PMUFW enables AIBs only when RPU is powered down.
For other islands, the corresponding AIBs are not enabled, which might cause issues when a master tries to access the powered down blocks.
As a result, when an access is made to a powered down block, hangs or unexpected behavior might be observed.
Software running on a master in the system should ensure that no transactions are triggered for powered down blocks.
This issue is planned to be addressed in the 2017.2 release.