1* Freescale i.MX6UL Touch Controller
2
3Required properties:
4- compatible: must be "fsl,imx6ul-tsc".
5- reg: this touch controller address and the ADC2 address.
6- interrupts: the interrupt of this touch controller and ADC2.
7- clocks: the root clock of touch controller and ADC2.
8- clock-names; must be "tsc" and "adc".
9- xnur-gpio: the X- gpio this controller connect to.
10  This xnur-gpio returns to low once the finger leave the touch screen (The
11  last touch event the touch controller capture).
12
13Optional properties:
14- measure-delay-time: the value of measure delay time.
15  Before X-axis or Y-axis measurement, the screen need some time before
16  even potential distribution ready.
17  This value depends on the touch screen.
18- pre-charge-time: the touch screen need some time to precharge.
19  This value depends on the touch screen.
20- touchscreen-average-samples: Number of data samples which are averaged for
21  each read. Valid values are 1, 4, 8, 16 and 32.
22
23Example:
24	tsc: tsc@2040000 {
25		compatible = "fsl,imx6ul-tsc";
26		reg = <0x02040000 0x4000>, <0x0219c000 0x4000>;
27		interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
28			     <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
29		clocks = <&clks IMX6UL_CLK_IPG>,
30			 <&clks IMX6UL_CLK_ADC2>;
31		clock-names = "tsc", "adc";
32		pinctrl-names = "default";
33		pinctrl-0 = <&pinctrl_tsc>;
34		xnur-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
35		measure-delay-time = <0xfff>;
36		pre-charge-time = <0xffff>;
37		touchscreen-average-samples = <32>;
38	};
39