git.openwrt.org Git - openwrt/openwrt.git/blob

   1 From bbced22ee3d4c08612bbc35c860d2274e85d5a51 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Thu, 27 Aug 2020 18:57:26 +0100
   4 Subject: [PATCH] overlays: Add option for composite to
   5  vc4-kms-v3d-pi4.
   6
   7 Composite is an alternative to HDMI/DPI/DSI on Pi4 as it
   8 requires very particular clock setups.
   9 Add an option to vc4-kms-v3d-pi4 to enable composite and
  10 disable all other graphics outputs.
  11
  12 NB This must be used in conjunction with enable_tvout=1
  13
  14 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  15 ---
  16  arch/arm/boot/dts/overlays/README             |  2 ++
  17  .../dts/overlays/vc4-kms-v3d-pi4-overlay.dts  | 26 +++++++++++++++++++
  18  2 files changed, 28 insertions(+)
  19
  20 --- a/arch/arm/boot/dts/overlays/README
  21 +++ b/arch/arm/boot/dts/overlays/README
  22 @@ -2924,6 +2924,8 @@ Params: cma-256                 CMA is 2
  23          audio1                  Enable or disable audio over HDMI1 (default
  24                                  "on")
  25          noaudio                 Disable all HDMI audio (default "off")
  26 +        composite               Enable the composite output (disables all other
  27 +                                outputs)
  28
  29
  30  Name:   vga666
  31 --- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
  32 +++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
  33 @@ -152,9 +152,35 @@
  34                 };
  35         };
  36
  37 +       fragment@21 {
  38 +               target = <&pixelvalve3>;
  39 +               __dormant__  {
  40 +                       status = "okay";
  41 +               };
  42 +       };
  43 +
  44 +       fragment@22 {
  45 +               target = <&vec>;
  46 +               __dormant__  {
  47 +                       status = "okay";
  48 +               };
  49 +       };
  50 +
  51         __overrides__ {
  52                 audio   = <0>,"!17";
  53                 audio1   = <0>,"!18";
  54                 noaudio = <0>,"=17", <0>,"=18", <0>,"!19";
  55 +               composite = <0>, "!1",
  56 +                           <0>, "!2",
  57 +                           <0>, "!3",
  58 +                           <0>, "!4",
  59 +                           <0>, "!6",
  60 +                           <0>, "!7",
  61 +                           <0>, "!8",
  62 +                           <0>, "!9",
  63 +                           <0>, "!10",
  64 +                           <0>, "!16",
  65 +                           <0>, "=21",
  66 +                           <0>, "=22";
  67         };
  68  };