Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759848AbbLCKhR (ORCPT ); Thu, 3 Dec 2015 05:37:17 -0500 Received: from mail-pa0-f52.google.com ([209.85.220.52]:34045 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759840AbbLCKhI (ORCPT ); Thu, 3 Dec 2015 05:37:08 -0500 Date: Thu, 3 Dec 2015 16:07:03 +0530 From: Viresh Kumar To: Ben Gamari Cc: Sudeep Holla , Thomas Abraham , Sylwester Nawrocki , Michael Turquette , Kukjin Kim , Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Lukasz Majewski , Heiko Stuebner , Chanwoo Choi , Kevin Hilman , Javier Martinez Canillas , Tobias Jakobi , Anand Moon , linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, b.zolnierkie@samsung.com Subject: Re: [PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Message-ID: <20151203103703.GC2097@ubuntu> References: <1449091167-20758-1-git-send-email-ben@smart-cactus.org> <20151203060527.GH4302@ubuntu> <877fkv4ylk.fsf@smart-cactus.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <877fkv4ylk.fsf@smart-cactus.org> 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 Content-Length: 2461 Lines: 58 On 03-12-15, 11:26, Ben Gamari wrote: > Viresh Kumar writes: > > But, before I start reviewing this series, I have few comments. > > - We weren't able to use cpufreq-dt driver for big LITTLE platforms > > earlier, as it never had multi cluster support and we wanted > > clock-sharing information via DT. > > Fair enough. > > > - That is all fixed now. > > I did not see any mention of this in the cpufreq-dt driver binding > documentation, otherwise I would have tried going this route. > > Do you have any references? I'd be happy to examine what would be > necessary to go this route although, being an independent contributor, > it may take time. You wouldn't find in cpufreq-dt documentation as its not specific to that. I have seen you DT patches now, and you have created the OPP tables mostly correctly. Just create the cpufreq-platform device for cpufreq-dt instead of arm-big-little one. And it should just work. > > - I want Samsung's big LITTLE platforms to use cpufreq-dt and drop > > arm_big_little driver completely. > > That sounds like a great direction going forward. However, I would still > kindly request that you consider this series. > > The existence of future plans of course does not change the fact that > users have real hardware today; hardware that they have spent money on > and would like to use. Cpufreq support has already been deferred once > for similar reasons of interface churn which essentially forestalled > working functionality from entering the kernel by eight months; I'd > really like to avoid having this happen again. I am not talking about any future plans here that need some work to be done. Its all working today, you just need to use a different driver. > Sounds reasonable to me. However, I'd just like to reiterate that this > line of work can be pursued independently from the upstreaming of this > series. I think this is the right time to upstream the right solution. Just try it once, if you face lots of difficulties or issues, then we can ofcourse see.. NOTE: Check how OPP nodes are required to be created now in linux-next. They should be named like opp@. Something I noticed in your DTs. -- viresh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/