linux-kernel - Re: [RFC+PATCH] RTC calibration

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Message-ID: <ujr642h2oaf.fsf@false.linpro.no>
Date:	Tue, 11 Sep 2007 17:51:36 +0200
From:	Dag-Erling Smørgrav <des@...pro.no>
To:	mgross@...ux.intel.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [RFC+PATCH] RTC calibration

Mark Gross <mgross@...ux.intel.com> 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 Smørgrav
Senior Software Developer
Linpro AS - www.linpro.no
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