[PATCH v3 crypto+mailbox+firmware RESEND 1/6] dt-bindings: mailbox: Document armada-3700-rwtm-mailbox binding

[Marek BehÃn]

This adds device tree binding documentation for the rWTM BIU mailbox
driver on the Armada 37xx SOC (EspressoBin, Turris Mox).

Signed-off-by: Marek BehÃn <marek.behun@xxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
---
 .../mailbox/marvell,armada-3700-rwtm-mailbox.txt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mailbox/marvell,armada-3700-rwtm-mailbox.txt

diff --git a/Documentation/devicetree/bindings/mailbox/marvell,armada-3700-rwtm-mailbox.txt b/Documentation/devicetree/bindings/mailbox/marvell,armada-3700-rwtm-mailbox.txt
new file mode 100644
index 000000000000..282ab81a4ea6
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/marvell,armada-3700-rwtm-mailbox.txt
@@ -0,0 +1,16 @@
+* rWTM BIU Mailbox driver for Armada 37xx
+
+Required properties:
+- compatible:	must be "marvell,armada-3700-rwtm-mailbox"
+- reg:		physical base address of the mailbox and length of memory mapped
+		region
+- interrupts:	the IRQ line for the mailbox
+- #mbox-cells:	must be 1
+
+Example:
+	rwtm: mailbox@b0000 {
+		compatible = "marvell,armada-3700-rwtm-mailbox";
+		reg = <0xb0000 0x100>;
+		interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
+		#mbox-cells = <1>;
+	};
-- 
2.19.2