Documentation/devicetree/bindings/input/touchscreen/gt9xx/gt9xx.txt

Goodix GT9xx series touch controller

Required properties:

 - compatible		: Should be "goodix,gt9xx"
 - reg			: I2C slave address of the device.
 - interrupt-parent	: Parent of interrupt.
 - interrupts		: Configuration of touch panel controller interrupt
				GPIO.
 - goodix,family-id	: Family identification of the controller.
 - interrupt-gpios	: Interrupt gpio which is to provide interrupts to
				host, same as "interrupts" node.
 - reset-gpios		: Reset gpio to control the reset of chip.
 - goodix,display-coords	: Display coordinates in pixels. It is a four
				tuple consisting of min x, min y, max x and
				max y values.

Optional properties:

 - avdd-supply		: Power supply needed to power up the device, this is
				for fixed voltage external regulator.
 - vdd-supply		: Power supply needed to power up the device, when use
				external regulator, do not add this property.
 - vcc-i2c-supply	: Power source required to power up i2c bus.
				GT9xx series can provide 1.8V from internal
				LDO, add this properties base on hardware
				design.
 - goodix,panel-coords	: Panel coordinates for the chip in pixels.
				It is a four tuple consisting of min x,
				min y, max x and max y values.
 - goodix,i2c-pull-up	: To specify pull up is required.
 - goodix,no-force-update	: To specify force update is allowed.
 - goodix,button-map	: Button map of key codes. The number of key codes
				depend on panel.
 - goodix,cfg-data	: Touchpanel controller configuration data, ask vendor
				to provide that. Default configuration will be
				used if this property is not present.

Example:
i2c@f9927000 {
		goodix@5d {
			compatible = "goodix,gt9xx";
			reg = <0x5d>;
			interrupt-parent = <&msmgpio>;
			interrupts = <17 0x2008>;
			reset-gpios = <&msmgpio 16 0x00>;
			interrupt-gpios = <&msmgpio 17 0x00>;
			avdd-supply = <&tp_power>;
			goodix,panel-coords = <0 0 720 1200>;
			goodix,display-coords = <0 0 720 1080>;
			goodix,button-map= <158 102 139>;
			goodix,family-id = <0x0>;
			goodix,cfg-data = [
		41 D0 02 00 05 0A 05 01 01 08
		12 58 50 41 03 05 00 00 00 00
		00 00 00 00 00 00 00 8C 2E 0E
		28 24 73 13 00 00 00 83 03 1D
		40 02 00 00 00 03 64 32 00 00
		00 1A 38 94 C0 02 00 00 00 04
		9E 1C 00 8D 20 00 7A 26 00 6D
		2C 00 60 34 00 60 10 38 68 00
		F0 50 35 FF FF 27 00 00 00 00
		00 01 1B 14 0C 14 00 00 01 00
		00 00 00 00 00 00 00 00 00 00
		00 00 02 04 06 08 0A 0C 0E 10
		12 14 16 18 1A 1C FF FF FF FF
		FF FF FF FF FF FF FF FF FF FF
		FF FF 00 02 04 06 08 0A 0C 0F
		10 12 13 14 16 18 1C 1D 1E 1F
		20 21 22 24 26 28 29 2A FF FF
		FF FF FF FF FF FF FF 22 22 22
		22 22 22 FF 07 01];
		};
};