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 - touchscreen-average-samples: Number of data samples which are averaged for
  21   each read. Valid values are 1, 4, 8, 16 and 32.
  22
  23 Example:
  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         };