sysfs-class-gnss

 1What:		/sys/class/gnss/gnss<N>/type
 2Date:		May 2018
 3KernelVersion:	4.18
 4Contact:	Johan Hovold <johan@kernel.org>
 5Description:
 6		The GNSS receiver type. The currently identified types reflect
 7		the protocol(s) supported by the receiver:
 8
 9			======		===========
10			"NMEA"		NMEA 0183
11			"SiRF"		SiRF Binary
12			"UBX"		UBX
13			======		===========
14
15		Note that also non-"NMEA" type receivers typically support a
16		subset of NMEA 0183 with vendor extensions (e.g. to allow
17		switching to a vendor protocol).