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62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
45 lines
1.3 KiB
Diff
45 lines
1.3 KiB
Diff
From c74f523a5af1d9d3a6f9aee05585e52a78a79f53 Mon Sep 17 00:00:00 2001
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From: Tim Gover <tim.gover@raspberrypi.com>
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Date: Fri, 7 Aug 2020 13:55:18 +0100
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Subject: [PATCH] dts: bcm2711: Disable DVP by default
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The HDMI DVP should be disabled by default as is the case for other
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display related drivers. This changes resolves an issue when using
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the legacy firmware display driver where the DVP caused the 108 MHz
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clock in HDMI TX to be gated off when Linux started. This effectively
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stopped the firmware from being able to change the HDMI analog PHY
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registers.
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Add a fragment to re-enable this in vc4-kms-v3d-pi4-overlay
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---
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arch/arm/boot/dts/bcm2711-rpi.dtsi | 1 +
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arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts | 7 +++++++
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2 files changed, 8 insertions(+)
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--- a/arch/arm/boot/dts/bcm2711-rpi.dtsi
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+++ b/arch/arm/boot/dts/bcm2711-rpi.dtsi
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@@ -46,6 +46,7 @@
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clocks = <&clk_108MHz>;
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#clock-cells = <1>;
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#reset-cells = <1>;
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+ status = "disabled";
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};
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hdmi0: hdmi@7ef00700 {
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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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@@ -145,6 +145,13 @@
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};
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};
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+ fragment@20 {
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+ target = <&dvp>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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__overrides__ {
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audio = <0>,"!17";
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audio1 = <0>,"!18";
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