1 From afe88750090d60d94b365250968e116ec88448c1 Mon Sep 17 00:00:00 2001
2 From: Phil Elwell <phil@raspberrypi.org>
3 Date: Wed, 18 Jul 2018 17:25:00 +0100
4 Subject: [PATCH] overlays: Add gpio-no-bank0-irq overlay
6 See: https://github.com/raspberrypi/linux/issues/2590
8 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
10 arch/arm/boot/dts/overlays/Makefile | 1 +
11 arch/arm/boot/dts/overlays/README | 9 +++++++++
12 .../dts/overlays/gpio-no-bank0-irq-overlay.dts | 14 ++++++++++++++
13 3 files changed, 24 insertions(+)
14 create mode 100755 arch/arm/boot/dts/overlays/gpio-no-bank0-irq-overlay.dts
16 --- a/arch/arm/boot/dts/overlays/Makefile
17 +++ b/arch/arm/boot/dts/overlays/Makefile
18 @@ -37,6 +37,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
22 + gpio-no-bank0-irq.dtbo \
26 --- a/arch/arm/boot/dts/overlays/README
27 +++ b/arch/arm/boot/dts/overlays/README
28 @@ -597,6 +597,15 @@ Params: gpio GPIO pin
29 keycode Set the key code for the button
32 +Name: gpio-no-bank0-irq
33 +Info: Use this overlay to disable GPIO interrupts for GPIOs in bank 0 (0-27),
34 + which can be useful for UIO drivers.
35 + N.B. Using this overlay will trigger a kernel WARN during booting, but
36 + this can safely be ignored - the system should work as expected.
37 +Load: dtoverlay=gpio-no-bank0-irq
42 Info: Use this overlay to disable all GPIO interrupts, which can be useful
43 for user-space GPIO edge detection systems.
45 +++ b/arch/arm/boot/dts/overlays/gpio-no-bank0-irq-overlay.dts
51 + compatible = "brcm,bcm2835";
54 + // Configure the gpio pin controller
57 + interrupts = <255 255>, <2 18>;