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

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Date:   Sun, 24 Jul 2022 23:11:47 +0200
From:   Daniel Lezcano <daniel.lezcano@...exp.org>
To:     Niklas Söderlund <niklas.soderlund@...natech.se>
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 Niklas,

I give another try but failed to reproduce the issue. Perhaps my board 
has a path different from yours.

Thanks for proposing to test the series. I've uploaded the branch here:

https://github.com/dlezcano/linux-thermal


On 24/07/2022 21:00, Niklas Söderlund wrote:
> 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?
>>
>>
>>