cdns,gpio.txt

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    1 Cadence GPIO controller bindings
    2 
    3 Required properties:
    4 - compatible: should be "cdns,gpio-r1p02".
    5 - reg: the register base address and size.
    6 - #gpio-cells: should be 2.
    7         * first cell is the GPIO number.
    8         * second cell specifies the GPIO flags, as defined in
    9                 <dt-bindings/gpio/gpio.h>. Only the GPIO_ACTIVE_HIGH
   10                 and GPIO_ACTIVE_LOW flags are supported.
   11 - gpio-controller: marks the device as a GPIO controller.
   12 - clocks: should contain one entry referencing the peripheral clock driving
   13         the GPIO controller.
   14 
   15 Optional properties:
   16 - ngpios: integer number of gpio lines supported by this controller, up to 32.
   17 - interrupts: interrupt specifier for the controllers interrupt.
   18 - interrupt-controller: marks the device as an interrupt controller. When
   19         defined, interrupts, interrupt-parent and #interrupt-cells
   20         are required.
   21 - interrupt-cells: should be 2.
   22         * first cell is the GPIO number you want to use as an IRQ source.
   23         * second cell specifies the IRQ type, as defined in
   24                 <dt-bindings/interrupt-controller/irq.h>.
   25                 Currently only level sensitive IRQs are supported.
   26 
   27 
   28 Example:
   29         gpio0: gpio-controller@fd060000 {
   30                 compatible = "cdns,gpio-r1p02";
   31                 reg =<0xfd060000 0x1000>;
   32 
   33                 clocks = <&gpio_clk>;
   34 
   35                 interrupt-parent = <&gic>;
   36                 interrupts = <0 5 IRQ_TYPE_LEVEL_HIGH>;
   37 
   38                 gpio-controller;
   39                 #gpio-cells = <2>;
   40 
   41                 interrupt-controller;
   42                 #interrupt-cells = <2>;
   43         };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/gpio/cdns,gpio.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/gpio/cdns,gpio.txt