default or selected kernelversion does not have config value CONFIG_ASIX_PHY.
Result is shown for kernelversion 5.4.91

Asix PHYs

modulename: asix.ko
configname: CONFIG_ASIX_PHY

Linux Kernel Configuration
└─> Device Drivers
└─> Network device support
└─> PHY Device support and infrastructure
└─> Asix PHYs

Currently supports the Asix Electronics PHY found in the X-Surf 100
AX88796B package.

source code: