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Commit 303b3cf9 authored by Benjamin Tissoires's avatar Benjamin Tissoires Committed by Dmitry Torokhov
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dt-bindings: add more optional properties for elan_i2c touchpads 



Some new touchpads IC are connected through PS/2 and I2C. On some of these
new IC, the I2C part doesn't have all of the information available.
We need to be able to forward the touchpad parameters from PS/2 and
thus, we need those new optional properties.

Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent fd1cf11f

Documentation/devicetree/bindings/input/elan_i2c.txt

+11 −0
Original line number Original line Diff line number Diff line
@@ -13,9 +13,20 @@ Optional properties: 
  pinctrl binding [1]).

  pinctrl binding [1]).

- vcc-supply: a phandle for the regulator supplying 3.3V power.

- vcc-supply: a phandle for the regulator supplying 3.3V power.

- elan,trackpoint: touchpad can support a trackpoint (boolean)

- elan,trackpoint: touchpad can support a trackpoint (boolean)

- elan,clickpad: touchpad is a clickpad (the entire surface is a button)

- elan,middle-button: touchpad has a physical middle button

- elan,x_traces: number of antennas on the x axis

- elan,y_traces: number of antennas on the y axis

- some generic touchscreen properties [2]:

  * touchscreen-size-x

  * touchscreen-size-y

  * touchscreen-x-mm

  * touchscreen-y-mm







[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt

[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt

[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt

[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt

[2]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt





Example:

Example:

	&i2c1 {

	&i2c1 {