Note, for AX/WiFi6 devices, such as, listed: cAPGi-5HaxD2HaxD newer "WiFi" iteration of CAPsMAN controller is required, slightly different configuration, then the legacy WiFi4/5 driver set.

Additionally, controller role, for the CRS354-48P-4S+2Q+RM, is not the most suitable.

Device is being CRS series, and may struggle to manage CAPsMAN, as it's main purpose is to perform hardware offloaded frame switching.

As the specification sheet suggests