1 * Texas Instruments tsc2007 touchscreen controller
2
3 Required properties:
4 - compatible: must be "ti,tsc2007".
5 - reg: I2C address of the chip.
6 - ti,x-plate-ohms: X-plate resistance in ohms.
7
8 Optional properties:
9 - gpios: the interrupt gpio the chip is connected to (through the penirq pin).
10 The penirq pin goes to low when the panel is touched.
11 (see GPIO binding[1] for more details).
12 - interrupts: (gpio) interrupt to which the chip is connected
13 (see interrupt binding[0]).
14 - ti,max-rt: maximum pressure.
15 - ti,fuzzx: specifies the absolute input fuzz x value.
16 If set, it will permit noise in the data up to +- the value given to the fuzz
17 parameter, that is used to filter noise from the event stream.
18 - ti,fuzzy: specifies the absolute input fuzz y value.
19 - ti,fuzzz: specifies the absolute input fuzz z value.
20 - ti,poll-period: how much time to wait (in milliseconds) before reading again the
21 values from the tsc2007.
22
23 [0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
24 [1]: Documentation/devicetree/bindings/gpio/gpio.txt
25
26 Example:
27 &i2c1 {
28 /* ... */
29 tsc2007@49 {
30 compatible = "ti,tsc2007";
31 reg = <0x49>;
32 interrupt-parent = <&gpio4>;
33 interrupts = <0x0 0x8>;
34 gpios = <&gpio4 0 0>;
35 ti,x-plate-ohms = <180>;
36 };
37
38 /* ... */
39 };
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