Signed-off-by: Moritz Fischer <moritz.fischer@xxxxxxxxx>
Acked-by: Michal Simek <michal.simek@xxxxxxxxxx>
---
.../devicetree/bindings/mailbox/xilinx-mailbox.txt | 44 ++++++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mailbox/xilinx-mailbox.txt
diff --git a/Documentation/devicetree/bindings/mailbox/xilinx-mailbox.txt b/Documentation/devicetree/bindings/mailbox/xilinx-mailbox.txt
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+Xilinx Mailbox Driver
+=====================
+
+Required properties:
+- compatible : "xlnx,mailbox-2.1".
+- reg : physical base address of the mailbox and length of
+ memory mapped region.
+- #mbox-cells : common mailbox binding property to identify the number
+ of cells required for the mailbox specifier, should be 0
+- clocks : phandle to clock provider
+- clock-names : must be 'mbox'
+
+Optional properties:
+- interrupt-parent : interrupt source phandle
+- interrupts : interrupt number, The interrupt specifier format
+ depends on the interrupt controller parent.
+
+Example:
+ mbox: mailbox@40400000 {
+ compatible = "xlnx,mailbox-2.1";
+ reg = <0x40400000 0x100>;
+ interrupt-parent = <&intc>;
+ interrupts = <5>;
+ #mbox-cells = <0>;
+ clocks = <&clkc 15>;
+ clock-names = "mbox";
+ };
+
+Mailbox client
+===============
+"mboxes" and the optional "mbox-names" (please see
+Documentation/devicetree/bindings/mailbox/mailbox.txt for details). Each value
+of the mboxes property should contain a phandle to the mailbox controller
+device node and second argument is the channel index. It must be 0 (hardware
+support only one channel). The equivalent "mbox-names" property value can be
+used to give a name to the communication channel to be used by the client user.
+
+Example:
+ mclient0: mclient0@400 {
+ compatible = "client-1.0";
+ reg = <0x400 0x10>;
+ mbox-names = "mbox";
+ mboxes = <&mbox 0>;
+ };
--
2.4.3
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