linux-kernel - Re: [PATCH v3 0/6] Add support of New Amlogic temperature sensor for G12 SoCs

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Date:   Fri, 09 Aug 2019 17:11:37 -0700
From:   Kevin Hilman <khilman@...libre.com>
To:     Guillaume La Roque <glaroque@...libre.com>,
        daniel.lezcano@...aro.org
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 0/6] Add support of New Amlogic temperature sensor for G12 SoCs

Guillaume La Roque <glaroque@...libre.com> writes:

> This patchs series add support of New Amlogic temperature sensor and minimal
> thermal zone for SEI510 and ODROID-N2 boards.
>
> First implementation was doing on IIO[1] but after comments i move on thermal framework.
> Formulas and calibration values come from amlogic.
>
> Changes since v2:
>   - fix yaml documention 
>   - remove unneeded status variable for temperature-sensor node
>   - rework driver after Martin review
>   - add some information in commit message
>
> Changes since v1:
>   - fix enum vs const in documentation
>   - fix error with thermal-sensor-cells value set to 1 instead of 0
>   - add some dependencies needed to add cooling-maps
>
> Dependencies :
> - patch 3,4 & 5: depends on Neil's patch and series :
>               - missing dwc2 phy-names[2]
>               - patchsets to add DVFS on G12a[3] which have deps on [4] and [5]
>
> [1] https://lore.kernel.org/linux-amlogic/20190604144714.2009-1-glaroque@baylibre.com/
> [2] https://lore.kernel.org/linux-amlogic/20190625123647.26117-1-narmstrong@baylibre.com/
> [3] https://lore.kernel.org/linux-amlogic/20190729132622.7566-1-narmstrong@baylibre.com/
> [4] https://lore.kernel.org/linux-amlogic/20190731084019.8451-5-narmstrong@baylibre.com/
> [5] https://lore.kernel.org/linux-amlogic/20190729132622.7566-3-narmstrong@baylibre.com/

Thank you for the detailed list of dependencies!  Much appreciated.

With all the deps, I tested this on sei510 and odroid-n2, and basic
functionality seems to work.

As discussed off-list: it would be nice to have an example of how
cpufreq could be used as a cooling device for hot temperatures.  The
vendor kernel has some trip points that could be included as examples,
or even included as extra patches.

Also the driver patch is missing the two main thermal maintainers, so
please resend at least the driver and bindings including them.


Kevin