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+* HID over I2C Device-Tree bindings
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+
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+HID over I2C provides support for various Human Interface Devices over the
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+I2C bus. These devices can be for example touchpads, keyboards, touch screens
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+or sensors.
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+
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+The specification has been written by Microsoft and is currently available here:
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+http://msdn.microsoft.com/en-us/library/windows/hardware/hh852380.aspx
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+
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+If this binding is used, the kernel module i2c-hid will handle the communication
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+with the device and the generic hid core layer will handle the protocol.
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+
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+Required properties:
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+- compatible: must be "hid-over-i2c"
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+- reg: i2c slave address
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+- hid-descr-addr: HID descriptor address
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+- interrupts: interrupt line
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+
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+Additional optional properties:
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+
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+Some devices may support additional optional properties to help with, e.g.,
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+power sequencing. The following properties can be supported by one or more
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+device-specific compatible properties, which should be used in addition to the
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+"hid-over-i2c" string.
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+
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+- compatible:
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+ * "wacom,w9013" (Wacom W9013 digitizer). Supports:
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+ - vdd-supply (3.3V)
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+ - vddl-supply (1.8V)
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+ - post-power-on-delay-ms
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+
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+- vdd-supply: phandle of the regulator that provides the supply voltage.
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+- post-power-on-delay-ms: time required by the device after enabling its regulators
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+ or powering it on, before it is ready for communication.
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+
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+Example:
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+
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+ i2c-hid-dev@2c {
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+ compatible = "hid-over-i2c";
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+ reg = <0x2c>;
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+ hid-descr-addr = <0x0020>;
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+ interrupt-parent = <&gpx3>;
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+ interrupts = <3 2>;
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+ };
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