1* ST Microelectronics STMPE Multi-Functional Device 2 3STMPE is an MFD device which may expose the following inbuilt devices: gpio, 4keypad, touchscreen, adc, pwm, rotator. 5 6Required properties: 7 - compatible : "st,stmpe[610|801|811|1600|1601|2401|2403]" 8 - reg : I2C/SPI address of the device 9 10Optional 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 17Optional 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 31Example: 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 }; 43