From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Horman Subject: Re: [1/2] cpufreq: dt-platdev: Automatically create cpufreq device with OPP v2 Date: Mon, 21 Aug 2017 15:17:59 +0200 Message-ID: <20170821131759.GA15330@verge.net.au> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from kirsty.vergenet.net ([202.4.237.240]:46383 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753178AbdHUNSD (ORCPT ); Mon, 21 Aug 2017 09:18:03 -0400 Content-Disposition: inline In-Reply-To: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Viresh Kumar Cc: Rafael Wysocki , linux-pm@vger.kernel.org, Vincent Guittot , geert@linux-m68k.org, maxime.ripard@free-electrons.com, wens@csie.org, xuwei5@hisilicon.com, kgene@kernel.org, krzk@kernel.org, yamada.masahiro@socionext.com, jun.nie@linaro.org, baoyou.xie@linaro.org, linux-kernel@vger.kernel.org On Wed, Aug 16, 2017 at 11:07:27AM +0530, Viresh Kumar wrote: > The initial idea of creating the cpufreq-dt-platdev.c file was to keep a > list of platforms that use the "operating-points" (V1) bindings and > create cpufreq device for them only, as we weren't sure which platforms > would want the device to get created automatically as some had their own > cpufreq drivers as well, or wanted to initialize cpufreq after doing > some stuff from platform code. > > But that wasn't the case with platforms using "operating-points-v2" > property. We wanted the device to get created automatically without the > need of adding them to the whitelist. Though, we will still have some > exceptions where we don't want to create the device automatically. > > Rename the earlier platform list as *whitelist* and create a new > *blacklist* as well. > > The cpufreq-dt device will get created if: > - The platform is there in the whitelist OR > - The platform has "operating-points-v2" property in CPU0's DT node and > isn't part of the blacklist . > > Reported-by: Geert Uytterhoeven > Signed-off-by: Viresh Kumar I have exercised this on the r8a7795 and r8a7795 with the following reverted: * 034def597bb7 ("cpufreq: rcar: Add support for R8A7795 SoC") * bea2ebca6b91 ("cpufreq: dt: Add r8a7796 support to to use generic cpufreq driver") Tested-by: Simon Horman