FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/soc/fsl/cpm_qe/qe/par_io.txt

     * Parallel I/O Ports
     
     This node configures Parallel I/O ports for CPUs with QE support.
     The node should reside in the "soc" node of the tree.  For each
     device that using parallel I/O ports, a child node should be created.
     See the definition of the Pin configuration nodes below for more
     information.
     
     Required properties:
    - device_type : should be "par_io".
    - reg : offset to the register set and its length.
    - num-ports : number of Parallel I/O ports
    
    Example:
    par_io@1400 {
            reg = <1400 100>;
            #address-cells = <1>;
            #size-cells = <0>;
            device_type = "par_io";
            num-ports = <7>;
            ucc_pin@1 {
                    ......
            };
    
    Note that "par_io" nodes are obsolete, and should not be used for
    the new device trees. Instead, each Par I/O bank should be represented
    via its own gpio-controller node:
    
    Required properties:
    - #gpio-cells : should be "2".
    - compatible : should be "fsl,<chip>-qe-pario-bank",
      "fsl,mpc8323-qe-pario-bank".
    - reg : offset to the register set and its length.
    - gpio-controller : node to identify gpio controllers.
    
    Example:
            qe_pio_a: gpio-controller@1400 {
                    #gpio-cells = <2>;
                    compatible = "fsl,mpc8360-qe-pario-bank",
                    "fsl,mpc8323-qe-pario-bank";
                    reg = <0x1400 0x18>;
                    gpio-controller;
              };
    
            qe_pio_e: gpio-controller@1460 {
                    #gpio-cells = <2>;
                    compatible = "fsl,mpc8360-qe-pario-bank",
                                 "fsl,mpc8323-qe-pario-bank";
                    reg = <0x1460 0x18>;
                    gpio-controller;
              };

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