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Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0631-overlays-Add-audio-parameter-to-vc4-kms-v3d.patch')
-rw-r--r--target/linux/bcm27xx/patches-4.19/950-0631-overlays-Add-audio-parameter-to-vc4-kms-v3d.patch49
1 files changed, 49 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0631-overlays-Add-audio-parameter-to-vc4-kms-v3d.patch b/target/linux/bcm27xx/patches-4.19/950-0631-overlays-Add-audio-parameter-to-vc4-kms-v3d.patch
new file mode 100644
index 0000000000..a70d50eecd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0631-overlays-Add-audio-parameter-to-vc4-kms-v3d.patch
@@ -0,0 +1,49 @@
+From 418ca5973ad807f9d7f99e68af2bd21c7e8baa4d Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 31 Jul 2019 17:39:37 +0100
+Subject: [PATCH] overlays: Add audio parameter to vc4-kms-v3d
+
+The audio parameter to the vc4-kms-v3d overlay allows audio support
+to be disabled (it defaults to on) by adding "audio=off" to the
+dtoverlay parameters.
+
+See: https://github.com/raspberrypi/linux/issues/2489
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/README | 1 +
+ arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts | 8 ++++++++
+ 2 files changed, 9 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2480,6 +2480,7 @@ Params: cma-256 CMA is 2
+ cma-128 CMA is 128MB
+ cma-96 CMA is 96MB
+ cma-64 CMA is 64MB
++ audio Enable or disable audio over HDMI (default "on")
+
+
+ Name: vga666
+--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
+@@ -134,11 +134,19 @@
+ };
+ };
+
++ fragment@17 {
++ target = <&hdmi>;
++ __dormant__ {
++ dmas;
++ };
++ };
++
+ __overrides__ {
+ cma-256 = <0>,"+0-1-2-3-4";
+ cma-192 = <0>,"-0+1-2-3-4";
+ cma-128 = <0>,"-0-1+2-3-4";
+ cma-96 = <0>,"-0-1-2+3-4";
+ cma-64 = <0>,"-0-1-2-3+4";
++ audio = <0>,"!17";
+ };
+ };