FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/spi/brcm,bcm2835-aux-spi.txt

     Broadcom BCM2835 auxiliar SPI1/2 controller
     
     The BCM2835 contains two forms of SPI master controller, one known simply as
     SPI0, and the other known as the "Universal SPI Master"; part of the
     auxiliary block. This binding applies to the SPI1/2 controller.
     
     Required properties:
     - compatible: Should be "brcm,bcm2835-aux-spi".
     - reg: Should contain register location and length for the spi block
    - interrupts: Should contain shared interrupt of the aux block
    - clocks: The clock feeding the SPI controller - needs to
              point to the auxiliar clock driver of the bcm2835,
              as this clock will enable the output gate for the specific
              clock.
    - cs-gpios: the cs-gpios (native cs is NOT supported)
                see also spi-bus.txt
    
    Example:
    
    spi1@7e215080 {
            compatible = "brcm,bcm2835-aux-spi";
            reg = <0x7e215080 0x40>;
            interrupts = <1 29>;
            clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>;
            #address-cells = <1>;
            #size-cells = <0>;
            cs-gpios = <&gpio 18>, <&gpio 17>, <&gpio 16>;
    };
    
    spi2@7e2150c0 {
            compatible = "brcm,bcm2835-aux-spi";
            reg = <0x7e2150c0 0x40>;
            interrupts = <1 29>;
            clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI2>;
            #address-cells = <1>;
            #size-cells = <0>;
            cs-gpios = <&gpio 43>, <&gpio 44>, <&gpio 45>;
    };

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