boards: ambiq: add user button

Added user button for apollo4p_blue_kxr_evb and apollo4p_evb

Signed-off-by: Chew Zeh Yang <[email protected]>

Author: zeonchew

boards/ambiq/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb.dts

@@ -1,5 +1,6 @@
 /dts-v1/;
 #include <ambiq/ambiq_apollo4p_blue.dtsi>
+#include <zephyr/dt-bindings/input/input-event-codes.h>
 
 #include "apollo4p_blue_kxr_evb-pinctrl.dtsi"
 
@@ -45,13 +46,18 @@
 
 	buttons {
 		compatible = "gpio-keys";
+		polling-mode;
 		button0: button_0 {
 			gpios = <&gpio0_31 17 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
 			label = "BTN0";
+			zephyr,code = <INPUT_KEY_0>;
+			status = "okay";
 		};
 		button1: button_1 {
 			gpios = <&gpio0_31 19 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
 			label = "BTN1";
+			zephyr,code = <INPUT_KEY_1>;
+			status = "okay";
 		};
 	};
 };

boards/ambiq/apollo4p_evb/apollo4p_evb.dts

@@ -1,5 +1,6 @@
 /dts-v1/;
 #include <ambiq/ambiq_apollo4p.dtsi>
+#include <zephyr/dt-bindings/input/input-event-codes.h>
 
 #include "apollo4p_evb-pinctrl.dtsi"
 
@@ -45,13 +46,18 @@
 
 	buttons {
 		compatible = "gpio-keys";
+		polling-mode;
 		button0: button_0 {
 			gpios = <&gpio0_31 18 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
 			label = "BTN0";
+			zephyr,code = <INPUT_KEY_0>;
+			status = "okay";
 		};
 		button1: button_1 {
 			gpios = <&gpio0_31 19 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
 			label = "BTN1";
+			zephyr,code = <INPUT_KEY_1>;
+			status = "okay";
 		};
 	};
 };