1Elantech I2C Touchscreen
2
3Required properties:
4- compatible: must be "elan,ekth3500".
5- reg: I2C address of the chip.
6- interrupt-parent: a phandle for the interrupt controller (see interrupt
7  binding[0]).
8- interrupts: interrupt to which the chip is connected (see interrupt
9  binding[0]).
10
11Optional properties:
12- wakeup-source: touchscreen can be used as a wakeup source.
13- pinctrl-names: should be "default" (see pinctrl binding [1]).
14- pinctrl-0: a phandle pointing to the pin settings for the device (see
15  pinctrl binding [1]).
16- reset-gpios: reset gpio the chip is connected to.
17- vcc33-supply: a phandle for the regulator supplying 3.3V power.
18- vccio-supply: a phandle for the regulator supplying IO power.
19
20[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
21[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
22
23Example:
24	&i2c1 {
25		/* ... */
26
27		touchscreen@10 {
28			compatible = "elan,ekth3500";
29			reg = <0x10>;
30			interrupt-parent = <&gpio4>;
31			interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
32			wakeup-source;
33		};
34
35		/* ... */
36	};
37