arm64/dts: add google assist gpio key

Guam/Guamp support the hardware key to trigger the google
assistant.

Change-Id: I59376040e602b3ec53af718bdc160753b1db0c0a
Signed-off-by: chenl18 <chenlei18@lenovo.com>
Reviewed-on: https://gerrit.mot.com/1511518
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key

qcom/bengal-guam-common-overlay.dtsi

@@ -48,6 +48,20 @@
 			bias-pull-up;
 		};
 	};
+	tlmm_gpio_key {
+		gpio_key_active: gpio_key_active {
+			mux {
+				pins = "gpio33";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio33";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+		};
+	};
 };
 
 &soc {
@@ -58,7 +72,7 @@
 		label = "gpio-keys";
 
 		pinctrl-names = "default";
-		pinctrl-0 = <&key_vol_up_default>;
+		pinctrl-0 = <&key_vol_up_default &gpio_key_active>;
 
 		vol_up {
 			label = "volume_up";
@@ -69,6 +83,16 @@
 			debounce-interval = <15>;
 			gpio-key,wakeup;
 		};
+
+		assist_key{
+			label = "assist_key";
+			gpios = <&tlmm 33 0x1>;
+			linux,input-type = <1>;
+			linux,code = <KEY_SEARCH>;
+			debounce-interval = <15>;
+			linux,can-disable;
+			gpio-key,wakeup;
+		};
 	};
 };
 

qcom/bengal-guamp-common-overlay.dtsi

@@ -51,13 +51,30 @@
 	};
 };
 
+&tlmm {
+	tlmm_gpio_key {
+		gpio_key_active: gpio_key_active {
+			mux {
+				pins = "gpio33";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio33";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+		};
+	};
+};
+
 &soc {
 	gpio_keys {
 		compatible = "gpio-keys";
 		label = "gpio-keys";
 
 		pinctrl-names = "default";
-		pinctrl-0 = <&key_vol_up_default>;
+		pinctrl-0 = <&key_vol_up_default &gpio_key_active>;
 
 		vol_up {
 			label = "volume_up";
@@ -68,6 +85,16 @@
 			debounce-interval = <15>;
 			gpio-key,wakeup;
 		};
+
+		assist_key{
+			label = "assist_key";
+			gpios = <&tlmm 33 0x1>;
+			linux,input-type = <1>;
+			linux,code = <KEY_SEARCH>;
+			debounce-interval = <15>;
+			linux,can-disable;
+			gpio-key,wakeup;
+		};
 	};
 };