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=-2.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 61A8FC0650F for ; Mon, 5 Aug 2019 17:29:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 39A92208E3 for ; Mon, 5 Aug 2019 17:29:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="oWl/1lDA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729838AbfHER3X (ORCPT ); Mon, 5 Aug 2019 13:29:23 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:34382 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727460AbfHER3X (ORCPT ); Mon, 5 Aug 2019 13:29:23 -0400 Received: by mail-pg1-f196.google.com with SMTP id n9so33869515pgc.1; Mon, 05 Aug 2019 10:29:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=vJ3mUAXnht9x3y+33TQvsi1uRE8B830UjJ3acIHYJ90=; b=oWl/1lDALfYW3GNKzb72LvF5n2rfGE0enQNzxE6b0rLyiJ3VNErVsxXSrfbm/45qk4 cyaSArivKzICI7lIQgFMhybtu5dlL7Cg+ZgyIk2otckXySw6JJvmBteLmLVPhUZ+XaZG 480pRyviX2sXNEUq+HAszcxEk8i+KJg2rtIh6r18ZTtv3guFhZLPIqDseSDuV5+i4UAr edzTcl6/7hETGCP/56txQZ80o0bq6ewdzgN1cvwXTkPj8MLgW15ZVGHkKIxUuUwIv7nV cIeWLYso1auz0xXqTHFz2sguFVk9Jkn+qy/+sSgNxpJZymdVlnGzsDTR9OIh1mEwgUHV i6Ww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=vJ3mUAXnht9x3y+33TQvsi1uRE8B830UjJ3acIHYJ90=; b=N79BJvVefi1pvxcslK/IQsvjo/+Uc7Ny35lPooygcWofu7AjDTE74UoF01m2DXGW2b +0Ar7JZs04R44lMfLw8rFraBUfdcm5HcJBPyU+/kyGZANgiL9k4lxiy7qd0Mr/8rIDpK QdScEFSC4YesnB/D0ZipGJSz3zEi/YG2AcASt88wv5tbyre56KMI2bOV6s+XxeIHgtal lU7+tLSwIuAKJvmh/wacPTyFLIb8PqMnLIISR9DuF4RGTOD3FQsSeLbRrG/+cHII7Eq4 /RwSukuqJIgacZBg1qsSzHdExx+pxXaID+3/+TNW76VPek5Hg7r8JvljqkfvmTs9hmuj mr3g== X-Gm-Message-State: APjAAAWx0iV1vu69zWjoHLkDsF4rPUc/VY+iocZ7ol5RW0IcB+LiqchT y0zOMPtok3VXMDXQpYIFQWU= X-Google-Smtp-Source: APXvYqxX/G5NAcQkUPvp6TuQiwGWSETxu0bAFqSp4IyJw5OQcmt3zNt01++yFLv78lbrtnoYn1pqzA== X-Received: by 2002:a62:1456:: with SMTP id 83mr74472713pfu.228.1565026162760; Mon, 05 Aug 2019 10:29:22 -0700 (PDT) Received: from localhost (c-73-222-71-142.hsd1.ca.comcast.net. [73.222.71.142]) by smtp.gmail.com with ESMTPSA id f12sm76047963pgo.85.2019.08.05.10.29.21 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 05 Aug 2019 10:29:22 -0700 (PDT) Date: Mon, 5 Aug 2019 10:29:20 -0700 From: Richard Cochran To: Hubert Feurstein Cc: Andrew Lunn , netdev , lkml , Vivien Didelot , Florian Fainelli , "David S. Miller" Subject: Re: [PATCH net-next v2] net: dsa: mv88e6xxx: extend PTP gettime function to read system clock Message-ID: <20190805172920.GB1552@localhost> References: <20190805082642.12873-1-hubert.feurstein@vahle.at> <20190805135838.GF24275@lunn.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Mon, Aug 05, 2019 at 07:12:40PM +0200, Hubert Feurstein wrote: > It got improved, but you still have the unpredictable latencies caused by the > mdio_done-completion (=> wait_for_completion_timeout) in imx_fec. Yes, that is the important point. Please take a look at other mmi_bus.write() implementations and see if you can place the timestamps into the mii_bus layer. Thanks, Richard