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56 lines
1.8 KiB
56 lines
1.8 KiB
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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