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/omap-keypad.txt

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    1 * TI's Keypad Controller device tree bindings
    2 
    3 TI's Keypad controller is used to interface a SoC with a matrix-type
    4 keypad device. The keypad controller supports multiple row and column lines.
    5 A key can be placed at each intersection of a unique row and a unique column.
    6 The keypad controller can sense a key-press and key-release and report the
    7 event using a interrupt to the cpu.
    8 
    9 This binding is based on the matrix-keymap binding with the following
   10 changes:
   11 
   12 keypad,num-rows and keypad,num-columns are required.
   13 
   14 Required SoC Specific Properties:
   15 - compatible: should be one of the following
   16    - "ti,omap4-keypad": For controllers compatible with omap4 keypad
   17       controller.
   18 
   19 Optional Properties specific to linux:
   20 - linux,keypad-no-autorepeat: do no enable autorepeat feature.
   21 
   22 Example:
   23         keypad@4ae1c000{
   24                 compatible = "ti,omap4-keypad";
   25                 keypad,num-rows = <2>;
   26                 keypad,num-columns = <8>;
   27                 linux,keypad-no-autorepeat;
   28         };

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