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RTC only mode !!!!

Other Parts Discussed in Thread: AM3354, SN74AVC1T45

Hi folks 

We built a custom board based on am3354 .

We are trying to put the board on RTC only mode using   MAIN_ON_OFF_SW (GPIO) (see the attached photo).

*  For clarification

- wakeup is connected to am3354  "EXT_WAKEUP" pin

- MAIN_ON_OFF_SW is connected to am3354 "GPIO2_21" pin

When the switch is not installed and by shorting pin 1 with VRTC 1v8 (using tweezers) The boards enters the mode fine.

But if we installed the switch back, and by pressing it (which is equal to connecting pin 1 with VRTC 1v8)  the board start the RTC only mode and hangs at very high current giving the following message on the debug terminal  “sched: RT throttling activated”

 

Any idea is appreciated

 

Regards