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Disable Cache L1 et L2 Armv8

Hi

I work with the ARMV8 architecture, I want to disactivate L1 cache ,

to disable the L1 cache I found in the user manual
"" The SCTLR.I bit enables or disables the L1 instruction cache. ""

my question here is: I did not find in the manual how to disable the L1 data cache, so how I can disable the L1 data cache?