dt-bindings: PCI: xilinx-cpm: Add Versal CPM5 Root Port

Xilinx Versal Premium series has CPM5 block which supports Root Port
functionality at Gen5 speed.

Add support for YAML schemas documentation for Versal CPM5 Root Port driver.

Link: https://lore.kernel.org/r/20220705105646.16980-2-bharat.kumar.gogada@xilinx.com
Signed-off-by: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml

@@ -14,17 +14,23 @@ allOf:
 
 properties:
   compatible:
-    const: xlnx,versal-cpm-host-1.00
+    enum:
+      - xlnx,versal-cpm-host-1.00
+      - xlnx,versal-cpm5-host
 
   reg:
     items:
       - description: CPM system level control and status registers.
       - description: Configuration space region and bridge registers.
+      - description: CPM5 control and status registers.
+    minItems: 2
 
   reg-names:
     items:
       - const: cpm_slcr
       - const: cfg
+      - const: cpm_csr
+    minItems: 2
 
   interrupts:
     maxItems: 1
@@ -95,4 +101,34 @@ examples:
                                interrupt-controller;
                        };
                };
+
+               cpm5_pcie: pcie@fcdd0000 {
+                       compatible = "xlnx,versal-cpm5-host";
+                       device_type = "pci";
+                       #address-cells = <3>;
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       interrupts = <0 72 4>;
+                       interrupt-parent = <&gic>;
+                       interrupt-map-mask = <0 0 0 7>;
+                       interrupt-map = <0 0 0 1 &pcie_intc_1 0>,
+                                       <0 0 0 2 &pcie_intc_1 1>,
+                                       <0 0 0 3 &pcie_intc_1 2>,
+                                       <0 0 0 4 &pcie_intc_1 3>;
+                       bus-range = <0x00 0xff>;
+                       ranges = <0x02000000 0x0 0xe0000000 0x0 0xe0000000 0x0 0x10000000>,
+                                <0x43000000 0x80 0x00000000 0x80 0x00000000 0x0 0x80000000>;
+                       msi-map = <0x0 &its_gic 0x0 0x10000>;
+                       reg = <0x00 0xfcdd0000 0x00 0x1000>,
+                             <0x06 0x00000000 0x00 0x1000000>,
+                             <0x00 0xfce20000 0x00 0x1000000>;
+                       reg-names = "cpm_slcr", "cfg", "cpm_csr";
+
+                       pcie_intc_1: interrupt-controller {
+                               #address-cells = <0>;
+                               #interrupt-cells = <1>;
+                               interrupt-controller;
+                       };
+               };
+
     };