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From 9802671acf4250d6541d175ba599da03cee8acc1 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Thu, 5 Sep 2019 17:36:38 +0100
Subject: [PATCH] overlays: mcp23017: rename the GPIO pins node with
the device
In order to allow the overlay to be loaded multiple times the
GPIO node for the interrupt line needs to be unique.
Rename it based on the MCP23017 I2C address
https://github.com/raspberrypi/linux/issues/3207
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
arch/arm/boot/dts/overlays/mcp23017-overlay.dts | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
+++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
@@ -16,7 +16,7 @@
fragment@1 {
target = <&gpio>;
__overlay__ {
- mcp23017_pins: mcp23017_pins {
+ mcp23017_pins: mcp23017_pins@20 {
brcm,pins = <4>;
brcm,function = <0>;
};
@@ -55,7 +55,7 @@
__overrides__ {
gpiopin = <&mcp23017_pins>,"brcm,pins:0",
<&mcp23017>,"interrupts:0";
- addr = <&mcp23017>,"reg:0";
+ addr = <&mcp23017>,"reg:0", <&mcp23017_pins>,"reg:0";
mcp23008 = <0>,"=3";
};
};
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