From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D4A7CC3A5A3 for ; Thu, 22 Aug 2019 21:12:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 82C92233FC for ; Thu, 22 Aug 2019 21:12:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="Z8rdHmDZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388548AbfHVVML (ORCPT ); Thu, 22 Aug 2019 17:12:11 -0400 Received: from pandora.armlinux.org.uk ([78.32.30.218]:48788 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730991AbfHVVML (ORCPT ); Thu, 22 Aug 2019 17:12:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=6fPuCyNtPPHONbqitxGDkXj/u9ByqXfl6hc0qfPlS5k=; b=Z8rdHmDZCZ53dvugjnLpqbC+L 3Ulx7byW/NVefVjP67+vtLKu+wAT5Gl+DVMlfkoz9480p1Ws/kyZdhIRd9iOh/r7DWi3S75CWgXN8 2V2jeoFQlSP/fmjXEejk2EDl5lmEoip7+NIcOVw/bjIOdlVi3UFHBFXEtoTDtIP+8N9dZnE49Lkwl +eLmdywbkvZFnUOdFwa50KPYjYRXmJMCzMCzIFyXi6QxYTnfrqtkjbOx6l+hvMLLxLTs13k0FGZpC X+ZNFJ9mcz1cWayeuxZOkIMzRxnfXtonFqfNC/L/Z1GB5ImpbxY41df7UDwkAJ7AT5ofiUL5N8+yz P45N4wHlA==; Received: from shell.armlinux.org.uk ([2001:4d48:ad52:3201:5054:ff:fe00:4ec]:48168) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1i0uNE-0000W5-M7; Thu, 22 Aug 2019 22:12:00 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1i0uNA-00081K-Dh; Thu, 22 Aug 2019 22:11:56 +0100 Date: Thu, 22 Aug 2019 22:11:56 +0100 From: Russell King - ARM Linux admin To: =?iso-8859-1?Q?Ren=E9?= van Dorst Cc: Nelson Chang , Frank Wunderlich , netdev@vger.kernel.org, Sean Wang , linux-mips@vger.kernel.org, linux-mediatek@lists.infradead.org, John Crispin , Matthias Brugger , Stefan Roese , "David S . Miller" , linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH net-next v2 2/3] net: ethernet: mediatek: Re-add support SGMII Message-ID: <20190822211156.GV13294@shell.armlinux.org.uk> References: <20190821144336.9259-1-opensource@vdorst.com> <20190821144336.9259-3-opensource@vdorst.com> <20190822144433.GT13294@shell.armlinux.org.uk> <20190822195033.Horde.hEW8FBGNfFrugQOCv0gaDfx@www.vdorst.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20190822195033.Horde.hEW8FBGNfFrugQOCv0gaDfx@www.vdorst.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi Rene, On Thu, Aug 22, 2019 at 07:50:33PM +0000, René van Dorst wrote: > Quoting Russell King - ARM Linux admin : > > Isn't this set for Cisco SGMII as well as for 802.3 1000BASE-X and > > the up-clocked 2500BASE-X modes? > > > > If so, is there a reason why 10Mbps and 100Mbps speeds aren't > > supported on Cisco SGMII links? > > I can only tell a bit about the mt7622 SOC, datasheet tells me that: > > The SGMII is the interface between 10/100/1000/2500 Mbps PHY and Ethernet MAC, > the spec is raised by Cisco in 1999, which is aims for pin reduction compare > with the GMII. It uses 2 differential data pair for TX and RX with clock > embedded bit stream to convey frame data and port ability information. > The core leverages the 1000Base-X PCS and Auto-Negotiation from IEEE 802.3 > specification (clause 36/37). This IP can support up to 3.125G baud for > 2.5Gbps > (proprietary 2500Base-X) data rate of MAC by overclocking. > > Also features tells me: Support 10/100/1000/2500 Mbps in full duplex mode and > 10/100 Mbps in half duplex mode. Yep, that is what I'd expect. Thanks. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up