i.MX 6ULL voltage supplies

[rprronad]

Dear Experts,

The i.MX 6ULL processors have several power supply domains (voltage supply rails) and multiple internal power domains. Is there any way to check the voltage supply rails through a Linux command if these values are stored in registers or elsewhere?

Please provide me with information on whether it is possible to see the voltage rails via a Linux command.

Thanks & Regards

Ravikumar 

[rprronad]

Thank you for your response and inputs.

Is there a method to capture the power monitoring for the i.MX6ULL?

Or, how can I implement a method to monitor the power rails? Any guidance on this would be greatly appreciated.


Thanks & Regards, 

Ravikumar

[JorgeCas]

Hello,

As is mentioned by roke, you can check the configured value in:

/sys/class/regulator/* ; do cat $i/name; cat $i/microvolts; echo; done

This is how is done in hardware on i.MX93EVK board.

Best regards.

[roke]

linux-imx/Documentation/ABI/testing/sysfs-class-regulator at lf-5.15.71-2.2.0 · nxp-imx/linux-imx · ...

kernel.org/doc/Documentation/ABI/testing/sysfs-class-regulator

If you add the regulators correctly, you will find in /sys/class/regulator. 

Again. the premise is to add the regulator correctly.

[JorgeCas]

Hello,

This should be done by hardware, adding power monitors for each power rail in the processor. We have similar solutions in other boards such as i.MX8MPEVK, i.MX8ULP, i.MX93EVK, etc. And the monitoring is done through our BCU tool.

Unfortunately, i.MX6ULL is not supported on this tool and the data sent from power monitor should be captured an interpreted in your side.

Best regards.