Broadcom VCHIQ firmware services Required properties: - compatible: Should be "brcm,bcm2835-vchiq" on BCM2835, otherwise "brcm,bcm2836-vchiq". - reg: Physical base address and length of the doorbell register pair - interrupts: The interrupt number See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt Example: mailbox@7e00b840 { compatible = "brcm,bcm2835-vchiq"; reg = <0x7e00b840 0xf>; interrupts = <0 2>; };