Documentation/devicetree/bindings/input/ti,nspire-keypad.txt

   1 TI-NSPIRE Keypad
   2
   3 Required properties:
   4 - compatible: Compatible property value should be "ti,nspire-keypad".
   5
   6 - reg: Physical base address of the peripheral and length of memory mapped
   7   region.
   8
   9 - interrupts: The interrupt number for the peripheral.
  10
  11 - scan-interval: How often to scan in us. Based on a APB speed of 33MHz, the
  12         maximum and minimum delay time is ~2000us and ~500us respectively
  13
  14 - row-delay: How long to wait before scanning each row.
  15
  16 - clocks: The clock this peripheral is attached to.
  17
  18 - linux,keymap: The keymap to use
  19         (see Documentation/devicetree/bindings/input/matrix-keymap.txt)
  20
  21 Optional properties:
  22 - active-low: Specify that the keypad is active low (i.e. logical low signifies
  23         a key press).
  24
  25 Example:
  26
  27 input {
  28         compatible = "ti,nspire-keypad";
  29         reg = <0x900E0000 0x1000>;
  30         interrupts = <16>;
  31
  32         scan-interval = <1000>;
  33         row-delay = <200>;
  34
  35         clocks = <&apb_pclk>;
  36
  37         linux,keymap = <
  38         0x0000001c      0x0001001c      0x00040039
  39         0x0005002c      0x00060015      0x0007000b
  40         0x0008000f      0x0100002d      0x01010011
  41         0x0102002f      0x01030004      0x01040016
  42         0x01050014      0x0106001f      0x01070002
  43         0x010a006a      0x02000013      0x02010010
  44         0x02020019      0x02030007      0x02040018
  45         0x02050031      0x02060032      0x02070005
  46         0x02080028      0x0209006c      0x03000026
  47         0x03010025      0x03020024      0x0303000a
  48         0x03040017      0x03050023      0x03060022
  49         0x03070008      0x03080035      0x03090069
  50         0x04000021      0x04010012      0x04020020
  51         0x0404002e      0x04050030      0x0406001e
  52         0x0407000d      0x04080037      0x04090067
  53         0x05010038      0x0502000c      0x0503001b
  54         0x05040034      0x0505001a      0x05060006
  55         0x05080027      0x0509000e      0x050a006f
  56         0x0600002b      0x0602004e      0x06030068
  57         0x06040003      0x0605006d      0x06060009
  58         0x06070001      0x0609000f      0x0708002a
  59         0x0709001d      0x070a0033      >;
  60 };