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[karo-tx-linux.git] / Documentation / devicetree / bindings / input / touchscreen / imx6ul_tsc.txt
1 * Freescale i.MX6UL Touch Controller
2
3 Required 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
13 Optional 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
21 Example:
22         tsc: tsc@02040000 {
23                 compatible = "fsl,imx6ul-tsc";
24                 reg = <0x02040000 0x4000>, <0x0219c000 0x4000>;
25                 interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
26                              <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
27                 clocks = <&clks IMX6UL_CLK_IPG>,
28                          <&clks IMX6UL_CLK_ADC2>;
29                 clock-names = "tsc", "adc";
30                 pinctrl-names = "default";
31                 pinctrl-0 = <&pinctrl_tsc>;
32                 xnur-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
33                 measure-delay-time = <0xfff>;
34                 pre-charge-time = <0xffff>;
35                 status = "okay";
36         };