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/gpio/gpio-thunderx.txt

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    1 Cavium ThunderX/OCTEON-TX GPIO controller bindings
    2 
    3 Required Properties:
    4 - reg: The controller bus address.
    5 - gpio-controller: Marks the device node as a GPIO controller.
    6 - #gpio-cells: Must be 2.
    7   - First cell is the GPIO pin number relative to the controller.
    8   - Second cell is a standard generic flag bitfield as described in gpio.txt.
    9 
   10 Optional Properties:
   11 - compatible: "cavium,thunder-8890-gpio", unused as PCI driver binding is used.
   12 - interrupt-controller: Marks the device node as an interrupt controller.
   13 - #interrupt-cells: Must be present and have value of 2 if
   14                     "interrupt-controller" is present.
   15   - First cell is the GPIO pin number relative to the controller.
   16   - Second cell is triggering flags as defined in interrupts.txt.
   17 
   18 Example:
   19 
   20 gpio_6_0: gpio@6,0 {
   21         compatible = "cavium,thunder-8890-gpio";
   22         reg = <0x3000 0 0 0 0>; /*  DEVFN = 0x30 (6:0) */
   23         gpio-controller;
   24         #gpio-cells = <2>;
   25         interrupt-controller;
   26         #interrupt-cells = <2>;
   27 };

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