No aw_thermal device on Orange Pi One

[Kyle Evans]

On Wed, Feb 21, 2018 at 3:54 PM, Greg V via freebsd-arm
<freebsd-arm at freebsd.org> wrote:
> On 02/22/2018 00:44, Juan Ambriz wrote:
>>
>> Hi.
>>
>> Just built and image for Orange Pi One using r329366 with crochet. Using
>> the board configuration for OrangePi-Plus2E the only change made was in
>> setup.sh file to use u-boot-orangepi-one.
>>
>> Looking at old messages on the list I see that "aw_thermal0: <Allwinner
>> Thermal Sensor Controller> mem 0x1c25000-0x1c253ff" is missing.
>
> Hi. This happened because we're using device trees from upstream (Linux)
> now, and they do not have entries for the thermal sensor.
>
> I made a little work-in-progress patch:
> https://gist.github.com/myfreeweb/a6cb7261fc79977f4c1c224cfe5ca3de
> That uses the configuration proposed for Linux:
> https://lkml.org/lkml/2018/1/28/406
> But it currently fails in aw_thermal_init.
>
> And anyway, reading the sensor correctly depends on reading thermal
> calibration data, which is currently in progress:
> https://reviews.freebsd.org/D13556

This support landed independently of that review, and I failed to
update it. Very few of the -sid devices have landed in upstream FDT,
so these will need to be added as overlays for the time being.