1 * Rohm BU21013 Touch Screen
2
3 Required properties:
4 - compatible : "rohm,bu21013_tp"
5 - reg : I2C device address
6 - reset-gpios : GPIO pin enabling (selecting) chip (CS)
7 - interrupt-parent : the phandle for the gpio controller
8 - interrupts : (gpio) interrupt to which the chip is connected
9
10 Optional properties:
11 - touch-gpios : GPIO pin registering a touch event
12 - <supply_name>-supply : Phandle to a regulator supply
13 - touchscreen-size-x : General touchscreen binding, see [1].
14 - touchscreen-size-y : General touchscreen binding, see [1].
15 - touchscreen-inverted-x : General touchscreen binding, see [1].
16 - touchscreen-inverted-y : General touchscreen binding, see [1].
17 - touchscreen-swapped-x-y : General touchscreen binding, see [1].
18
19 [1] All general touchscreen properties are described in
20 Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt.
21
22 Deprecated properties:
23 - rohm,touch-max-x : Maximum outward permitted limit in the X axis
24 - rohm,touch-max-y : Maximum outward permitted limit in the Y axis
25 - rohm,flip-x : Flip touch coordinates on the X axis
26 - rohm,flip-y : Flip touch coordinates on the Y axis
27
28 Example:
29
30 i2c@80110000 {
31 bu21013_tp@5c {
32 compatible = "rohm,bu21013_tp";
33 reg = <0x5c>;
34 interrupt-parent = <&gpio2>;
35 interrupts <&20 IRQ_TYPE_LEVEL_LOW>;
36 touch-gpio = <&gpio2 20 GPIO_ACTIVE_LOW>;
37 avdd-supply = <&ab8500_ldo_aux1_reg>;
38
39 touchscreen-size-x = <384>;
40 touchscreen-size-y = <704>;
41 touchscreen-inverted-y;
42 };
43 };
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