dt-bindings: interconnect: qcom: Split out rpmh-common bindings

In preparation for the platforms, split out common definitions used in
rpmh-based interconnects.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220525144404.200390-3-luca.weiss@fairphone.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>

Documentation/devicetree/bindings/interconnect/qcom,rpmh-common.yaml

@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interconnect/qcom,rpmh-common.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm RPMh Network-On-Chip Interconnect
+
+maintainers:
+  - Georgi Djakov <djakov@kernel.org>
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description:
+  RPMh interconnect providers support system bandwidth requirements through
+  RPMh hardware accelerators known as Bus Clock Manager (BCM). The provider is
+  able to communicate with the BCM through the Resource State Coordinator (RSC)
+  associated with each execution environment. Provider nodes must point to at
+  least one RPMh device child node pertaining to their RSC and each provider
+  can map to multiple RPMh resources.
+
+properties:
+  '#interconnect-cells':
+    enum: [ 1, 2 ]
+
+  qcom,bcm-voters:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      maxItems: 1
+    maxItems: 2
+    description:
+      List of phandles to qcom,bcm-voter nodes that are required by
+      this interconnect to send RPMh commands.
+
+  qcom,bcm-voter-names:
+    maxItems: 2
+    description:
+      Names for each of the qcom,bcm-voters specified.
+
+required:
+  - '#interconnect-cells'
+  - qcom,bcm-voters
+
+additionalProperties: true

Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml

@@ -18,6 +18,9 @@ description: |
    least one RPMh device child node pertaining to their RSC and each provider
    can map to multiple RPMh resources.
 
+allOf:
+  - $ref: qcom,rpmh-common.yaml#
+
 properties:
   reg:
     maxItems: 1
@@ -130,28 +133,13 @@ properties:
       - qcom,sm8450-pcie-anoc
       - qcom,sm8450-system-noc
 
-  '#interconnect-cells':
-    enum: [ 1, 2 ]
-
-  qcom,bcm-voters:
-    $ref: /schemas/types.yaml#/definitions/phandle-array
-    items:
-      maxItems: 1
-    description: |
-      List of phandles to qcom,bcm-voter nodes that are required by
-      this interconnect to send RPMh commands.
-
-  qcom,bcm-voter-names:
-    description: |
-      Names for each of the qcom,bcm-voters specified.
+  '#interconnect-cells': true
 
 required:
   - compatible
   - reg
-  - '#interconnect-cells'
-  - qcom,bcm-voters
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |