d8a8b3edfd
Add devicetree binding for I2C devices and add bindings for optional parameters in the function drivers. Parameters for function drivers are defined in child nodes for each of the functions. Signed-off-by: Andrew Duggan <aduggan@synaptics.com> Acked-by: Rob Herring <robh@kernel.org> Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
54 lines
1.5 KiB
Plaintext
54 lines
1.5 KiB
Plaintext
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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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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