dt-bindings: clock: qoriq-clock: convert to yaml format

Convert qoria-clock DT binding to yaml format. Split to two files
qoriq-clock.yaml and qoriq-clock-legancy.yaml.

Addtional change:
- Remove clock consumer part in example
- Fixed example dts error
- Deprecated legancy node
- fsl,b4420-clockgen and fsl,b4860-clockgen fallback to fsl,b4-clockgen.

Signed-off-by: Frank Li <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

Documentation/devicetree/bindings/clock/fsl,qoriq-clock-legacy.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/fsl,qoriq-clock-legacy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Legacy Clock Block on Freescale QorIQ Platforms
+
+maintainers:
+  - Frank Li <[e-mail]>
+
+description: |
+  These nodes are deprecated.  Kernels should continue to support
+  device trees with these nodes, but new device trees should not use them.
+
+  Most of the bindings are from the common clock binding[1].
+  [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+properties:
+  compatible:
+    enum:
+      - fsl,qoriq-core-pll-1.0
+      - fsl,qoriq-core-pll-2.0
+      - fsl,qoriq-core-mux-1.0
+      - fsl,qoriq-core-mux-2.0
+      - fsl,qoriq-sysclk-1.0
+      - fsl,qoriq-sysclk-2.0
+      - fsl,qoriq-platform-pll-1.0
+      - fsl,qoriq-platform-pll-2.0
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 4
+
+  clock-names:
+    minItems: 1
+    maxItems: 4
+
+  clock-output-names:
+    minItems: 1
+    maxItems: 8
+
+  '#clock-cells':
+    minimum: 0
+    maximum: 1
+
+required:
+  - compatible
+  - '#clock-cells'
+
+additionalProperties: false
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,qoriq-sysclk-1.0
+              - fsl,qoriq-sysclk-2.0
+    then:
+      properties:
+        '#clock-cells':
+          const: 0
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,qoriq-core-pll-1.0
+              - fsl,qoriq-core-pll-2.0
+    then:
+      properties:
+        '#clock-cells':
+          const: 1
+          description: |
+            * 0 - equal to the PLL frequency
+            * 1 - equal to the PLL frequency divided by 2
+            * 2 - equal to the PLL frequency divided by 4
+

