The patch titled
Subject: dt-bindings: pps: pps-gpio PPS ECHO implementation
has been added to the -mm tree. Its filename is
resend-dt-bindings-pps-pps-gpio-pps-echo-implementation.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/resend-dt-bindings-pps-pps-gpio-pps-echo-implementation.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/resend-dt-bindings-pps-pps-gpio-pps-echo-implementation.patch
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------------------------------------------------------
From: Tom Burkart <tom@xxxxxxxxxx>
Subject: dt-bindings: pps: pps-gpio PPS ECHO implementation
Implement the device tree binding changes required for the pps echo
functionality for pps-gpio, that sysfs claims is available already.
This patch is provided separated from the rest of the patch per
Documentation/devicetree/bindings/submitting-patches.txt.
This patch was originally written by Lukas Senger as part of a masters
thesis project and modified for inclusion into the linux kernel by Tom
Burkart.
Link: http://lkml.kernel.org/r/20190311075429.3677-3-tom@xxxxxxxxxx
Signed-off-by: Lukas Senger <lukas@xxxxxxxxxxxx>
Signed-off-by: Tom Burkart <tom@xxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Acked-by: Rodolfo Giometti <giometti@xxxxxxxxxxxx>
Cc: Philipp Zabel <philipp.zabel@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/Documentation/devicetree/bindings/pps/pps-gpio.txt~resend-dt-bindings-pps-pps-gpio-pps-echo-implementation
+++ a/Documentation/devicetree/bindings/pps/pps-gpio.txt
@@ -7,6 +7,10 @@ Required properties:
- compatible: should be "pps-gpio"
- gpios: one PPS GPIO in the format described by ../gpio/gpio.txt
+Additional required properties for the PPS ECHO functionality:
+- echo-gpios: one PPS ECHO GPIO in the format described by ../gpio/gpio.txt
+- echo-active-ms: duration in ms of the active portion of the echo pulse
+
Optional properties:
- assert-falling-edge: when present, assert is indicated by a falling edge
(instead of by a rising edge)
@@ -19,5 +23,8 @@ Example:
gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
assert-falling-edge;
+ echo-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>;
+ echo-active-ms = <100>;
+
compatible = "pps-gpio";
};
_
Patches currently in -mm which might be from tom@xxxxxxxxxx are
resend-pps-descriptor-based-gpio.patch
resend-dt-bindings-pps-pps-gpio-pps-echo-implementation.patch
resend-pps-pps-gpio-pps-echo-implementation.patch
