linux-kernel - [PATCH v4 04/10] dt-bindings: interrupt-controller: Add Loongson-3 HTPIC

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Message-ID: <20200221050942.507775-5-jiaxun.yang@flygoat.com>
Date:   Fri, 21 Feb 2020 13:09:19 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     linux-mips@...r.kernel.org
Cc:     Jiaxun Yang <jiaxun.yang@...goat.com>,
        Rob Herring <robh@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paulburton@...nel.org>,
        Huacai Chen <chenhc@...ote.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Allison Randal <allison@...utok.net>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH v4 04/10] dt-bindings: interrupt-controller: Add Loongson-3 HTPIC

Document Loongson-3 HyperTransport PIC controller.

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../interrupt-controller/loongson,htpic.yaml  | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/loongson,htpic.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/loongson,htpic.yaml b/Documentation/devicetree/bindings/interrupt-controller/loongson,htpic.yaml
new file mode 100644
index 000000000000..c8861cbbb8b5
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/loongson,htpic.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/interrupt-controller/loongson,htpic.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Loongson-3 HyperTransport Interrupt Controller
+
+maintainers:
+  - Jiaxun Yang <jiaxun.yang@...goat.com>
+
+allOf:
+  - $ref: /schemas/interrupt-controller.yaml#
+
+description: |
+  This interrupt controller is found in the Loongson-3 family of chips to transmit
+  interrupts from PCH PIC connected on HyperTransport bus.
+
+properties:
+  compatible:
+    const: loongson,htpic-1.0
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    minItems: 1
+    maxItems: 4
+    description: |
+      Four parent interrupts that receive chained interrupts.
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-controller
+  - '#interrupt-cells'
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    htintc: interrupt-controller@...000080 {
+      compatible = "loongson,htintc-1.0";
+      reg = <0xfb000080 0x40>;
+      interrupt-controller;
+      #interrupt-cells = <1>;
+
+      interrupt-parent = <&liointc>;
+      interrupts = <24 IRQ_TYPE_LEVEL_HIGH>,
+                    <25 IRQ_TYPE_LEVEL_HIGH>,
+                    <26 IRQ_TYPE_LEVEL_HIGH>,
+                    <27 IRQ_TYPE_LEVEL_HIGH>;
+    };
+...
-- 
2.25.0