54 lines
1.9 KiB
Plaintext
54 lines
1.9 KiB
Plaintext
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FocalTech touch controller
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The focaltech controller is connected to host processor
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via i2c. The controller generates interrupts when the
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user touches the panel. The host controller is expected
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to read the touch coordinates over i2c and pass the coordinates
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to the rest of the system.
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Required properties:
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- compatible : should be "focaltech,5x06"
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- reg : i2c slave address of the device
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- interrupt-parent : parent of interrupt
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- interrupts : touch sample interrupt to indicate presense or release
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of fingers on the panel.
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- vdd-supply : Power supply needed to power up the device
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- vcc_i2c-supply : Power source required to power up i2c bus
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- focaltech,family-id : family identification of the controller
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- focaltech,irq-gpio : irq gpio which is to provide interrupts to host,
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same as "interrupts" node. It will also
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contain active low or active high information.
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- focaltech,reset-gpio : reset gpio to control the reset of chip
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- focaltech,display-coords : display coordinates in pixels. It is a four
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tuple consisting of min x, min y, max x and
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max y values
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Optional properties:
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- focaltech,panel-coords : panel coordinates for the chip in pixels.
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It is a four tuple consisting of min x,
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min y, max x and max y values
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- focaltech,i2c-pull-up : to specify pull up is required
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- focaltech,no-force-update : to specify force update is allowed
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- focaltech,button-map : button map of key codes. The number
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of key codes depend on panel
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Example:
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i2c@f9924000 {
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ft5x06_ts@38 {
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compatible = "focaltech,5x06";
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reg = <0x38>;
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interrupt-parent = <&msmgpio>;
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interrupts = <61 0x2>;
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vdd-supply = <&pm8941_l22>;
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vcc_i2c-supply = <&pm8941_s3>;
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focaltech,reset-gpio = <&msmgpio 60 0x00>;
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focaltech,irq-gpio = <&msmgpio 61 0x00>;
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focaltech,panel-coords = <0 0 480 800>;
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focaltech,display-coords = <0 0 480 800>;
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focaltech,button-map= <158 102 139 217>;
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focaltech,family-id = <0x0a>;
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};
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};
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