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Date:   Fri,  1 May 2020 17:21:37 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     maz@...nel.org
Cc:     Jiaxun Yang <jiaxun.yang@...goat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Rob Herring <robh+dt@...nel.org>,
        Huacai Chen <chenhc@...ote.com>, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-mips@...r.kernel.org
Subject: [PATCH v3 6/6] dt-bindings: interrupt-controller: Add Loongson PCH MSI

Add binding for Loongson PCH MSI controller.

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
 .../loongson,pch-msi.yaml                     | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/loongson,pch-msi.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-msi.yaml b/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-msi.yaml
new file mode 100644
index 000000000000..513ed1933035
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-msi.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/interrupt-controller/loongson,pch-msi.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Loongson PCH MSI Controller
+
+maintainers:
+  - Jiaxun Yang <jiaxun.yang@...goat.com>
+
+description: |
+  This interrupt controller is found in the Loongson LS7A family of PCH for
+  transforming interrupts from PCIe MSI into HyperTransport vectorized
+  interrupts.
+
+properties:
+  compatible:
+    const: loongson,pch-msi-1.0
+
+  reg:
+    maxItems: 1
+
+  loongson,msi-base-vec:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description: |
+      u32 value of the base of parent HyperTransport vector allocated
+      to PCH MSI.
+
+  loongson,msi-num-vecs:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description: |
+      u32 value of the number of parent HyperTransport vectors allocated
+      to PCH MSI.
+
+  msi-controller: true
+
+required:
+  - compatible
+  - reg
+  - msi-controller
+  - loongson,msi-base-vec
+  - loongson,msi-num-vecs
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    msi: msi-controller@...00000 {
+      compatible = "loongson,pch-msi-1.0";
+      reg = <0x2ff00000 0x4>;
+      msi-controller;
+      loongson,msi-base-vec = <64>;
+      loongson,msi-num-vecs = <64>;
+      interrupt-parent = <&htvec>;
+    };
+...
-- 
2.26.0.rc2

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