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.
Signed-off-by: Gary E. Miller <g...@rellim.com>
Fixes: c5dbcf8b70b5 ("pps-gpio: add device-tree binding and support")
Cc: Ricardo Martins <r...@fe.up.pt>
Cc: James Nuss <jamesn...@nanometrics.ca>
Cc: Jan Luebbe <j...@pengutronix.de>
Acked-by: Rodolfo Giometti <giome...@linux.it>
> ---`
---
Documentation/devicetree/bindings/pps/pps-gpio.txt | 2 ++
drivers/pps/clients/pps-gpio.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/pps/pps-gpio.txt
b/Documentation/devicetree/bindings/pps/pps-gpio.txt
index 40bf9c3..98f8898 100644
--- a/Documentation/devicetree/bindings/pps/pps-gpio.txt
+++ b/Documentation/devicetree/bindings/pps/pps-gpio.txt
@@ -10,6 +10,7 @@ Required properties:
Optional properties:
- assert-falling-edge: when present, assert is indicated by a falling edge
(instead of by a rising edge)
+- capture-clear: when present, also capture the clear edge
Example:
pps {
@@ -17,4 +18,5 @@ Example:
gpios = <&gpio2 6 0>;
assert-falling-edge;
+ capture-clear;
};
diff --git a/drivers/pps/clients/pps-gpio.c b/drivers/pps/clients/pps-gpio.c
index 333ad7d..dc4a71c 100644
--- a/drivers/pps/clients/pps-gpio.c
+++ b/drivers/pps/clients/pps-gpio.c
@@ -119,6 +119,8 @@ static int pps_gpio_probe(struct platform_device *pdev)
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 */
--
2.3.5
--
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