I suggest you find out how the GIC has been integrated on thisThanks for the suggestion, This is a bug in the firmware which is restricting access to this register. We have been working around this bug for more than 2 years due to this. Now this platform support is in mainline and We/I have no hope that this will be fixed in near future atleast for this platform.
platform. If you take a fault on accessing this register, this very
much looks like an integration bug, and it should be quirked as such.