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* Device Tree Bindings for IBM Virtual Trusted Platform Module(vtpm)

Required properties:

- compatible            : property name that conveys the platform architecture
                          identifiers, as 'IBM,vtpm'
- device_type           : specifies type of virtual device
- interrupts            : property specifying the interrupt source number and
                          sense code associated with this virtual I/O Adapters
- ibm,my-drc-index      : integer index for the connector between the device
                          and its parent - present only if Dynamic
                          Reconfiguration(DR) Connector is enabled
- ibm,#dma-address-cells: specifies the number of cells that are used to
                          encode the physical address field of dma-window
                          properties
- ibm,#dma-size-cells   : specifies the number of cells that are used to
                          encode the size field of dma-window properties
- ibm,my-dma-window     : specifies DMA window associated with this virtual
                          IOA
- ibm,loc-code          : specifies the unique and persistent location code
                          associated with this virtual I/O Adapters
- linux,sml-base        : 64-bit base address of the reserved memory allocated
                          for the firmware event log
- linux,sml-size        : size of the memory allocated for the firmware event log

Example (IBM Virtual Trusted Platform Module)
---------------------------------------------

                vtpm@30000003 {
                        ibm,#dma-size-cells = <0x2>;
                        compatible = "IBM,vtpm";
                        device_type = "IBM,vtpm";
                        ibm,my-drc-index = <0x30000003>;
                        ibm,#dma-address-cells = <0x2>;
                        linux,sml-base = <0xc60e 0x0>;
                        interrupts = <0xa0003 0x0>;
                        ibm,my-dma-window = <0x10000003 0x0 0x0 0x0 0x10000000>;
                        ibm,loc-code = "U8286.41A.10082DV-V3-C3";
                        reg = <0x30000003>;
                        linux,sml-size = <0xbce10200>;
                };