Hello!


Lukasz Majewski wrote:

quoted

The point is that I'm still working with a rather old version of the
cpufreq series, a version which still had the Exynos4x12 code in it
(this was removed later, if I remember correctly because of problems
with how to properly describe boost configuration in DT).

Is your board Odroid-U3/Trats2 ?

It's an Odroid-X2, so pretty similar to the U3, except that it doesn't
have any active cooling device.

quoted

Anyway, to not get completly off-topic here, I noticed some small
issue with v3 of the thermal series. I've enabled
CONFIG_THERMAL_HWMON so that I can use lm_sensors to query
temperature of the board. However while the thermal_zone is created,
there is no hwmon node to be found. 

I'm not surprised, that some use cases (about which I wasn't even
aware) show up. 
I've already fixed issues reported by Abhilash (with v5 and a following
patch) and look closer into the THERMAL_HWMON.

The problem seems to be that of_parse_thermal_zones always sets
'no_hwmon' to true, so that thermal_zone_device_register never registers
a hwmon device when the underlaying thermal zone is setup through DT. I
don't understand the rationale behind this, even with the comment ('No
hwmon because there might be hwmon drivers registering').

I've also done some work regarding FAN controlled by hwmon for Odroid
U3.
Could you look on following series:
http://www.spinics.net/lists/linux-samsung-soc/msg40471.html

I can only guess that your board might need similar entries for your
DTS file(s).

Like I said, the X2 only has a passive heatsink, so no fan controlling here.


With best wishes,
Tobias