From mboxrd@z Thu Jan 1 00:00:00 1970 From: sboyd@codeaurora.org (Stephen Boyd) Date: Mon, 19 Aug 2013 17:57:48 -0700 Subject: Enable arm_global_timer for Zynq brakes boot In-Reply-To: <140fc91a-cc81-418e-8a5e-413bbf47834e@CO1EHSMHS025.ehs.local> References: <20130809172757.GD14845@codeaurora.org> <52090B43.9090000@codeaurora.org> <5209120D.1010701@linaro.org> <9b07d8a3-b650-4147-b952-9bcfc1172c51@VA3EHSMHS025.ehs.local> <5209152F.5020307@linaro.org> <86b18b0d-08e1-4899-86ea-ed22d3d36dee@DB8EHSMHS028.ehs.local> <5212A394.5020109@codeaurora.org> <140fc91a-cc81-418e-8a5e-413bbf47834e@CO1EHSMHS025.ehs.local> Message-ID: <20130820005748.GA23960@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 08/19, S??ren Brinkmann wrote: > Hi Stephen, > > On Mon, Aug 19, 2013 at 04:00:36PM -0700, Stephen Boyd wrote: > > On 08/16/13 10:28, S??ren Brinkmann wrote: > > > On Mon, Aug 12, 2013 at 07:02:39PM +0200, Daniel Lezcano wrote: > > >> On 08/12/2013 06:53 PM, S??ren Brinkmann wrote: > > >>> It's actually present. I have a clean 3.11-rc3 and the only changes are > > >>> my patch to enable the GT and Stephen's fix. > > >>> The cpuidle stats show both idle states being used. > > >> Ah, right. The tick_broadcast_mask is not set because the arm global > > >> timer has not the CLOCK_EVT_FEAT_C3STOP feature flag set. > > > Just to check in. Do you want any additional testing done? Or can I > > > expect Stephens fix to get merged, so Zynq can use the GT? > > > > > > > I was curious, can you use just the first hunk of the patch that applied > > to tick-broadcast.c to fix the problem? I think the answer is yes. > > Yes, that seems to be enough. > Great thank you. I will split the patch into two pieces. That way we can discuss the merit of always using a timer that doesn't suffer from FEAT_C3_STOP over a timer that does. -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation