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dt-bindings: touchscreen: add touchscreen-x/y-plate-ohms property

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To calculate the pressure on a restrictive touchscreen we need to know
resistance at least of X plate. Some calculations need to use both X and
Y values. So let's add generic properties which can be used by all
drivers.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210525054634.9134-3-o.rempel@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Oleksij Rempel 2021-05-25 11:53:29 -07:00 committed by Dmitry Torokhov
parent 71d576d31f
commit ff7af0fe13
1 changed files with 6 additions and 0 deletions
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6
Documentation/devicetree/bindings/input/touchscreen/touchscreen.yaml
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@ -74,6 +74,12 @@ properties:
touchscreen-y-mm:
description: vertical length in mm of the touchscreen
touchscreen-x-plate-ohms:
description: Resistance of the X-plate in Ohms
touchscreen-y-plate-ohms:
description: Resistance of the Y-plate in Ohms
dependencies:
touchscreen-size-x: [ touchscreen-size-y ]
touchscreen-size-y: [ touchscreen-size-x ]