2019-09-19 14:43:19 +00:00
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From 418ca5973ad807f9d7f99e68af2bd21c7e8baa4d Mon Sep 17 00:00:00 2001
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2019-08-09 17:50:30 +00:00
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 31 Jul 2019 17:39:37 +0100
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2019-12-23 12:42:55 +00:00
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Subject: [PATCH] overlays: Add audio parameter to vc4-kms-v3d
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2019-08-09 17:50:30 +00:00
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The audio parameter to the vc4-kms-v3d overlay allows audio support
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to be disabled (it defaults to on) by adding "audio=off" to the
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dtoverlay parameters.
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See: https://github.com/raspberrypi/linux/issues/2489
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/README | 1 +
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arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts | 8 ++++++++
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2 files changed, 9 insertions(+)
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -2480,6 +2480,7 @@ Params: cma-256 CMA is 2
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cma-128 CMA is 128MB
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cma-96 CMA is 96MB
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cma-64 CMA is 64MB
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+ audio Enable or disable audio over HDMI (default "on")
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Name: vga666
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--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
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@@ -134,11 +134,19 @@
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};
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};
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+ fragment@17 {
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+ target = <&hdmi>;
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+ __dormant__ {
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+ dmas;
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+ };
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+ };
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+
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__overrides__ {
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cma-256 = <0>,"+0-1-2-3-4";
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cma-192 = <0>,"-0+1-2-3-4";
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cma-128 = <0>,"-0-1+2-3-4";
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cma-96 = <0>,"-0-1-2+3-4";
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cma-64 = <0>,"-0-1-2-3+4";
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+ audio = <0>,"!17";
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};
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};
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