From 8c4205446ace4f14ec8725d11f46b570e9bc1fd3 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Fri, 23 Oct 2020 14:15:41 +0100
Subject: [PATCH] overlays: Add option to disable composite to
vc4-kms-v3d
Composite gets enabled automatically if HDMI isn't detected,
which can cause some grief in X should it be not connected
and touchscreens are in use.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
arch/arm/boot/dts/overlays/README | 2 ++
arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts | 1 +
2 files changed, 3 insertions(+)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -2949,6 +2949,8 @@ Params: cma-512 CMA is 5
cma-default Use upstream's default value
audio Enable or disable audio over HDMI (default "on")
noaudio Disable all HDMI audio (default "off")
+ nocomposite Disable the composite video output (default
+ "off")
Name: vc4-kms-v3d-pi4
--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
+++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
@@ -118,5 +118,6 @@
__overrides__ {
audio = <0>,"!13", <0>,"=14";
noaudio = <0>,"=13", <0>,"!14";
+ nocomposite = <0>, "!11";
};
};