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