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From b90a1393b3bdffa88c8e8dfbdc2bec650a5f885e Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 9 Aug 2016 21:51:41 +0100
Subject: [PATCH] overlays: Add assert_falling_edge to pps-gpio overlay
See: https://github.com/raspberrypi/linux/issues/1590
---
arch/arm/boot/dts/overlays/README | 2 ++
arch/arm/boot/dts/overlays/pps-gpio-overlay.dts | 1 +
2 files changed, 3 insertions(+)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -797,6 +797,8 @@ Name: pps-gpio
Info: Configures the pps-gpio (pulse-per-second time signal via GPIO).
Load: dtoverlay=pps-gpio,<param>=<val>
Params: gpiopin Input GPIO (default "18")
+ assert_falling_edge When present, assert is indicated by a falling
+ edge, rather than by a rising edge
Name: pwm
--- a/arch/arm/boot/dts/overlays/pps-gpio-overlay.dts
+++ b/arch/arm/boot/dts/overlays/pps-gpio-overlay.dts
@@ -30,5 +30,6 @@
__overrides__ {
gpiopin = <&pps>,"gpios:4",
<&pps_pins>,"brcm,pins:0";
+ assert_falling_edge = <&pps>,"assert-falling-edge?";
};
};
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