I’m puzzled by the list of features, it says “ARM Cortex-M3”. I can’t find an M3 in the spec for AM3358, OSD3558 or in the Pocket Beagle design, so where exactly is it? Was this a typo?
It's used for power-management.. It's already utilized in the
v4.4.x-ti/v4.9.x-t kernel's (and mainline)