From 07f9e5cf8e4154ad17b92ad288be0f04fa0cb94f Mon Sep 17 00:00:00 2001 From: Denis Carikli Date: Tue, 19 Nov 2013 11:56:04 -0800 Subject: Input: tsc2007 - add device tree support. Signed-off-by: Denis Carikli Signed-off-by: Dmitry Torokhov --- .../bindings/input/touchscreen/tsc2007.txt | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/tsc2007.txt (limited to 'Documentation/devicetree/bindings/input/touchscreen/tsc2007.txt') diff --git a/Documentation/devicetree/bindings/input/touchscreen/tsc2007.txt b/Documentation/devicetree/bindings/input/touchscreen/tsc2007.txt new file mode 100644 index 000000000000..ec365e172236 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/tsc2007.txt @@ -0,0 +1,41 @@ +* 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>; + }; + + /* ... */ + }; -- cgit v1.2.3