[PATCH v10 10/13] arm64: dts: freescale: sl28: map GPIOs to input events

Michael Walle
2020-09-14T21:45:21Z

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 v9:
- none

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 5fdf4ec8b39f..f46eb47cfa4d 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