1*4882a593Smuzhiyun* ST-Microelectronics FingerTip touchscreen controller 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunThe ST-Microelectronics FingerTip device provides a basic touchscreen 4*4882a593Smuzhiyunfunctionality. Along with it the user can enable the touchkey which can work as 5*4882a593Smuzhiyuna basic HOME and BACK key for phones. 6*4882a593Smuzhiyun 7*4882a593SmuzhiyunThe driver supports also hovering as an absolute single touch event with x, y, z 8*4882a593Smuzhiyuncoordinates. 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunRequired properties: 11*4882a593Smuzhiyun- compatible : must be "st,stmfts" 12*4882a593Smuzhiyun- reg : I2C slave address, (e.g. 0x49) 13*4882a593Smuzhiyun- interrupts : interrupt specification 14*4882a593Smuzhiyun- avdd-supply : analogic power supply 15*4882a593Smuzhiyun- vdd-supply : power supply 16*4882a593Smuzhiyun- touchscreen-size-x : see touchscreen.txt 17*4882a593Smuzhiyun- touchscreen-size-y : see touchscreen.txt 18*4882a593Smuzhiyun 19*4882a593SmuzhiyunOptional properties: 20*4882a593Smuzhiyun- touch-key-connected : specifies whether the touchkey feature is connected 21*4882a593Smuzhiyun- ledvdd-supply : power supply to the touch key leds 22*4882a593Smuzhiyun 23*4882a593SmuzhiyunExample: 24*4882a593Smuzhiyun 25*4882a593Smuzhiyuni2c@00000000 { 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun /* ... */ 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun touchscreen@49 { 30*4882a593Smuzhiyun compatible = "st,stmfts"; 31*4882a593Smuzhiyun reg = <0x49>; 32*4882a593Smuzhiyun interrupt-parent = <&gpa1>; 33*4882a593Smuzhiyun interrupts = <1 IRQ_TYPE_NONE>; 34*4882a593Smuzhiyun touchscreen-size-x = <1599>; 35*4882a593Smuzhiyun touchscreen-size-y = <2559>; 36*4882a593Smuzhiyun touch-key-connected; 37*4882a593Smuzhiyun avdd-supply = <&ldo30_reg>; 38*4882a593Smuzhiyun vdd-supply = <&ldo31_reg>; 39*4882a593Smuzhiyun ledvdd-supply = <&ldo33_reg>; 40*4882a593Smuzhiyun }; 41*4882a593Smuzhiyun}; 42