1* GSL 1680 touchscreen controller
2
3Required properties:
4- compatible		  : Must be one of the following, depending on the model:
5			    "silead,gsl1680"
6			    "silead,gsl1688"
7			    "silead,gsl3670"
8			    "silead,gsl3675"
9			    "silead,gsl3692"
10- reg			  : I2C slave address of the chip (0x40)
11- interrupts		  : interrupt specification for the gsl1680 interrupt
12- power-gpios		  : Specification for the pin connected to the gsl1680's
13			    shutdown input. This needs to be driven high to take the
14			    gsl1680 out of its low power state
15- touchscreen-size-x	  : See touchscreen.txt
16- touchscreen-size-y	  : See touchscreen.txt
17
18Optional properties:
19- firmware-name		  : File basename (string) for board specific firmware
20- touchscreen-inverted-x  : See touchscreen.txt
21- touchscreen-inverted-y  : See touchscreen.txt
22- touchscreen-swapped-x-y : See touchscreen.txt
23- silead,max-fingers	  : maximum number of fingers the touchscreen can detect
24- silead,home-button	  : Boolean, set to true on devices which have a
25			    capacitive home-button build into the touchscreen
26- vddio-supply		  : regulator phandle for controller VDDIO
27- avdd-supply		  : regulator phandle for controller AVDD
28
29Example:
30
31i2c@00000000 {
32	gsl1680: touchscreen@40 {
33		compatible = "silead,gsl1680";
34		reg = <0x40>;
35		interrupt-parent = <&pio>;
36		interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
37		power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>;
38		touchscreen-size-x = <480>;
39		touchscreen-size-y = <800>;
40		touchscreen-inverted-x;
41		touchscreen-swapped-x-y;
42		silead,max-fingers = <5>;
43	};
44};
45