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+* GSL 1680 touchscreen controller
+
+Required properties:
+- compatible : Must be one of the following, depending on the model:
+ "silead,gsl1680"
+ "silead,gsl1688"
+ "silead,gsl3670"
+ "silead,gsl3675"
+ "silead,gsl3692"
+- reg : I2C slave address of the chip (0x40)
+- interrupts : interrupt specification for the gsl1680 interrupt
+- power-gpios : Specification for the pin connected to the gsl1680's
+ shutdown input. This needs to be driven high to take the
+ gsl1680 out of its low power state
+- touchscreen-size-x : See touchscreen.txt
+- touchscreen-size-y : See touchscreen.txt
+
+Optional properties:
+- firmware-name : File basename (string) for board specific firmware
+- touchscreen-inverted-x : See touchscreen.txt
+- touchscreen-inverted-y : See touchscreen.txt
+- touchscreen-swapped-x-y : See touchscreen.txt
+- silead,max-fingers : maximum number of fingers the touchscreen can detect
+- silead,home-button : Boolean, set to true on devices which have a
+ capacitive home-button build into the touchscreen
+- vddio-supply : regulator phandle for controller VDDIO
+- avdd-supply : regulator phandle for controller AVDD
+
+Example:
+
+i2c@00000000 {
+ gsl1680: touchscreen@40 {
+ compatible = "silead,gsl1680";
+ reg = <0x40>;
+ interrupt-parent = <&pio>;
+ interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
+ power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>;
+ touchscreen-size-x = <480>;
+ touchscreen-size-y = <800>;
+ touchscreen-inverted-x;
+ touchscreen-swapped-x-y;
+ silead,max-fingers = <5>;
+ };
+};