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/cypress,tm2-touchkey.txt

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    1 Samsung tm2-touchkey
    2 
    3 Required properties:
    4 - compatible:
    5     * "cypress,tm2-touchkey" - for the touchkey found on the tm2 board
    6     * "cypress,midas-touchkey" - for the touchkey found on midas boards
    7     * "cypress,aries-touchkey" - for the touchkey found on aries boards
    8     * "coreriver,tc360-touchkey" - for the Coreriver TouchCore 360 touchkey
    9 - reg: I2C address of the chip.
   10 - interrupts: interrupt to which the chip is connected (see interrupt
   11         binding[0]).
   12 - vcc-supply : internal regulator output. 1.8V
   13 - vdd-supply : power supply for IC 3.3V
   14 
   15 Optional properties:
   16 - linux,keycodes: array of keycodes (max 4), default KEY_PHONE and KEY_BACK
   17 
   18 [0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
   19 
   20 Example:
   21         &i2c0 {
   22                 /* ... */
   23 
   24                 touchkey@20 {
   25                         compatible = "cypress,tm2-touchkey";
   26                         reg = <0x20>;
   27                         interrupt-parent = <&gpa3>;
   28                         interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
   29                         vcc-supply=<&ldo32_reg>;
   30                         vdd-supply=<&ldo33_reg>;
   31                         linux,keycodes = <KEY_PHONE KEY_BACK>;
   32                 };
   33         };

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