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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

  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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