1*4882a593SmuzhiyunElantech I2C Touchpad 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunRequired properties: 4*4882a593Smuzhiyun- compatible: must be "elan,ekth3000". 5*4882a593Smuzhiyun- reg: I2C address of the chip. 6*4882a593Smuzhiyun- interrupts: interrupt to which the chip is connected (see interrupt 7*4882a593Smuzhiyun binding[0]). 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunOptional properties: 10*4882a593Smuzhiyun- wakeup-source: touchpad can be used as a wakeup source. 11*4882a593Smuzhiyun- pinctrl-names: should be "default" (see pinctrl binding [1]). 12*4882a593Smuzhiyun- pinctrl-0: a phandle pointing to the pin settings for the device (see 13*4882a593Smuzhiyun pinctrl binding [1]). 14*4882a593Smuzhiyun- vcc-supply: a phandle for the regulator supplying 3.3V power. 15*4882a593Smuzhiyun- elan,trackpoint: touchpad can support a trackpoint (boolean) 16*4882a593Smuzhiyun- elan,clickpad: touchpad is a clickpad (the entire surface is a button) 17*4882a593Smuzhiyun- elan,middle-button: touchpad has a physical middle button 18*4882a593Smuzhiyun- elan,x_traces: number of antennas on the x axis 19*4882a593Smuzhiyun- elan,y_traces: number of antennas on the y axis 20*4882a593Smuzhiyun- some generic touchscreen properties [2]: 21*4882a593Smuzhiyun * touchscreen-size-x 22*4882a593Smuzhiyun * touchscreen-size-y 23*4882a593Smuzhiyun * touchscreen-x-mm 24*4882a593Smuzhiyun * touchscreen-y-mm 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt 28*4882a593Smuzhiyun[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt 29*4882a593Smuzhiyun[2]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt 30*4882a593Smuzhiyun 31*4882a593SmuzhiyunExample: 32*4882a593Smuzhiyun &i2c1 { 33*4882a593Smuzhiyun /* ... */ 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun touchpad@15 { 36*4882a593Smuzhiyun compatible = "elan,ekth3000"; 37*4882a593Smuzhiyun reg = <0x15>; 38*4882a593Smuzhiyun interrupt-parent = <&gpio4>; 39*4882a593Smuzhiyun interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>; 40*4882a593Smuzhiyun wakeup-source; 41*4882a593Smuzhiyun }; 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun /* ... */ 44*4882a593Smuzhiyun }; 45