Documentation/devicetree/bindings/clock/fsl,qoriq-clock.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/fsl,qoriq-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock Block on Freescale QorIQ Platforms
+
+maintainers:
+  - Frank Li <[e-mail]>
+
+description: |
+  Freescale QorIQ chips take primary clocking input from the external
+  SYSCLK signal. The SYSCLK input (frequency) is multiplied using
+  multiple phase locked loops (PLL) to create a variety of frequencies
+  which can then be passed to a variety of internal logic, including
+  cores and peripheral IP blocks.
+  Please refer to the Reference Manual for details.
+
+  All references to "1.0" and "2.0" refer to the QorIQ chassis version to
+  which the chip complies.
+
+  Chassis Version    Example Chips
+  ---------------    -------------
+       1.0          p4080, p5020, p5040
+       2.0          t4240
+
+  Clock Provider
+
+  The clockgen node should act as a clock provider, though in older device
+  trees the children of the clockgen node are the clock providers.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - fsl,p2041-clockgen
+              - fsl,p3041-clockgen
+              - fsl,p4080-clockgen
+              - fsl,p5020-clockgen
+              - fsl,p5040-clockgen
+          - const: fsl,qoriq-clockgen-1.0
+      - items:
+          - enum:
+              - fsl,t1023-clockgen
+              - fsl,t1024-clockgen
+              - fsl,t1040-clockgen
+              - fsl,t1042-clockgen
+              - fsl,t2080-clockgen
+              - fsl,t2081-clockgen
+              - fsl,t4240-clockgen
+          - const: fsl,qoriq-clockgen-2.0
+      - items:
+          - enum:
+              - fsl,b4420-clockgen
+              - fsl,b4860-clockgen
+          - const: fsl,b4-clockgen
+      - items:
+          - enum:
+              - fsl,ls1012a-clockgen
+              - fsl,ls1021a-clockgen
+              - fsl,ls1028a-clockgen
+              - fsl,ls1043a-clockgen
+              - fsl,ls1046a-clockgen
+              - fsl,ls1088a-clockgen
+              - fsl,ls2080a-clockgen
+              - fsl,lx2160a-clockgen
+
+  reg:
+    maxItems: 1
+
+  ranges: true
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 1
+
+  '#clock-cells':
+    const: 2
+    description: |
+      The first cell of the clock specifier is the clock type, and the
+      second cell is the clock index for the specified type.
+
+        Type#  Name       Index Cell
+        0  sysclk          must be 0
+        1  cmux            index (n in CLKCnCSR)
+        2  hwaccel         index (n in CLKCGnHWACSR)
+        3  fman            0 for fm1, 1 for fm2
+        4  platform pll    n=pll/(n+1). For example, when n=1,
+                          that means output_freq=PLL_freq/2.
+        5  coreclk         must be 0
+
+  clock-frequency:
+    description: Input system clock frequency (SYSCLK)
+
+  clocks:
+    items:
+      - description:
+          sysclk may be provided as an input clock.  Either clock-frequency
+          or clocks must be provided.
+      - description:
+          A second input clock, called "coreclk", may be provided if
+          core PLLs are based on a different input clock from the
+          platform PLL.
+    minItems: 1
+
+  clock-names:
+    items:
+      - const: sysclk
+      - const: coreclk
+
+patternProperties:
+  '^mux[0-9]@[a-f0-9]+$':
+    deprecated: true
+    $ref: fsl,qoriq-clock-legacy.yaml
+
+  '^sysclk(-[a-z0-9]+)?$':
+    deprecated: true
+    $ref: fsl,qoriq-clock-legacy.yaml
+
+  '^pll[0-9]@[a-f0-9]+$':
+    deprecated: true
+    $ref: fsl,qoriq-clock-legacy.yaml
+
+  '^platform\-pll@[a-f0-9]+$':
+    deprecated: true
+    $ref: fsl,qoriq-clock-legacy.yaml
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    /* clock provider example */
+    global-utilities@e1000 {
+        compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0";
+        reg = <0xe1000 0x1000>;
+        clock-frequency = <133333333>;
+        #clock-cells = <2>;
+    };
+
+  - |
+    /* Legacy example */
+    global-utilities@e1000 {
+        compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0";
+        reg = <0xe1000 0x1000>;
+        ranges = <0x0 0xe1000 0x1000>;
+        clock-frequency = <133333333>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        #clock-cells = <2>;
+
+        sysclk: sysclk {
+            compatible = "fsl,qoriq-sysclk-1.0";
+            clock-output-names = "sysclk";
+            #clock-cells = <0>;
+        };
+
+        pll0: pll0@800 {
+            compatible = "fsl,qoriq-core-pll-1.0";
+            reg = <0x800 0x4>;
+            #clock-cells = <1>;
+            clocks = <&sysclk>;
+            clock-output-names = "pll0", "pll0-div2";
+        };
+
+        pll1: pll1@820 {
+            compatible = "fsl,qoriq-core-pll-1.0";
+            reg = <0x820 0x4>;
+            #clock-cells = <1>;
+            clocks = <&sysclk>;
+            clock-output-names = "pll1", "pll1-div2";
+        };
+
+        mux0: mux0@0 {
+            compatible = "fsl,qoriq-core-mux-1.0";
+            reg = <0x0 0x4>;
+            #clock-cells = <0>;
+            clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
+            clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
+            clock-output-names = "cmux0";
+        };
+
+        mux1: mux1@20 {
+            compatible = "fsl,qoriq-core-mux-1.0";
+            reg = <0x20 0x4>;
+            #clock-cells = <0>;
+            clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
+            clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
+            clock-output-names = "cmux1";
+        };
+
+        platform-pll@c00 {
+            #clock-cells = <1>;
+            reg = <0xc00 0x4>;
+            compatible = "fsl,qoriq-platform-pll-1.0";
+            clocks = <&sysclk>;
+            clock-output-names = "platform-pll", "platform-pll-div2";
+        };
+    };

