63 lines
1.7 KiB
Text
63 lines
1.7 KiB
Text
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Synaptics RMI4 I2C Device Binding
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The Synaptics RMI4 core is able to support RMI4 devices using different
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transports and different functions. This file describes the device tree
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bindings for devices using the I2C transport driver. Complete documentation
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for other transports and functions can be found in
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Documentation/devicetree/bindings/input/rmi4.
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Required Properties:
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- compatible: syna,rmi4-i2c
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- reg: I2C address
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- #address-cells: Set to 1 to indicate that the function child nodes
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consist of only on uint32 value.
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- #size-cells: Set to 0 to indicate that the function child nodes do not
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have a size property.
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Optional Properties:
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- interrupts: interrupt which the rmi device is connected to.
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- interrupt-parent: The interrupt controller.
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See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
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- syna,reset-delay-ms: The number of milliseconds to wait after resetting the
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device.
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- syna,startup-delay-ms: The number of milliseconds to wait after powering on
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the device.
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- vdd-supply: VDD power supply.
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See ../regulator/regulator.txt
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- vio-supply: VIO power supply
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See ../regulator/regulator.txt
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Function Parameters:
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Parameters specific to RMI functions are contained in child nodes of the rmi device
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node. Documentation for the parameters of each function can be found in:
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Documentation/devicetree/bindings/input/rmi4/rmi_f*.txt.
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Example:
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&i2c1 {
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rmi4-i2c-dev@2c {
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compatible = "syna,rmi4-i2c";
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reg = <0x2c>;
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#address-cells = <1>;
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#size-cells = <0>;
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interrupt-parent = <&gpio>;
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interrupts = <4 2>;
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rmi4-f01@1 {
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reg = <0x1>;
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syna,nosleep-mode = <1>;
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};
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rmi4-f11@11 {
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reg = <0x11>;
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touchscreen-inverted-y;
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syna,sensor-type = <2>;
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};
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};
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};
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