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=-2.3 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 D7F86C7618F for ; Tue, 16 Jul 2019 16:41:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ACF572064B for ; Tue, 16 Jul 2019 16:41:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="sBB66Ifd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388017AbfGPQl1 (ORCPT ); Tue, 16 Jul 2019 12:41:27 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:38460 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726722AbfGPQl0 (ORCPT ); Tue, 16 Jul 2019 12:41:26 -0400 Received: by mail-pg1-f196.google.com with SMTP id f5so881772pgu.5; Tue, 16 Jul 2019 09:41:26 -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=k81iFqdeZm4Oz+WY2E6pPuUPc3zBMN3KKPiuWR1MJ9o=; b=sBB66Ifd/s/2oRZNno9OSfzuYtZ93G/xGkhk5u459QHCjAw/R8KwjNuqYCEZ6QfWMb zyp78upwG+HzDrOrHACtGhECAgd3gIqdZUxUukC4buAMArOAyYvqiHoloKlzm3/8urwH 6Qu06cNmrnSc/fGxhvmVNj7pDLn2J7/2oEkhwMtwzYW+s4FTALWVtaJNkUEEMDZGPjl2 +89GcfrS96OHd+dwpjhKIOjN1upK+TEfaxi8GXZZt83G2AgcTxCVXZCEas/WNnUKat9T PoSJzmye5lOrLiKxjAWKpEnrQesVl2xlFU5VKvarjLyAQOJMkSgxIvoIcerBTiBxUNW6 pBKg== 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=k81iFqdeZm4Oz+WY2E6pPuUPc3zBMN3KKPiuWR1MJ9o=; b=WyTkQAFtnYKv2fGTFYc73eXPc7gM819YHbuU0WDZG8DvII7k83P5lcI93h3V53ypNp C4a7JYUpxhT6YYdsMdGkwFrLx8j2Xd2CFDYiI8hrXFsQlIdpc/uRUTNYf+STYqYpyIXm iFEAzr0bhDek3ZHdOGh5HtP78MBXWRvRTWzk0Zg84W5OEnlsu4cqrvR0tgUwEtY+7hU5 X2yeOA0MR4DQgGncNdjsUuQcGBLPDziM5eoJSm6zgbeziWSXOygrjGf1JZ2u/8HN7/zj IxM0YZX3a+aGLJXnZaFwRlsxsnMHtHIqbNhvsnWiRn2U8tqhH5xh4SYD14m3/FyMh2ox KK+g== X-Gm-Message-State: APjAAAX6rwfMM0dV7oDECbJq3XH2xIZi8ycVDqWNR1uP1aKys/2753J/ OG+sBkhVogEfVUKDuDcwirs= X-Google-Smtp-Source: APXvYqzg2QyqXbFeIfcwR4DcuzKJ0QZaYuFyr9wBW3SrTs9ty3dpPFm5UU0hLqb3Mt3X8TzoJa1SaA== X-Received: by 2002:a63:7b4d:: with SMTP id k13mr34417480pgn.182.1563295286068; Tue, 16 Jul 2019 09:41:26 -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 b190sm7312039pga.37.2019.07.16.09.41.24 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 16 Jul 2019 09:41:25 -0700 (PDT) Date: Tue, 16 Jul 2019 09:41:23 -0700 From: Richard Cochran To: Felipe Balbi Cc: netdev@vger.kernel.org, Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , x86@kernel.org, linux-kernel@vger.kernel.org, "Christopher S . Hall" Subject: Re: [RFC PATCH 0/5] PTP: add support for Intel's TGPIO controller Message-ID: <20190716164123.GB2125@localhost> References: <20190716072038.8408-1-felipe.balbi@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190716072038.8408-1-felipe.balbi@linux.intel.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 16, 2019 at 10:20:33AM +0300, Felipe Balbi wrote: > TGPIO is a new IP which allows for time synchronization between systems > without any other means of synchronization such as PTP or NTP. The > driver is implemented as part of the PTP framework since its features > covered most of what this controller can do. Can you provide some background on this new HW? Is the interface copper wires between chips? Or is it perhaps coax between hosts? Thanks, Richard