FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/spi/microchip,spi-pic32.txt

     Microchip PIC32 SPI Master controller
     
     Required properties:
     - compatible: Should be "microchip,pic32mzda-spi".
     - reg: Address and length of register space for the device.
     - interrupts: Should contain all three spi interrupts in sequence
                   of <fault-irq>, <receive-irq>, <transmit-irq>.
     - interrupt-names: Should be "fault", "rx", "tx" in order.
     - clocks: Phandle of the clock generating SPI clock on the bus.
    - clock-names: Should be "mck0".
    - cs-gpios: Specifies the gpio pins to be used for chipselects.
                See: Documentation/devicetree/bindings/spi/spi-bus.txt
    
    Optional properties:
    - dmas: Two or more DMA channel specifiers following the convention outlined
            in Documentation/devicetree/bindings/dma/dma.txt
    - dma-names: Names for the dma channels. There must be at least one channel
                 named "spi-tx" for transmit and named "spi-rx" for receive.
    
    Example:
    
    spi1: spi@1f821000 {
            compatible = "microchip,pic32mzda-spi";
            reg = <0x1f821000 0x200>;
            interrupts = <109 IRQ_TYPE_LEVEL_HIGH>,
                         <110 IRQ_TYPE_LEVEL_HIGH>,
                         <111 IRQ_TYPE_LEVEL_HIGH>;
            interrupt-names = "fault", "rx", "tx";
            clocks = <&PBCLK2>;
            clock-names = "mck0";
            cs-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>;
            dmas = <&dma 134>, <&dma 135>;
            dma-names = "spi-rx", "spi-tx";
    };

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