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/mailbox/rockchip-mailbox.txt

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    1 Rockchip mailbox
    2 
    3 The Rockchip mailbox is used by the Rockchip CPU cores to communicate
    4 requests to MCU processor.
    5 
    6 Refer to ./mailbox.txt for generic information about mailbox device-tree
    7 bindings.
    8 
    9 Required properties:
   10 
   11  - compatible: should be one of the following.
   12    - "rockchip,rk3368-mbox" for rk3368
   13  - reg: physical base address of the controller and length of memory mapped
   14         region.
   15  - interrupts: The interrupt number to the cpu. The interrupt specifier format
   16         depends on the interrupt controller.
   17  - #mbox-cells: Common mailbox binding property to identify the number
   18         of cells required for the mailbox specifier. Should be 1
   19 
   20 Example:
   21 --------
   22 
   23 /* RK3368 */
   24 mbox: mbox@ff6b0000 {
   25         compatible = "rockchip,rk3368-mailbox";
   26         reg = <0x0 0xff6b0000 0x0 0x1000>,
   27         interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>,
   28                      <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
   29                      <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>,
   30                      <GIC_SPI 149 IRQ_TYPE_LEVEL_HIGH>;
   31         #mbox-cells = <1>;
   32 };

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