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Date: Tue, 8 Sep 2015 23:46:35 +0800 From: dawei chien <dawei.chien@...iatek.com> To: Viresh Kumar <viresh.kumar@...aro.org> CC: Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>, "Mark Rutland" <mark.rutland@....com>, Ian Campbell <ijc+devicetree@...lion.org.uk>, Kumar Gala <galak@...eaurora.org>, "Catalin Marinas" <catalin.marinas@....com>, Will Deacon <will.deacon@....com>, "Rafael J. Wysocki" <rjw@...ysocki.net>, Matthias Brugger <matthias.bgg@...il.com>, Daniel Kurtz <djkurtz@...omium.org>, Sascha Hauer <s.hauer@...gutronix.de>, Eddie Huang <eddie.huang@...iatek.com>, "Daniel Lezcano" <daniel.lezcano@...aro.org>, Howard Chen <howard.chen@...aro.org>, Yingjoe Chen <yingjoe.chen@...iatek.com>, <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>, <srv_heupstream@...iatek.com>, Sascha Hauer <kernel@...gutronix.de> Subject: Re: thermal: mediatek: Add cpu power cooling model Hi Viresh, On Mon, 2015-09-07 at 11:39 +0530, Viresh Kumar wrote: > On 04-09-15, 17:01, Dawei Chien wrote: > > Use Intelligent Power Allocation (IPA) technical to add > > static/dynamic power model for binding CPU thermal zone. > > The power allocator governor allocates power budget to control > > CPU temperature. > > Sorry but this isn't enough really.. I don't have time to go through > the code and understand the purpose of the series. > > Please explain here in detail: > - Why this is needed. Power Allocator governor is able to keep SOC temperature within a defined temperature range to avoid SOC overheat and keep it's performance. mt8173-cpufreq.c need to register its' own power model with power allocator thermal governor, so that power allocator governor can allocates suitable power budget to control CPU temperature. > - What/How you are doing it. Measure and create dynamic/static power model, and register cooling device of_cpufreq_power_cooling_register for MT8173. > > (Don't resend, just reply to this email :) ) > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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