diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0316-overlays-Add-gpio-no-irq-overlay.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0316-overlays-Add-gpio-no-irq-overlay.patch | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0316-overlays-Add-gpio-no-irq-overlay.patch b/target/linux/brcm2708/patches-4.14/950-0316-overlays-Add-gpio-no-irq-overlay.patch new file mode 100644 index 0000000000..ba0e4094da --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0316-overlays-Add-gpio-no-irq-overlay.patch @@ -0,0 +1,60 @@ +From 174a2e7f83a033252da488edd3072f446f82325d Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Tue, 19 Jun 2018 15:04:45 +0100 +Subject: [PATCH 316/454] overlays: Add gpio-no-irq overlay + +An overlay to disable all GPIO interrupts. + +See: https://github.com/raspberrypi/linux/issues/2550 + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 7 +++++++ + arch/arm/boot/dts/overlays/gpio-no-irq-overlay.dts | 14 ++++++++++++++ + 3 files changed, 22 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/gpio-no-irq-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -35,6 +35,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + gpio-ir.dtbo \ + gpio-ir-tx.dtbo \ + gpio-key.dtbo \ ++ gpio-no-irq.dtbo \ + gpio-poweroff.dtbo \ + gpio-shutdown.dtbo \ + hifiberry-amp.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -583,6 +583,13 @@ Params: gpio GPIO pin + keycode Set the key code for the button + + ++Name: gpio-no-irq ++Info: Use this overlay to disable all GPIO interrupts, which can be useful ++ for user-space GPIO edge detection systems. ++Load: dtoverlay=gpio-no-irq ++Params: <None> ++ ++ + Name: gpio-poweroff + Info: Drives a GPIO high or low on poweroff (including halt). Enabling this + overlay will prevent the ability to boot by driving GPIO3 low. +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/gpio-no-irq-overlay.dts +@@ -0,0 +1,14 @@ ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835"; ++ ++ fragment@0 { ++ // Configure the gpio pin controller ++ target = <&gpio>; ++ __overlay__ { ++ interrupts; ++ }; ++ }; ++}; |