42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
|
* 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>;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* ... */
|
||
|
|
};
|