Texas Instruments' K3 Secure Proxy
===================================

The Texas Instruments' K3 Secure Proxy is a mailbox controller that has
configurable threads maintained by System power processor. Each thread
has different address space that can be used to send or receive messages.

Secure Proxy Device Node:
===========================
Required properties:
--------------------
- compatible:		Shall be: "ti,am654-secure-proxy"
- reg-names		data - Map the data region
			scfg - Map the secure configuration region
			rt - Map the Realtime region.
- reg:			Contains the register map per reg-names.
- #mbox-cells		Shall be 1. Contains the thread ID.

Example:
--------

secproxy: secproxy@285b0000 {
	compatible = "ti,am654-secure-proxy";
	reg = <0x2a380000 0x80000>,
		<0x2a400000 0x80000>,
		<0x2a480000 0x80000>;
	reg-names = "rt", "scfg", "data";
	#mbox-cells = <1>;
};

client:

systemcontroller: systemcontroller {
	[...]
	# RX thread ID is 4.
	# TX thread ID is 5.
	mboxes= <&secproxy 4>,
		<&secproxy 5>;
	[...]
};