linux/Documentation/ABI/testing/sysfs-class-gnss

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What: /sys/class/gnss/gnssN/type
Date: May 2018
KernelVersion: 4.18
Contact: Johan Hovold <johan@kernel.org>
Description:
The GNSS receiver type. The currently identified types reflect
the protocol(s) supported by the receiver:
"NMEA" NMEA 0183
"SiRF" SiRF Binary
"UBX" UBX
Note that also non-"NMEA" type receivers typically support a
subset of NMEA 0183 with vendor extensions (e.g. to allow
switching to a vendor protocol).