From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shilimkar Subject: Re: [PATCH V5] ARM: OMAP5/DRA7: realtime_counter: Configure CNTFRQ register Date: Thu, 10 Oct 2013 09:12:14 -0400 Message-ID: <5256A7AE.6000605@ti.com> References: <1381391028-4189-1-git-send-email-r.sricharan@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from arroyo.ext.ti.com ([192.94.94.40]:43763 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753264Ab3JJNMn (ORCPT ); Thu, 10 Oct 2013 09:12:43 -0400 In-Reply-To: <1381391028-4189-1-git-send-email-r.sricharan@ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Sricharan R , tony@atomide.com Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, nm@ti.com, Rajendra Nayak , Marc Zyngier , Mark Rutland On Thursday 10 October 2013 03:43 AM, Sricharan R wrote: > From: R Sricharan > > The realtime counter called master counter, produces the count > used by the private timer peripherals in the MPU_CLUSTER. The > CNTFRQ per cpu register is used to denote the frequency of the counter. > Currently the frequency value is passed from the > DT file, but this is not scalable when we have other non-DT guest > OS. This register must be set to the right value by the > secure rom code. Setting this register helps in propagating the right > frequency value across OSes. > > More discussions and the reason for adding this in a non-DT > way can be seen from below. > http://www.mail-archive.com/linux-omap@vger.kernel.org/msg93832.html > > So configuring this secure register for all the cpus here. > > Cc: Santosh Shilimkar > Cc: Nishanth Menon > Cc: Rajendra Nayak > Cc: Marc Zyngier > Cc: Mark Rutland > Cc: Tony Lindgren > Tested-by: Nishanth Menon > Acked-by: Santosh Shilimkar > Signed-off-by: Sricharan R > --- > [V5] Removed the use of extern variable in omap-smp.c > as per suggestion from Santosh Shilimkar > Thanks for the updates Sricharan. Looks fine now. Tony, Can you apply this version if you are fine with it. Regards, Santosh