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* Texas Instruments tsc2007 touchscreen controller
Required properties:
- compatible: must be "ti,tsc2007".
- reg: I2C address of the chip.
- ti,x-plate-ohms: X-plate resistance in ohms.
Optional properties:
- gpios: the interrupt gpio the chip is connected to (trough the penirq pin).
The penirq pin goes to low when the panel is touched.
(see GPIO binding[1] for more details).
- interrupt-parent: the phandle for the gpio controller
(see interrupt binding[0]).
- interrupts: (gpio) interrupt to which the chip is connected
(see interrupt binding[0]).
- ti,max-rt: maximum pressure.
- ti,fuzzx: specifies the absolute input fuzz x value.
If set, it will permit noise in the data up to +- the value given to the fuzz
parameter, that is used to filter noise from the event stream.
- ti,fuzzy: specifies the absolute input fuzz y value.
- ti,fuzzz: specifies the absolute input fuzz z value.
- ti,poll-period: how much time to wait (in milliseconds) before reading again the
values from the tsc2007.
[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
[1]: Documentation/devicetree/bindings/gpio/gpio.txt
Example:
&i2c1 {
/* ... */
tsc2007@49 {
compatible = "ti,tsc2007";
reg = <0x49>;
interrupt-parent = <&gpio4>;
interrupts = <0x0 0x8>;
gpios = <&gpio4 0 0>;
ti,x-plate-ohms = <180>;
};
/* ... */
};
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