dt-bindings: fpga: Add compatible value for Xilinx DFX AXI shutdown manager

This patch Adds compatible value for Xilinx Dynamic Function eXchnage(DFX)
AXI Shutdown manager IP.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Moritz Fischer <mdf@kernel.org>

diff --git a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
index 4284d29..0acdfa6 100644 (file)
--- a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
+++ b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt
@@ -7,13 +7,24 @@ changes from passing through the bridge.  The controller can also
 couple / enable the bridges which allows traffic to pass through the
 bridge normally.
 
+Xilinx LogiCORE Dynamic Function eXchange(DFX) AXI shutdown manager
+Softcore is compatible with the Xilinx LogiCORE pr-decoupler.
+
+The Dynamic Function eXchange AXI shutdown manager prevents AXI traffic
+from passing through the bridge. The controller safely handles AXI4MM
+and AXI4-Lite interfaces on a Reconfigurable Partition when it is
+undergoing dynamic reconfiguration, preventing the system deadlock
+that can occur if AXI transactions are interrupted by DFX
+
 The Driver supports only MMIO handling. A PR region can have multiple
 PR Decouplers which can be handled independently or chained via decouple/
 decouple_status signals.
 
 Required properties:
 - compatible           : Should contain "xlnx,pr-decoupler-1.00" followed by
-                          "xlnx,pr-decoupler"
+                          "xlnx,pr-decoupler" or
+                          "xlnx,dfx-axi-shutdown-manager-1.00" followed by
+                          "xlnx,dfx-axi-shutdown-manager"
 - regs                 : base address and size for decoupler module
 - clocks               : input clock to IP
 - clock-names          : should contain "aclk"
@@ -22,6 +33,7 @@ See Documentation/devicetree/bindings/fpga/fpga-region.txt and
 Documentation/devicetree/bindings/fpga/fpga-bridge.txt for generic bindings.
 
 Example:
+Partial Reconfig Decoupler:
        fpga-bridge@100000450 {
                compatible = "xlnx,pr-decoupler-1.00",
                             "xlnx-pr-decoupler";
@@ -30,3 +42,13 @@ Example:
                clock-names = "aclk";
                bridge-enable = <0>;
        };
+
+Dynamic Function eXchange AXI shutdown manager:
+       fpga-bridge@100000450 {
+               compatible = "xlnx,dfx-axi-shutdown-manager-1.00",
+                            "xlnx,dfx-axi-shutdown-manager";
+               regs = <0x10000045 0x10>;
+               clocks = <&clkc 15>;
+               clock-names = "aclk";
+               bridge-enable = <0>;
+       };