From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Vosjy-0001Px-2l for barebox@lists.infradead.org; Fri, 06 Dec 2013 10:34:35 +0000 Date: Fri, 6 Dec 2013 11:34:09 +0100 From: Sascha Hauer Message-ID: <20131206103409.GC24559@pengutronix.de> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: How to debug Ethernet connectivity To: Atilla Filiz Cc: barebox@lists.infradead.org Hi Atilla, On Fri, Dec 06, 2013 at 11:21:25AM +0100, Atilla Filiz wrote: > Hello > > I have been tasked to debug a port of Barebox to our custom board. It > has one Ethernet interface. All network related(dhcp, ping ...) tasks > fail with "Network is down" error, although the link lights on my > switch are on. So I did this on 2013.06: > > --- barebox-2013.06.0.orig/net/ > eth.c 2013-06-02 12:24:06.000000000 +0200 > +++ barebox-2013.06.0/net/eth.c 2013-12-03 16:52:40.428089000 +0100 > @@ -142,12 +142,16 @@ > > if (force || is_timeout(last_link_check, 5 * SECOND) || > !eth_current->phydev->link) { > ret = phy_update_status(eth_current->phydev); > if (ret) > return ret; > last_link_check = get_time_ns(); > } > > + return 0; > return eth_current->phydev->link ? 0 : -ENETDOWN; > } > > This bypasses link detection and assumes the link is always up. This > way, I got dhcp, ping and tftp working. > > How can I debug this further to hunt down the Ethernet problem? > Something seems wrong with my PHY settings. This is an iMX27 based > board. Which files/functions/structures do I need to check? Most likely the phy_addr field in fec_platform_data is wrong. It could also be that the pinmux for the MDIO lines to the phy is misconfigured. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox