target/linux/bcm27xx/patches-6.1/950-0449-overlays-pisound-Make-button-pins-owned-by-card.patch

   1 From 028e7d32c62c7cd277b23990d29fc71e43f1f66b Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Wed, 2 Nov 2022 09:54:39 +0000
   4 Subject: [PATCH] overlays: pisound: Make button pins owned by card
   5
   6 The pisound overlay claims a number of GPIOs using a pinctrl node, but
   7 for some reason hangs this claim on the main gpio node. This obscures
   8 the ownership of the pins (as shown by gpioinfo and in the kernel logs)
   9 and isn't scalable - only one overlay can use the trick at a time.
  10
  11 Change the overlay to make the pin ownership clear and avoid any future
  12 conflicts, removing a bogus claim on pins_spi0 at the same time.
  13
  14 See: https://github.com/raspberrypi/linux/issues/5235
  15
  16 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  17 ---
  18  arch/arm/boot/dts/overlays/pisound-overlay.dts | 6 +-----
  19  1 file changed, 1 insertion(+), 5 deletions(-)
  20
  21 --- a/arch/arm/boot/dts/overlays/pisound-overlay.dts
  22 +++ b/arch/arm/boot/dts/overlays/pisound-overlay.dts
  23 @@ -55,8 +55,6 @@
  24                         pisound_spi: pisound_spi@0{
  25                                 compatible = "blokaslabs,pisound-spi";
  26                                 reg = <0>;
  27 -                               pinctrl-names = "default";
  28 -                               pinctrl-0 = <&spi0_pins>;
  29                                 spi-max-frequency = <1000000>;
  30                         };
  31                 };
  32 @@ -80,6 +78,7 @@
  33                         i2s-controller = <&i2s>;
  34                         status = "okay";
  35
  36 +                       pinctrl-names = "default";
  37                         pinctrl-0 = <&pisound_button_pins>;
  38
  39                         osr-gpios =
  40 @@ -100,9 +99,6 @@
  41         fragment@6 {
  42                 target = <&gpio>;
  43                 __overlay__ {
  44 -                       pinctrl-names = "default";
  45 -                       pinctrl-0 = <&pisound_button_pins>;
  46 -
  47                         pisound_button_pins: pisound_button_pins {
  48                                 brcm,pins = <17>;
  49                                 brcm,function = <0>; // Input