dt-bindings: i2c: Convert Synquacer I2C to DT schema

Convert the Socionext Synquacer I2C binding to DT schema format.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221209171658.3352119-1-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

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

-Socionext SynQuacer I2C
-
-Required properties:
-- compatible      : Must be "socionext,synquacer-i2c"
-- reg             : Offset and length of the register set for the device
-- interrupts      : A single interrupt specifier
-- #address-cells  : Must be <1>;
-- #size-cells     : Must be <0>;
-- clock-names     : Must contain "pclk".
-- clocks          : Must contain an entry for each name in clock-names.
-                    (See the common clock bindings.)
-
-Optional properties:
-- clock-frequency : Desired I2C bus clock frequency in Hz. As only Normal and
-                    Fast modes are supported, possible values are 100000 and
-                    400000.
-
-Example :
-
-    i2c@51210000 {
-        compatible = "socionext,synquacer-i2c";
-        reg = <0x51210000 0x1000>;
-        interrupts = <GIC_SPI 165 IRQ_TYPE_LEVEL_HIGH>;
-        #address-cells = <1>;
-        #size-cells = <0>;
-        clock-names = "pclk";
-        clocks = <&clk_i2c>;
-        clock-frequency = <400000>;
-    };

Documentation/devicetree/bindings/i2c/socionext,synquacer-i2c.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/socionext,synquacer-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Socionext SynQuacer I2C Controller
+
+maintainers:
+  - Ard Biesheuvel <ardb@kernel.org>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    const: socionext,synquacer-i2c
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: pclk
+
+  clock-frequency:
+    minimum: 100000
+    maximum: 400000
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    i2c@51210000 {
+        compatible = "socionext,synquacer-i2c";
+        reg = <0x51210000 0x1000>;
+        interrupts = <GIC_SPI 165 IRQ_TYPE_LEVEL_HIGH>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        clock-names = "pclk";
+        clocks = <&clk_i2c>;
+        clock-frequency = <400000>;
+    };
+...

MAINTAINERS

@@ -19310,7 +19310,7 @@ SOCIONEXT SYNQUACER I2C DRIVER
 M:	Ard Biesheuvel <ardb@kernel.org>
 L:	linux-i2c@vger.kernel.org
 S:	Maintained
-F:	Documentation/devicetree/bindings/i2c/i2c-synquacer.txt
+F:	Documentation/devicetree/bindings/i2c/socionext,synquacer-i2c.yaml
 F:	drivers/i2c/busses/i2c-synquacer.c
 
 SOCIONEXT UNIPHIER SOUND DRIVER