[ntp:questions] More than one PPS source on Raspberry Pi?

Frank Wayne fwayne at frankwayne.com
Mon Dec 4 16:35:22 UTC 2017

Has anyone tried to use more than one PPS source at the same time on a Raspberry Pi? The device tree overlay pps-gpio does not seem to support more than one instance. That is, if my config.txt specifies two instances of pps-gpio for different GPIO pins, only /dev/pps0 is created.

The documentation for pps_gpio is limited or missing, and the Raspberry Pi forum and the LinuxPPS list have not helped.

If pps-gpio cannot do it, is there another way to get PPS devices for Raspbian or another OS that will run on a Pi?

Frank Wayne

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