BBB Core Temperature

Dear BBB users,

i cant find a way to query the cpu core temperature on a BBB. From other boards and PCs there is often a sysfs entry
like “/sys/devices/virtual/thermal/thermal_zone0/temp”

On new BBB images i cant find such a entry. I tried the latest

I just found this


Could someone enlighten me?

On an image from 2014 it is located on “/sys/devices/ocp.3/44e10448.bandgap/temp1_input”. Its kernel 3.8.13-bone50 and the dogtag is: “ BeagleBone Debian Image 2014-05-14”

Maybe i can investigate the dts and find whats the driver.

I think i found the answer… It seem disabled by Intention because it measures Just in 10 degree steps and is very inaccurate.


TI's hardware team decided to not mainline that subsystem as it was

it was only ever in the 3.8.x branch, consider the driver broken.