dt-bindings: PCI: uniphier-ep: Clean up reg, clocks, resets, and their names

Instead of "oneOf:" choices, use "allOf:" and "if:" to define reg, clocks,
resets, and their names that can be taken by the compatible string.

The order of their names doesn't change here.

Link: https://lore.kernel.org/r/20221223070713.20549-2-hayashi.kunihiko@socionext.com
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml

@@ -15,9 +15,6 @@ description: |
 maintainers:
   - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
 
-allOf:
-  - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
-
 properties:
   compatible:
     enum:
@@ -29,40 +26,25 @@ properties:
     maxItems: 5
 
   reg-names:
-    oneOf:
-      - items:
-          - const: dbi
-          - const: dbi2
-          - const: link
-          - const: addr_space
-      - items:
-          - const: dbi
-          - const: dbi2
-          - const: link
-          - const: addr_space
-          - const: atu
+    minItems: 4
+    items:
+      - const: dbi
+      - const: dbi2
+      - const: link
+      - const: addr_space
+      - const: atu
 
   clocks:
     minItems: 1
     maxItems: 2
 
-  clock-names:
-    oneOf:
-      - items:              # for Pro5
-          - const: gio
-          - const: link
-      - const: link         # for NX1
+  clock-names: true
 
   resets:
     minItems: 1
     maxItems: 2
 
-  reset-names:
-    oneOf:
-      - items:              # for Pro5
-          - const: gio
-          - const: link
-      - const: link         # for NX1
+  reset-names: true
 
   num-ib-windows:
     const: 16
@@ -78,6 +60,46 @@ properties:
   phy-names:
     const: pcie-phy
 
+allOf:
+  - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: socionext,uniphier-pro5-pcie-ep
+    then:
+      properties:
+        reg:
+          maxItems: 4
+        reg-names:
+          maxItems: 4
+        clocks:
+          minItems: 2
+        clock-names:
+          items:
+            - const: gio
+            - const: link
+        resets:
+          minItems: 2
+        reset-names:
+          items:
+            - const: gio
+            - const: link
+    else:
+      properties:
+        reg:
+          minItems: 5
+        reg-names:
+          minItems: 5
+        clocks:
+          maxItems: 1
+        clock-names:
+          const: link
+        resets:
+          maxItems: 1
+        reset-names:
+          const: link
+
 required:
   - compatible
   - reg