CONFIG_BF531 is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_BF531.
Result is shown for kernelversion 6.7-rc3
BF531
configname: CONFIG_BF531
CPU
└─>BF531
In linux kernel since version 2.6.24 (release Date: 2008-01-24)
BF531 Processor Support.