115 lines
2.6 KiB
Diff
Executable file
115 lines
2.6 KiB
Diff
Executable file
From 2fea9b14e39bd6c64e362ba7d170b67d09206987 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Thu, 15 Jan 2015 10:39:06 +0000
|
|
Subject: [PATCH 070/114] Adding w1-gpio device tree overlays
|
|
|
|
N.B. Requires firmware supporting multi-target overrides
|
|
|
|
w1-gpio-overlay:
|
|
Use if a pullup pin is not required.
|
|
Parameters:
|
|
gpiopin=<i/o pin> // default 4
|
|
|
|
w1-gpio-pullup-overlay:
|
|
Use if a pullup pin is required.
|
|
Parameters:
|
|
gpiopin=<i/o pin> // default 4
|
|
pullup=<pullup pin> // default 5
|
|
---
|
|
arch/arm/boot/dts/w1-gpio-overlay.dts | 37 ++++++++++++++++++++++++++
|
|
arch/arm/boot/dts/w1-gpio-pullup-overlay.dts | 39 ++++++++++++++++++++++++++++
|
|
2 files changed, 76 insertions(+)
|
|
create mode 100644 arch/arm/boot/dts/w1-gpio-overlay.dts
|
|
create mode 100644 arch/arm/boot/dts/w1-gpio-pullup-overlay.dts
|
|
|
|
diff --git a/arch/arm/boot/dts/w1-gpio-overlay.dts b/arch/arm/boot/dts/w1-gpio-overlay.dts
|
|
new file mode 100644
|
|
index 0000000..b2c5ee2
|
|
--- /dev/null
|
|
+++ b/arch/arm/boot/dts/w1-gpio-overlay.dts
|
|
@@ -0,0 +1,37 @@
|
|
+// Definitions for lirc-rpi module
|
|
+/dts-v1/;
|
|
+/plugin/;
|
|
+
|
|
+/ {
|
|
+ compatible = "brcm,bcm2708";
|
|
+
|
|
+ fragment@0 {
|
|
+ target-path = "/";
|
|
+ __overlay__ {
|
|
+
|
|
+ w1: onewire@0 {
|
|
+ compatible = "w1-gpio";
|
|
+ pinctrl-names = "default";
|
|
+ pinctrl-0 = <&w1_pins>;
|
|
+ gpios = <&gpio 4 0>;
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@1 {
|
|
+ target = <&gpio>;
|
|
+ __overlay__ {
|
|
+ w1_pins: w1_pins {
|
|
+ brcm,pins = <4>;
|
|
+ brcm,function = <0>; // in (initially)
|
|
+ brcm,pull = <0>; // off
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ __overrides__ {
|
|
+ gpiopin = <&w1>,"gpios:4",
|
|
+ <&w1_pins>,"brcm,pins:0";
|
|
+ };
|
|
+};
|
|
diff --git a/arch/arm/boot/dts/w1-gpio-pullup-overlay.dts b/arch/arm/boot/dts/w1-gpio-pullup-overlay.dts
|
|
new file mode 100644
|
|
index 0000000..b3e97c2
|
|
--- /dev/null
|
|
+++ b/arch/arm/boot/dts/w1-gpio-pullup-overlay.dts
|
|
@@ -0,0 +1,39 @@
|
|
+// Definitions for lirc-rpi module
|
|
+/dts-v1/;
|
|
+/plugin/;
|
|
+
|
|
+/ {
|
|
+ compatible = "brcm,bcm2708";
|
|
+
|
|
+ fragment@0 {
|
|
+ target-path = "/";
|
|
+ __overlay__ {
|
|
+
|
|
+ w1: onewire@0 {
|
|
+ compatible = "w1-gpio";
|
|
+ pinctrl-names = "default";
|
|
+ pinctrl-0 = <&w1_pins>;
|
|
+ gpios = <&gpio 4 0>, <&gpio 5 1>;
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@1 {
|
|
+ target = <&gpio>;
|
|
+ __overlay__ {
|
|
+ w1_pins: w1_pins {
|
|
+ brcm,pins = <4 5>;
|
|
+ brcm,function = <0 1>; // in out
|
|
+ brcm,pull = <0 0>; // off off
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ __overrides__ {
|
|
+ gpiopin = <&w1>,"gpios:4",
|
|
+ <&w1_pins>,"brcm,pins:0";
|
|
+ pullup = <&w1>,"gpios:16",
|
|
+ <&w1_pins>,"brcm,pins:4";
|
|
+ };
|
|
+};
|
|
--
|
|
1.8.3.2
|
|
|