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* Renesas SH-Mobile Serial Communication Interface

Required properties:

  - compatible: Must contain one of the following:

    - "renesas,scif-r7s72100" for R7S72100 (RZ/A1H) SCIF compatible UART.
    - "renesas,scifa-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFA compatible UART.
    - "renesas,scifb-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFB compatible UART.
    - "renesas,scifa-r8a7740" for R8A7740 (R-Mobile A1) SCIFA compatible UART.
    - "renesas,scifb-r8a7740" for R8A7740 (R-Mobile A1) SCIFB compatible UART.
    - "renesas,scif-r8a7778" for R8A7778 (R-Car M1) SCIF compatible UART.
    - "renesas,scif-r8a7779" for R8A7779 (R-Car H1) SCIF compatible UART.
    - "renesas,scif-r8a7790" for R8A7790 (R-Car H2) SCIF compatible UART.
    - "renesas,scifa-r8a7790" for R8A7790 (R-Car H2) SCIFA compatible UART.
    - "renesas,scifb-r8a7790" for R8A7790 (R-Car H2) SCIFB compatible UART.
    - "renesas,hscif-r8a7790" for R8A7790 (R-Car H2) HSCIF compatible UART.
    - "renesas,scif-r8a7791" for R8A7791 (R-Car M2) SCIF compatible UART.
    - "renesas,scifa-r8a7791" for R8A7791 (R-Car M2) SCIFA compatible UART.
    - "renesas,scifb-r8a7791" for R8A7791 (R-Car M2) SCIFB compatible UART.
    - "renesas,hscif-r8a7791" for R8A7791 (R-Car M2) HSCIF compatible UART.
    - "renesas,scif-r8a7794" for R8A7794 (R-Car E2) SCIF compatible UART.
    - "renesas,scifa-r8a7794" for R8A7794 (R-Car E2) SCIFA compatible UART.
    - "renesas,scifb-r8a7794" for R8A7794 (R-Car E2) SCIFB compatible UART.
    - "renesas,hscif-r8a7794" for R8A7794 (R-Car E2) HSCIF compatible UART.
    - "renesas,scifa-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFA compatible UART.
    - "renesas,scifb-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFB compatible UART.
    - "renesas,scif" for generic SCIF compatible UART.
    - "renesas,scifa" for generic SCIFA compatible UART.
    - "renesas,scifb" for generic SCIFB compatible UART.
    - "renesas,hscif" for generic HSCIF compatible UART.
    - "renesas,sci" for generic SCI compatible UART.

    When compatible with the generic version, nodes must list the
    SoC-specific version corresponding to the platform first followed by the
    generic version.

  - reg: Base address and length of the I/O registers used by the UART.
  - interrupts: Must contain an interrupt-specifier for the SCIx interrupt.

  - clocks: Must contain a phandle and clock-specifier pair for each entry
    in clock-names.
  - clock-names: Must contain "sci_ick" for the SCIx UART interface clock.

Note: Each enabled SCIx UART should have an alias correctly numbered in the
"aliases" node.

Optional properties:
  - dmas: Must contain a list of two references to DMA specifiers, one for
	  transmission, and one for reception.
  - dma-names: Must contain a list of two DMA names, "tx" and "rx".

Example:
	aliases {
		serial0 = &scifa0;
	};

	scifa0: serial@e6c40000 {
		compatible = "renesas,scifa-r8a7790", "renesas,scifa";
		reg = <0 0xe6c40000 0 64>;
		interrupt-parent = <&gic>;
		interrupts = <0 144 IRQ_TYPE_LEVEL_HIGH>;
		clocks = <&mstp2_clks R8A7790_CLK_SCIFA0>;
		clock-names = "sci_ick";
		dmas = <&dmac0 0x21>, <&dmac0 0x22>;
		dma-names = "tx", "rx";
	};