dt-bindings: remoteproc: qcom,smd-edge: define children

SMD edge contains subnodes representing devices related to the remote
processor.  With limietd number of remote processors, there is a limited
set of such devices.

List all of them in smd-edge bindings so schema can strictly check for
subnodes.

Additional benefit is requirement of "qcom,smd-channels" for such
subnodes, because their schema cannot enforce it (few devices like APR
or FastRPC can be part of either SMD or GLINK edge).
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220909125403.803158-8-krzysztof.kozlowski@linaro.orgSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/remoteproc/qcom,smd-edge.yaml

@@ -13,12 +13,30 @@ description:
   Qualcomm SMD subnode represents a remote subsystem or a remote processor of
   some sort - or in SMD language an "edge". The name of the edges are not
   important.
+
+  In turn, subnodes of the "edges" represent devices tied to SMD channels on
+  that "edge". The names of the devices are not important. The properties of
+  these nodes are defined by the individual bindings for the SMD devices.
   See also Documentation/devicetree/bindings/soc/qcom/qcom,smd.yaml
 
 properties:
   $nodename:
     const: "smd-edge"
 
+  apr:
+    $ref: /schemas/soc/qcom/qcom,apr.yaml#
+    required:
+      - qcom,smd-channels
+    description:
+      Qualcomm APR/GPR (Asynchronous/Generic Packet Router)
+
+  fastrpc:
+    $ref: /schemas/misc/qcom,fastrpc.yaml#
+    required:
+      - qcom,smd-channels
+    description:
+      Qualcomm FastRPC
+
   interrupts:
     maxItems: 1
 
@@ -56,6 +74,20 @@ properties:
       The identifier for the remote processor as known by the rest of the
       system.
 
+  rpm-requests:
+    $ref: /schemas/soc/qcom/qcom,smd-rpm.yaml#
+    required:
+      - qcom,smd-channels
+    description:
+      Qualcomm Resource Power Manager (RPM) over SMD.
+
+  wcnss:
+    $ref: /schemas/soc/qcom/qcom,wcnss.yaml
+    required:
+      - qcom,smd-channels
+    description:
+      Qualcomm WCNSS for Bluetooth, WiFi and FM radio.
+
 required:
   - interrupts
   - qcom,smd-edge
@@ -66,7 +98,7 @@ oneOf:
   - required:
       - qcom,ipc
 
-additionalProperties: true
+additionalProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/soc/qcom/qcom,smd.yaml

@@ -22,37 +22,12 @@ properties:
 patternProperties:
   "^smd-edge|rpm$":
     $ref: /schemas/remoteproc/qcom,smd-edge.yaml#
+    unevaluatedProperties: false
     description:
       Each subnode of the SMD node represents a remote subsystem or a remote
       processor of some sort - or in SMD language an "edge". The name of the
       edges are not important.
 
-    properties:
-      rpm-requests:
-        type: object
-        description:
-          In turn, subnodes of the "edges" represent devices tied to SMD
-          channels on that "edge". The names of the devices are not
-          important. The properties of these nodes are defined by the
-          individual bindings for the SMD devices.
-
-        properties:
-          qcom,smd-channels:
-            $ref: /schemas/types.yaml#/definitions/string-array
-            minItems: 1
-            maxItems: 32
-            description:
-              A list of channels tied to this device, used for matching the
-              device to channels.
-
-        required:
-          - compatible
-          - qcom,smd-channels
-
-        additionalProperties: true
-
-    unevaluatedProperties: false
-
 required:
   - compatible