[PATCH 1/2] doc: Add bindings document for Xilinx LogiCore PR Decoupler

[Moritz Fischer <mdf@kernel.org>]

This adds the binding documentation for the Xilinx LogiCORE PR
Decoupler soft core.

Signed-off-by: Moritz Fischer <mdf@kernel.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Sören Brinkmann <soren.brinkmann@xilinx.com>
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
---
 .../bindings/fpga/xilinx-pr-decoupler.txt          | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt

diff --git a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
new file mode 100644
index 0000000..b82b928
--- /dev/null
+++ b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
@@ -0,0 +1,24 @@
+Xilinx LogiCORE Partial Reconfig Decoupler Softcore
+
+The Xilinx LogiCORE Partial Reconfig Decoupler  manages one or more
+decouplers / fpga bridges.
+The controller can decouple/disable the bridges which prevents signal
+changes from passing through the bridge.  The controller can also
+couple /enable the bridges which allows traffic to pass through the
+bridge normally.
+
+Required properties:
+- compatible		: Should contain "xlnx,pr-decoupler-1.00"
+- regs			: base address and size for decoupler module
+
+Optional properties:
+- bridge-enable		: 0 if driver should disable bridge at startup
+			  1 if driver should enable bridge at startup
+			  Default is to leave bridge in current state.
+
+Example:
+	fpga-bridge@100000450 {
+		compatible = "xlnx,pr-decoupler-1.00";
+		regs = <0x1000 0x10>;
+		bridge-enable = <0>;
+	};
-- 
2.7.4