This patch adds support for simple GPIO-based button availabled on
Exynos4 based Odroid boards. All supported boards have POWER button,
which has been defined in exynos4412-odroid-common.dtsi. X/X2 boards
also have additional user-configurable button which has been mapped to
KEY_HOME. All defined keys have been marked as possible wakeup source.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 24 ++++++++++++++++++++++++
arch/arm/boot/dts/exynos4412-odroidx.dts | 21 +++++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
index ad2cb32a3439..d1b33a8efa9d 100644
--- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
+++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
@@ -7,6 +7,7 @@
* published by the Free Software Foundation.
*/
+#include <dt-bindings/input/input.h>
#include "exynos4412.dtsi"
/ {
@@ -15,6 +16,22 @@
reg = <0x0204F000 0x1000>;
};
+ gpio_keys {
+ compatible = "gpio-keys";
+ pinctrl-names = "default";
+ pinctrl-0 = <&gpio_power_key>;
+
+ power_key {
+ interrupt-parent = <&gpx1>;
+ interrupts = <3 0>;
+ gpios = <&gpx1 3 1>;
+ linux,code = <KEY_POWER>;
+ label = "power key";
+ debounce-interval = <10>;
+ gpio-key,wakeup;
+ };
+ };
+
mmc@12550000 {
pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
pinctrl-names = "default";
@@ -316,3 +333,10 @@
status = "okay";
};
};
+
+&pinctrl_1 {
+ gpio_power_key: power_key {
+ samsung,pins = "gpx1-3";
+ samsung,pin-pud = <0>;
+ };
+};
diff --git a/arch/arm/boot/dts/exynos4412-odroidx.dts b/arch/arm/boot/dts/exynos4412-odroidx.dts
index 8b453a31410d..cb1cfe7239c4 100644
--- a/arch/arm/boot/dts/exynos4412-odroidx.dts
+++ b/arch/arm/boot/dts/exynos4412-odroidx.dts
@@ -46,6 +46,20 @@
status = "okay";
};
+ gpio_keys {
+ pinctrl-0 = <&gpio_power_key &gpio_home_key>;
+
+ home_key {
+ interrupt-parent = <&gpx2>;
+ interrupts = <2 0>;
+ gpios = <&gpx2 2 0>;
+ linux,code = <KEY_HOME>;
+ label = "home key";
+ debounce-interval = <10>;
+ gpio-key,wakeup;
+ };
+ };
+
regulator_p3v3 {
compatible = "regulator-fixed";
regulator-name = "p3v3_en";
@@ -62,3 +76,10 @@
status = "okay";
};
};
+
+&pinctrl_1 {
+ gpio_home_key: home_key {
+ samsung,pins = "gpx2-2";
+ samsung,pin-pud = <0>;
+ };
+};
--
1.9.2
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