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arm64: dts: freescale: sl28: map GPIOs to input events

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Now that we have support for GPIO lines of the SMARC connector, map the
sleep, power and lid switch signals to the corresponding keys using the
gpio-keys and gpio-keys-polled drivers. The power and sleep signals have
dedicated interrupts, thus we use these ones. The lid switch is just
mapped to a GPIO input and needs polling.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Michael Walle
2020-09-14 23:43:38 +02:00
committed by Shawn Guo
parent c86e4202fd
commit 945710bbdb
1 changed files with 32 additions and 0 deletions
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32
arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
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@@ -9,6 +9,8 @@
/dts-v1/;
#include "fsl-ls1028a.dtsi"
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
/ {
model = "Kontron SMARC-sAL28";
@@ -23,6 +25,36 @@ aliases {
spi1 = &dspi2;
};
buttons0 {
compatible = "gpio-keys";
power-button {
interrupts-extended = <&sl28cpld_intc
4 IRQ_TYPE_EDGE_BOTH>;
linux,code = <KEY_POWER>;
label = "Power";
};
sleep-button {
interrupts-extended = <&sl28cpld_intc
5 IRQ_TYPE_EDGE_BOTH>;
linux,code = <KEY_SLEEP>;
label = "Sleep";
};
};
buttons1 {
compatible = "gpio-keys-polled";
poll-interval = <200>;
lid-switch {
linux,input-type = <EV_SW>;
linux,code = <SW_LID>;
gpios = <&sl28cpld_gpio3 4 GPIO_ACTIVE_LOW>;
label = "Lid";
};
};
chosen {
stdout-path = "serial0:115200n8";
};