target/linux/bcm27xx/patches-4.19/950-0689-overlays-mcp23017-rename-the-GPIO-pins-node-with-the.patch

   1 From 9802671acf4250d6541d175ba599da03cee8acc1 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Thu, 5 Sep 2019 17:36:38 +0100
   4 Subject: [PATCH] overlays: mcp23017: rename the GPIO pins node with
   5  the device
   6
   7 In order to allow the overlay to be loaded multiple times the
   8 GPIO node for the interrupt line needs to be unique.
   9 Rename it based on the MCP23017 I2C address
  10
  11 https://github.com/raspberrypi/linux/issues/3207
  12
  13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  14 ---
  15  arch/arm/boot/dts/overlays/mcp23017-overlay.dts | 4 ++--
  16  1 file changed, 2 insertions(+), 2 deletions(-)
  17
  18 --- a/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
  19 +++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
  20 @@ -16,7 +16,7 @@
  21         fragment@1 {
  22                 target = <&gpio>;
  23                 __overlay__ {
  24 -                       mcp23017_pins: mcp23017_pins {
  25 +                       mcp23017_pins: mcp23017_pins@20 {
  26                                 brcm,pins = <4>;
  27                                 brcm,function = <0>;
  28                         };
  29 @@ -55,7 +55,7 @@
  30         __overrides__ {
  31                 gpiopin = <&mcp23017_pins>,"brcm,pins:0",
  32                                 <&mcp23017>,"interrupts:0";
  33 -               addr = <&mcp23017>,"reg:0";
  34 +               addr = <&mcp23017>,"reg:0", <&mcp23017_pins>,"reg:0";
  35                 mcp23008 = <0>,"=3";
  36         };
  37  };