FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/spi/spi-clps711x.txt

     Serial Peripheral Interface on Cirrus Logic CL-PS71xx, EP72xx, EP73xx
     
     Required properties
     - #address-cells: must be <1>
     - #size-cells: must be <0>
     - compatible: should include "cirrus,ep7209-spi"
     - reg: Address and length of one register range
     - interrupts: one interrupt line
     - clocks: One entry, refers to the SPI bus clock
    - cs-gpios: Specifies the gpio pins to be used for chipselects.
                See: Documentation/devicetree/bindings/spi/spi-bus.txt
    
    An additional register is present in the system controller,
    which is assumed to be in the same device tree, with and marked
    as compatible with "cirrus,ep7209-syscon3".
    
    Example:
    
    spi@80000500 {
            #address-cells = <1>;
            #size-cells = <0>;
            compatible = "cirrus,ep7209-spi";
            reg = <0x80000500 0x4>;
            interrupts = <15>;
            clocks = <&clks CLPS711X_CLK_SPI>;
    };
    
    syscon3: syscon@80002200 {
            compatible = "cirrus,ep7209-syscon3", "syscon";
            reg = <0x80002200 0x40>;
    };
    

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