From 971f31bedcad0a954a4a4e79140346cc896d352e Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 15 Jun 2019 19:13:30 +0200 Subject: apm821xx: fix bogus key-presses on boot "There are often transient line events when the system is powered up and initialized and it is often necessary for the gpio_chip driver to clear any interrupt flags in hardware before setting up the gpio chip, especially the irqchip portions of it." This patch adds a fix for the APM821XX's interrupt controller to clear any bogus pending toggled interrupts that happens on various APM821XX boards on boot. The patch also changes the debouce-interval from the default 5ms debounce interval to 60ms all around. The default setting caused on occasions that the button state became stuck in a pressed state, even though the button was released. Signed-off-by: Christian Lamparter --- target/linux/apm821xx/dts/meraki-mr24.dts | 1 + 1 file changed, 1 insertion(+) (limited to 'target/linux/apm821xx/dts/meraki-mr24.dts') diff --git a/target/linux/apm821xx/dts/meraki-mr24.dts b/target/linux/apm821xx/dts/meraki-mr24.dts index 144c6f0eb3..8fdef7c171 100644 --- a/target/linux/apm821xx/dts/meraki-mr24.dts +++ b/target/linux/apm821xx/dts/meraki-mr24.dts @@ -175,6 +175,7 @@ interrupt-parent = <&UIC1>; interrupts = <0x15 IRQ_TYPE_EDGE_FALLING>; gpios = <&GPIO0 16 GPIO_ACTIVE_LOW>; + debounce-interval = <60>; }; }; }; -- cgit v1.2.3