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=-8.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable 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 63A1AC43461 for ; Tue, 15 Sep 2020 23:27:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2092B20732 for ; Tue, 15 Sep 2020 23:27:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="E4eoJo4G" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727381AbgIOX1X (ORCPT ); Tue, 15 Sep 2020 19:27:23 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:42500 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727359AbgIOX0v (ORCPT ); Tue, 15 Sep 2020 19:26:51 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 08FNQepT001080; Tue, 15 Sep 2020 18:26:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1600212400; bh=nR6reMnzuShhnQAUVf9pjPzWzCB1Ke7a/UlmPVYyG4I=; h=Subject:To:CC:References:From:Date:In-Reply-To; b=E4eoJo4Gub8aHeh+fYxpUs6RRFZhFz7e97KAQNVo+srqYCvdnYGuXBIeXVCqEtpVJ 0jlA+DlnTk+jGb0R7BW43MniNxq48Ti1tCiheds+EiPxrRKEGs8xA8hdSyxF4Qoe6a zUGctxY0FVWOri/c2yMIVzieBum+CdPeOh0Mw5ec= Received: from DFLE109.ent.ti.com (dfle109.ent.ti.com [10.64.6.30]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 08FNQe21050737 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 15 Sep 2020 18:26:40 -0500 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Tue, 15 Sep 2020 18:26:39 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Tue, 15 Sep 2020 18:26:39 -0500 Received: from [10.250.38.37] (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 08FNQdNG081051; Tue, 15 Sep 2020 18:26:39 -0500 Subject: Re: [PATCH net-next 1/3] ethtool: Add 100base-FX link mode entries To: Andrew Lunn CC: , , , , , References: <20200915181708.25842-1-dmurphy@ti.com> <20200915181708.25842-2-dmurphy@ti.com> <20200915201014.GC3526428@lunn.ch> From: Dan Murphy Message-ID: Date: Tue, 15 Sep 2020 18:26:34 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200915201014.GC3526428@lunn.ch> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Andrew On 9/15/20 3:10 PM, Andrew Lunn wrote: > On Tue, Sep 15, 2020 at 01:17:06PM -0500, Dan Murphy wrote: >> @@ -160,6 +160,8 @@ static const struct phy_setting settings[] = { >> PHY_SETTING( 100, FULL, 100baseT_Full ), >> PHY_SETTING( 100, FULL, 100baseT1_Full ), >> PHY_SETTING( 100, HALF, 100baseT_Half ), >> + PHY_SETTING( 100, HALF, 100baseFX_Half ), >> + PHY_SETTING( 100, FULL, 100baseFX_Full ), > Hi Dan > > Does 100baseFX_Half make an sense? My understanding of 802.3 section > 26 is that it is always a pair, not a single fibre where you might > need CSMA/CD? I actually questioned that too and looked it up I found these and thought they could be viable http://www.certiology.com/tech-terms/network/100base-fx.html "The 100Base-FX can be used in a maximum length of 412 meters if being used in half-duplex connections or as 2 kilometer lengths in the case of full-duplex transmissions over optical fiber." https://www.cnet.com/products/half-duplex-100basefx-interface-pb7/ Of course I never have seen one myself Dan > Andrew