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Subject: Re: [PATCH v5 3/5] thermal: devfreq_cooling: Use PM QoS to set
 frequency limits
To:     Lukasz Luba <lukasz.luba@arm.com>, linux-kernel@vger.kernel.org,
        linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org,
        linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org,
        linux-imx@nxp.com
Cc:     Morten.Rasmussen@arm.com, Dietmar.Eggemann@arm.com,
        javi.merino@arm.com, cw00.choi@samsung.com,
        b.zolnierkie@samsung.com, rjw@rjwysocki.net, sudeep.holla@arm.com,
        viresh.kumar@linaro.org, nm@ti.com, sboyd@kernel.org,
        rui.zhang@intel.com, amit.kucheria@verdurent.com, mingo@redhat.com,
        peterz@infradead.org, juri.lelli@redhat.com,
        vincent.guittot@linaro.org, rostedt@goodmis.org,
        qperret@google.com, bsegall@google.com, mgorman@suse.de,
        shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com,
        kernel@pengutronix.de, khilman@kernel.org, agross@kernel.org,
        bjorn.andersson@linaro.org, robh@kernel.org,
        matthias.bgg@gmail.com, steven.price@arm.com,
        tomeu.vizoso@collabora.com, alyssa.rosenzweig@collabora.com,
        airlied@linux.ie, daniel@ffwll.ch, liviu.dudau@arm.com,
        lorenzo.pieralisi@arm.com, patrick.bellasi@matbug.net,
        orjan.eide@arm.com, rdunlap@infradead.org, mka@chromium.org
References: <20200318114548.19916-1-lukasz.luba@arm.com>
 <20200318114548.19916-4-lukasz.luba@arm.com>
From:   Daniel Lezcano <daniel.lezcano@linaro.org>
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Message-ID: <d73ce772-8d0a-e5f4-097a-d89e01ff7578@linaro.org>
Date:   Fri, 3 Apr 2020 18:43:20 +0200
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On 18/03/2020 12:45, Lukasz Luba wrote:
> From: Matthias Kaehlcke <mka@chromium.org>
> 
> Now that devfreq supports limiting the frequency range of a device
> through PM QoS make use of it instead of disabling OPPs that should
> not be used.
> 
> The switch from disabling OPPs to PM QoS introduces a subtle behavioral
> change in case of conflicting requests (min > max): PM QoS gives
> precedence to the MIN_FREQUENCY request, while higher OPPs disabled
> with dev_pm_opp_disable() would override MIN_FREQUENCY.
> 
> Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>

This patch is standalone, right? If yes, I will apply it.


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