FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/spi/spi-img-spfi.txt

     IMG Synchronous Peripheral Flash Interface (SPFI) controller
     
     Required properties:
     - compatible: Must be "img,spfi".
     - reg: Must contain the base address and length of the SPFI registers.
     - interrupts: Must contain the SPFI interrupt.
     - clocks: Must contain an entry for each entry in clock-names.
       See ../clock/clock-bindings.txt for details.
     - clock-names: Must include the following entries:
      - spfi: SPI operating clock
      - sys: SPI system interface clock
    - dmas: Must contain an entry for each entry in dma-names.
      See ../dma/dma.txt for details.
    - dma-names: Must include the following entries:
      - rx
      - tx
    - cs-gpios: Must specify the GPIOs used for chipselect lines.
    - #address-cells: Must be 1.
    - #size-cells: Must be 0.
    
    Optional properties:
    - img,supports-quad-mode: Should be set if the interface supports quad mode
      SPI transfers.
    - spfi-max-frequency: Maximum speed supported by the spfi block.
    
    Example:
    
    spi@18100f00 {
            compatible = "img,spfi";
            reg = <0x18100f00 0x100>;
            interrupts = <GIC_SHARED 22 IRQ_TYPE_LEVEL_HIGH>;
            clocks = <&spi_clk>, <&system_clk>;
            clock-names = "spfi", "sys";
            dmas = <&mdc 9 0xffffffff 0>, <&mdc 10 0xffffffff 0>;
            dma-names = "rx", "tx";
    
            #address-cells = <1>;
            #size-cells = <0>;
    };

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