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-Azoteq IQS550/572/525 Trackpad/Touchscreen Controller
-
-Required properties:
-
-- compatible			: Must be equal to one of the following:
-				  "azoteq,iqs550"
-				  "azoteq,iqs572"
-				  "azoteq,iqs525"
-
-- reg				: I2C slave address for the device.
-
-- interrupts			: GPIO to which the device's active-high RDY
-				  output is connected (see [0]).
-
-- reset-gpios			: GPIO to which the device's active-low NRST
-				  input is connected (see [1]).
-
-Optional properties:
-
-- touchscreen-min-x		: See [2].
-
-- touchscreen-min-y		: See [2].
-
-- touchscreen-size-x		: See [2]. If this property is omitted, the
-				  maximum x-coordinate is specified by the
-				  device's "X Resolution" register.
-
-- touchscreen-size-y		: See [2]. If this property is omitted, the
-				  maximum y-coordinate is specified by the
-				  device's "Y Resolution" register.
-
-- touchscreen-max-pressure	: See [2]. Pressure is expressed as the sum of
-				  the deltas across all channels impacted by a
-				  touch event. A channel's delta is calculated
-				  as its count value minus a reference, where
-				  the count value is inversely proportional to
-				  the channel's capacitance.
-
-- touchscreen-fuzz-x		: See [2].
-
-- touchscreen-fuzz-y		: See [2].
-
-- touchscreen-fuzz-pressure	: See [2].
-
-- touchscreen-inverted-x	: See [2]. Inversion is applied relative to that
-				  which may already be specified by the device's
-				  FLIP_X and FLIP_Y register fields.
-
-- touchscreen-inverted-y	: See [2]. Inversion is applied relative to that
-				  which may already be specified by the device's
-				  FLIP_X and FLIP_Y register fields.
-
-- touchscreen-swapped-x-y	: See [2]. Swapping is applied relative to that
-				  which may already be specified by the device's
-				  SWITCH_XY_AXIS register field.
-
-[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
-[1]: Documentation/devicetree/bindings/gpio/gpio.txt
-[2]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
-
-Example:
-
-	&i2c1 {
-		/* ... */
-
-		touchscreen@74 {
-			compatible = "azoteq,iqs550";
-			reg = <0x74>;
-			interrupt-parent = <&gpio>;
-			interrupts = <17 4>;
-			reset-gpios = <&gpio 27 1>;
-
-			touchscreen-size-x = <640>;
-			touchscreen-size-y = <480>;
-
-			touchscreen-max-pressure = <16000>;
-		};
-
-		/* ... */
-	};