linux-kernel - Re: [PATCH v1 17/33] thermal/drivers/rcar: Switch to new of API

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Date:   Sun, 24 Jul 2022 21:00:53 +0200
From:   Niklas Söderlund 
        <niklas.soderlund@...natech.se>
To:     Daniel Lezcano <daniel.lezcano@...exp.org>
Cc:     daniel.lezcano@...aro.org, rafael@...nel.org, rui.zhang@...el.com,
        khilman@...libre.com, abailon@...libre.com, amitk@...nel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        "open list:RENESAS R-CAR THERMAL DRIVERS" 
        <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH v1 17/33] thermal/drivers/rcar: Switch to new of API

Hi Daniel,

On 2022-07-24 20:27:54 +0200, Daniel Lezcano wrote:
> 
> Hi Niklas,
> 
> I tried to reproduce the issue but without success.
> 
> What sensor are you using ?

I was using rcar_gen3_thermal.

I did my tests starting on v5.19-rc7 and then picked '[PATCH v5 00/12] 
thermal OF rework' from [1] and finally applied this full series on-top 
of that. If you have a branch or some specific test you wish me to try 
I'm happy to so.

1. https://lore.kernel.org/lkml/20220710123512.1714714-1-daniel.lezcano@linexp.org/

> 
> 
> On 19/07/2022 11:10, Niklas Söderlund wrote:
> > Hi Daniel,
> > 
> > Thanks for your work.
> > 
> > On 2022-07-10 23:24:07 +0200, Daniel Lezcano wrote:
> > > The thermal OF code has a new API allowing to migrate the OF
> > > initialization to a simpler approach.
> > > 
> > > Use this new API.
> > I tested this together with the series it depends on and while
> > temperature monitoring seems to work fine it breaks the emul_temp
> > interface (/sys/class/thermal/thermal_zone2/emul_temp).
> > 
> > Before this change I can write a temperature to this file and have it
> > trigger actions, in my test-case changing the cooling state, which I
> > observe in /sys/class/thermal/cooling_device0/cur_state.
> > 
> > Likewise before this change I could trip the critical trip-point that
> > would power off the board using the emul_temp interface, this too no
> > longer works,
> > 
> >      echo 120000 > /sys/class/thermal/thermal_zone2/emul_temp
> > 
> > Is this an intention change of the new API?
> 
> 
> 
> 

-- 
Kind Regards,
Niklas Söderlund