dt-bindings: clock: socfpga: convert to yaml

Convert the clock device tree bindings to yaml for the Altera SoCFPGA
Cyclone5, Arria5, and Arria10 chip families. Since the clock nodes are
subnodes to Altera SOCFPGA Clock Manager, the yaml was added to
socfpga-clk-manager.yaml.

Signed-off-by: Matthew Gerlach <[email protected]>
Signed-off-by: Dinh Nguyen <[email protected]>

Author: fpgamatt

Documentation/devicetree/bindings/arm/altera/socfpga-clk-manager.yaml

@@ -9,20 +9,120 @@ title: Altera SOCFPGA Clock Manager
 maintainers:
   - Dinh Nguyen <[email protected]>
 
-description: test
+description:
+  This binding describes the Altera SOCFGPA Clock Manager and its associated
+  tree of clocks, pll's, and clock gates for the Cyclone5, Arria5 and Arria10
+  chip families.
 
 properties:
   compatible:
     items:
       - const: altr,clk-mgr
+
   reg:
     maxItems: 1
 
+  clocks:
+    type: object
+    additionalProperties: false
+
+    properties:
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 0
+
+    patternProperties:
+      "^osc[0-9]$":
+        type: object
+
+      "^[a-z0-9,_]+(clk|pll|clk_gate|clk_divided)(@[a-f0-9]+)?$":
+        type: object
+        $ref: '#/$defs/clock-props'
+        unevaluatedProperties: false
+
+        properties:
+          compatible:
+            enum:
+              - altr,socfpga-pll-clock
+              - altr,socfpga-perip-clk
+              - altr,socfpga-gate-clk
+              - altr,socfpga-a10-pll-clock
+              - altr,socfpga-a10-perip-clk
+              - altr,socfpga-a10-gate-clk
+              - fixed-clock
+
+          clocks:
+            description: one or more phandles to input clock
+            minItems: 1
+            maxItems: 5
+
+          "#address-cells":
+            const: 1
+
+          "#size-cells":
+            const: 0
+
+        patternProperties:
+          "^[a-z0-9,_]+(clk|pll)(@[a-f0-9]+)?$":
+            type: object
+            $ref: '#/$defs/clock-props'
+            unevaluatedProperties: false
+
+            properties:
+              compatible:
+                enum:
+                  - altr,socfpga-perip-clk
+                  - altr,socfpga-gate-clk
+                  - altr,socfpga-a10-perip-clk
+                  - altr,socfpga-a10-gate-clk
+
+              clocks:
+                description: one or more phandles to input clock
+                minItems: 1
+                maxItems: 4
+
+            required:
+              - compatible
+              - clocks
+              - "#clock-cells"
+
+        required:
+          - compatible
+          - "#clock-cells"
+
 required:
   - compatible
+  - reg
 
 additionalProperties: false
 
+$defs:
+  clock-props:
+    properties:
+      reg:
+        maxItems: 1
+
+      "#clock-cells":
+        const: 0
+
+      clk-gate:
+        $ref: /schemas/types.yaml#/definitions/uint32-array
+        items:
+          - description: gating register offset
+          - description: bit index
+
+      div-reg:
+        $ref: /schemas/types.yaml#/definitions/uint32-array
+        items:
+          - description: divider register offset
+          - description: bit shift
+          - description: bit width
+
+      fixed-divider:
+        $ref: /schemas/types.yaml#/definitions/uint32
+
 examples:
   - |
     clkmgr@ffd04000 {