From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH] ARM: OMAP2+: Get rid of custom OMAP_32K_TIMER_HZ Date: Thu, 31 Jan 2013 16:37:28 +0100 Message-ID: <1524396.4DaQLsSWOZ@wuerfel> References: <1359646320-9086-1-git-send-email-santosh.shilimkar@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: Received: from moutng.kundenserver.de ([212.227.126.186]:59605 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751484Ab3AaPhq (ORCPT ); Thu, 31 Jan 2013 10:37:46 -0500 In-Reply-To: <1359646320-9086-1-git-send-email-santosh.shilimkar@ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-arm-kernel@lists.infradead.org Cc: Santosh Shilimkar , Russell King , Tony Lindgren , John Stultz , linux-omap@vger.kernel.org On Thursday 31 January 2013 21:02:00 Santosh Shilimkar wrote: > The timekeeping doesn't depend on HZ value in presence of fine grained > clocksource and hence there should not be any time drift because of HZ > value which was chosen to be divisor of 32768. > > OMAP has been using HZ = 128 value to avoid any time drift issues > because of 32768 HZ clock. But with various measurements performed > with HZ = 100, no time drift is observed and it also proves the > point about HZ not having impact on time keeping on OMAP. > > Very informative thread on this topic is here: > https://lkml.org/lkml/2013/1/29/435 > > Special thanks to John Stulz, Arnd Bergmann and Russell King for their > valuable suggestions. > > Cc: Arnd Bergmann > Cc: Russell King > Cc: John Stultz > Cc: Tony Lindgren Acked-by: Arnd Bergmann Thanks so much for looking into this!