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1* ST-Microelectronics FingerTip touchscreen controller
2
3The ST-Microelectronics FingerTip device provides a basic touchscreen
4functionality. Along with it the user can enable the touchkey which can work as
5a basic HOME and BACK key for phones.
6
7The driver supports also hovering as an absolute single touch event with x, y, z
8coordinates.
9
10Required properties:
11- compatible : must be "st,stmfts"
12- reg : I2C slave address, (e.g. 0x49)
13- interrupt-parent : the phandle to the interrupt controller which provides
14 the interrupt
15- interrupts : interrupt specification
16- avdd-supply : analogic power supply
17- vdd-supply : power supply
18- touchscreen-size-x : see touchscreen.txt
19- touchscreen-size-y : see touchscreen.txt
20
21Optional properties:
22- touch-key-connected : specifies whether the touchkey feature is connected
23- ledvdd-supply : power supply to the touch key leds
24
25Example:
26
27i2c@00000000 {
28
29 /* ... */
30
31 touchscreen@49 {
32 compatible = "st,stmfts";
33 reg = <0x49>;
34 interrupt-parent = <&gpa1>;
35 interrupts = <1 IRQ_TYPE_NONE>;
36 touchscreen-size-x = <1599>;
37 touchscreen-size-y = <2559>;
38 touch-key-connected;
39 avdd-supply = <&ldo30_reg>;
40 vdd-supply = <&ldo31_reg>;
41 ledvdd-supply = <&ldo33_reg>;
42 };
43};