1ST Microelectronics Mailbox Driver
2
3Each ST Mailbox IP currently consists of 4 instances of 32 channels.  Messages
4are passed between Application and Remote processors using shared memory.
5
6Controller
7----------
8
9Required properties:
10- compatible		: Should be "st,stih407-mailbox"
11- reg			: Offset and length of the device's register set
12- mbox-name		: Name of the mailbox
13- #mbox-cells:		: Must be 2
14			  <&phandle instance channel direction>
15			    phandle   : Label name of controller
16			    instance  : Instance number
17			    channel   : Channel number
18
19Optional properties
20- interrupts		: Contains the IRQ line for a Rx mailbox
21
22Example:
23
24mailbox0: mailbox@0  {
25	compatible	= "st,stih407-mailbox";
26	reg		= <0x08f00000 0x1000>;
27	interrupts	= <GIC_SPI 1 IRQ_TYPE_NONE>;
28	#mbox-cells	= <2>;
29	mbox-name	= "a9";
30};
31
32Client
33------
34
35Required properties:
36- compatible		: Many (See the client docs)
37- reg			: Shared (between Application and Remote) memory address
38- mboxes		: Standard property to specify a Mailbox (See ./mailbox.txt)
39			  Cells must match 'mbox-cells' (See Controller docs above)
40
41Optional properties
42- mbox-names		: Name given to channels seen in the 'mboxes' property.
43
44Example:
45
46mailbox_test {
47	compatible	= "mailbox-test";
48	reg		= <0x[shared_memory_address], [shared_memory_size]>;
49	mboxes		= <&mailbox2 0 1>, <&mailbox0 2 1>;
50	mbox-names	= "tx",	"rx";
51};
52