linux/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt

* Freescale Management Complex

The Freescale Management Complex (fsl-mc) is a hardware resource
manager that manages specialized hardware objects used in
network-oriented packet processing applications. After the fsl-mc
block is enabled, pools of hardware resources are available, such as
queues, buffer pools, I/O interfaces. These resources are building
blocks that can be used to create functional hardware objects/devices
such as network interfaces, crypto accelerator instances, L2 switches,
etc.

Required properties:

    - compatible
        Value type: <string>
        Definition: Must be "fsl,qoriq-mc".  A Freescale Management Complex
                    compatible with this binding must have Block Revision
                    Registers BRR1 and BRR2 at offset 0x0BF8 and 0x0BFC in
                    the MC control register region.

    - reg
        Value type: <prop-encoded-array>
        Definition: A standard property.  Specifies one or two regions
                    defining the MC's registers:

                       -the first region is the command portal for the
                        this machine and must always be present

                       -the second region is the MC control registers. This
                        region may not be present in some scenarios, such
                        as in the device tree presented to a virtual machine.

    - msi-parent
        Value type: <phandle>
        Definition: Must be present and point to the MSI controller node
                    handling message interrupts for the MC.

    - ranges
        Value type: <prop-encoded-array>
        Definition: A standard property.  Defines the mapping between the child
                    MC address space and the parent system address space.

                    The MC address space is defined by 3 components:
                       <region type> <offset hi> <offset lo>

                    Valid values for region type are
                       0x0 - MC portals
                       0x1 - QBMAN portals

    - #address-cells
        Value type: <u32>
        Definition: Must be 3.  (see definition in 'ranges' property)

    - #size-cells
        Value type: <u32>
        Definition: Must be 1.

Sub-nodes:

        The fsl-mc node may optionally have dpmac sub-nodes that describe
        the relationship between the Ethernet MACs which belong to the MC
        and the Ethernet PHYs on the system board.

        The dpmac nodes must be under a node named "dpmacs" which contains
        the following properties:

            - #address-cells
              Value type: <u32>
              Definition: Must be present if dpmac sub-nodes are defined and must
                          have a value of 1.

            - #size-cells
              Value type: <u32>
              Definition: Must be present if dpmac sub-nodes are defined and must
                          have a value of 0.

        These nodes must have the following properties:

            - compatible
              Value type: <string>
              Definition: Must be "fsl,qoriq-mc-dpmac".

            - reg
              Value type: <prop-encoded-array>
              Definition: Specifies the id of the dpmac.

            - phy-handle
              Value type: <phandle>
              Definition: Specifies the phandle to the PHY device node associated
                          with the this dpmac.

Example:

        fsl_mc: fsl-mc@80c000000 {
                compatible = "fsl,qoriq-mc";
                reg = <0x00000008 0x0c000000 0 0x40>,    /* MC portal base */
                      <0x00000000 0x08340000 0 0x40000>; /* MC control reg */
                msi-parent = <&its>;
                #address-cells = <3>;
                #size-cells = <1>;

                /*
                 * Region type 0x0 - MC portals
                 * Region type 0x1 - QBMAN portals
                 */
                ranges = <0x0 0x0 0x0 0x8 0x0c000000 0x4000000
                          0x1 0x0 0x0 0x8 0x18000000 0x8000000>;

                dpmacs {
                    #address-cells = <1>;
                    #size-cells = <0>;

                    dpmac@1 {
                        compatible = "fsl,qoriq-mc-dpmac";
                        reg = <1>;
                        phy-handle = <&mdio0_phy0>;
                    }
                }
        };