PinePhone Thermal Tweaks
This page explains how to read the thermal sensor data and how to get and overwrite the default settings.
The thermal management is handled by the Thermal Sysfs driver under GNU/Linux. Depending on the used OS by the user, the default settings might differ from the showcased examples. In case of higher values it can be advised to lower the settings to prevent the phone components from being damaged by excessive heat.
The current CPU temperature can be displayed by typing:
To retrieve the thermal zone types and trip points type:
grep . /sys/class/thermal/thermal_zone0/trip_point_*_temp grep . /sys/class/thermal/thermal_zone0/trip_point_*_type
The values of the trip point temperatures can be lowered individually (make sure the trip points have the correct number for their corresponding trip type, don't swap the values for "critical" and "passive", danger!), example values:
|Warning:||Setting wrong values in the Thermal Sysfs driver poses a risk, the instructions are directed towards expert-level users and developers!|
echo 65000 > /sys/class/thermal/thermal_zone0/trip_point_0_temp echo 80000 > /sys/class/thermal/thermal_zone0/trip_point_1_temp echo 90000 > /sys/class/thermal/thermal_zone0/trip_point_2_temp
For details see the kernel documentation, https://www.kernel.org/doc/Documentation/thermal/sysfs-api.txt.