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Subject[PATCH v9 10/13] arm64: dts: freescale: sl28: map GPIOs to input events
Date
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>
---
Changes since v8:
- none

Changes since v7:
- none

Changes since v6:
- none

Changes since v5:
- none

Changes since v4:
- none

Changes since v3:
- see cover letter

.../freescale/fsl-ls1028a-kontron-sl28.dts | 32 +++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
index 9f9834eafe65..17a2f5dacc3f 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
@@ -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 @@
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";
};
--
2.20.1
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