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

···
-* Clock Block on Freescale QorIQ Platforms
-
-Freescale QorIQ chips take primary clocking input from the external
-SYSCLK signal. The SYSCLK input (frequency) is multiplied using
-multiple phase locked loops (PLL) to create a variety of frequencies
-which can then be passed to a variety of internal logic, including
-cores and peripheral IP blocks.
-Please refer to the Reference Manual for details.
-
-All references to "1.0" and "2.0" refer to the QorIQ chassis version to
-which the chip complies.
-
-Chassis Version		Example Chips
----------------		-------------
-1.0			p4080, p5020, p5040
-2.0			t4240, b4860
-
-1. Clock Block Binding
-
-Required properties:
-- compatible: Should contain a chip-specific clock block compatible
-	string and (if applicable) may contain a chassis-version clock
-	compatible string.
-
-	Chip-specific strings are of the form "fsl,<chip>-clockgen", such as:
-	* "fsl,p2041-clockgen"
-	* "fsl,p3041-clockgen"
-	* "fsl,p4080-clockgen"
-	* "fsl,p5020-clockgen"
-	* "fsl,p5040-clockgen"
-	* "fsl,t1023-clockgen"
-	* "fsl,t1024-clockgen"
-	* "fsl,t1040-clockgen"
-	* "fsl,t1042-clockgen"
-	* "fsl,t2080-clockgen"
-	* "fsl,t2081-clockgen"
-	* "fsl,t4240-clockgen"
-	* "fsl,b4420-clockgen"
-	* "fsl,b4860-clockgen"
-	* "fsl,ls1012a-clockgen"
-	* "fsl,ls1021a-clockgen"
-	* "fsl,ls1028a-clockgen"
-	* "fsl,ls1043a-clockgen"
-	* "fsl,ls1046a-clockgen"
-	* "fsl,ls1088a-clockgen"
-	* "fsl,ls2080a-clockgen"
-	* "fsl,lx2160a-clockgen"
-	Chassis-version clock strings include:
-	* "fsl,qoriq-clockgen-1.0": for chassis 1.0 clocks
-	* "fsl,qoriq-clockgen-2.0": for chassis 2.0 clocks
-- reg: Describes the address of the device's resources within the
-	address space defined by its parent bus, and resource zero
-	represents the clock register set
-
-Optional properties:
-- ranges: Allows valid translation between child's address space and
-	parent's. Must be present if the device has sub-nodes.
-- #address-cells: Specifies the number of cells used to represent
-	physical base addresses.  Must be present if the device has
-	sub-nodes and set to 1 if present
-- #size-cells: Specifies the number of cells used to represent
-	the size of an address. Must be present if the device has
-	sub-nodes and set to 1 if present
-- clock-frequency: Input system clock frequency (SYSCLK)
-- clocks: If clock-frequency is not specified, sysclk may be provided
-	as an input clock.  Either clock-frequency or clocks must be
-	provided.
-	A second input clock, called "coreclk", may be provided if
-	core PLLs are based on a different input clock from the
-	platform PLL.
-- clock-names: Required if a coreclk is present.  Valid names are
-	"sysclk" and "coreclk".
-
-2. Clock Provider
-
-The clockgen node should act as a clock provider, though in older device
-trees the children of the clockgen node are the clock providers.
-
-When the clockgen node is a clock provider, #clock-cells = <2>.
-The first cell of the clock specifier is the clock type, and the
-second cell is the clock index for the specified type.
-
-	Type#	Name		Index Cell
-	0	sysclk		must be 0
-	1	cmux		index (n in CLKCnCSR)
-	2	hwaccel		index (n in CLKCGnHWACSR)
-	3	fman		0 for fm1, 1 for fm2
-	4	platform pll	n=pll/(n+1). For example, when n=1,
-				that means output_freq=PLL_freq/2.
-	5	coreclk		must be 0
-
-3. Example
-
-	clockgen: global-utilities@e1000 {
