From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthias Kaehlcke Subject: Re: [PATCH v5 09/12] dt-bindings: misc: add bindings for throttler Date: Wed, 1 Aug 2018 10:39:46 -0700 Message-ID: <20180801173946.GL68975@google.com> References: <20180703234705.227473-1-mka@chromium.org> <20180703234705.227473-10-mka@chromium.org> <5B616F0D.1050901@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Return-path: Content-Disposition: inline In-Reply-To: <5B616F0D.1050901@samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: Chanwoo Choi Cc: MyungJoo Ham , Kyungmin Park , Arnd Bergmann , Greg Kroah-Hartman , Rob Herring , Mark Rutland , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Brian Norris , Douglas Anderson , Enric Balletbo i Serra , "Rafael J . Wysocki" , Viresh Kumar , Lee Jones , Benson Leung , Olof Johansson List-Id: devicetree@vger.kernel.org Hi Chanwoo, On Wed, Aug 01, 2018 at 05:27:57PM +0900, Chanwoo Choi wrote: > Hi Matthias, > > On 2018년 07월 04일 08:47, Matthias Kaehlcke wrote: > > The Throttler is used for non-thermal throttling of system components > > like CPUs or devfreq devices. > > > > Signed-off-by: Matthias Kaehlcke > > If possible, I hope the more detailed example for "cpu0_opp03, &cpu1_opp02, &gpu_opp03" > because I'm confusing the meaning of 'cpu0_opp03' phandle. I omitted the OPP definitions to avoid cluttering the example. I'm happy to add them if DT folks also think it would add value. > cpu0_opp03 indicates the only one specific OPP entry among set of > OPP entries of CPU0 cpufreq? or cpu0_opp03 indicates the set of OPP > entries for CPU0 cpufreq ? cpu0_opp03 and the other phandles are specific OPP entries, that indicate the throttler which frequencies/OPPs should be used for throttling. For devices/CPUs with multiple levels of throttling multiple entries from its OPP set are listed. In the example a single level of throttling is used for all devices/CPUs.