[PATCH V2 1/2] dt-bindings: interrupt-controller: Add Loongson EIOINTC

[Binbin Zhou]

Add Loongson Extended I/O Interrupt controller binding with DT schema
format using json-schema.

Signed-off-by: Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
---
 .../loongson,eiointc.yaml                     | 80 +++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/loongson,eiointc.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/loongson,eiointc.yaml b/Documentation/devicetree/bindings/interrupt-controller/loongson,eiointc.yaml
new file mode 100644
index 000000000000..88580297f955
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/loongson,eiointc.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/interrupt-controller/loongson,eiointc.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: Loongson Extended I/O Interrupt Controller
+
+maintainers:
+  - Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
+
+description: |
+  This interrupt controller is found on the Loongson-3 family chips and
+  Loongson-2K0500 chip and is used to distribute interrupts directly to
+  individual cores without forwarding them through the HT's interrupt line.
+
+allOf:
+  - $ref: /schemas/interrupt-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - loongson,eiointc-1.0
+
+  reg:
+    minItems: 1
+    maxItems: 3
+
+  interrupt-controller: true
+
+  interrupts:
+    description:
+      Interrupt source of the CPU interrupts.
+
+  interrupt-names:
+    description:
+      List of names for the parent interrupts.
+    items:
+      - const: int0
+
+  '#interrupt-cells':
+    const: 1
+
+  'loongson,eio-num-vecs':
+    description:
+      The number of devices supported by the extended I/O interrupt vector.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    minimum: 1
+    maximum: 256
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-controller
+  - '#interrupt-cells'
+  - 'loongson,eio-num-vecs'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    eiointc: interrupt-controller@1fe11600 {
+      compatible = "loongson,eiointc-1.0";
+      reg = <0x1fe11600 0x8
+             0x1fe11700 0x8
+             0x1fe11800 0x8>;
+
+      interrupt-controller;
+      #interrupt-cells = <1>;
+
+      interrupt-parent = <&cpuintc>;
+      interrupts = <3>;
+      interrupt-names = "int0";
+
+      loongson,eio-num-vecs = <128>;
+
+    };
+
+...
-- 
2.39.0