Rockchip mailbox The Rockchip mailbox is used by the Rockchip CPU cores to communicate requests to MCU processor. Refer to ./mailbox.txt for generic information about mailbox device-tree bindings. Required properties: - compatible: should be one of the following. - "rockchip,rk3368-mbox" for rk3368 - reg: physical base address of the controller and length of memory mapped region. - interrupts: The interrupt number to the cpu. The interrupt specifier format depends on the interrupt controller. - #mbox-cells: Common mailbox binding property to identify the number of cells required for the mailbox specifier. Should be 1 Example: -------- /* RK3368 */ mbox: mbox@ff6b0000 { compatible = "rockchip,rk3368-mailbox"; reg = <0x0 0xff6b0000 0x0 0x1000>, interrupts = , , , ; #mbox-cells = <1>; };