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

     Xilinx SPI controller Device Tree Bindings
     -------------------------------------------------
     
     Required properties:
     - compatible            : Should be "xlnx,xps-spi-2.00.a", "xlnx,xps-spi-2.00.b" or "xlnx,axi-quad-spi-1.00.a"
     - reg                   : Physical base address and size of SPI registers map.
     - interrupts            : Property with a value describing the interrupt
                               number.
     
    Optional properties:
    - xlnx,num-ss-bits       : Number of chip selects used.
    - xlnx,num-transfer-bits : Number of bits per transfer. This will be 8 if not specified
    
    Example:
            axi_quad_spi@41e00000 {
                            compatible = "xlnx,xps-spi-2.00.a";
                            interrupt-parent = <&intc>;
                            interrupts = <0 31 1>;
                            reg = <0x41e00000 0x10000>;
                            xlnx,num-ss-bits = <0x1>;
                            xlnx,num-transfer-bits = <32>;
            };
    

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