Documentation/devicetree/bindings/input/touchscreen/sun4i.txt

   1 sun4i resistive touchscreen controller
   2 --------------------------------------
   3
   4 Required properties:
   5  - compatible: "allwinner,sun4i-a10-ts", "allwinner,sun5i-a13-ts" or
   6    "allwinner,sun6i-a31-ts"
   7  - reg: mmio address range of the chip
   8  - interrupts: interrupt to which the chip is connected
   9  - #thermal-sensor-cells: shall be 0
  10
  11 Optional properties:
  12  - allwinner,ts-attached         : boolean indicating that an actual touchscreen
  13                                    is attached to the controller
  14  - allwinner,tp-sensitive-adjust : integer (4 bits)
  15                                    adjust sensitivity of pen down detection
  16                                    between 0 (least sensitive) and 15
  17                                    (defaults to 15)
  18  - allwinner,filter-type         : integer (2 bits)
  19                                    select median and averaging filter
  20                                    samples used for median / averaging filter
  21                                    0: 4/2
  22                                    1: 5/3
  23                                    2: 8/4
  24                                    3: 16/8
  25                                    (defaults to 1)
  26
  27 Example:
  28
  29         rtp: rtp@01c25000 {
  30                 compatible = "allwinner,sun4i-a10-ts";
  31                 reg = <0x01c25000 0x100>;
  32                 interrupts = <29>;
  33                 allwinner,ts-attached;
  34                 #thermal-sensor-cells = <0>;
  35                 /* sensitive/noisy touch panel */
  36                 allwinner,tp-sensitive-adjust = <0>;
  37                 allwinner,filter-type = <3>;
  38         };