target/linux/bcm27xx/patches-5.15/950-0784-overlays-iqs550-Enable-interrupt-pull-down.patch

   1 From 14ea778d2a5281a0f4c94230abccf30bc72c2bdd Mon Sep 17 00:00:00 2001
   2 From: Jeff LaBundy <jeff@labundy.com>
   3 Date: Sat, 19 Mar 2022 20:31:30 -0500
   4 Subject: [PATCH] overlays: iqs550: Enable interrupt pull-down
   5
   6 The device's active-high interrupt normally serves as a push-pull
   7 output, but becomes high-impedance during bootloader mode. Enable
   8 a pull-down to hold the pin in the inactive state.
   9
  10 Signed-off-by: Jeff LaBundy <jeff@labundy.com>
  11 ---
  12  arch/arm/boot/dts/overlays/iqs550-overlay.dts | 15 ++++++++++++++-
  13  1 file changed, 14 insertions(+), 1 deletion(-)
  14
  15 --- a/arch/arm/boot/dts/overlays/iqs550-overlay.dts
  16 +++ b/arch/arm/boot/dts/overlays/iqs550-overlay.dts
  17 @@ -20,6 +20,8 @@
  18                                 reg = <0x74>;
  19                                 interrupt-parent = <&gpio>;
  20                                 interrupts = <4 IRQ_TYPE_LEVEL_HIGH>;
  21 +                               pinctrl-names = "default";
  22 +                               pinctrl-0 = <&iqs550_pins>;
  23                                 touchscreen-size-x = <800>;
  24                                 touchscreen-size-y = <480>;
  25                         };
  26 @@ -34,8 +36,19 @@
  27                 };
  28         };
  29
  30 +       fragment@2 {
  31 +               target = <&gpio>;
  32 +               __overlay__ {
  33 +                       iqs550_pins: iqs550_pins {
  34 +                               brcm,pins = <4>;
  35 +                               brcm,pull = <1>;
  36 +                       };
  37 +               };
  38 +       };
  39 +
  40         __overrides__ {
  41 -               interrupt = <&iqs550>,"interrupts:0";
  42 +               interrupt = <&iqs550>,"interrupts:0",
  43 +                           <&iqs550_pins>,"brcm,pins:0";
  44                 reset = <0>,"+1", <&iqs550_reset>,"reset-gpios:4";
  45                 sizex = <&iqs550>,"touchscreen-size-x:0";
  46                 sizey = <&iqs550>,"touchscreen-size-y:0";