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dt-bindings: input: add bindings document for ar1021_i2c driver 

Add a simple binding document describing the supported devices and the
I2C bus address.

Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Martin Kepplinger 2017-04-20 10:41:27 -07:00 committed by Dmitry Torokhov
parent cd81abdfd4
commit 1613976bbd
1 changed files with 16 additions and 0 deletions
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Documentation/devicetree/bindings/input/touchscreen/ar1021.txt Normal file
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* Microchip AR1020 and AR1021 touchscreen interface (I2C)
Required properties:
- compatible : "microchip,ar1021-i2c"
- reg : I2C slave address
- interrupt-parent : the phandle for the interrupt controller
- interrupts : touch controller interrupt
Example:
touchscreen@4d {
compatible = "microchip,ar1021-i2c";
reg = <0x4d>;
interrupt-parent = <&gpio3>;
interrupts = <11 IRQ_TYPE_LEVEL_HIGH>;
};