[PATCH 4/6] dt-bindings: interrupt-controller: Add Loongson PCH PIC

[Jiaxun Yang]

Add binding for Loongson PCH PIC Controller.

Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
---
 .../loongson,pch-pic.yaml                     | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/loongson,pch-pic.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-pic.yaml b/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-pic.yaml
new file mode 100644
index 000000000000..afc0c924e477
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-pic.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/interrupt-controller/loongson,pch-pic.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: Loongson PCH PIC Controller
+
+maintainers:
+  - Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
+
+allOf:
+  - $ref: /schemas/interrupt-controller.yaml#
+
+description: |
+  This interrupt controller is found in the Loongson-7A family of PCH for
+  transforming interrupts from on-chip devices into HyperTransport vectorized
+  interrupts.
+
+properties:
+  compatible:
+    const: loongson,pch-pic-1.0
+
+  reg:
+    maxItems: 1
+
+  loongson,pic-base-vec:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description: |
+      u32 value of the base of parent HyperTransport vector allocated
+      to PCH PIC.
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 2
+
+required:
+  - compatible
+  - reg
+  - interrupt-controller
+  - '#interrupt-cells'
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    pic: interrupt-controller@10000000 {
+      compatible = "loongson,pch-pic-1.0";
+      reg = <0x10000000 0x400>;
+      interrupt-controller;
+      #interrupt-cells = <2>;
+      loongson,pic-base-vec = <64>;
+      interrupt-parent = <&htvec>;
+    };
+...
-- 
2.26.0.rc2