SPRACL7 March 2019 AM5746 , AM5748 , AM5749
Reported temperature data is measured by on-die sensors to the approximate actual junction temperature. Temperature for each use-case is measured after soaking for five minutes. Under lab conditions, it is determined a five minute period allows the processor to reach stable temperature.
The TI Processor SDK provides Linux drivers for these sensors, and can be queried from the command-line. For example:
# cat /sys/class/thermal/thermal_zone0/temp
71800