dt-bindings: fpga: xilinx-pr-decoupler: convert bindings to json-schema

Convert xilinx-pr-decoupler bindings to DT schema format using json-schema
Signed-off-by: Nava kishore Manne <nava.kishore.manne@amd.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230224111825.161593-1-nava.kishore.manne@amd.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt

-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.
-
-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" 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"
-
-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";
-		regs = <0x10000045 0x10>;
-		clocks = <&clkc 15>;
-		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>;
-	};

Documentation/devicetree/bindings/fpga/xlnx,pr-decoupler.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/fpga/xlnx,pr-decoupler.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx LogiCORE Partial Reconfig Decoupler/AXI shutdown manager Softcore
+
+maintainers:
+  - Nava kishore Manne <nava.kishore.manne@amd.com>
+
+description: |
+  The Xilinx LogiCORE Partial Reconfig(PR) 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.
+  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.
+  Please refer to fpga-region.txt and fpga-bridge.txt in this directory for
+  common binding part and usage.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: xlnx,pr-decoupler-1.00
+          - const: xlnx,pr-decoupler
+      - items:
+          - const: xlnx,dfx-axi-shutdown-manager-1.00
+          - const: xlnx,dfx-axi-shutdown-manager
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: aclk
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    fpga-bridge@100000450 {
+      compatible = "xlnx,pr-decoupler-1.00", "xlnx,pr-decoupler";
+      reg = <0x10000045 0x10>;
+      clocks = <&clkc 15>;
+      clock-names = "aclk";
+    };
+...