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#
# Author: Gary Miller
# https://groups.google.com/forum/#!topic/linux.kernel/fj1NGMrfGW8
#
# In the conversion from platform to device tree the capture-clear
# option was lost.
#
# capture-clear is needed so that time_pps_fetch() will report both
# edges of each PPS pulse. Both edges are needed so that userland
# programs, like gpsd, can autodetect the leading and trailing PPS
# edges.
#
====================================================================
diff -uprN old/Documentation/devicetree/bindings/pps/pps-gpio.txt new/Documentation/devicetree/bindings/pps/pps-gpio.txt
--- old/Documentation/devicetree/bindings/pps/pps-gpio.txt 2016-09-16 18:22:31.149632690 -0500
+++ new/Documentation/devicetree/bindings/pps/pps-gpio.txt 2016-09-16 18:27:02.981632115 -0500
@@ -17,4 +17,5 @@ Example:
gpios = <&gpio2 6 0>;
assert-falling-edge;
+ capture-clear;
};
diff -uprN old/drivers/pps/clients/pps-gpio.c new/drivers/pps/clients/pps-gpio.c
--- old/drivers/pps/clients/pps-gpio.c 2016-09-16 18:23:45.661632532 -0500
+++ new/drivers/pps/clients/pps-gpio.c 2016-09-16 18:29:20.257631825 -0500
@@ -119,6 +119,8 @@ static int pps_gpio_probe(struct platfor
if (of_get_property(np, "assert-falling-edge", NULL))
data->assert_falling_edge = true;
+ if (of_get_property(np, "capture-clear", NULL))
+ data->capture_clear = true;
}
/* GPIO setup */
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