Full (both-way) coherent masters can snoop each other's caches. For fine-grain data sharing between the APU and PL, a system can have cache implemented in the PL. The APU can snoop PL caches, and the PL can snoop APU caches.
Full (both-way) coherent masters can snoop each other's caches. For fine-grain data sharing between the APU and PL, a system can have cache implemented in the PL. The APU can snoop PL caches, and the PL can snoop APU caches.