Thermal Zone
Thermal management is necessary to ensure proper operation of the phyCORE-AM62x SOM, especially when integrated inside an enclosure. The AM62x processor generates considerable heat, so it is important to manage the system’s temperature. The phyCORE-AM62x has a temperature rating of -40°C to 85°C. This guide will show you how to read the junction temperature of the processor on the phyCORE-AM62x SOM. To learn more information about the phyCORE-AM62x thermal management, please see section 4.9 in the Hardware Manual.
Reading the Temperature
The phyCORE-AM62x processor has 1 physical location (thermal zone) where the temperature can be monitored. The available zone can be accessed in the Linux directory /sys/class/thermal/thermal_zone0.
To output the temperature of thermal zone 0 run the following command:
cat /sys/class/thermal/thermal_zone0/temp
53470
This output translates to 53.47C
Temperature Trip Points
To view the type of trip points and the trip point temperatures of thermal zone 0 run the following command:
cat /sys/class/thermal/thermal_zone0/trip_point*
2000
105000
critical
The critical trip point which will cause the system to shutdown will be reached when the temperature reaches 105C and will turn off when the temperature reaches 103C.