| 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 0 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>; | |
| }; |