mailbox: Introduce K3 Secure Proxy Driver
Secure Proxy module manages hardware threads that are meant
for communication between the processor entities. Adding
support for this driver.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
diff --git a/doc/device-tree-bindings/mailbox/k3-secure-proxy.txt b/doc/device-tree-bindings/mailbox/k3-secure-proxy.txt
new file mode 100644
index 0000000..f3add0d
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+++ b/doc/device-tree-bindings/mailbox/k3-secure-proxy.txt
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+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>;
+ [...]
+};