From: Eduardo Valentin <edubezval@gmail.com>
To: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Leo Yan <leo.yan@linaro.org>,
rui.zhang@intel.com, jean.wangtao@linaro.org,
Keerthy <j-keerthy@ti.com>,
"open list:THERMAL" <linux-pm@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH V2] thermal/drivers/hisi: Switch to interrupt mode
Date: Mon, 4 Dec 2017 18:00:33 -0800 [thread overview]
Message-ID: <20171205020031.GA4949@localhost.localdomain> (raw)
In-Reply-To: <20170928073220.GF2196@mai>
Hello,
On Thu, Sep 28, 2017 at 09:32:20AM +0200, Daniel Lezcano wrote:
> On Thu, Sep 28, 2017 at 02:57:52PM +0800, Leo Yan wrote:
> > Hi Daniel,
> >
> > On Thu, Sep 28, 2017 at 07:13:44AM +0200, Daniel Lezcano wrote:
> > > At this moment, we have both the interrupt setup and the polling enabled. The
> > > interrupt does nothing more than forcing an update while the temperature is
> > > polled every second.
> > >
> > > We can do much better than that, threshold is set to 65C in the DT and the
> > > passive cooling device enters in the dance when 75C is reached. We need to
> > > sample the temperature at 65C in order to let the IPA gather enough values for
> > > the PID computation. If the SoC is running at a temperature below 65C, we will
> > > be constantly polling for nothing.
> > >
> > > This patch disables the sensor when the temperature is below 65C and enables it
> > > when passing the threshold. It results the thermal sensor driver will have no
> > > activity most of the time.
> > >
> > > Cc: Keerthy <j-keerthy@ti.com>
> > > Cc: Leo Yang <leo.yan@linaro.org>
> >
> > s/Yang/Yan :) Have tested this patch on Hikey at my side:
>
> Oops sorry :)
>
> > Reviewed-by: Leo Yan <leo.yan@linaro.org>
> > Tested-by: Leo Yan <leo.yan@linaro.org>
>
Is this still needed after the latest rework done?
>
> Great! Thanks for testing.
>
> -- Daniel
next prev parent reply other threads:[~2017-12-05 2:00 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-26 23:54 [PATCH] thermal/drivers/hisi: Switch to interrupt mode Daniel Lezcano
2017-09-27 8:26 ` Keerthy
2017-09-27 15:56 ` Daniel Lezcano
2017-09-28 5:13 ` [PATCH V2] " Daniel Lezcano
2017-09-28 6:57 ` Leo Yan
2017-09-28 7:32 ` Daniel Lezcano
2017-12-05 2:00 ` Eduardo Valentin [this message]
2017-12-05 6:49 ` Daniel Lezcano
2017-09-29 11:07 ` Valentin Schneider
2017-09-29 16:46 ` Daniel Lezcano
2017-09-29 17:26 ` Valentin Schneider
2017-10-02 20:02 ` Daniel Lezcano
2017-10-10 16:51 ` Daniel Lezcano
2017-10-10 17:01 ` Valentin Schneider
2017-10-10 17:13 ` Daniel Lezcano
2017-10-10 17:19 ` Valentin Schneider
2017-10-10 17:28 ` Daniel Lezcano
2017-10-11 1:54 ` Wangtao (Kevin, Kirin)
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