dts: bindings: Add interrupt-nexus and io-channel-nexus base bindings

Add a base binding for interrupt and io-channel nexus nodes.
This makes the implicit definitions explicit.
Replace existing individual map definitions with this.

This file does not define a specific `compatible` on its own,
So you should include this file before using it practically.

Signed-off-by: TOKITA Hiroshi <[email protected]>

Author: soburi

dts/bindings/adc/arduino,uno-adc.yaml

@@ -13,20 +13,4 @@ description: |
 
 compatible: "arduino,uno-adc"
 
-include: base.yaml
-
-properties:
-  io-channel-map:
-    type: compound
-    required: true
-
-  io-channel-map-mask:
-    type: compound
-
-  io-channel-map-pass-thru:
-    type: compound
-
-  "#io-channel-cells":
-    type: int
-    required: true
-    description: Number of items to expect in an ADC specifier
+include: [base.yaml, io-channel-nexus.yaml]

dts/bindings/iio/io-channel-nexus.yaml

@@ -0,0 +1,24 @@
+# Copyright (c) 2025 TOKITA Hiroshi
+# SPDX-License-Identifier: Apache-2.0
+
+# Common fields for io-channel nexus
+#
+# see 2.5 Nexus Nodes and Specifier Mapping
+# https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#nexus-nodes-and-specifier-mapping
+# in the Devicetree Specification
+
+properties:
+  io-channel-map:
+    type: compound
+    required: true
+
+  io-channel-map-mask:
+    type: array
+
+  io-channel-map-pass-thru:
+    type: array
+
+  "#io-channel-cells":
+    type: int
+    required: true
+    description: Number of items to expect in the io-channel specifier, such as ADC channels.

dts/bindings/interrupt-controller/interrupt-nexus.yaml

@@ -0,0 +1,24 @@
+# Copyright (c) 2025 TOKITA Hiroshi
+# SPDX-License-Identifier: Apache-2.0
+
+# Common fields for interrupt nexus nodes
+#
+# See 2.4 Interrupts and Interrupt Mapping
+# https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#interrupts-and-interrupt-mapping
+# in the Devicetree Specification
+
+properties:
+  interrupt-map:
+    type: compound
+    required: true
+
+  interrupt-map-mask:
+    type: array
+
+  interrupt-map-pass-thru:
+    type: array
+
+  "#interrupt-cells":
+    type: int
+    required: true
+    description: Number of items to expect in a interrupt specifier

dts/bindings/pcie/host/pci-host-ecam-generic.yaml

@@ -5,7 +5,7 @@ description: PCIe Controller in ECAM mode
 
 compatible: "pci-host-ecam-generic"
 
-include: pcie-controller.yaml
+include: [pcie-controller.yaml, interrupt-nexus.yaml]
 
 properties:
   reg:
@@ -22,11 +22,5 @@ properties:
       definition of non-prefetchable memory. One or both of prefetchable Memory
       and IO Space may also be provided.
 
-  interrupt-map-mask:
-    type: array
-
-  interrupt-map:
-    type: compound
-
   bus-range:
     type: array