target/linux/bcm27xx/patches-5.15/950-0667-ARM-dts-BCM2711-AON_INTR2-generates-IRQ-edges.patch

   1 From 3050e07453791b8dfecf355a03cee075ec687a55 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Fri, 21 Jan 2022 12:24:57 +0000
   4 Subject: [PATCH] ARM: dts: BCM2711 AON_INTR2 generates IRQ edges
   5
   6 THe AON_INTR2 controller manages the HDMI interrupts, combining them
   7 into a single interrupt passed to the GIC. bcm2711.dtsi declares the
   8 interrupt as being IRQ_TYPE_LEVEL_HIGH, but it should be
   9 IRQ_TYPE_EDGE_RISING. Most of the time the distinction shouldn't
  10 matter, but there is a small possibility of losing interrupts unless
  11 it is corrected.
  12
  13 See: http://lists.infradead.org/pipermail/linux-arm-kernel/2022-January/710292.html
  14
  15 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  16 ---
  17  arch/arm/boot/dts/bcm2711.dtsi | 4 ++--
  18  1 file changed, 2 insertions(+), 2 deletions(-)
  19
  20 --- a/arch/arm/boot/dts/bcm2711.dtsi
  21 +++ b/arch/arm/boot/dts/bcm2711.dtsi
  22 @@ -320,7 +320,7 @@
  23                 aon_intr: interrupt-controller@7ef00100 {
  24                         compatible = "brcm,bcm2711-l2-intc", "brcm,l2-intc";
  25                         reg = <0x7ef00100 0x30>;
  26 -                       interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
  27 +                       interrupts = <GIC_SPI 96 IRQ_TYPE_EDGE_RISING>;
  28                         interrupt-controller;
  29                         #interrupt-cells = <1>;
  30                         status = "disabled";
  31 @@ -403,7 +403,7 @@
  32                                  <&clk_27MHz>;
  33                         resets = <&dvp 1>;
  34                         interrupt-parent = <&aon_intr>;
  35 -                       interrupts = <8>, <7>, <6>,
  36 +                       interrupts = <8>, <7>, <6>,     // This is correct
  37                                      <9>, <10>, <11>;
  38                         interrupt-names = "cec-tx", "cec-rx", "cec-low",
  39                                           "wakeup", "hpd-connected", "hpd-removed";