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=-4.0 required=3.0 tests=BAYES_00, 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 2C7D3C433E0 for ; Sat, 18 Jul 2020 14:44:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 167BE2076A for ; Sat, 18 Jul 2020 14:44:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727851AbgGROop (ORCPT ); Sat, 18 Jul 2020 10:44:45 -0400 Received: from vps0.lunn.ch ([185.16.172.187]:42656 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726574AbgGROoo (ORCPT ); Sat, 18 Jul 2020 10:44:44 -0400 Received: from andrew by vps0.lunn.ch with local (Exim 4.94) (envelope-from ) id 1jwo4p-005lvq-12; Sat, 18 Jul 2020 16:44:35 +0200 Date: Sat, 18 Jul 2020 16:44:35 +0200 From: Andrew Lunn To: Russell King - ARM Linux admin Cc: John Crispin , Matthew Hagan , Jakub Kicinski , Vivien Didelot , Florian Fainelli , "David S. Miller" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Jonathan McDowell , Rob Herring , devicetree@vger.kernel.org Subject: Re: [PATCH 2/2] dt-bindings: net: dsa: qca8k: Add PORT0_PAD_CTRL properties Message-ID: <20200718144435.GA1375379@lunn.ch> References: <2e1776f997441792a44cd35a16f1e69f848816ce.1594668793.git.mnhagan88@gmail.com> <20200716150925.0f3e01b8@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> <53851852-0efe-722e-0254-8652cdfea8fc@phrozen.org> <20200718132011.GQ1551@shell.armlinux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200718132011.GQ1551@shell.armlinux.org.uk> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jul 18, 2020 at 02:20:11PM +0100, Russell King - ARM Linux admin wrote: > On Fri, Jul 17, 2020 at 10:44:19PM +0200, John Crispin wrote: > > in regards to the sgmii clk skew. I never understood the electrics fully I > > am afraid, but without the patch it simply does not work. my eletcric foo is > > unfortunately is not sufficient to understand the "whys" I am afraid. > > Do you happen to know what frequency the clock is? Is it 1.25GHz or > 625MHz? It sounds like it may be 1.25GHz if the edge is important. I'm also a bit clueless when it comes to these systems. I thought the clock was embedded into the SERDES signal? You recover it from the signal? Florian, does the switch have a separate clock input/output? Andrew