* ST-Microelectronics FingerTip touchscreen controller
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The ST-Microelectronics FingerTip device provides a basic touchscreen
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functionality. Along with it the user can enable the touchkey which can work as
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a basic HOME and BACK key for phones.
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The driver supports also hovering as an absolute single touch event with x, y, z
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coordinates.
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Required properties:
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- compatible : must be "st,stmfts"
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- reg : I2C slave address, (e.g. 0x49)
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- interrupts : interrupt specification
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- avdd-supply : analogic power supply
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- vdd-supply : power supply
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- touchscreen-size-x : see touchscreen.txt
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- touchscreen-size-y : see touchscreen.txt
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Optional properties:
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- touch-key-connected : specifies whether the touchkey feature is connected
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- ledvdd-supply : power supply to the touch key leds
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Example:
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i2c@00000000 {
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/* ... */
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touchscreen@49 {
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compatible = "st,stmfts";
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reg = <0x49>;
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interrupt-parent = <&gpa1>;
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interrupts = <1 IRQ_TYPE_NONE>;
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touchscreen-size-x = <1599>;
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touchscreen-size-y = <2559>;
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touch-key-connected;
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avdd-supply = <&ldo30_reg>;
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vdd-supply = <&ldo31_reg>;
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ledvdd-supply = <&ldo33_reg>;
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};
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};
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