summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/input/touchscreen/chipone_icn8318.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/input/touchscreen/chipone_icn8318.txt')
-rw-r--r--Documentation/devicetree/bindings/input/touchscreen/chipone_icn8318.txt44
1 files changed, 44 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/chipone_icn8318.txt b/Documentation/devicetree/bindings/input/touchscreen/chipone_icn8318.txt
new file mode 100644
index 000000000..38b0603f6
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/chipone_icn8318.txt
@@ -0,0 +1,44 @@
+* ChipOne icn8318 I2C touchscreen controller
+
+Required properties:
+ - compatible : "chipone,icn8318"
+ - reg : I2C slave address of the chip (0x40)
+ - interrupts : interrupt specification for the icn8318 interrupt
+ - wake-gpios : GPIO specification for the WAKE input
+ - touchscreen-size-x : horizontal resolution of touchscreen (in pixels)
+ - touchscreen-size-y : vertical resolution of touchscreen (in pixels)
+
+Optional properties:
+ - pinctrl-names : should be "default"
+ - pinctrl-0: : a phandle pointing to the pin settings for the
+ control gpios
+ - touchscreen-fuzz-x : horizontal noise value of the absolute input
+ device (in pixels)
+ - touchscreen-fuzz-y : vertical noise value of the absolute input
+ device (in pixels)
+ - touchscreen-inverted-x : X axis is inverted (boolean)
+ - touchscreen-inverted-y : Y axis is inverted (boolean)
+ - touchscreen-swapped-x-y : X and Y axis are swapped (boolean)
+ Swapping is done after inverting the axis
+
+Example:
+
+i2c@00000000 {
+ /* ... */
+
+ chipone_icn8318@40 {
+ compatible = "chipone,icn8318";
+ reg = <0x40>;
+ interrupt-parent = <&pio>;
+ interrupts = <9 IRQ_TYPE_EDGE_FALLING>; /* EINT9 (PG9) */
+ pinctrl-names = "default";
+ pinctrl-0 = <&ts_wake_pin_p66>;
+ wake-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; /* PB3 */
+ touchscreen-size-x = <800>;
+ touchscreen-size-y = <480>;
+ touchscreen-inverted-x;
+ touchscreen-swapped-x-y;
+ };
+
+ /* ... */
+};