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authorChristian Lamparter <chunkeey@gmail.com>2019-06-15 19:13:30 +0200
committerChristian Lamparter <chunkeey@gmail.com>2019-06-20 19:58:27 +0200
commit971f31bedcad0a954a4a4e79140346cc896d352e (patch)
treea797c541d44b1b6f160332694099e5829bbc5139 /target/linux/apm821xx/dts/meraki-mx60.dts
parenta95ddaba0272f254a3aeade3aa0c086e1625d672 (diff)
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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." <http://lists.infradead.org/pipermail/openwrt-devel/2019-June/017630.html> 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 <chunkeey@gmail.com>
Diffstat (limited to 'target/linux/apm821xx/dts/meraki-mx60.dts')
-rw-r--r--target/linux/apm821xx/dts/meraki-mx60.dts1
1 files changed, 1 insertions, 0 deletions
diff --git a/target/linux/apm821xx/dts/meraki-mx60.dts b/target/linux/apm821xx/dts/meraki-mx60.dts
index 2550d259ab..3620005e4d 100644
--- a/target/linux/apm821xx/dts/meraki-mx60.dts
+++ b/target/linux/apm821xx/dts/meraki-mx60.dts
@@ -167,6 +167,7 @@
gpios = <&GPIO0 16 GPIO_ACTIVE_LOW>;
interrupt-parent = <&UIC1>;
interrupts = <0x15 IRQ_TYPE_EDGE_FALLING>;
+ debounce-interval = <60>;
};
};
};