Bindings/mfd/tc3589x.txt

   1 * Toshiba TC3589x multi-purpose expander
   2
   3 The Toshiba TC3589x series are I2C-based MFD devices which may expose the
   4 following built-in devices: gpio, keypad, rotator (vibrator), PWM (for
   5 e.g. LEDs or vibrators) The included models are:
   6
   7 - TC35890
   8 - TC35892
   9 - TC35893
  10 - TC35894
  11 - TC35895
  12 - TC35896
  13
  14 Required properties:
  15  - compatible : must be "toshiba,tc35890", "toshiba,tc35892", "toshiba,tc35893",
  16    "toshiba,tc35894", "toshiba,tc35895" or "toshiba,tc35896"
  17  - reg : I2C address of the device
  18  - interrupts : the interrupt on the parent the controller is connected to
  19  - interrupt-controller : marks the device node as an interrupt controller
  20  - #interrupt-cells : should be <1>, the first cell is the IRQ offset on this
  21    TC3589x interrupt controller.
  22
  23 Optional nodes:
  24
  25 - GPIO
  26   This GPIO module inside the TC3589x has 24 (TC35890, TC35892) or 20
  27   (other models) GPIO lines.
  28  - compatible : must be "toshiba,tc3589x-gpio"
  29  - interrupts : interrupt on the parent, which must be the tc3589x MFD device
  30  - interrupt-controller : marks the device node as an interrupt controller
  31  - #interrupt-cells : should be <2>, the first cell is the IRQ offset on this
  32    TC3589x GPIO interrupt controller, the second cell is the interrupt flags
  33    in accordance with <dt-bindings/interrupt-controller/irq.h>. The following
  34    flags are valid:
  35    - IRQ_TYPE_LEVEL_LOW
  36    - IRQ_TYPE_LEVEL_HIGH
  37    - IRQ_TYPE_EDGE_RISING
  38    - IRQ_TYPE_EDGE_FALLING
  39    - IRQ_TYPE_EDGE_BOTH
  40  - gpio-controller : marks the device node as a GPIO controller
  41  - #gpio-cells : should be <2>, the first cell is the GPIO offset on this
  42    GPIO controller, the second cell is the flags.
  43
  44 - Keypad
  45   This keypad is the same on all variants, supporting up to 96 different
  46   keys. The linux-specific properties are modeled on those already existing
  47   in other input drivers.
  48  - compatible : must be "toshiba,tc3589x-keypad"
  49  - debounce-delay-ms : debounce interval in milliseconds
  50  - keypad,num-rows : number of rows in the matrix, see
  51    bindings/input/matrix-keymap.txt
  52  - keypad,num-columns : number of columns in the matrix, see
  53    bindings/input/matrix-keymap.txt
  54  - linux,keymap: the definition can be found in
  55    bindings/input/matrix-keymap.txt
  56  - linux,no-autorepeat: do no enable autorepeat feature.
  57  - wakeup-source: use any event on keypad as wakeup event.
  58                   (Legacy property supported: "linux,wakeup")
  59
  60 Example:
  61
  62 tc35893@44 {
  63         compatible = "toshiba,tc35893";
  64         reg = <0x44>;
  65         interrupt-parent = <&gpio6>;
  66         interrupts = <26 IRQ_TYPE_EDGE_RISING>;
  67
  68         interrupt-controller;
  69         #interrupt-cells = <1>;
  70
  71         tc3589x_gpio {
  72                 compatible = "toshiba,tc3589x-gpio";
  73                 interrupts = <0>;
  74
  75                 interrupt-controller;
  76                 #interrupt-cells = <2>;
  77                 gpio-controller;
  78                 #gpio-cells = <2>;
  79         };
  80         tc3589x_keypad {
  81                 compatible = "toshiba,tc3589x-keypad";
  82                 interrupts = <6>;
  83                 debounce-delay-ms = <4>;
  84                 keypad,num-columns = <8>;
  85                 keypad,num-rows = <8>;
  86                 linux,no-autorepeat;
  87                 linux,keymap = <0x0301006b
  88                                 0x04010066
  89                                 0x06040072
  90                                 0x040200d7
  91                                 0x0303006a
  92                                 0x0205000e
  93                                 0x0607008b
  94                                 0x0500001c
  95                                 0x0403000b
  96                                 0x03040034
  97                                 0x05020067
  98                                 0x0305006c
  99                                 0x040500e7
 100                                 0x0005009e
 101                                 0x06020073
 102                                 0x01030039
 103                                 0x07060069
 104                                 0x050500d9>;
 105                 wakeup-source;
 106         };
 107 };