CONFIG_BFIN_DCACHE_BANKA is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_BFIN_DCACHE_BANKA.
Result is shown for kernelversion 6.7-rc3

Enable only 16k BankA DCACHE - BankB is SRAM

configname: CONFIG_BFIN_DCACHE_BANKA

Linux Kernel Configuration
└─>Blackfin Processor Options
└─>Enable only 16k BankA DCACHE - BankB is SRAM
In linux kernel since version 2.6.24 (release Date: 2008-01-24)