[PATCH 1/3] dt-bindings: riscv: Add DT documentation for SiFive Bus Error Unit

[Yash Shah]

Add DT json-schema for SiFive Bus Error unit present in FU740-C000 chip

Signed-off-by: Yash Shah <yash.shah at sifive.com>
---
 .../devicetree/bindings/riscv/sifive-beu.yaml      | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/riscv/sifive-beu.yaml

diff --git a/Documentation/devicetree/bindings/riscv/sifive-beu.yaml b/Documentation/devicetree/bindings/riscv/sifive-beu.yaml
new file mode 100644
index 0000000..4697787
--- /dev/null
+++ b/Documentation/devicetree/bindings/riscv/sifive-beu.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2020 SiFive, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/riscv/sifive-beu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive BUS Error Unit
+
+maintainers:
+  - Yash Shah <yash.shah at sifive.com>
+  - Paul Walmsley <paul.walmsley at sifive.com>
+
+description:
+  The Bus-Error Unit (BEU) is a per-processor device that records erroneous
+  events and reports them using platform-level and hart-local interrupts. The
+  BEU can be configured to generate interrupts on correctable memory errors,
+  uncorrectable memory errors, and/or TileLink bus errors.
+  All the properties in ePAPR/DeviceTree specification applies for this platform.
+
+properties:
+  compatible:
+    items:
+      - const: sifive,fu740-c000-beu
+      - const: sifive,beu0
+
+  interrupts:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+additionalProperties: false
+
+required:
+  - compatible
+  - interrupts
+  - reg
+
+examples:
+  - |
+    bus-error-unit at 1700000 {
+        compatible = "sifive,fu740-c000-beu", "sifive,beu0";
+        reg = <0x1700000 0x1000>;
+        interrupt-parent = <&plic0>;
+        interrupts = <65>;
+    };
-- 
2.7.4