linux-kernel - [RFC 2/6] mailbox: document bindings

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Date:	Fri, 7 Feb 2014 16:50:15 -0800
From:	Courtney Cavin <courtney.cavin@...ymobile.com>
To:	<s-anna@...com>, <rob.herring@...xeda.com>,
	<rafael.j.wysocki@...el.com>, <mark.langsdorf@...xeda.com>,
	<tony@...mide.com>, <omar.ramirez@...itl.com>
CC:	<gregkh@...uxfoundation.org>, <pawel.moll@....com>,
	<mark.rutland@....com>, <ijc+devicetree@...lion.org.uk>,
	<galak@...eaurora.org>, <rob@...dley.net>,
	<linux-doc@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [RFC 2/6] mailbox: document bindings

Signed-off-by: Courtney Cavin <courtney.cavin@...ymobile.com>
---
 .../devicetree/bindings/mailbox/mailbox.txt        | 44 ++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mailbox/mailbox.txt

diff --git a/Documentation/devicetree/bindings/mailbox/mailbox.txt b/Documentation/devicetree/bindings/mailbox/mailbox.txt
new file mode 100644
index 0000000..846eb49
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/mailbox.txt
@@ -0,0 +1,44 @@
+Binding documentation for mailbox providers and consumers
+--
+
+Mailbox providers may be represented by any node in a device tree.  These
+nodes are designated as mailbox providers.  Consumers can then use a phandle
+to a mailbox provider, along with channel specifier information in order to
+get a mailbox.
+
+MAILBOX PROVIDERS
+
+#mbox-cells:
+	Usage: required
+	Type: u32
+	Desc: Number of cells in a mailbox specifier; Typically 1 for nodes
+	      which only need a channel index.
+
+
+Example:
+	mailbox: mailbox {
+		#mbox-cells = <1>;
+		...
+	};
+
+
+MAILBOX CONSUMERS
+
+mbox:
+	Usage: required
+	Type: < [phandle] [mailbox-specifier] >
+	Desc: List of phandle and mailbox specifier pairs, matching provider's
+	      #mbox-cells property
+
+mbox-names:
+	Usage: optional
+	Type: string array
+	Desc: List of mailbox input name strings sorted in the same order as
+	      the mbox property.  Consumer drivers should use mbox-names
+	      to match mailbox input names with mailbox specifiers.
+
+Example:
+	consumer {
+		mbox-names = "comms";
+		mbox = <&mailbox 0>;
+	};
-- 
1.8.1.5

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