xref: /freebsd/sys/contrib/device-tree/Bindings/net/wireless/ieee80211.txt (revision 911f0260390e18cf85f3dbf2c719b593efdc1e3c)
1Common IEEE 802.11 properties
2
3This provides documentation of common properties that are valid for all wireless
4devices.
5
6Optional properties:
7 - ieee80211-freq-limit : list of supported frequency ranges in KHz. This can be
8	used for devices that in a given config support less channels than
9	normally. It may happen chipset supports a wide wireless band but it is
10	limited to some part of it due to used antennas or power amplifier.
11	An example case for this can be tri-band wireless router with two
12	identical chipsets used for two different 5 GHz subbands. Using them
13	incorrectly could not work or decrease performance noticeably.
14
15Example:
16
17pcie@0,0 {
18	reg = <0x0000 0 0 0 0>;
19	wifi@0,0 {
20		reg = <0x0000 0 0 0 0>;
21		ieee80211-freq-limit = <2402000 2482000>,
22				       <5170000 5250000>;
23	};
24};
25