57 lines
1.8 KiB
Plaintext
57 lines
1.8 KiB
Plaintext
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Synaptics RMI4 2D Sensor 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 which contain 2D sensors using Function 11 or
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Function 12. Complete documentation for transports and other functions
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can be found in:
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Documentation/devicetree/bindings/input/rmi4.
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RMI4 Function 11 and Function 12 are for 2D touch position sensing.
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Additional documentation for F11 can be found at:
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http://www.synaptics.com/sites/default/files/511-000136-01-Rev-E-RMI4-Interfacing-Guide.pdf
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Optional Touch Properties:
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Description in Documentation/devicetree/bindings/input/touchscreen
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- touchscreen-inverted-x
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- touchscreen-inverted-y
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- touchscreen-swapped-x-y
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- touchscreen-x-mm
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- touchscreen-y-mm
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Optional Properties:
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- syna,clip-x-low: Sets a minimum value for X.
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- syna,clip-y-low: Sets a minimum value for Y.
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- syna,clip-x-high: Sets a maximum value for X.
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- syna,clip-y-high: Sets a maximum value for Y.
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- syna,offset-x: Add an offset to X.
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- syna,offset-y: Add an offset to Y.
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- syna,delta-x-threshold: Set the minimum distance on the X axis required
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to generate an interrupt in reduced reporting
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mode.
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- syna,delta-y-threshold: Set the minimum distance on the Y axis required
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to generate an interrupt in reduced reporting
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mode.
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- syna,sensor-type: Set the sensor type. 1 for touchscreen 2 for touchpad.
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- syna,disable-report-mask: Mask for disabling posiiton reporting. Used to
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disable reporing absolute position data.
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- syna,rezero-wait-ms: Time in miliseconds to wait after issuing a rezero
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command.
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Example of a RMI4 I2C device with F11:
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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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...
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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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