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 BCA03C2D0D2 for ; Fri, 20 Dec 2019 18:01:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9770F2082E for ; Fri, 20 Dec 2019 18:01:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ky1TtQki" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727451AbfLTSB1 (ORCPT ); Fri, 20 Dec 2019 13:01:27 -0500 Received: from mail-pj1-f68.google.com ([209.85.216.68]:54530 "EHLO mail-pj1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727406AbfLTSB0 (ORCPT ); Fri, 20 Dec 2019 13:01:26 -0500 Received: by mail-pj1-f68.google.com with SMTP id kx11so319123pjb.4; Fri, 20 Dec 2019 10:01:26 -0800 (PST) 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=QfkiIhsrv51gpnAU/wXArCyH7nSkKGuTujHi7jMqn60=; b=ky1TtQkiP1ey8yFLZ3pBK1jBDNUUmbFQR2bxVreYkzE+rZiwI0FUyBapYjWRXONV9w dkT5SkAMeZgHxEzHUmWyFNzaOagM4BzkYSx7Na4XB85mNFq8n3U7dR1PHITOdtEpq6PQ Vi+/wLz7ILNe7pcMihESquOKP9orJXJOeaex3LcdMesqkPuPCcVLDXb7taRXA+WU3+H8 uB/deJKXYPPrVVyeaFAR8DQ+4T70Yo30jnZLlRWOlrnzHkMo+iINRLPnLf5PQx5MPCb3 FRQvqzqSH9QgqJhcoz6Ap93iJWEhaNKuHxeD2YIL78CHxwzpbPfTPTlpFDlT9kKPWq71 Oxvw== 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=QfkiIhsrv51gpnAU/wXArCyH7nSkKGuTujHi7jMqn60=; b=pObLgu1N3SKWU2B1sq1J68ZbzoIMgYnqIJ71qi4VH7uEjgpNMRjJGdyesBgqO3PDG9 BPvyVTM96OAkle70ea3ARC1Ae7DeBQUkKddVmbmyWKozvRWeR5oPuZN7ARL0AWYgZBoS 8preXXysI450rE3+lYmAim4plkAJWe8CyKYFj/eDTWsnksaESa8apJgvMC9eTp6OZ9eS ILUww9+W/CAhzefrSKLleKB5FTM55dgxUL1sv/v3SHVn4GDzZGA+A94UVAFBFDMPsT3P EYAVM+9y13Z8Bjy2Q9Xf0o64jtjoYN5s5se7+saEklFvNVZ7esDhKvZtsE86IEvyCDk9 bNFQ== X-Gm-Message-State: APjAAAVaBqm+j65OUxRVaTUrHZ40cfasJxUS++ttVU+QbG/PLumH/gUe 6VL7dz+729BGO5jBLmlOMyM= X-Google-Smtp-Source: APXvYqxiY8v7P2ECjAmG0887Br7C9pWZhpZv3nUsRNTAWgxiBii0nx5tn+BpAqmoAc//Tnwzm0S9IQ== X-Received: by 2002:a17:902:6bc3:: with SMTP id m3mr16045597plt.185.1576864886201; Fri, 20 Dec 2019 10:01:26 -0800 (PST) Received: from localhost (c-73-241-114-122.hsd1.ca.comcast.net. [73.241.114.122]) by smtp.gmail.com with ESMTPSA id u7sm13146794pfh.128.2019.12.20.10.01.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Dec 2019 10:01:25 -0800 (PST) Date: Fri, 20 Dec 2019 10:01:22 -0800 From: Richard Cochran To: Andrew Lunn Cc: netdev@vger.kernel.org, David Miller , devicetree@vger.kernel.org, Florian Fainelli , Heiner Kallweit , Jacob Keller , Mark Rutland , Miroslav Lichvar , Murali Karicheri , Rob Herring , Willem de Bruijn , Wingman Kwok Subject: Re: [PATCH V6 net-next 06/11] net: Introduce a new MII time stamping interface. Message-ID: <20191220180122.GB3846@localhost> References: <28939f11b984759257167e778d0c73c0dd206a35.1576511937.git.richardcochran@gmail.com> <20191217092155.GL6994@lunn.ch> <20191220145712.GA3846@localhost> <20191220153359.GA11117@lunn.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191220153359.GA11117@lunn.ch> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Fri, Dec 20, 2019 at 04:33:59PM +0100, Andrew Lunn wrote: > The Marvell PHY datasheets indicate they support PTP. I've not looked > at how they implement it, and if the current model will work. IIRC, those parts time stamp on the MII bus input, and not in the PHY itself, and so they offer no advantage over MAC time stamping. I suspect that is why there has been so little interest. Thanks, Richard