Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758285AbXIKPvt (ORCPT ); Tue, 11 Sep 2007 11:51:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753413AbXIKPvl (ORCPT ); Tue, 11 Sep 2007 11:51:41 -0400 Received: from mailhub.linpro.no ([213.236.139.167]:34974 "EHLO mailhub.linpro.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752539AbXIKPvk convert rfc822-to-8bit (ORCPT ); Tue, 11 Sep 2007 11:51:40 -0400 From: =?iso-8859-1?Q?Dag-Erling_Sm=F8rgrav?= To: mgross@linux.intel.com Cc: linux-kernel@vger.kernel.org Subject: Re: [RFC+PATCH] RTC calibration References: <20070911152323.GA17650@linux.intel.com> Date: Tue, 11 Sep 2007 17:51:36 +0200 In-Reply-To: <20070911152323.GA17650@linux.intel.com> (Mark Gross's message of "Tue, 11 Sep 2007 08:23:23 -0700") Message-ID: User-Agent: Gnus/5.110004 (No Gnus v0.4) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 830 Lines: 22 Mark Gross writes: > Why not use NTP? Because NTP is a completely different beast. NTP is used to keep a software clock synchronized with a remote source. This software clock is usually implemented as a software PLL on top of a high-resolution hardware clock, with the remote clock serving as frequency reference. What I need to do, however, is calibrate a low-resolution hardware clock using a trusted reference (which could very well be a software clock maintained by NTP). DES -- Dag-Erling Sm?rgrav Senior Software Developer Linpro AS - www.linpro.no - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/