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GICT : Software error occured in different cluster

Namu

Hello,
I want to know the behavior of GICT in different clusters.
The system has 10 cores with GIC600. 

 Cluster 0: 8 cores 
 Cluster 1: 2 cores

scenario: While accessing the redistributor registe of cluster 1, GICT throws a software error 
GICT_ERRSTATUS.IERR : 0x1, SYN_PPI_PWRDWN
GICT_ERRMISC0.Data : 0x08

I am trying to access Waker register of all the core. There is no error for cluster 0 even though the redistributor and cpu link is offline. But in cluster 1, when link offline then GICT throws error.

scenario: Regarding the scrub operation, the system tries to set GICR_FCTLR.sip = 0x1 in the register of cluster 1.
           Here GICT throws error SYN_PPI_PWRDWN.


Question 1: Is there any different behavior of GICT in a cluster-based system architecture?
Question 2: Is there any additional setting required in GICT for a cluster-based system?
Question 3: Is scrubbing done when the redistributor is in power in the state?

Thank you in advance.