From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.sysgo.com (mail.sysgo.com [62.8.134.5]) by ozlabs.org (Postfix) with ESMTP id C836368505 for ; Tue, 11 Oct 2005 20:37:28 +1000 (EST) Received: from localhost (localhost [127.0.0.1]) by mail.sysgo.com (Postfix) with ESMTP id 90901FB87E for ; Tue, 11 Oct 2005 12:13:46 +0200 (CEST) Received: from donald.sysgo.com (unknown [172.20.1.30]) by mail.sysgo.com (Postfix) with ESMTP id 680FCFB87E for ; Tue, 11 Oct 2005 12:13:46 +0200 (CEST) Received: from kah.ulm.sysgo.com (kah.sysgo.com [172.40.1.2]) by donald.sysgo.com (Postfix) with ESMTP id F3D641590FB for ; Tue, 11 Oct 2005 12:13:40 +0200 (CEST) Received: from gja.ulm.sysgo.com (gja.ulm.sysgo.com [172.40.1.130]) by kah.ulm.sysgo.com (8.9.3/8.8.8) with ESMTP id MAA22986 for ; Tue, 11 Oct 2005 12:26:44 +0200 From: Gerhard Jaeger To: linuxppc-embedded@ozlabs.org Date: Tue, 11 Oct 2005 12:13:39 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Message-Id: <200510111213.39859.g.jaeger@sysgo.com> Subject: Which PHY connection to use on MPC8541... List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi list, we're currently designing a custon MPC8541 based board having three ethernet connections. For some reasons, we'd like to use the FCC1 and 2 + TSEC1. From what I see from the docs, it should be no problem to connect i.e. a quad phy (for FCC1/2) and a gigabit phy (for TSEC1) to the EC_MDIO of the TSEC as long as they have different addresses. I don't want to use the GPIO stuff for MDIO. The question is, what does this mean to the drivers? For the gianfar driver this should be okay and from what I see, the upcoming fs_enet driver supports also a phy connected either to the GPIOs (bitbanging) or the TSEC MDIO. Is this right, or am I missing something essential? Would it be better to use the GPIO-MDIO for the FCC phy and the TSEC-MDIO for the TSEC phy? TIA Gerhard