FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/serial/maxim,max310x.txt

     * Maxim MAX310X advanced Universal Asynchronous Receiver-Transmitter (UART)
     
     Required properties:
     - compatible: Should be one of the following:
       - "maxim,max3107" for Maxim MAX3107,
       - "maxim,max3108" for Maxim MAX3108,
       - "maxim,max3109" for Maxim MAX3109,
       - "maxim,max14830" for Maxim MAX14830.
     - reg: SPI chip select number.
    - interrupts: Specifies the interrupt source of the parent interrupt
      controller. The format of the interrupt specifier depends on the
      parent interrupt controller.
    - clocks: phandle to the IC source clock.
    - clock-names: Should be "xtal" if clock is an external crystal or
      "osc" if an external clock source is used.
    
    Optional properties:
    - gpio-controller: Marks the device node as a GPIO controller.
    - #gpio-cells: Should be two. The first cell is the GPIO number and
      the second cell is used to specify the GPIO polarity:
        0 = active high,
        1 = active low.
    
    Example:
    
    / {
            clocks {
                    spi_uart_clk: osc_max14830 {
                            compatible = "fixed-clock";
                            #clock-cells = <0>;
                            clock-frequency = <3686400>;
                    };
    
            };
    };
    
    &spi0 {
            max14830: max14830@0 {
                    compatible = "maxim,max14830";
                    reg = <0>;
                    clocks = <&spi_uart_clk>;
                    clock-names = "osc";
                    interrupt-parent = <&gpio3>;
                    interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
                    gpio-controller;
                    #gpio-cells = <2>;
            };
    };

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