[PATCH v4 1/3] dt-bindings: i2c-ast2600: Add support for AST2600 I2C global controller

[Ryan Chen]

AST2600 I2C global register controller, add bindings document
to support driver of i2c global register set.

Signed-off-by: Ryan Chen <ryan_chen at aspeedtech.com>
---
 .../i2c/aspeed,i2c-ast2600-global.yaml        | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600-global.yaml

diff --git a/Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600-global.yaml b/Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600-global.yaml
new file mode 100644
index 000000000000..d92a0878d03b
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600-global.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/aspeed,i2c-ast2600-global.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AST2600 I2C Global Register on the AST26XX SoCs Device Tree Bindings
+
+maintainers:
+  - Ryan Chen <ryan_chen at aspeedtech.com>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - aspeed,ast2600-i2c-global
+
+  reg:
+    minItems: 1
+    items:
+      - description: address offset and range of bus
+      - description: address offset and range of bus buffer
+
+  resets:
+    maxItems: 1
+
+required:
+  - reg
+  - compatible
+  - resets
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/ast2600-clock.h>
+
+    i2c_gr: i2c-global-regs at 0 {
+      compatible = "aspeed,ast2600-i2c-global", "syscon";
+      reg = <0x0 0x20>;
+      resets = <&syscon ASPEED_RESET_I2C>;
+    };
-- 
2.34.1