target/linux/bcm27xx/patches-5.10/950-0588-overlays-Allow-multiple-gpio-shutdown-instances.patch

   1 From 76eb23d534419db5e794699ae77f1e644f975e8c Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Sun, 25 Apr 2021 21:07:03 +0100
   4 Subject: [PATCH] overlays: Allow multiple gpio-shutdown instances
   5
   6 There is no reason not to support multiple gpio-shutdown signals,
   7 so add the necessary __override__ magic.
   8
   9 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  10 ---
  11  arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts | 6 ++++--
  12  1 file changed, 4 insertions(+), 2 deletions(-)
  13
  14 --- a/arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts
  15 +++ b/arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts
  16 @@ -24,7 +24,7 @@
  17                         // by a "pinctrl client", as is done below. See:
  18                         //   https://www.kernel.org/doc/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
  19                         //   https://www.kernel.org/doc/Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt
  20 -                       pin_state: shutdown_button_pins {
  21 +                       pin_state: shutdown_button_pins@3 {
  22                                 brcm,pins = <3>; // gpio number
  23                                 brcm,function = <0>; // 0 = input, 1 = output
  24                                 brcm,pull = <2>; // 0 = none, 1 = pull down, 2 = pull up
  25 @@ -35,7 +35,7 @@
  26                 // Add a new device to the /soc devicetree node
  27                 target-path = "/soc";
  28                 __overlay__ {
  29 -                       shutdown_button {
  30 +                       shutdown_button: shutdown_button@3 {
  31                                 // Let the gpio-keys driver handle this device. See:
  32                                 // https://www.kernel.org/doc/Documentation/devicetree/bindings/input/gpio-keys.txt
  33                                 compatible = "gpio-keys";
  34 @@ -69,6 +69,8 @@
  35         __overrides__ {
  36                 // Allow overriding the GPIO number.
  37                 gpio_pin = <&button>,"gpios:4",
  38 +                          <&shutdown_button>,"reg:0",
  39 +                          <&pin_state>,"reg:0",
  40                            <&pin_state>,"brcm,pins:0";
  41
  42                 // Allow changing the internal pullup/down state. 0 = none, 1 = pulldown, 2 = pullup