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=-1.0 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 A574FC433E0 for ; Tue, 30 Jun 2020 15:25:42 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 718FD20724 for ; Tue, 30 Jun 2020 15:25:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="zF1e4Hz+"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="o45pXRvj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 718FD20724 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:To:Subject:Message-ID:Date:From:In-Reply-To: References:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=bhkfg5joWHTUUqASiWs2wd/+xFGa2RRqSp85PvNtIkk=; b=zF1e4Hz+Gbtm3ClhV1pDoL3R5 87YI+8D10Qx5azaV+vvLcWT1iXJIX1vz0prhPvE7HXwIYGPVBUHiYupEFGv8Ur6E+whbkPd7FiU/7 n4W3TSGhXZ7jVZojA/Aww2bLD/rm9oT7c7Lv84nHdaaQHflWKTLYpW4oy+MfZIjk7IhaOR/HC3E0B 6usTNWM/fiqXw/tkCD2vbm9IFqgL44afpvRA0YTGJOKdaJ6BhG7l0IuZogsxFQ+as6pC2+uRqm/EQ 7k090t5WKm7PUmxQjsUdGN1QZS91Mi+9dXAzf/NGpl/SzkAuxRGFCO5ulc4QcBMa9wDkoUGwCeL2Q gbzpOkH4g==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jqI7F-0001Gx-Ia; Tue, 30 Jun 2020 15:24:09 +0000 Received: from mail-oi1-x241.google.com ([2607:f8b0:4864:20::241]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jqI76-0001FV-KO for linux-arm-kernel@lists.infradead.org; Tue, 30 Jun 2020 15:24:06 +0000 Received: by mail-oi1-x241.google.com with SMTP id y22so5180046oie.8 for ; Tue, 30 Jun 2020 08:23:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=gMGZtwxkF42O7R8gjwHg1b14ZwEib7oNCbG3iTpGXj0=; b=o45pXRvjHRvW0UFuB6wLojg9daptSVYumx1f4auj39dNjWeVxhJqi37LNnc2cq7oZr 1+ZCXkJsEL+5klTWXzLRuzs4Wv8p1L9VTe8v3PChV+xfmhr+G0OLBXczcUmIGRlVHs9M UIH0xr145kzINs5rkGVFPLfPVUJNaRFrPK/VHoqExb2RWIvUDuMvkQAL59wBdYIAlo1n 60jwoMt4CmTjS904/+yG2CVRPIMZtzwONPdLCN2KkdlgSrbz231i4zCBGorx60OdtDEZ uPIe07Y5ejKOpYfRL5z2d4gXBujvSBrKW5rfGmxjz1fit91vx0ZdwqIzlQH7ZPT7fEBQ AmFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=gMGZtwxkF42O7R8gjwHg1b14ZwEib7oNCbG3iTpGXj0=; b=boGEfBkt8b0RKEXtNXMUoMcmaWrVWBnnAijByzliF1XspiTtRZELgXFgkj6yWs+1rn EPLVjwGJ3luGd0MMnlh5BmJ3vZrG+10A9bhuhXAjLDCwsna6GNIJWyxoek67vQuAAWck lKUBeUhy56jDmOfTFyQUrymda1lnzTscbqesrtq1k3PtvSyEqS+qSO4CWzfFA2rGhOvO CoDbKloss4d/oUPEU6Yd5dN4DR1lILH1Z+wkCOe/HBK2ovuCld5reUWKjf+dbGtzsETJ A4j76WpX7JlHV6Vm2WlpJcKQk9vmA35RtTzjORLL3AFyLKrwIVvya27a/eVu1cossEMS pBZQ== X-Gm-Message-State: AOAM530nAWNHaZFpqPyBrHnAIvQ1TV7trCXdkDhMCJZNhWGrRzEpKOsD xXmML3Voi5M8JK0LMoQZ1JjAqaGSS4uvufEBeek= X-Google-Smtp-Source: ABdhPJzfivDWKv5LJXisIJc/Z1/VfhafE6yGHN6gbojpIuVf8F342/3tyBPUXzuQv7GMnAzrpGJhKvvlCLkP7yaXAPc= X-Received: by 2002:a05:6808:194:: with SMTP id w20mr16775662oic.77.1593530636058; Tue, 30 Jun 2020 08:23:56 -0700 (PDT) MIME-Version: 1.0 References: <20200625140105.14999-1-TheSven73@gmail.com> <20200625140105.14999-2-TheSven73@gmail.com> In-Reply-To: From: Sven Van Asbroeck Date: Tue, 30 Jun 2020 11:23:45 -0400 Message-ID: Subject: Re: [EXT] Re: [PATCH v4 2/2] ARM: imx6plus: enable internal routing of clk_enet_ref where possible To: Andy Duan X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200630_112400_746396_E77D070D X-CRM114-Status: GOOD ( 10.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fabio Estevam , Sascha Hauer , linux-kernel , dl-linux-imx , Pengutronix Kernel Team , Shawn Guo , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Andy, Fabio, On Tue, Jun 30, 2020 at 2:36 AM Andy Duan wrote: > > Sven, no matter PHY supply 125Mhz clock to pad or not, GPR5[9] is to select RGMII > gtx clock source from: > - 0 Clock from pad > - 1 Clock from PLL > > Since i.MX6QP can internally supply clock to MAC, we can set GPR5[9] bit by default. That's true. But on the sabresd I notice that the PHY's ref_clk output is from CLK_25M. The default ref_clk freq for that PHY is 25 MHz, and I don't see anyone change the default in the devicetree. I also see that a 25 MHz crystal is fitted, which also suggests 25 Mhz output. On the imx6, the default ref_clk frequency from ANATOP is 50Mhz. I don't see anyone change that default in the devicetree either. So is it possible that, when we switch GPR5[9] on, the external 25MHz clock is replaced by the internal 50MHz clock? If so, I'm not sure it'll work...? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel