1Texas Instruments' Secure Proxy
2========================================
3
4The Texas Instruments' secure proxy is a mailbox controller that has
5configurable queues selectable at SoC(System on Chip) integration. The
6Message manager is broken up into different address regions that are
7called "threads" or "proxies" - each instance is unidirectional and is
8instantiated at SoC integration level by system controller to indicate
9receive or transmit path.
10
11Message Manager Device Node:
12===========================
13Required properties:
14--------------------
15- compatible:		Shall be "ti,am654-secure-proxy"
16- reg-names 		target_data - Map the proxy data region
17			rt - Map the realtime status region
18			scfg - Map the configuration region
19- reg:			Contains the register map per reg-names.
20- #mbox-cells		Shall be 1 and shall refer to the transfer path
21			called thread.
22- interrupt-names:	Contains interrupt names matching the rx transfer path
23			for a given SoC. Receive interrupts shall be of the
24			format: "rx_<PID>".
25- interrupts:		Contains the interrupt information corresponding to
26			interrupt-names property.
27
28Example(AM654):
29------------
30
31	secure_proxy: mailbox@32c00000 {
32		compatible = "ti,am654-secure-proxy";
33		#mbox-cells = <1>;
34		reg-names = "target_data", "rt", "scfg";
35		reg = <0x0 0x32c00000 0x0 0x100000>,
36		      <0x0 0x32400000 0x0 0x100000>,
37		      <0x0 0x32800000 0x0 0x100000>;
38		interrupt-names = "rx_011";
39		interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
40	};
41
42	dmsc: dmsc {
43		[...]
44		mbox-names = "rx", "tx";
45		# RX Thread ID is 11
46		# TX Thread ID is 13
47		mboxes= <&secure_proxy 11>,
48			<&secure_proxy 13>;
49		[...]
50	};
51