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- FocalTech EDT-FT5x06 Polytouch driver
- =====================================
- There are 3 variants of the chip for various touch panel sizes
- FT5206GE1 2.8" .. 3.8"
- FT5306DE4 4.3" .. 7"
- FT5406EE8 7" .. 8.9"
- The software interface is identical for all those chips, so that
- currently there is no need for the driver to distinguish between the
- different chips. Nevertheless distinct compatible strings are used so
- that a distinction can be added if necessary without changing the DT
- bindings.
- Required properties:
- - compatible: "edt,edt-ft5206"
- or: "edt,edt-ft5306"
- or: "edt,edt-ft5406"
- - reg: I2C slave address of the chip (0x38)
- - interrupt-parent: a phandle pointing to the interrupt controller
- serving the interrupt for this chip
- - interrupts: interrupt specification for the touchdetect
- interrupt
- Optional properties:
- - reset-gpios: GPIO specification for the RESET input
- - wake-gpios: GPIO specification for the WAKE input
- - pinctrl-names: should be "default"
- - pinctrl-0: a phandle pointing to the pin settings for the
- control gpios
- - threshold: allows setting the "click"-threshold in the range
- from 20 to 80.
- - gain: allows setting the sensitivity in the range from 0 to
- 31. Note that lower values indicate higher
- sensitivity.
- - offset: allows setting the edge compensation in the range from
- 0 to 31.
- Example:
- polytouch: edt-ft5x06@38 {
- compatible = "edt,edt-ft5406", "edt,edt-ft5x06";
- reg = <0x38>;
- pinctrl-names = "default";
- pinctrl-0 = <&edt_ft5x06_pins>;
- interrupt-parent = <&gpio2>;
- interrupts = <5 0>;
- reset-gpios = <&gpio2 6 1>;
- wake-gpios = <&gpio4 9 0>;
- };
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