The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/input/touchscreen/tsc2007.txt

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    1 * Texas Instruments tsc2007 touchscreen controller
    2 
    3 Required properties:
    4 - compatible: must be "ti,tsc2007".
    5 - reg: I2C address of the chip.
    6 - ti,x-plate-ohms: X-plate resistance in ohms.
    7 
    8 Optional properties:
    9 - gpios: the interrupt gpio the chip is connected to (trough the penirq pin).
   10   The penirq pin goes to low when the panel is touched.
   11   (see GPIO binding[1] for more details).
   12 - interrupts: (gpio) interrupt to which the chip is connected
   13   (see interrupt binding[0]).
   14 - ti,max-rt: maximum pressure.
   15 - ti,fuzzx: specifies the absolute input fuzz x value.
   16   If set, it will permit noise in the data up to +- the value given to the fuzz
   17   parameter, that is used to filter noise from the event stream.
   18 - ti,fuzzy: specifies the absolute input fuzz y value.
   19 - ti,fuzzz: specifies the absolute input fuzz z value.
   20 - ti,poll-period: how much time to wait (in milliseconds) before reading again the
   21   values from the tsc2007.
   22 
   23 [0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
   24 [1]: Documentation/devicetree/bindings/gpio/gpio.txt
   25 
   26 Example:
   27         &i2c1 {
   28                 /* ... */
   29                 tsc2007@49 {
   30                         compatible = "ti,tsc2007";
   31                         reg = <0x49>;
   32                         interrupt-parent = <&gpio4>;
   33                         interrupts = <0x0 0x8>;
   34                         gpios = <&gpio4 0 0>;
   35                         ti,x-plate-ohms = <180>;
   36                 };
   37 
   38                 /* ... */
   39         };

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