Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754472AbaGQHls (ORCPT ); Thu, 17 Jul 2014 03:41:48 -0400 Received: from mail-oi0-f45.google.com ([209.85.218.45]:38534 "EHLO mail-oi0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753866AbaGQHlq (ORCPT ); Thu, 17 Jul 2014 03:41:46 -0400 MIME-Version: 1.0 In-Reply-To: <20140717093518.486ac244@free-electrons.com> References: <1450785.beFNo3ByBF@vostro.rjw.lan> <20140717093518.486ac244@free-electrons.com> Date: Thu, 17 Jul 2014 13:11:45 +0530 Message-ID: Subject: Re: [PATCH 00/14] cpufreq: cpu0: Extend support beyond CPU0, V2 From: Viresh Kumar To: Thomas Petazzoni Cc: Nishanth Menon , "devicetree@vger.kernel.org" , Lists linaro-kernel , Simon Horman , "linux-pm@vger.kernel.org" , Stephen Boyd , Tomasz Figa , "Rafael J. Wysocki" , Linux Kernel Mailing List , Thomas P Abraham , Rob Herring , "linux-arm-msm@vger.kernel.org" , Kukjin Kim , Arvind Chauhan , Sachin Kamat , Michal Simek Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 17 July 2014 13:05, Thomas Petazzoni wrote: > Could you summarize what is the issue with the binding? > > At least for the case where we have one clock per CPU, the DT binding > is really dead simple: each CPU node can carry a "clocks" property, and > a "clock-latency" property. I really don't see why a long discussion is > needed to agree on such a binding. > > Now, if the DT binding problem is related to those cases where you have > siblings, i.e one clock controlling *some* of the CPUs, but not all > CPUs or just one CPU, then maybe we could leave this aside for now, Yeah, we are stuck on that for now. > only support the following cases: > > * One clock for all CPUs > * One clock for each CPU Yeah, so I also proposed this yesterday that we stick to only these two implementations for now. And was looking at how would the cpufreq-generic driver come to know about this. So, one way out now is to see if "clocks" property is defined in multiple cpu nodes, if yes don't compare them and consider separate clocks for each cpu. We don't have to try matching that to any other node, as that's a very bad idea. Mike was already very upset with that :) @Stephen/Rafael: Does that sound any better? Ofcourse the final thing is to get bindings to figure out relations between CPUs.. -- 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/