ARM: dts: imx6qdl-sabrelite: add gpio-keys

Add power, menu, home, back, volume up, and volume down
buttons.

Also, apply same changes to imx6qdl-nitrogen6x.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx6qdl-nitrogen6x.dtsi

@@ -10,6 +10,8 @@
  * http://www.opensource.org/licenses/gpl-license.html
  * http://www.gnu.org/copyleft/gpl.html
  */
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
 	memory {
@@ -50,6 +52,49 @@ reg_usb_otg_vbus: regulator@2 {
 		};
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_keys>;
+
+		power {
+			label = "Power Button";
+			gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_POWER>;
+			gpio-key,wakeup;
+		};
+
+		menu {
+			label = "Menu";
+			gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_MENU>;
+		};
+
+		home {
+			label = "Home";
+			gpios = <&gpio2 4 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_HOME>;
+		};
+
+		back {
+			label = "Back";
+			gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_BACK>;
+		};
+
+		volume-up {
+			label = "Volume Up";
+			gpios = <&gpio7 13 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEUP>;
+		};
+
+		volume-down {
+			label = "Volume Down";
+			gpios = <&gpio4 5 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEDOWN>;
+		};
+	};
+
 	sound {
 		compatible = "fsl,imx6q-nitrogen6x-sgtl5000",
 			     "fsl,imx-audio-sgtl5000";
@@ -190,6 +235,23 @@ MX6QDL_PAD_ENET_RXD0__GPIO1_IO27	0x000b0
 			>;
 		};
 
+		pinctrl_gpio_keys: gpio_keysgrp {
+			fsl,pins = <
+				/* Power Button */
+				MX6QDL_PAD_NANDF_D3__GPIO2_IO03		0x1b0b0
+				/* Menu Button */
+				MX6QDL_PAD_NANDF_D1__GPIO2_IO01		0x1b0b0
+				/* Home Button */
+				MX6QDL_PAD_NANDF_D4__GPIO2_IO04		0x1b0b0
+				/* Back Button */
+				MX6QDL_PAD_NANDF_D2__GPIO2_IO02		0x1b0b0
+				/* Volume Up Button */
+				MX6QDL_PAD_GPIO_18__GPIO7_IO13		0x1b0b0
+				/* Volume Down Button */
+				MX6QDL_PAD_GPIO_19__GPIO4_IO05		0x1b0b0
+			>;
+		};
+
 		pinctrl_i2c1: i2c1grp {
 			fsl,pins = <
 				MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1

arch/arm/boot/dts/imx6qdl-sabrelite.dtsi

@@ -9,6 +9,8 @@
  * http://www.opensource.org/licenses/gpl-license.html
  * http://www.gnu.org/copyleft/gpl.html
  */
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
 	memory {
@@ -49,6 +51,49 @@ reg_usb_otg_vbus: regulator@2 {
 		};
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_keys>;
+
+		power {
+			label = "Power Button";
+			gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_POWER>;
+			gpio-key,wakeup;
+		};
+
+		menu {
+			label = "Menu";
+			gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_MENU>;
+		};
+
+		home {
+			label = "Home";
+			gpios = <&gpio2 4 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_HOME>;
+		};
+
+		back {
+			label = "Back";
+			gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_BACK>;
+		};
+
+		volume-up {
+			label = "Volume Up";
+			gpios = <&gpio7 13 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEUP>;
+		};
+
+		volume-down {
+			label = "Volume Down";
+			gpios = <&gpio4 5 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEDOWN>;
+		};
+	};
+
 	sound {
 		compatible = "fsl,imx6q-sabrelite-sgtl5000",
 			     "fsl,imx-audio-sgtl5000";
@@ -189,6 +234,23 @@ MX6QDL_PAD_EIM_D23__GPIO3_IO23		0x000b0
 			>;
 		};
 
+		pinctrl_gpio_keys: gpio_keysgrp {
+			fsl,pins = <
+				/* Power Button */
+				MX6QDL_PAD_NANDF_D3__GPIO2_IO03		0x1b0b0
+				/* Menu Button */
+				MX6QDL_PAD_NANDF_D1__GPIO2_IO01		0x1b0b0
+				/* Home Button */
+				MX6QDL_PAD_NANDF_D4__GPIO2_IO04		0x1b0b0
+				/* Back Button */
+				MX6QDL_PAD_NANDF_D2__GPIO2_IO02		0x1b0b0
+				/* Volume Up Button */
+				MX6QDL_PAD_GPIO_18__GPIO7_IO13		0x1b0b0
+				/* Volume Down Button */
+				MX6QDL_PAD_GPIO_19__GPIO4_IO05		0x1b0b0
+			>;
+		};
+
 		pinctrl_i2c1: i2c1grp {
 			fsl,pins = <
 				MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1