From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?iso-8859-1?Q?M=E5ns_Rullg=E5rd?= Subject: Re: [PATCH net-next v2 3/4] Documentation: net: phy: Add blurb about RGMII Date: Wed, 30 Nov 2016 13:43:34 +0000 Message-ID: References: <20161127184449.12351-1-f.fainelli@gmail.com> <20161127184449.12351-4-f.fainelli@gmail.com> <583B5D3B.4040108@codeaurora.org> <063D6719AE5E284EB5DD2968C1650D6DB023015E@AcuExch.aculab.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Cc: 'Florian Fainelli' , Timur Tabi , "netdev\@vger.kernel.org" , "davem\@davemloft.net" , "andrew\@lunn.ch" , "sf84\@laposte.net" , "martin.blumenstingl\@googlemail.com" , "alexandre.torgue\@st.com" , "peppe.cavallaro\@st.com" , "jbrunet\@baylibre.com" To: David Laight Return-path: Received: from unicorn.mansr.com ([81.2.72.234]:36902 "EHLO unicorn.mansr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753112AbcK3Nnj (ORCPT ); Wed, 30 Nov 2016 08:43:39 -0500 In-Reply-To: <063D6719AE5E284EB5DD2968C1650D6DB023015E@AcuExch.aculab.com> (David Laight's message of "Wed, 30 Nov 2016 12:32:04 +0000") Sender: netdev-owner@vger.kernel.org List-ID: David Laight writes: > From: Florian Fainelli >> Sent: 27 November 2016 23:03 >> Le 27/11/2016 14:24, Timur Tabi a crit : >> >> + * PHY device drivers in PHYLIB being reusable by nature, being able to >> >> + configure correctly a specified delay enables more designs with >> >> similar delay >> >> + requirements to be operate correctly >> > >> > Ok, this one I don't know how to fix. I'm not really sure what you're >> > trying to say. >> >> What I am trying to say is that once a PHY driver properly configures a >> delay that you have specified, there is no reason why this is not >> applicable to other platforms using this same PHY driver. > > As has been stated earlier it can depend on the track lengths on the > board itself. > (Although 1ns is about 1 foot - so track delays of that length are unlikely.) There could be a delay element. -- Måns Rullgård