target/linux/bcm27xx/patches-6.1/950-1050-dt-Add-drm_fbN_vc4-overrides-for-Pi0-4.patch

   1 From eccaa8588fca9c9ec950664f1d5894bd826b57b0 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Mon, 23 Oct 2023 14:10:15 +0100
   4 Subject: [PATCH] dt: Add drm_fbN_vc4 overrides for Pi0-4
   5
   6 Follows up '61b138adaead ("dt: Add overrides for drm framebuffer
   7 allocations on Pi5")' with an equivalent for Pi0-4.
   8
   9 These will have no effect on most normal systems, but drm_fb0_vc4
  10 will stop SPI displays jumping in and claiming /dev/fb0.
  11
  12 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  13 ---
  14  arch/arm/boot/dts/bcm270x-rpi.dtsi | 5 ++++-
  15  1 file changed, 4 insertions(+), 1 deletion(-)
  16
  17 --- a/arch/arm/boot/dts/bcm270x-rpi.dtsi
  18 +++ b/arch/arm/boot/dts/bcm270x-rpi.dtsi
  19 @@ -1,7 +1,7 @@
  20  /* Downstream modifications to bcm2835-rpi.dtsi */
  21
  22  / {
  23 -       aliases {
  24 +       aliases: aliases {
  25                 aux = &aux;
  26                 sound = &sound;
  27                 soc = &soc;
  28 @@ -98,6 +98,9 @@
  29                 sdio_overclock = <&mmc>,"brcm,overclock-50:0",
  30                                  <&mmcnr>,"brcm,overclock-50:0";
  31                 axiperf      = <&axiperf>,"status";
  32 +               drm_fb0_vc4 = <&aliases>, "drm-fb0=",&vc4;
  33 +               drm_fb1_vc4 = <&aliases>, "drm-fb1=",&vc4;
  34 +               drm_fb2_vc4 = <&aliases>, "drm-fb2=",&vc4;
  35         };
  36  };
  37