From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757333AbcH3QL5 (ORCPT ); Tue, 30 Aug 2016 12:11:57 -0400 Received: from foss.arm.com ([217.140.101.70]:43928 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755670AbcH3QLy (ORCPT ); Tue, 30 Aug 2016 12:11:54 -0400 Date: Tue, 30 Aug 2016 17:11:58 +0100 From: Juri Lelli To: Vincent Guittot Cc: linux-kernel , "linux-pm@vger.kernel.org" , LAK , "devicetree@vger.kernel.org" , Peter Zijlstra , Rob Herring , Mark Rutland , Russell King - ARM Linux , Sudeep Holla , Lorenzo Pieralisi , Catalin Marinas , Will Deacon , Morten Rasmussen , Dietmar Eggemann , Mark Brown , Pawel Moll , Ian Campbell , Kumar Gala , Maxime Ripard , Olof Johansson , Gregory CLEMENT , Paul Walmsley , Linus Walleij , Chen-Yu Tsai , Thomas Petazzoni Subject: Re: [PATCH v6 1/8] Documentation: arm: define DT cpu capacity-dmips-mhz bindings Message-ID: <20160830161158.GE9337@e106622-lin> References: <1468932048-31635-1-git-send-email-juri.lelli@arm.com> <1468932048-31635-2-git-send-email-juri.lelli@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 16/08/16 11:02, Vincent Guittot wrote: > On 19 July 2016 at 14:40, Juri Lelli wrote: > > ARM systems may be configured to have cpus with different power/performance > > characteristics within the same chip. In this case, additional information > > has to be made available to the kernel (the scheduler in particular) for it > > to be aware of such differences and take decisions accordingly. > > > > Therefore, this patch aims at standardizing cpu capacities device tree > > bindings for ARM platforms. Bindings define cpu capacity-dmips-mhz > > parameter, to allow operating systems to retrieve such information from > > the device tree and initialize related kernel structures, paving the way > > for common code in the kernel to deal with heterogeneity. > > [...] > > FWIW, Acked-by Vincent Guittot > Thanks! Best, - Juri