dt-bindings: i2c: i2c-wmt: Convert to YAML

Rewrite the textual description for the WonderMedia I2C controller
as YAML schema, and switch the filename to follow the compatible
string.

The controller only supports two bus speeds (100kHz and 400kHz)
so restrict clock-frequency values accordingly.

Reviewed-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Alexey Charkov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Andi Shyti <[email protected]>

Author: alchark

Documentation/devicetree/bindings/i2c/i2c-wmt.txt

@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/wm,wm8505-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: I2C Controller on WonderMedia WM8505 and related SoCs
+
+maintainers:
+  - Alexey Charkov <[email protected]>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    const: wm,wm8505-i2c
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-frequency:
+    enum: [100000, 400000]
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c_0: i2c@d8280000 {
+        compatible = "wm,wm8505-i2c";
+        reg = <0xd8280000 0x1000>;
+        interrupts = <19>;
+        clocks = <&clki2c0>;
+        clock-frequency = <400000>;
+    };

Documentation/devicetree/bindings/i2c/wm,wm8505-i2c.yaml

@@ -3434,7 +3434,7 @@ M:	Alexey Charkov <[email protected]>
 M:	Krzysztof Kozlowski <[email protected]>
 L:	[email protected] (moderated for non-subscribers)
 S:	Odd Fixes
-F:	Documentation/devicetree/bindings/i2c/i2c-wmt.txt
+F:	Documentation/devicetree/bindings/i2c/wm,wm8505-i2c.yaml
 F:	arch/arm/boot/dts/vt8500/
 F:	arch/arm/mach-vt8500/
 F:	drivers/clocksource/timer-vt8500.c