diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0161-overlays-Add-gpio-no-bank0-irq-overlay.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0161-overlays-Add-gpio-no-bank0-irq-overlay.patch | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0161-overlays-Add-gpio-no-bank0-irq-overlay.patch b/target/linux/brcm2708/patches-4.19/950-0161-overlays-Add-gpio-no-bank0-irq-overlay.patch new file mode 100644 index 0000000000..7a93d2fd23 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0161-overlays-Add-gpio-no-bank0-irq-overlay.patch @@ -0,0 +1,60 @@ +From afe88750090d60d94b365250968e116ec88448c1 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Wed, 18 Jul 2018 17:25:00 +0100 +Subject: [PATCH] overlays: Add gpio-no-bank0-irq overlay + +See: https://github.com/raspberrypi/linux/issues/2590 + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 9 +++++++++ + .../dts/overlays/gpio-no-bank0-irq-overlay.dts | 14 ++++++++++++++ + 3 files changed, 24 insertions(+) + create mode 100755 arch/arm/boot/dts/overlays/gpio-no-bank0-irq-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -37,6 +37,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + gpio-ir.dtbo \ + gpio-ir-tx.dtbo \ + gpio-key.dtbo \ ++ gpio-no-bank0-irq.dtbo \ + gpio-no-irq.dtbo \ + gpio-poweroff.dtbo \ + gpio-shutdown.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -597,6 +597,15 @@ Params: gpio GPIO pin + keycode Set the key code for the button + + ++Name: gpio-no-bank0-irq ++Info: Use this overlay to disable GPIO interrupts for GPIOs in bank 0 (0-27), ++ which can be useful for UIO drivers. ++ N.B. Using this overlay will trigger a kernel WARN during booting, but ++ this can safely be ignored - the system should work as expected. ++Load: dtoverlay=gpio-no-bank0-irq ++Params: <None> ++ ++ + Name: gpio-no-irq + Info: Use this overlay to disable all GPIO interrupts, which can be useful + for user-space GPIO edge detection systems. +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/gpio-no-bank0-irq-overlay.dts +@@ -0,0 +1,14 @@ ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835"; ++ ++ fragment@0 { ++ // Configure the gpio pin controller ++ target = <&gpio>; ++ __overlay__ { ++ interrupts = <255 255>, <2 18>; ++ }; ++ }; ++}; |