CONFIG_ARCH_BCMBCA_BRAHMAB15 is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_BCMBCA_BRAHMAB15.
Result is shown for kernelversion 6.0-rc7

Brahma-B15 SoCs


Linux Kernel Configuration
└─> Broadcom SoC Support
└─> Broadcom Broadband Carrier Access (BCA) origin SoC
└─> Brahma-B15 SoCs

Say Y if you intend to run the kernel on a Broadcom Broadband ARM B15
based BCA chipset.

This enables support for Broadcom BCA ARM B15 broadband chipset. Currently
only DSL chip BCM63148.