dt-bindings: clocks: at91sam9x5-sckc: convert to yaml

Convert Atmel slow clock controller documentation to yaml.

Signed-off-by: Claudiu Beznea <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: claudiubeznea

Documentation/devicetree/bindings/clock/at91-clock.txt

@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/atmel,at91sam9x5-sckc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel Slow Clock Controller (SCKC)
+
+maintainers:
+  - Claudiu Beznea <[email protected]>
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - atmel,at91sam9x5-sckc
+          - atmel,sama5d3-sckc
+          - atmel,sama5d4-sckc
+          - microchip,sam9x60-sckc
+      - items:
+          - const: microchip,sama7g5-sckc
+          - const: microchip,sam9x60-sckc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  "#clock-cells":
+    enum: [0, 1]
+
+  atmel,osc-bypass:
+    type: boolean
+    description: set when a clock signal is directly provided on XIN
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - "#clock-cells"
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - microchip,sam9x60-sckc
+    then:
+      properties:
+        "#clock-cells":
+          const: 1
+    else:
+      properties:
+        "#clock-cells":
+          const: 0
+
+additionalProperties: false
+
+examples:
+  - |
+    clk32k: clock-controller@fffffe50 {
+        compatible = "microchip,sam9x60-sckc";
+        reg = <0xfffffe50 0x4>;
+        clocks = <&slow_xtal>;
+        #clock-cells = <1>;
+    };
+
+...