linux-kernel - Re: [PATCH V2] thermal/drivers/hisi: Switch to interrupt mode

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Date:   Thu, 28 Sep 2017 09:32:20 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Leo Yan <leo.yan@...aro.org>
Cc:     rui.zhang@...el.com, edubezval@...il.com, jean.wangtao@...aro.org,
        Keerthy <j-keerthy@...com>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2] thermal/drivers/hisi: Switch to interrupt mode

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@...com>
> > Cc: Leo Yang <leo.yan@...aro.org>
> 
> s/Yang/Yan :) Have tested this patch on Hikey at my side:

Oops sorry :)

> Reviewed-by: Leo Yan <leo.yan@...aro.org>
> Tested-by: Leo Yan <leo.yan@...aro.org>


Great! Thanks for testing.

  -- Daniel