Add a common touchscreen optional property that will specify
the minimum pressure applied to the screen that is needed
such that the driver will report the touch event.

Signed-off-by: Eugen Hristev <eugen.hris...@microchip.com>
---
 Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git 
a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt 
b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
index 537643e..c84047a 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
+++ b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
@@ -7,6 +7,9 @@ Optional properties for Touchscreens:
                                  (in pixels)
  - touchscreen-max-pressure    : maximum reported pressure (arbitrary range
                                  dependent on the controller)
+ - touchscreen-threshold-pressure: minimum pressure on the touchscreen to be
+                                 achieved in order for the touchscreen
+                                 driver to report a touch event.
  - touchscreen-fuzz-x          : horizontal noise value of the absolute input
                                  device (in pixels)
  - touchscreen-fuzz-y          : vertical noise value of the absolute input
-- 
2.7.4

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