mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 17:01:14 +00:00
67 lines
1.8 KiB
Diff
67 lines
1.8 KiB
Diff
From b37ac8c50684c3517fb9c6f737e7ea444a7d7405 Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
|
|
Date: Thu, 5 Sep 2019 17:41:46 +0100
|
|
Subject: [PATCH 792/806] overlays: mcp23017: Add option for not connecting the
|
|
int GPIO
|
|
|
|
The interrupt GPIO is optional to the driver, therefore add an
|
|
option to not configure it.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
|
|
---
|
|
arch/arm/boot/dts/overlays/README | 1 +
|
|
.../boot/dts/overlays/mcp23017-overlay.dts | 21 +++++++++++++------
|
|
2 files changed, 16 insertions(+), 6 deletions(-)
|
|
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -1427,6 +1427,7 @@ Params: gpiopin Gpio pin
|
|
addr I2C address of the MCP23017 (default: 0x20)
|
|
|
|
mcp23008 Configure an MCP23008 instead.
|
|
+ noints Disable the interrupt GPIO line.
|
|
|
|
|
|
Name: mcp23s17
|
|
--- a/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
|
|
@@ -34,11 +34,6 @@
|
|
reg = <0x20>;
|
|
gpio-controller;
|
|
#gpio-cells = <2>;
|
|
- #interrupt-cells=<2>;
|
|
- interrupt-parent = <&gpio>;
|
|
- interrupts = <4 2>;
|
|
- interrupt-controller;
|
|
- microchip,irq-mirror;
|
|
|
|
status = "okay";
|
|
};
|
|
@@ -52,11 +47,25 @@
|
|
};
|
|
};
|
|
|
|
+ fragment@4 {
|
|
+ target = <&i2c1>;
|
|
+ __overlay__ {
|
|
+ mcp23017_irq: mcp@20 {
|
|
+ #interrupt-cells=<2>;
|
|
+ interrupt-parent = <&gpio>;
|
|
+ interrupts = <4 2>;
|
|
+ interrupt-controller;
|
|
+ microchip,irq-mirror;
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
__overrides__ {
|
|
gpiopin = <&mcp23017_pins>,"brcm,pins:0",
|
|
- <&mcp23017>,"interrupts:0";
|
|
+ <&mcp23017_irq>,"interrupts:0";
|
|
addr = <&mcp23017>,"reg:0", <&mcp23017_pins>,"reg:0";
|
|
mcp23008 = <0>,"=3";
|
|
+ noints = <0>,"!1!4";
|
|
};
|
|
};
|
|
|