2022-04-22 15:00:47 +00:00
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From 77dcf640cc614b73c442dfc6f54e9b7eff82b0ff Mon Sep 17 00:00:00 2001
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2021-11-24 17:32:01 +00:00
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Mon, 25 Oct 2021 11:48:18 +0100
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2022-04-22 15:00:47 +00:00
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Subject: [PATCH 556/828] ARM: dts: vc4-kms-v3d: Always disable firmware HDMI
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2021-11-24 17:32:01 +00:00
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Both the firmware audio driver and the vc4-kms-v3d driver are capable
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of providing HDMI audio, but only one should be active at any time.
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The vc4-kms-v3d overlays disable the firmware audio driver, but they
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also have a noaudio parameter that as well as disabling the ARM-side
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HDMI audio also re-enables the firmware HDMI audio. This is not
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guaranteed to work and has been seen to break the display completely.
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Modify the noaudio parameters so that the firmware HDMI audio support
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remains disabled.
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See: https://github.com/raspberrypi/linux/issues/4651
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts | 4 ++--
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arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts | 2 +-
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2 files changed, 3 insertions(+), 3 deletions(-)
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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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2022-04-22 15:00:47 +00:00
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@@ -116,8 +116,8 @@
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2021-11-24 17:32:01 +00:00
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};
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__overrides__ {
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- audio = <0>,"!13", <0>,"=14";
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- noaudio = <0>,"=13", <0>,"!14";
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+ audio = <0>,"!13";
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+ noaudio = <0>,"=13";
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nocomposite = <0>, "!11";
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};
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};
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--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
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2022-04-22 15:00:47 +00:00
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@@ -180,7 +180,7 @@
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2021-11-24 17:32:01 +00:00
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__overrides__ {
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audio = <0>,"!17";
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audio1 = <0>,"!18";
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- noaudio = <0>,"=17", <0>,"=18", <0>,"!19";
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+ noaudio = <0>,"=17", <0>,"=18";
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composite = <0>, "!1",
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<0>, "!2",
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<0>, "!3",
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