mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-24 15:56:49 +00:00
20402106a3
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
88 lines
2.1 KiB
Diff
88 lines
2.1 KiB
Diff
From d4011a19f3e6a9c6696f0d5498df9c17a1ba2fb3 Mon Sep 17 00:00:00 2001
|
|
From: Michael Kaplan <m.kaplan@evva.com>
|
|
Date: Tue, 24 May 2016 10:19:08 +0200
|
|
Subject: [PATCH 357/423] Added Overlay for Microchip MCP23017 I2C gpio
|
|
expander
|
|
|
|
---
|
|
arch/arm/boot/dts/overlays/README | 9 +++++
|
|
arch/arm/boot/dts/overlays/mcp23017-overlay.dts | 54 +++++++++++++++++++++++++
|
|
2 files changed, 63 insertions(+)
|
|
create mode 100644 arch/arm/boot/dts/overlays/mcp23017-overlay.dts
|
|
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -567,6 +567,15 @@ Params: gpio_out_pin GPIO for
|
|
(default "off")
|
|
|
|
|
|
+Name: mcp23017
|
|
+Info: Configures the MCP23017 I2C port expander
|
|
+Load: dtoverlay=mcp23017,<param>=<val>
|
|
+Params: gpiopin Gpio pin connected to the INTA output of the
|
|
+ MCP23017 (default: 4)
|
|
+
|
|
+ addr I2C address of the MCP23017 (default: 0x20)
|
|
+
|
|
+
|
|
Name: mcp2515-can0
|
|
Info: Configures the MCP2515 CAN controller on spi0.0
|
|
Load: dtoverlay=mcp2515-can0,<param>=<val>
|
|
--- /dev/null
|
|
+++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
|
|
@@ -0,0 +1,54 @@
|
|
+// Definitions for MCP23017 Gpio Extender from Microchip Semiconductor
|
|
+
|
|
+/dts-v1/;
|
|
+/plugin/;
|
|
+
|
|
+/ {
|
|
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
|
|
+
|
|
+ fragment@0 {
|
|
+ target = <&i2c1>;
|
|
+ __overlay__ {
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@1 {
|
|
+ target = <&gpio>;
|
|
+ __overlay__ {
|
|
+ mcp23017_pins: mcp23017_pins {
|
|
+ brcm,pins = <4>;
|
|
+ brcm,function = <0>;
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@2 {
|
|
+ target = <&i2c1>;
|
|
+ __overlay__ {
|
|
+ #address-cells = <1>;
|
|
+ #size-cells = <0>;
|
|
+
|
|
+ mcp23017: mcp@20 {
|
|
+ compatible = "microchip,mcp23017";
|
|
+ reg = <0x20>;
|
|
+ gpio-controller;
|
|
+ #gpio-cells = <2>;
|
|
+ #interrupt-cells=<2>;
|
|
+ interrupt-parent = <&gpio>;
|
|
+ interrupts = <4 2>;
|
|
+ interrupt-controller;
|
|
+ microchip,irq-mirror;
|
|
+
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ __overrides__ {
|
|
+ gpiopin = <&mcp23017_pins>,"brcm,pins:0",
|
|
+ <&mcp23017>,"interrupts:0";
|
|
+ addr = <&mcp23017>,"reg:0";
|
|
+ };
|
|
+};
|
|
+
|