The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/usb/maxim,max3421.txt

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    1 Maxim Integrated SPI-based USB 2.0 host controller MAX3421E
    2 
    3 Required properties:
    4  - compatible: Should be "maxim,max3421"
    5  - spi-max-frequency: maximum frequency for this device must not exceed 26 MHz.
    6  - reg: chip select number to which this device is connected.
    7  - maxim,vbus-en-pin: <GPOUTx ACTIVE_LEVEL>
    8    GPOUTx is the number (1-8) of the GPOUT pin of MAX3421E to drive Vbus.
    9    ACTIVE_LEVEL is 0 or 1.
   10  - interrupts: the interrupt line description for the interrupt controller.
   11    The driver configures MAX3421E for active low level triggered interrupts,
   12    configure your interrupt line accordingly.
   13 
   14 Example:
   15 
   16         usb@0 {
   17                 compatible = "maxim,max3421";
   18                 reg = <0>;
   19                 maxim,vbus-en-pin = <3 1>;
   20                 spi-max-frequency = <26000000>;
   21                 interrupt-parent = <&PIC>;
   22                 interrupts = <42>;
   23         };

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