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Original question:

AM620-Q1: Understanding the low power modes

AM620-Q1: Partial I/O mode - Discussion

Kanishk S R
Prodigy 70 points

Part Number: AM620-Q1
Other Parts Discussed in Thread: SK-AM62-LP

Tool/software:

I tried implementing Partial I/O mode on the AM62x SoC, as described in your documentation. According to the guidelines, the device should be able to wake up from Partial I/O mode via activity on the CAN I/O pins (mcu_mcan0 or mcu_mcan1). I have followed the recommended steps to enable the wakeup source:

 

1. Configured the wakeup source using -  ethtool -s mcu_mcan0 wol p.

2.  Also, I have added k3-am62x-sk-lpm-wkup-sources.dtso overlay 

 

However, despite these configurations, the device does not wake up from Partial I/O mode.

Am I missing something? Could you please provide guidance on whether there are any additional steps or configurations required to successfully wake up the device using CAN I/O pins? 


**Also, I tried MCAN wakeup by following the steps above with Deep sleep mode and the device is restoring to the normal mode.**