rmi_2d_sensor.txt (1869B)
1Synaptics RMI4 2D Sensor Device Binding 2 3The Synaptics RMI4 core is able to support RMI4 devices using different 4transports and different functions. This file describes the device tree 5bindings for devices which contain 2D sensors using Function 11 or 6Function 12. Complete documentation for transports and other functions 7can be found in: 8Documentation/devicetree/bindings/input/rmi4. 9 10RMI4 Function 11 and Function 12 are for 2D touch position sensing. 11Additional documentation for F11 can be found at: 12http://www.synaptics.com/sites/default/files/511-000136-01-Rev-E-RMI4-Interfacing-Guide.pdf 13 14Optional Touch Properties: 15Description in Documentation/devicetree/bindings/input/touchscreen 16- touchscreen-inverted-x 17- touchscreen-inverted-y 18- touchscreen-swapped-x-y 19- touchscreen-x-mm 20- touchscreen-y-mm 21 22Optional Properties: 23- syna,clip-x-low: Sets a minimum value for X. 24- syna,clip-y-low: Sets a minimum value for Y. 25- syna,clip-x-high: Sets a maximum value for X. 26- syna,clip-y-high: Sets a maximum value for Y. 27- syna,offset-x: Add an offset to X. 28- syna,offset-y: Add an offset to Y. 29- syna,delta-x-threshold: Set the minimum distance on the X axis required 30 to generate an interrupt in reduced reporting 31 mode. 32- syna,delta-y-threshold: Set the minimum distance on the Y axis required 33 to generate an interrupt in reduced reporting 34 mode. 35- syna,sensor-type: Set the sensor type. 1 for touchscreen 2 for touchpad. 36- syna,disable-report-mask: Mask for disabling posiiton reporting. Used to 37 disable reporing absolute position data. 38- syna,rezero-wait-ms: Time in miliseconds to wait after issuing a rezero 39 command. 40 41 42Example of a RMI4 I2C device with F11: 43Example: 44 &i2c1 { 45 rmi4-i2c-dev@2c { 46 compatible = "syna,rmi4-i2c"; 47 48 ... 49 50 rmi4-f11@11 { 51 reg = <0x11>; 52 touchscreen-inverted-y; 53 syna,sensor-type = <2>; 54 }; 55 }; 56 };