target/linux/bcm27xx/patches-4.19/950-0631-overlays-Add-audio-parameter-to-vc4-kms-v3d.patch

   1 From 418ca5973ad807f9d7f99e68af2bd21c7e8baa4d Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Wed, 31 Jul 2019 17:39:37 +0100
   4 Subject: [PATCH] overlays: Add audio parameter to vc4-kms-v3d
   5
   6 The audio parameter to the vc4-kms-v3d overlay allows audio support
   7 to be disabled (it defaults to on) by adding "audio=off" to the
   8 dtoverlay parameters.
   9
  10 See: https://github.com/raspberrypi/linux/issues/2489
  11
  12 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  13 ---
  14  arch/arm/boot/dts/overlays/README                  | 1 +
  15  arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts | 8 ++++++++
  16  2 files changed, 9 insertions(+)
  17
  18 --- a/arch/arm/boot/dts/overlays/README
  19 +++ b/arch/arm/boot/dts/overlays/README
  20 @@ -2480,6 +2480,7 @@ Params: cma-256                 CMA is 2
  21          cma-128                 CMA is 128MB
  22          cma-96                  CMA is 96MB
  23          cma-64                  CMA is 64MB
  24 +        audio                   Enable or disable audio over HDMI (default "on")
  25
  26
  27  Name:   vga666
  28 --- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
  29 +++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
  30 @@ -134,11 +134,19 @@
  31                 };
  32         };
  33
  34 +       fragment@17 {
  35 +               target = <&hdmi>;
  36 +               __dormant__  {
  37 +                       dmas;
  38 +               };
  39 +       };
  40 +
  41         __overrides__ {
  42                 cma-256 = <0>,"+0-1-2-3-4";
  43                 cma-192 = <0>,"-0+1-2-3-4";
  44                 cma-128 = <0>,"-0-1+2-3-4";
  45                 cma-96  = <0>,"-0-1-2+3-4";
  46                 cma-64  = <0>,"-0-1-2-3+4";
  47 +               audio   = <0>,"!17";
  48         };
  49  };