diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0725-overlays-gpio-shutdown-Add-debounce-parameter.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0725-overlays-gpio-shutdown-Add-debounce-parameter.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0725-overlays-gpio-shutdown-Add-debounce-parameter.patch b/target/linux/brcm2708/patches-4.19/950-0725-overlays-gpio-shutdown-Add-debounce-parameter.patch new file mode 100644 index 0000000000..d928458b78 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0725-overlays-gpio-shutdown-Add-debounce-parameter.patch @@ -0,0 +1,48 @@ +From 499e28e3a38f0de843b07bf4bbf7692b07c5e3ba Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Mon, 7 Oct 2019 13:51:07 +0100 +Subject: [PATCH] overlays: gpio-shutdown: Add debounce parameter + +Give the gpio-shutdown overlay a debounce parameter that requires +the GPIO to be held at the relevant level for a specified number +of milliseconds. The default value is 100 - higher than the driver +default of 5ms to avoid unfortunate glitches. + +See: https://www.raspberrypi.org/forums/viewtopic.php?f=107&t=253680 + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/overlays/README | 3 +++ + arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts | 2 ++ + 2 files changed, 5 insertions(+) + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -803,6 +803,9 @@ Params: gpio_pin GPIO pin + Note that the default pin (GPIO3) has an + external pullup. + ++ debounce Specify the debounce interval in milliseconds ++ (default 100) ++ + + Name: hd44780-lcd + Info: Configures an HD44780 compatible LCD display. Uses 4 gpio pins for +--- a/arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts ++++ b/arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts +@@ -53,6 +53,7 @@ + label = "shutdown"; + linux,code = <116>; // KEY_POWER + gpios = <&gpio 3 1>; ++ debounce-interval = <100>; // ms + }; + }; + }; +@@ -75,6 +76,7 @@ + + // Allow setting the active_low flag. 0 = active high, 1 = active low + active_low = <&button>,"gpios:8"; ++ debounce = <&button>,"debounce-interval:0"; + }; + + }; |