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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 98332C4360C for ; Wed, 16 Oct 2019 08:37:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C92C21835 for ; Wed, 16 Oct 2019 08:37:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389101AbfJPIhb (ORCPT ); Wed, 16 Oct 2019 04:37:31 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:34685 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726804AbfJPIhb (ORCPT ); Wed, 16 Oct 2019 04:37:31 -0400 Received: from kresse.hi.pengutronix.de ([2001:67c:670:100:1d::2a]) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1iKeoC-0001WI-RN; Wed, 16 Oct 2019 10:37:28 +0200 Message-ID: <0426ad33c45627627512f636c45e35481d2b77da.camel@pengutronix.de> Subject: Re: [PATCH net-next 0/1] Add BASE-T1 PHY support From: Lucas Stach To: Heiner Kallweit , Christian Herber , "davem@davemloft.net" Cc: "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" Date: Wed, 16 Oct 2019 10:37:27 +0200 In-Reply-To: <8c15b855-6947-9930-c3df-71a64fbff33b@gmail.com> References: <20190815153209.21529-1-christian.herber@nxp.com> <8c15b855-6947-9930-c3df-71a64fbff33b@gmail.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.30.5-1.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::2a X-SA-Exim-Mail-From: l.stach@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Fr, 2019-08-16 at 22:59 +0200, Heiner Kallweit wrote: > On 15.08.2019 17:32, Christian Herber wrote: > > This patch adds basic support for BASE-T1 PHYs in the framework. > > BASE-T1 PHYs main area of application are automotive and industrial. > > BASE-T1 is standardized in IEEE 802.3, namely > > - IEEE 802.3bw: 100BASE-T1 > > - IEEE 802.3bp 1000BASE-T1 > > - IEEE 802.3cg: 10BASE-T1L and 10BASE-T1S > > > > There are no products which contain BASE-T1 and consumer type PHYs like > > 1000BASE-T. However, devices exist which combine 100BASE-T1 and 1000BASE-T1 > > PHYs with auto-negotiation. > > Is this meant in a way that *currently* there are no PHY's combining Base-T1 > with normal Base-T modes? Or are there reasons why this isn't possible in > general? I'm asking because we have PHY's combining copper and fiber, and e.g. > the mentioned Aquantia PHY that combines NBase-T with 1000Base-T2. There are PHYs combining both Base-T1 and other Base-T capabilities. E.g. the Broadcom BCM54811 support both Base-T1, as well as 1000BASE-T and 100BASE-TX. Regards, Lucas