The tracking index is a "minimum" distance two touch points need to have in order for the second to be valid. This adds the corresponding binding property documentation. Signed-off-by: Leif Middelschulte <leif.middelschulte@xxxxxxxxxxxxx> --- .../bindings/input/touchscreen/stmpe.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt b/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt index 09d2d4f288cc..8696af35a7b8 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt @@ -42,6 +42,21 @@ Optional properties: The given window also affects the value range (limits) set within the input subsystem which, in turn, affects the input resolution calculation on both axes. +- st,tracking-index : Minimal distance between the current touch position and the previous + touch position. If the distance is shorter than the tracking + index, it is discarded. The tracking is calculated by summation + of the horizontal and vertical movement. + If pressure reporting is enabled (X/Y/Z), an increase in pressure + override the movement tracking and report the new data set, even + if X/Y is within the previous tracking index. + 0 -> disabled + 1 -> 4 + 4 -> 8 + 3 -> 16 + 4 -> 32 + 5 -> 64 + 6 -> 92 + 7 -> 127 - 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) -- 2.21.0
