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dt-bindings: input/touchscreen: add bindings for zinitix
This patch adds dts bindings for the zinitix bt541 touchscreen.
Signed-off-by: Michael Srba <Michael.Srba@seznam.cz>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201001122949.16846-2-michael.srba@seznam.cz
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
authored by
Michael Srba
and committed by
Dmitry Torokhov
8f445ffa
2c2b364f
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Documentation/devicetree/bindings/input/touchscreen/zinitix.txt
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Documentation/devicetree/bindings/input/touchscreen/zinitix.txt
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Device tree bindings for Zinitx BT541 touchscreen controller
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Required properties:
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- compatible : Should be "zinitix,bt541"
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- reg : I2C address of the chip. Should be 0x20
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- interrupts : Interrupt to which the chip is connected
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Optional properties:
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- vdd-supply : Analog power supply regulator on VCCA pin
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- vddo-supply : Digital power supply regulator on VDD pin
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- zinitix,mode : Mode of reporting touch points. Some modes may not work
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with a particular ts firmware for unknown reasons. Available
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modes are 1 and 2. Mode 2 is the default and preferred.
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The touchscreen-* properties are documented in touchscreen.txt in this
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directory.
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Example:
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i2c@00000000 {
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/* ... */
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bt541@20 {
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compatible = "zinitix,bt541";
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reg = <0x20>;
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interrupt-parent = <&msmgpio>;
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interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
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pinctrl-names = "default";
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pinctrl-0 = <&tsp_default>;
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vdd-supply = <®_vdd_tsp>;
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vddo-supply = <&pm8916_l6>;
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touchscreen-size-x = <540>;
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touchscreen-size-y = <960>;
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zinitix,mode = <2>;
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};
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/* ... */
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};
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Documentation/devicetree/bindings/vendor-prefixes.yaml
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Documentation/devicetree/bindings/vendor-prefixes.yaml