1*c66ec88fSEmmanuel Vadot* ST Microelectronics STMPE Multi-Functional Device 2*c66ec88fSEmmanuel Vadot 3*c66ec88fSEmmanuel VadotSTMPE is an MFD device which may expose the following inbuilt devices: gpio, 4*c66ec88fSEmmanuel Vadotkeypad, touchscreen, adc, pwm, rotator. 5*c66ec88fSEmmanuel Vadot 6*c66ec88fSEmmanuel VadotRequired properties: 7*c66ec88fSEmmanuel Vadot - compatible : "st,stmpe[610|801|811|1600|1601|2401|2403]" 8*c66ec88fSEmmanuel Vadot - reg : I2C/SPI address of the device 9*c66ec88fSEmmanuel Vadot 10*c66ec88fSEmmanuel VadotOptional properties: 11*c66ec88fSEmmanuel Vadot - interrupts : The interrupt outputs from the controller 12*c66ec88fSEmmanuel Vadot - interrupt-controller : Marks the device node as an interrupt controller 13*c66ec88fSEmmanuel Vadot - wakeup-source : Marks the input device as wakable 14*c66ec88fSEmmanuel Vadot - st,autosleep-timeout : Valid entries (ms); 4, 16, 32, 64, 128, 256, 512 and 1024 15*c66ec88fSEmmanuel Vadot - irq-gpio : If present, which GPIO to use for event IRQ 16*c66ec88fSEmmanuel Vadot 17*c66ec88fSEmmanuel VadotOptional properties for devices with touch and ADC (STMPE811|STMPE610): 18*c66ec88fSEmmanuel Vadot - st,sample-time : ADC conversion time in number of clock. 19*c66ec88fSEmmanuel Vadot 0 -> 36 clocks 4 -> 80 clocks (recommended) 20*c66ec88fSEmmanuel Vadot 1 -> 44 clocks 5 -> 96 clocks 21*c66ec88fSEmmanuel Vadot 2 -> 56 clocks 6 -> 124 clocks 22*c66ec88fSEmmanuel Vadot 3 -> 64 clocks 23*c66ec88fSEmmanuel Vadot - st,mod-12b : ADC Bit mode 24*c66ec88fSEmmanuel Vadot 0 -> 10bit ADC 1 -> 12bit ADC 25*c66ec88fSEmmanuel Vadot - st,ref-sel : ADC reference source 26*c66ec88fSEmmanuel Vadot 0 -> internal 1 -> external 27*c66ec88fSEmmanuel Vadot - st,adc-freq : ADC Clock speed 28*c66ec88fSEmmanuel Vadot 0 -> 1.625 MHz 2 || 3 -> 6.5 MHz 29*c66ec88fSEmmanuel Vadot 1 -> 3.25 MHz 30*c66ec88fSEmmanuel Vadot 31*c66ec88fSEmmanuel VadotExample: 32*c66ec88fSEmmanuel Vadot 33*c66ec88fSEmmanuel Vadot stmpe1601: stmpe1601@40 { 34*c66ec88fSEmmanuel Vadot compatible = "st,stmpe1601"; 35*c66ec88fSEmmanuel Vadot reg = <0x40>; 36*c66ec88fSEmmanuel Vadot interrupts = <26 0x4>; 37*c66ec88fSEmmanuel Vadot interrupt-parent = <&gpio6>; 38*c66ec88fSEmmanuel Vadot interrupt-controller; 39*c66ec88fSEmmanuel Vadot 40*c66ec88fSEmmanuel Vadot wakeup-source; 41*c66ec88fSEmmanuel Vadot st,autosleep-timeout = <1024>; 42*c66ec88fSEmmanuel Vadot }; 43