Documentation/devicetree/bindings/input/qcom,pm8xxx-keypad.txt

   1 Qualcomm PM8xxx PMIC Keypad
   2
   3 PROPERTIES
   4
   5 - compatible:
   6         Usage: required
   7         Value type: <string>
   8         Definition: must be one of:
   9                     "qcom,pm8058-keypad"
  10                     "qcom,pm8921-keypad"
  11
  12 - reg:
  13         Usage: required
  14         Value type: <prop-encoded-array>
  15         Definition: address of keypad control register
  16
  17 - interrupts:
  18         Usage: required
  19         Value type: <prop-encoded-array>
  20         Definition: the first interrupt specifies the key sense interrupt
  21                     and the second interrupt specifies the key stuck interrupt.
  22                     The format of the specifier is defined by the binding
  23                     document describing the node's interrupt parent.
  24
  25 - linux,keymap:
  26         Usage: required
  27         Value type: <prop-encoded-array>
  28         Definition: the linux keymap. More information can be found in
  29                     input/matrix-keymap.txt.
  30
  31 - linux,keypad-no-autorepeat:
  32         Usage: optional
  33         Value type: <bool>
  34         Definition: don't enable autorepeat feature.
  35
  36 - wakeup-source:
  37         Usage: optional
  38         Value type: <bool>
  39         Definition: use any event on keypad as wakeup event.
  40                     (Legacy property supported: "linux,keypad-wakeup")
  41
  42 - keypad,num-rows:
  43         Usage: required
  44         Value type: <u32>
  45         Definition: number of rows in the keymap. More information can be found
  46                     in input/matrix-keymap.txt.
  47
  48 - keypad,num-columns:
  49         Usage: required
  50         Value type: <u32>
  51         Definition: number of columns in the keymap. More information can be
  52                     found in input/matrix-keymap.txt.
  53
  54 - debounce:
  55         Usage: optional
  56         Value type: <u32>
  57         Definition: time in microseconds that key must be pressed or release
  58                     for key sense interrupt to trigger.
  59
  60 - scan-delay:
  61         Usage: optional
  62         Value type: <u32>
  63         Definition: time in microseconds to pause between successive scans
  64                     of the matrix array.
  65
  66 - row-hold:
  67         Usage: optional
  68         Value type: <u32>
  69         Definition: time in nanoseconds to pause between scans of each row in
  70                     the matrix array.
  71
  72 EXAMPLE
  73
  74         keypad@148 {
  75                 compatible = "qcom,pm8921-keypad";
  76                 reg = <0x148>;
  77                 interrupt-parent = <&pmicintc>;
  78                 interrupts = <74 1>, <75 1>;
  79                 linux,keymap = <
  80                         MATRIX_KEY(0, 0, KEY_VOLUMEUP)
  81                         MATRIX_KEY(0, 1, KEY_VOLUMEDOWN)
  82                         MATRIX_KEY(0, 2, KEY_CAMERA_FOCUS)
  83                         MATRIX_KEY(0, 3, KEY_CAMERA)
  84                         >;
  85                 keypad,num-rows = <1>;
  86                 keypad,num-columns = <5>;
  87                 debounce = <15>;
  88                 scan-delay = <32>;
  89                 row-hold = <91500>;
  90         };