Am Freitag, den 14.06.2019, 13:55 -0600 schrieb Rob Herring: > On Mon, May 27, 2019 at 06:07:29PM +0200, Leif Middelschulte wrote: > > This documents the support for specifying the screen size in milimeter > > and its impact on resolution calculation. > > > > Signed-off-by: Leif Middelschulte < > > leif.middelschulte@xxxxxxxxxxxxx > > > > > --- > > Documentation/devicetree/bindings/input/touchscreen/stmpe.txt | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt b/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt > > index 04962e2e1ad0..d20dc5a7d8ad 100644 > > --- a/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt > > +++ b/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt > > @@ -39,6 +39,10 @@ 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. > > +- touchscreen-x-mm : horizontal length in mm of the touchscreen. It affects > > + the input resolution calculation on the horizontal axis. > > +- touchscreen-y-mm : vertical length in mm of the touchscreen. It affects > > + the input resolution calculation on the vertical axis. > > No need to define this again. Just reference the common definition. If > you have any additional constraints, then add them. I assumed it should not be redefined. I merely wanted to document the implication this value has on the automatically configured resolution within `abs_info`. Other drivers might not use it in that way, as the general documentation[0] does not document such a behavior. [0] https://www.kernel.org/doc/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt > Rob
