xref: /OK3568_Linux_fs/u-boot/doc/device-tree-bindings/mailbox/mailbox.txt (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun* Generic Mailbox Controller and client driver bindings
2*4882a593Smuzhiyun
3*4882a593SmuzhiyunGeneric binding to provide a way for Mailbox controller drivers to
4*4882a593Smuzhiyunassign appropriate mailbox channel to client drivers.
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun* Mailbox Controller
7*4882a593Smuzhiyun
8*4882a593SmuzhiyunRequired property:
9*4882a593Smuzhiyun- #mbox-cells: Must be at least 1. Number of cells in a mailbox
10*4882a593Smuzhiyun		specifier.
11*4882a593Smuzhiyun
12*4882a593SmuzhiyunExample:
13*4882a593Smuzhiyun	mailbox: mailbox {
14*4882a593Smuzhiyun		...
15*4882a593Smuzhiyun		#mbox-cells = <1>;
16*4882a593Smuzhiyun	};
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun* Mailbox Client
20*4882a593Smuzhiyun
21*4882a593SmuzhiyunRequired property:
22*4882a593Smuzhiyun- mboxes: List of phandle and mailbox channel specifiers.
23*4882a593Smuzhiyun
24*4882a593SmuzhiyunOptional property:
25*4882a593Smuzhiyun- mbox-names: List of identifier strings for each mailbox channel.
26*4882a593Smuzhiyun
27*4882a593SmuzhiyunExample:
28*4882a593Smuzhiyun	pwr_cntrl: power {
29*4882a593Smuzhiyun		...
30*4882a593Smuzhiyun		mbox-names = "pwr-ctrl", "rpc";
31*4882a593Smuzhiyun		mboxes = <&mailbox 0 &mailbox 1>;
32*4882a593Smuzhiyun	};
33