dt-bindings: ipmi: Convert aspeed,ast2400-ibt-bmc to DT schema

Convert the aspeed,ast2400-ibt-bmc binding to DT schema format. It's a
straight-forward conversion.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Message-ID: <20251014152948.3782738-1-robh@kernel.org>
Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Corey Minyard <corey@minyard.net>

Documentation/devicetree/bindings/ipmi/aspeed,ast2400-ibt-bmc.txt

@@ -1,28 +0,0 @@
-* Aspeed BT (Block Transfer) IPMI interface
-
-The Aspeed SOCs (AST2400 and AST2500) are commonly used as BMCs
-(BaseBoard Management Controllers) and the BT interface can be used to
-perform in-band IPMI communication with their host.
-
-Required properties:
-
-- compatible : should be one of
-	"aspeed,ast2400-ibt-bmc"
-	"aspeed,ast2500-ibt-bmc"
-	"aspeed,ast2600-ibt-bmc"
-- reg: physical address and size of the registers
-- clocks: clock for the device
-
-Optional properties:
-
-- interrupts: interrupt generated by the BT interface. without an
-  interrupt, the driver will operate in poll mode.
-
-Example:
-
-	ibt@1e789140 {
-		compatible = "aspeed,ast2400-ibt-bmc";
-		reg = <0x1e789140 0x18>;
-		interrupts = <8>;
-		clocks = <&syscon ASPEED_CLK_GATE_LCLK>;
-	};

Documentation/devicetree/bindings/ipmi/aspeed,ast2400-ibt-bmc.yaml

@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ipmi/aspeed,ast2400-ibt-bmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Aspeed Block Transfer (BT) IPMI interface
+
+maintainers:
+  - Joel Stanley <joel@jms.id.au>
+
+properties:
+  compatible:
+    enum:
+      - aspeed,ast2400-ibt-bmc
+      - aspeed,ast2500-ibt-bmc
+      - aspeed,ast2600-ibt-bmc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/aspeed-clock.h>
+
+    bt@1e789140 {
+        compatible = "aspeed,ast2400-ibt-bmc";
+        reg = <0x1e789140 0x18>;
+        interrupts = <8>;
+        clocks = <&syscon ASPEED_CLK_GATE_LCLK>;
+    };