dt-bindings: pci: apple,pcie: Add t6000 support

This new SoC is compatible with the existing driver, but the block
supports 4 downstream ports, so we need to adjust the binding to
allow that.

Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

Documentation/devicetree/bindings/pci/apple,pcie.yaml

@@ -28,19 +28,17 @@ description: |
   distributed over the root ports as the OS sees fit by programming
   the PCIe controller's port registers.
 
-allOf:
-  - $ref: /schemas/pci/pci-bus.yaml#
-  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
-
 properties:
   compatible:
     items:
-      - const: apple,t8103-pcie
+      - enum:
+          - apple,t8103-pcie
+          - apple,t6000-pcie
       - const: apple,pcie
 
   reg:
     minItems: 3
-    maxItems: 5
+    maxItems: 6
 
   reg-names:
     minItems: 3
@@ -50,6 +48,7 @@ properties:
       - const: port0
       - const: port1
       - const: port2
+      - const: port3
 
   ranges:
     minItems: 2
@@ -59,7 +58,7 @@ properties:
     description:
       Interrupt specifiers, one for each root port.
     minItems: 1
-    maxItems: 3
+    maxItems: 4
 
   msi-parent: true
 
@@ -81,6 +80,21 @@ required:
 
 unevaluatedProperties: false
 
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: apple,t8103-pcie
+    then:
+      properties:
+        reg:
+          maxItems: 5
+        interrupts:
+          maxItems: 3
+
 examples:
   - |
     #include <dt-bindings/interrupt-controller/apple-aic.h>