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This register provides a fail-safe override for some CCI-550 functions. Use this register to resolve problems that you cannot work around in another way.
Table 3-2 ctrl_ovr register bit assignments
Enable both snoop data layers for data transfer between ACE masters.
This bit applies when a second CD channel is available, that is, when the CCI-550 is configured with a dual-layer snoop data network.
NoteA value of 1 for this bit does not guarantee that a second CD channel is configured. Setting this bit where the CCI-550 is configured with a single-layer snoop data network has no effect.
If you set this bit to 1, the CCI-550 does not support the Continuous_Cache_Line_Read_Data ACE property. Some ACE masters rely on this property and setting this bit to 1 might cause system deadlock. However, the following ARM processors are known to work with this bit set to 1:
Disable regional clock gating:
Disable the snoop filter:
DVM message disable: