How to disable both L1 and L2 cache on AM335x

Hi Masa,

This is from the Kconfig files:

Disable I-Cache (I-bit) (CPU_ICACHE_DISABLE)

CONFIG_CPU_ICACHE_DISABLE:

Say Y here to disable the processor instruction cache. Unless
you have a reason not to or are unsure, say N.

Symbol: CPU_ICACHE_DISABLE [=n]
Type : boolean
Prompt: Disable I-Cache (I-bit)
Defined at arch/arm/mm/Kconfig:714
Depends on: CPU_CP15 [=y] && !CPU_ARM610 [=n] && !CPU_ARM710 [=n] && !CPU_ARM720T [=n] && !CPU_ARM740T [=n] && !CPU_XSCALE [=n] && !CPU_XSC3 [=n]
Location:
-> System Type

Disable D-Cache (C-bit) (CPU_DCACHE_DISABLE)

CONFIG_CPU_DCACHE_DISABLE:

Say Y here to disable the processor data cache. Unless
you have a reason not to or are unsure, say N.

Symbol: CPU_DCACHE_DISABLE [=n]
Type : boolean
Prompt: Disable D-Cache (C-bit)
Defined at arch/arm/mm/Kconfig:721
Depends on: CPU_CP15 [=y]
Location:
-> System Type

These are both L1 caches.

The L2 cache is by default 64K of RAM.

Best regards,
Miroslav

Thank you for your response.

I also check CA8 technical manual. I believe that the symbol of CPU_ICACHE_DISABLE and CPU_DCACHE_DISABLE controls 'I bit' and 'C bit'. According to the manual, L2 is also disabled when the both I and D cache is disabled. So under this configuration, L2 of Sitara is also disabled and work as SRAM. 

Could you please advise if my understanding is correct? If some kind of configuration setting is required to disable L2, I would like to know it.

Best regards,

masa