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From 3050e07453791b8dfecf355a03cee075ec687a55 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Fri, 21 Jan 2022 12:24:57 +0000
Subject: [PATCH] ARM: dts: BCM2711 AON_INTR2 generates IRQ edges
THe AON_INTR2 controller manages the HDMI interrupts, combining them
into a single interrupt passed to the GIC. bcm2711.dtsi declares the
interrupt as being IRQ_TYPE_LEVEL_HIGH, but it should be
IRQ_TYPE_EDGE_RISING. Most of the time the distinction shouldn't
matter, but there is a small possibility of losing interrupts unless
it is corrected.
See: http://lists.infradead.org/pipermail/linux-arm-kernel/2022-January/710292.html
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
arch/arm/boot/dts/bcm2711.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -320,7 +320,7 @@
aon_intr: interrupt-controller@7ef00100 {
compatible = "brcm,bcm2711-l2-intc", "brcm,l2-intc";
reg = <0x7ef00100 0x30>;
- interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+ interrupts = <GIC_SPI 96 IRQ_TYPE_EDGE_RISING>;
interrupt-controller;
#interrupt-cells = <1>;
status = "disabled";
@@ -403,7 +403,7 @@
<&clk_27MHz>;
resets = <&dvp 1>;
interrupt-parent = <&aon_intr>;
- interrupts = <8>, <7>, <6>,
+ interrupts = <8>, <7>, <6>, // This is correct
<9>, <10>, <11>;
interrupt-names = "cec-tx", "cec-rx", "cec-low",
"wakeup", "hpd-connected", "hpd-removed";
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