Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933042Ab3HGSvl (ORCPT ); Wed, 7 Aug 2013 14:51:41 -0400 Received: from avon.wwwdotorg.org ([70.85.31.133]:46514 "EHLO avon.wwwdotorg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932563Ab3HGSvh (ORCPT ); Wed, 7 Aug 2013 14:51:37 -0400 Message-ID: <52029736.8040007@wwwdotorg.org> Date: Wed, 07 Aug 2013 12:51:34 -0600 From: Stephen Warren User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130510 Thunderbird/17.0.6 MIME-Version: 1.0 To: Viresh Kumar CC: rjw@sisk.pl, swarren@nvidia.com, linaro-kernel@lists.linaro.org, patches@linaro.org, cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, mturquette@linaro.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 5/6] ARM: Tegra: start using cpufreq-cpu0 driver References: <6610c86618b781b00eba446ca19035e077d99691.1375886595.git.viresh.kumar@linaro.org> <520287EA.5060508@wwwdotorg.org> <5202898A.6050006@wwwdotorg.org> In-Reply-To: X-Enigmail-Version: 1.4.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1040 Lines: 22 On 08/07/2013 11:59 AM, Viresh Kumar wrote: > On 7 August 2013 23:23, Stephen Warren wrote: >> That link only describes why we shouldn't have a dedicated compatible >> value for cpufreq. I certainly agree with that. However, I think it's >> reasonable that whatever code binds to: >> >> compatible = "arm,cortex-a9"; >> >> ... should instantiate any virtual devices that relate to the CPU. > > But how would we know here if platform really wants us to probe > cpufreq-cpu0 driver? On multiplatform kernel there can be multiple > cpufreq drivers available and there has to be some sort of code > in DT or platform code that reflects which driver we want to use. Presumably the code would look at the top-level DT node's compatible value (e.g. "nvidia,tegra20"). -- 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/