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