Issue 828: add PPS driver for GTA04A5 GPS module

Reported by Nikolaus Schaller, Jul 21, 2017

see https://www.kernel.org/doc/Documentation/pps/pps.txt
and 
http://elixir.free-electrons.com/linux/v4.13-rc1/source/Documentation
/devicetree/bindings/pps/pps-gpio.txt

So we mainly need to add pinmux and

	pps {
		compatible = "pps-gpio";
		gpios = <&gpio2 18 0>; /* GPIN114 */

		// assert-falling-edge;
	};

to omap3-gta04a5.dts

Note: PPS is only available if some client has opened /dev/ttyGPS0

Comment 1 by Nikolaus Schaller, Jul 21, 2017

Sidenote: we should add the package "pps-tools" to the 
Letux.deb useful tools.

Comment 2 by Nikolaus Schaller, Aug 29, 2017

has now been documented:

http://projects.goldelico.com/p/gta04-kernel/page/PPS/

and pps-tools have been added to Letux.deb

Status: Fixed
Owner: hns

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Letux Kernel