From mboxrd@z Thu Jan 1 00:00:00 1970 From: William Mills Subject: Re: [meta-ti] Full nohz on TCI6638k2k (KeyStone II) Date: Fri, 26 Apr 2013 11:45:02 -0400 Message-ID: <517AA0FE.4080005@ti.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from devils.ext.ti.com ([198.47.26.153]:46722 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756516Ab3DZPpE (ORCPT ); Fri, 26 Apr 2013 11:45:04 -0400 In-Reply-To: Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Mats Liljegren Cc: linux-omap , meta-ti , Muralidharan Karicheri On 04/26/2013 03:06 AM, Mats Liljegren wrote: > I would like to perform a customer demo running a benchmark > application in full nohz mode on TCI6638k2k target, which as far as I > understand it is a KeyStone II architecture. > > Does anyone know what the best Linux source code is to perform the > nohz port for this board? It should preferably be Linux 3.9 of any RC > level, but 3.8 should work as well. > > I also need a hardware timer to be used as an interrupt source for the > interrupt latency measurements. Any suggestions for framework or > driver to use? > Mats, The team is just now rebasing the bringup work on 3.8.4. You can find their work here: http://arago-project.org/git/projects/?p=linux-keystone.git;a=shortlog;h=refs/heads/release-server/master (The word "server" ~= 3.8 for this archive) Please note that all the master branches are rebuilt from the feature branches in the nightly build script. I think the feature branches get rebased also. The tags of course you can count on. The A15's use the per-core archetecture timer normally. However the SOC has multiple (20) Timer64 peripherals that can be used as well if they are not being used by the DSPs. If you configure which timer64 to use w/ device tree you should be fine. Bill From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from devils.ext.ti.com (devils.ext.ti.com [198.47.26.153]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 538F1E014E4 for ; Fri, 26 Apr 2013 08:45:06 -0700 (PDT) Received: from dflxv15.itg.ti.com ([128.247.5.124]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id r3QFj3Un027793; Fri, 26 Apr 2013 10:45:03 -0500 Received: from DLEE70.ent.ti.com (dlee70.ent.ti.com [157.170.170.113]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id r3QFj2QQ031333; Fri, 26 Apr 2013 10:45:02 -0500 Received: from dlelxv22.itg.ti.com (172.17.1.197) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.2.342.3; Fri, 26 Apr 2013 10:45:02 -0500 Received: from gtwmills.gt.design.ti.com (gtwmills.gt.design.ti.com [158.218.102.52]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id r3QFj2K5007919; Fri, 26 Apr 2013 10:45:02 -0500 Message-ID: <517AA0FE.4080005@ti.com> Date: Fri, 26 Apr 2013 11:45:02 -0400 From: William Mills User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.27) Gecko/20120216 Thunderbird/3.1.19 MIME-Version: 1.0 To: Mats Liljegren References: In-Reply-To: Cc: meta-ti , linux-omap Subject: Re: Full nohz on TCI6638k2k (KeyStone II) X-BeenThere: meta-ti@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Usage and development list for the meta-ti layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Apr 2013 15:45:06 -0000 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit On 04/26/2013 03:06 AM, Mats Liljegren wrote: > I would like to perform a customer demo running a benchmark > application in full nohz mode on TCI6638k2k target, which as far as I > understand it is a KeyStone II architecture. > > Does anyone know what the best Linux source code is to perform the > nohz port for this board? It should preferably be Linux 3.9 of any RC > level, but 3.8 should work as well. > > I also need a hardware timer to be used as an interrupt source for the > interrupt latency measurements. Any suggestions for framework or > driver to use? > Mats, The team is just now rebasing the bringup work on 3.8.4. You can find their work here: http://arago-project.org/git/projects/?p=linux-keystone.git;a=shortlog;h=refs/heads/release-server/master (The word "server" ~= 3.8 for this archive) Please note that all the master branches are rebuilt from the feature branches in the nightly build script. I think the feature branches get rebased also. The tags of course you can count on. The A15's use the per-core archetecture timer normally. However the SOC has multiple (20) Timer64 peripherals that can be used as well if they are not being used by the DSPs. If you configure which timer64 to use w/ device tree you should be fine. Bill