target/linux/bcm27xx/patches-5.10/950-0452-ARM-dts-Declare-Pi400-and-CM4-have-no-audio-pins.patch

   1 From a3028b49ed28dfcd27fb12dd811ef5572fc80c30 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Wed, 3 Feb 2021 16:23:43 +0000
   4 Subject: [PATCH] ARM: dts: Declare Pi400 and CM4 have no audio pins
   5
   6 The audio_pins node is left as a placeholder for the audremap overlay,
   7 and it must have (empty) brcm,function and brcm,pins properties
   8 otherwise it will be rejected by the pinctrl driver.
   9
  10 See: https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=301891
  11
  12 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  13 ---
  14  arch/arm/boot/dts/bcm2711-rpi-400.dts | 4 ++--
  15  arch/arm/boot/dts/bcm2711-rpi-cm4.dts | 2 ++
  16  2 files changed, 4 insertions(+), 2 deletions(-)
  17
  18 --- a/arch/arm/boot/dts/bcm2711-rpi-400.dts
  19 +++ b/arch/arm/boot/dts/bcm2711-rpi-400.dts
  20 @@ -565,8 +565,8 @@
  21
  22  &gpio {
  23         audio_pins: audio_pins {
  24 -               brcm,pins = <40 41>;
  25 -               brcm,function = <4>;
  26 +               brcm,pins = <>;
  27 +               brcm,function = <>;
  28         };
  29  };
  30
  31 --- a/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
  32 +++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
  33 @@ -556,6 +556,8 @@
  34
  35  &gpio {
  36         audio_pins: audio_pins {
  37 +               brcm,pins = <>;
  38 +               brcm,function = <>;
  39         };
  40  };
  41