver.ru.mvista.com" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754234AbZB0Prb (ORCPT ); Fri, 27 Feb 2009 10:47:31 -0500 Content-Disposition: inline In-Reply-To: <20090227142548.GA17040@xi.wantstofly.org> Sender: netdev-owner@vger.kernel.org List-ID: On Fri, Feb 27, 2009 at 03:25:48PM +0100, Lennert Buytenhek wrote: > On Fri, Feb 27, 2009 at 06:22:40AM -0700, Gary Thomas wrote: > > > >> However, the network subsystem still can't locate it. It may be > > >> a complication of the OF stuff and how the [gianfar] network > > >> device knows what PHY to look at. > > >> > > >> starting network interfaces... > > >> 24520:01 not found > > >> eth0: Could not attach to PHY > > > > > > It's correct that eth0 should not associate with a PHY -- since the > > > MAC connects to the switch chip over GMII/RGMII/SGMII, there is no > > > PHY involved. > > > > Yes, but it's expecting to be able to talk to the PHYLIB layer > > and ask things like speed, duplex, link state, etc. > > > > > Is the gianfar driver refusing to up the interface without a PHY? > > > It shouldn't do that -- IMHO it's perfectly fine to not have a PHY > > > on your ethernet MAC. > > > > It seems so, yes. I tried disabling the PHY connection in the OF > > tree and now eth0 doesn't even try to come up :-( > > gianfar authors/maintainers: is there a way of using gianfar purely > as a (R)(G)MII transport, i.e. without it trying to talk to a PHY? > Gary is trying to use it to just pass packets to another > (R)(G)MII-speaking chip that doesn't have a PHY interface, but gianfar > seems to bail out if you don't give it a PHY to talk to. You can use fixed-link property in the device tree, and CONFIG_FIXED_PHY driver. See arch/powerpc/boot/dts/mpc8349emitx.dts as an example, and Documentation/powerpc/dts-bindings/fsl/tsec.txt for the fixed-link's fields meaning. -- Anton Vorontsov email: cbouatmailru@gmail.com irc://irc.freenode.net/bd2