Power monitoring on LS1028ARDB

[noahw]

I'd like to monitor power draw of LS1028ARDB (Vdd). It looks like there are some INA222 current monitors on the device which can be queried via I2C to compute power draw. I'm looking at the information on this (https://docs.nxp.com/bundle/GUID-487B2E69-BB19-42CB-AC38-7EF18C0FE3AE/page/GUID-3B61CB66-10E4-4255-8...) page and Power Monitor User Manual" section of the LSDK user manual. 

I can't quite seem to figure out what I need to do to be able to get output from the INA222 devices. I installed the lm-sensors bash tool in my LSDK, but when I run `sensor` all I see are the two temperature devices. I can't seem to figure out whether the NXP-provided instruction are telling me to install additional I2C drivers, edit some config file somewhere, etc.

Is power monitoring supported on my device, and how can I read current and/or wattage output?

[June_Lu]

will support you in the 

https://community.nxp.com/t5/Layerscape/Building-kernel-and-deploying-to-device-for-LS1028ARDB-kerne...

[noahw · Accepted solution]

Please see https://community.nxp.com/t5/Layerscape/Building-kernel-and-deploying-to-device-for-LS1028ARDB-kerne...for the solution.

Thanks!

[June_Lu]

Please enable the following options in LSDK2108 Linux Kernel configuration file and rebuild Linux Kernel. It seems that these options are not enabled by default.

CONFIG_I2C_MPC=y

SENSORS_INA2XX=y

[noahw]

Is it SENSORS_INA2XX=y or CONFIG_SENSORS_INA2XX=y?

Also, where in the flex-builder file system do I find the kernel config to edit?

Also, where in the menuconfig GUI can I find these two config options?