1 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/overlays/goodix-overlay.dts b/arch/arm/boot/dts/overlays/goodix-overlay.dts
new file mode 100644
index 000000000000..8571527de49a
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/goodix-overlay.dts
@@ -0,0 +1,46 @@
+// Device tree overlay for I2C connected Goodix gt9271 multiple touch controller
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target = <&gpio>;
+		__overlay__ {
+			goodix_pins: goodix_pins {
+				brcm,pins = <4 17>; // interrupt and reset
+				brcm,function = <0 0>; // in
+				brcm,pull = <2 2>; // pull-up
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			gt9271: gt9271@14 {
+				compatible = "goodix,gt9271";
+				reg = <0x14>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&goodix_pins>;
+				interrupt-parent = <&gpio>;
+				interrupts = <4 2>; // high-to-low edge triggered
+				irq-gpios = <&gpio 4 0>; // Pin7 on GPIO header
+				reset-gpios = <&gpio 17 0>; // Pin11 on GPIO header
+			};
+		};
+	};
+
+	__overrides__ {
+		interrupt = <&goodix_pins>,"brcm,pins:0",
+			<&gt9271>,"interrupts:0",
+			<&gt9271>,"irq-gpios:4";
+		reset = <&goodix_pins>,"brcm,pins:4",
+			<&gt9271>,"reset-gpios:4";
+	};
+};