About nRF54L15 UART30 unable to enter low power consumption

[kenlove]

Hi,

I tested uart30 of NCS3.1.1, and found that I could not enter the low power consumption mode.But there is nothing wrong with uart20.

Related code usage:   

prj.conf     CONFIG_PM_DEVICE=y    

       err = pm_device_action_run(uart_dev, PM_DEVICE_ACTION_SUSPEND);

        if (err) {
            LOG_ERR("Failed to suspend UART: %d", err);
        }

Using the same code, enter the low power consumption mode, uart20 is 3uA, and uart 30 exceeds 100ua.

After canceling the log printing, the power consumption returns to normal. Is this a software defect of uart30?

Annotation print function, the power consumption returns to normal. 

I guess printing will block uart30 from entering low power consumption mode.

If so, how to change it?

[AHaug]

Hi,

Could you send a minimal sample that I can use for reproduction on the nrf54l15?

Kind regards,
Andreas

[kenlove]

Hi,

Thank you for your reply.

Sorry, I retested it, but I couldn't reproduce it on ncs3.1.1 and ncs3.02.

Maybe it's because the Power Profiler has been updated.

If I can reproduce it, I will resend the minimal sample.

Regards,
Kenlove

[AHaug]

Noted,

Thank you for updating me. Feel free to update me if you can re-reproduce it with a minimal sample and I'll look into it again

Kind regards,
Andreas