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