Documentation/devicetree/bindings/input/pxa27x-keypad.txt

   1 * Marvell PXA Keypad controller
   2
   3 Required Properties
   4 - compatible : should be "marvell,pxa27x-keypad"
   5 - reg : Address and length of the register set for the device
   6 - interrupts : The interrupt for the keypad controller
   7 - marvell,debounce-interval : How long time the key will be
   8   recognized when it is pressed. It is a u32 value, and bit[31:16]
   9   is debounce interval for direct key and bit[15:0] is debounce
  10   interval for matrix key. The value is in binary number of 2ms
  11
  12 Optional Properties For Matrix Keyes
  13 Please refer to matrix-keymap.txt
  14
  15 Optional Properties for Direct Keyes
  16 - marvell,direct-key-count : How many direct keyes are used.
  17 - marvell,direct-key-mask : The mask indicates which keyes
  18   are used. If bit[X] of the mask is set, the direct key X
  19   is used.
  20 - marvell,direct-key-low-active : Direct key status register
  21   tells the level of pins that connects to the direct keyes.
  22   When this property is set, it means that when the pin level
  23   is low, the key is pressed(active).
  24 - marvell,direct-key-map : It is a u16 array. Each item indicates
  25   the linux key-code for the direct key.
  26
  27 Optional Properties For Rotary
  28 - marvell,rotary0 : It is a u32 value. Bit[31:16] is the
  29   linux key-code for rotary up. Bit[15:0] is the linux key-code
  30   for rotary down. It is for rotary 0.
  31 - marvell,rotary1 : Same as marvell,rotary0. It is for rotary 1.
  32 - marvell,rotary-rel-key : When rotary is used for relative axes
  33   in the device, the value indicates the key-code for relative
  34   axes measurement in the device. It is a u32 value. Bit[31:16]
  35   is for rotary 1, and Bit[15:0] is for rotary 0.
  36
  37 Examples:
  38         keypad: keypad@d4012000 {
  39                 keypad,num-rows = <3>;
  40                 keypad,num-columns = <5>;
  41                 linux,keymap = <0x0000000e      /* KEY_BACKSPACE */
  42                                 0x0001006b      /* KEY_END */
  43                                 0x00020061      /* KEY_RIGHTCTRL */
  44                                 0x0003000b      /* KEY_0 */
  45                                 0x00040002      /* KEY_1 */
  46                                 0x0100008b      /* KEY_MENU */
  47                                 0x01010066      /* KEY_HOME */
  48                                 0x010200e7      /* KEY_SEND */
  49                                 0x01030009      /* KEY_8 */
  50                                 0x0104000a      /* KEY_9 */
  51                                 0x02000160      /* KEY_OK */
  52                                 0x02010003      /* KEY_2 */
  53                                 0x02020004      /* KEY_3 */
  54                                 0x02030005      /* KEY_4 */
  55                                 0x02040006>;    /* KEY_5 */
  56                 marvell,rotary0 = <0x006c0067>; /* KEY_UP & KEY_DOWN */
  57                 marvell,direct-key-count = <1>;
  58                 marvell,direct-key-map = <0x001c>;
  59                 marvell,debounce-interval = <0x001e001e>;
  60         };