Kernel-4.18.0-80.el8_ieee80211

Common IEEE 802.11 properties

This provides documentation of common properties that are valid for all wireless
devices.

Optional properties:

• ieee80211-freq-limit : list of supported frequency ranges in KHz. This can be
  used for devices that in a given config support less channels than
  normally. It may happen chipset supports a wide wireless band but it is
  limited to some part of it due to used antennas or power amplifier.
  An example case for this can be tri-band wireless router with two
  identical chipsets used for two different 5 GHz subbands. Using them
  incorrectly could not work or decrease performance noticeably.

Example:

pcie@0,0 {
reg = <0x0000 0 0 0 0>;
wifi@0,0 {
reg = <0x0000 0 0 0 0>;
ieee80211-freq-limit = <2402000 2482000>,
<5170000 5250000>;
};
};