From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/Documentation/devicetree/bindings/pps/pps-gpio.txt | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/kernel/Documentation/devicetree/bindings/pps/pps-gpio.txt b/kernel/Documentation/devicetree/bindings/pps/pps-gpio.txt
index 3683874..9012a2a 100644
--- a/kernel/Documentation/devicetree/bindings/pps/pps-gpio.txt
+++ b/kernel/Documentation/devicetree/bindings/pps/pps-gpio.txt
@@ -7,6 +7,10 @@
- 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 @@
gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
assert-falling-edge;
+ echo-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>;
+ echo-active-ms = <100>;
+
compatible = "pps-gpio";
};
--
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