Documentation/devicetree/bindings/mfd/stmpe.txt

   1 * ST Microelectronics STMPE Multi-Functional Device
   2
   3 STMPE is an MFD device which may expose the following inbuilt devices: gpio,
   4 keypad, touchscreen, adc, pwm, rotator.
   5
   6 Required properties:
   7  - compatible                   : "st,stmpe[610|801|811|1600|1601|2401|2403]"
   8  - reg                          : I2C/SPI address of the device
   9
  10 Optional properties:
  11  - interrupts                   : The interrupt outputs from the controller
  12  - interrupt-controller         : Marks the device node as an interrupt controller
  13  - wakeup-source                : Marks the input device as wakable
  14  - st,autosleep-timeout         : Valid entries (ms); 4, 16, 32, 64, 128, 256, 512 and 1024
  15  - irq-gpio                     : If present, which GPIO to use for event IRQ
  16
  17 Optional properties for devices with touch and ADC (STMPE811|STMPE610):
  18  - st,sample-time               : ADC conversion time in number of clock.
  19                                         0 -> 36 clocks          4 -> 80 clocks (recommended)
  20                                         1 -> 44 clocks          5 -> 96 clocks
  21                                         2 -> 56 clocks          6 -> 124 clocks
  22                                         3 -> 64 clocks
  23  - st,mod-12b                   : ADC Bit mode
  24                                         0 -> 10bit ADC          1 -> 12bit ADC
  25  - st,ref-sel                   : ADC reference source
  26                                         0 -> internal           1 -> external
  27  - st,adc-freq                  : ADC Clock speed
  28                                         0 -> 1.625 MHz          2 || 3 -> 6.5 MHz
  29                                         1 -> 3.25 MHz
  30
  31 Example:
  32
  33         stmpe1601: stmpe1601@40 {
  34                 compatible = "st,stmpe1601";
  35                 reg = <0x40>;
  36                 interrupts = <26 0x4>;
  37                 interrupt-parent = <&gpio6>;
  38                 interrupt-controller;
  39
  40                 wakeup-source;
  41                 st,autosleep-timeout = <1024>;
  42         };