Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / input / touchscreen / tsc2007.txt

diff --git a/kernel/Documentation/devicetree/bindings/input/touchscreen/tsc2007.txt b/kernel/Documentation/devicetree/bindings/input/touchscreen/tsc2007.txt
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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>;
+               };
+
+               /* ... */
+       };