[PATCH v4 1/3] dt-bindings: Document Broadcom iProc mailbox controller driver

Add binding document for brcm,iproc-mailbox.

Reviewed-by: Jonathan Richardson <jonathan.richardson-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Tested-by: Jonathan Richardson <jonathan.richardson-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Reviewed-by: Vikram Prakash <vikram.prakash-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Reviewed-by: Ray Jui <ray.jui-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Reviewed-by: Shreesha Rajashekar <shreesha.rajashekar-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Reviewed-by: Scott Branden <scott.branden-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Signed-off-by: Jonathan Richardson <jonathan.richardson-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
---
 .../devicetree/bindings/mailbox/brcm,iproc-mailbox.txt | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mailbox/brcm,iproc-mailbox.txt

diff --git a/Documentation/devicetree/bindings/mailbox/brcm,iproc-mailbox.txt b/Documentation/devicetree/bindings/mailbox/brcm,iproc-mailbox.txt
new file mode 100644
index 0000000..a832feb
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/brcm,iproc-mailbox.txt

@@ -0,0 +1,18 @@
+* Broadcom's iProc Mailbox Controller
+
+Broadcom iProc architected SoC's have an always on Cortex-M0 MCU processor that
+handles support for power, clock, and reset management. The iProc mailbox
+controller handles all communication with this processor.
+
+Required properties:
+- compatible: Must be "brcm,iproc-mailbox"
+- reg: Defines the base address of the mailbox controller.
+- #mbox-cells: Must be 1.
+
+Example:
+
+	mailbox: mailbox@3024024 {
+		compatible = "brcm,iproc-mailbox";
+		reg = <0x03024024 0x8>;
+		#mbox-cells = <1>;
+	};

-- 
1.9.1

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