| From bbced22ee3d4c08612bbc35c860d2274e85d5a51 Mon Sep 17 00:00:00 2001 |
| From: Dave Stevenson <dave.stevenson@raspberrypi.com> |
| Date: Thu, 27 Aug 2020 18:57:26 +0100 |
| Subject: [PATCH] overlays: Add option for composite to |
| vc4-kms-v3d-pi4. |
| |
| Composite is an alternative to HDMI/DPI/DSI on Pi4 as it |
| requires very particular clock setups. |
| Add an option to vc4-kms-v3d-pi4 to enable composite and |
| disable all other graphics outputs. |
| |
| NB This must be used in conjunction with enable_tvout=1 |
| |
| Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> |
| --- |
| arch/arm/boot/dts/overlays/README | 2 ++ |
| .../dts/overlays/vc4-kms-v3d-pi4-overlay.dts | 26 +++++++++++++++++++ |
| 2 files changed, 28 insertions(+) |
| |
| --- a/arch/arm/boot/dts/overlays/README |
| +++ b/arch/arm/boot/dts/overlays/README |
| @@ -2924,6 +2924,8 @@ Params: cma-256 CMA is 2 |
| audio1 Enable or disable audio over HDMI1 (default |
| "on") |
| noaudio Disable all HDMI audio (default "off") |
| + composite Enable the composite output (disables all other |
| + outputs) |
| |
| |
| Name: vga666 |
| --- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts |
| +++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts |
| @@ -152,9 +152,35 @@ |
| }; |
| }; |
| |
| + fragment@21 { |
| + target = <&pixelvalve3>; |
| + __dormant__ { |
| + status = "okay"; |
| + }; |
| + }; |
| + |
| + fragment@22 { |
| + target = <&vec>; |
| + __dormant__ { |
| + status = "okay"; |
| + }; |
| + }; |
| + |
| __overrides__ { |
| audio = <0>,"!17"; |
| audio1 = <0>,"!18"; |
| noaudio = <0>,"=17", <0>,"=18", <0>,"!19"; |
| + composite = <0>, "!1", |
| + <0>, "!2", |
| + <0>, "!3", |
| + <0>, "!4", |
| + <0>, "!6", |
| + <0>, "!7", |
| + <0>, "!8", |
| + <0>, "!9", |
| + <0>, "!10", |
| + <0>, "!16", |
| + <0>, "=21", |
| + <0>, "=22"; |
| }; |
| }; |