mirror of https://gitee.com/openkylin/linux.git
66 lines
2.2 KiB
Plaintext
66 lines
2.2 KiB
Plaintext
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"
|
|
FT5506EEG 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"
|
|
or: "edt,edt-ft5506"
|
|
or: "focaltech,ft6236"
|
|
|
|
- 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.
|
|
- touchscreen-size-x : See touchscreen.txt
|
|
- touchscreen-size-y : See touchscreen.txt
|
|
- touchscreen-fuzz-x : See touchscreen.txt
|
|
- touchscreen-fuzz-y : See touchscreen.txt
|
|
- touchscreen-inverted-x : See touchscreen.txt
|
|
- touchscreen-inverted-y : See touchscreen.txt
|
|
- touchscreen-swapped-x-y : See touchscreen.txt
|
|
|
|
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 IRQ_TYPE_EDGE_FALLING>;
|
|
reset-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
|
|
wake-gpios = <&gpio4 9 GPIO_ACTIVE_HIGH>;
|
|
};
|