USB-SS Alart timer


I am using the mangoH green, and set the device into USB-SS mode

I noticed via power measurements that every 30 seconds the unit wakes up to 1.6 seconds.

I am noticing that wakeup reason is the RTC wakeup.

since I have not configured that, I would like to know which process is configuring that, and how can I disable that.
I expect that in such “suspend to RAM” feature the system will be kept on USb-SS and will not perform periodic wakeups