Documentation/devicetree/bindings/mailbox/brcm,bcm2835-mbox.txt

   1 Broadcom BCM2835 VideoCore mailbox IPC
   2
   3 Required properties:
   4
   5 - compatible:   Should be "brcm,bcm2835-mbox"
   6 - reg:          Specifies base physical address and size of the registers
   7 - interrupts:   The interrupt number
   8                   See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
   9 - #mbox-cells:  Specifies the number of cells needed to encode a mailbox
  10                   channel. The value shall be 0, since there is only one
  11                   mailbox channel implemented by the device.
  12
  13 Example:
  14
  15 mailbox: mailbox@7e00b800 {
  16         compatible = "brcm,bcm2835-mbox";
  17         reg = <0x7e00b880 0x40>;
  18         interrupts = <0 1>;
  19         #mbox-cells = <0>;
  20 };
  21
  22 firmware: firmware {
  23         compatible = "raspberrypi,firmware";
  24         mboxes = <&mailbox>;
  25         #power-domain-cells = <1>;
  26 };