[deliverable/linux.git] / Documentation / devicetree / bindings / mailbox / brcm,bcm2835-mbox.txt

Broadcom BCM2835 VideoCore mailbox IPC

Required properties:

- compatible:	Should be "brcm,bcm2835-mbox"
- reg:		Specifies base physical address and size of the registers
- interrupts:	The interrupt number
		  See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
- #mbox-cells:	Specifies the number of cells needed to encode a mailbox
		  channel. The value shall be 0, since there is only one
		  mailbox channel implemented by the device.

Example:

mailbox: mailbox@7e00b800 {
	compatible = "brcm,bcm2835-mbox";
	reg = <0x7e00b880 0x40>;
	interrupts = <0 1>;
	#mbox-cells = <0>;
};

firmware: firmware {
	compatible = "raspberrypi,firmware";
	mboxes = <&mailbox>;
	#power-domain-cells = <1>;
};
Commit	Line	Data
d4b5c782 LR	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	};