-		compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0";
-		clock-frequency = <133333333>;
-		reg = <0xe1000 0x1000>;
-		#clock-cells = <2>;
-	};
-
-	fman@400000 {
-		...
-		clocks = <&clockgen 3 0>;
-		...
-	};
-}
-4. Legacy Child Nodes
-
-NOTE: These nodes are deprecated.  Kernels should continue to support
-device trees with these nodes, but new device trees should not use them.
-
-Most of the bindings are from the common clock binding[1].
- [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-Required properties:
-- compatible : Should include one of the following:
-	* "fsl,qoriq-core-pll-1.0" for core PLL clocks (v1.0)
-	* "fsl,qoriq-core-pll-2.0" for core PLL clocks (v2.0)
-	* "fsl,qoriq-core-mux-1.0" for core mux clocks (v1.0)
-	* "fsl,qoriq-core-mux-2.0" for core mux clocks (v2.0)
-	* "fsl,qoriq-sysclk-1.0": for input system clock (v1.0).
-		It takes parent's clock-frequency as its clock.
-	* "fsl,qoriq-sysclk-2.0": for input system clock (v2.0).
-		It takes parent's clock-frequency as its clock.
-	* "fsl,qoriq-platform-pll-1.0" for the platform PLL clock (v1.0)
-	* "fsl,qoriq-platform-pll-2.0" for the platform PLL clock (v2.0)
-- #clock-cells: From common clock binding. The number of cells in a
-	clock-specifier. Should be <0> for "fsl,qoriq-sysclk-[1,2].0"
-	clocks, or <1> for "fsl,qoriq-core-pll-[1,2].0" clocks.
-	For "fsl,qoriq-core-pll-[1,2].0" clocks, the single
-	clock-specifier cell may take the following values:
-	* 0 - equal to the PLL frequency
-	* 1 - equal to the PLL frequency divided by 2
-	* 2 - equal to the PLL frequency divided by 4
-
-Recommended properties:
-- clocks: Should be the phandle of input parent clock
-- clock-names: From common clock binding, indicates the clock name
-- clock-output-names: From common clock binding, indicates the names of
-	output clocks
-- reg: Should be the offset and length of clock block base address.
-	The length should be 4.
-
-Legacy Example:
-/ {
-	clockgen: global-utilities@e1000 {
-		compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0";
-		ranges = <0x0 0xe1000 0x1000>;
-		clock-frequency = <133333333>;
-		reg = <0xe1000 0x1000>;
-		#address-cells = <1>;
-		#size-cells = <1>;
-
-		sysclk: sysclk {
-			#clock-cells = <0>;
-			compatible = "fsl,qoriq-sysclk-1.0";
-			clock-output-names = "sysclk";
-		};
-
-		pll0: pll0@800 {
-			#clock-cells = <1>;
-			reg = <0x800 0x4>;
-			compatible = "fsl,qoriq-core-pll-1.0";
-			clocks = <&sysclk>;
-			clock-output-names = "pll0", "pll0-div2";
-		};
-
-		pll1: pll1@820 {
-			#clock-cells = <1>;
-			reg = <0x820 0x4>;
-			compatible = "fsl,qoriq-core-pll-1.0";
-			clocks = <&sysclk>;
-			clock-output-names = "pll1", "pll1-div2";
-		};
-
-		mux0: mux0@0 {
-			#clock-cells = <0>;
-			reg = <0x0 0x4>;
-			compatible = "fsl,qoriq-core-mux-1.0";
-			clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
-			clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
-			clock-output-names = "cmux0";
-		};
-
-		mux1: mux1@20 {
-			#clock-cells = <0>;
-			reg = <0x20 0x4>;
-			compatible = "fsl,qoriq-core-mux-1.0";
-			clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>;
-			clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2";
-			clock-output-names = "cmux1";
-		};
-
-		platform-pll: platform-pll@c00 {
-			#clock-cells = <1>;
-			reg = <0xc00 0x4>;
-			compatible = "fsl,qoriq-platform-pll-1.0";
-			clocks = <&sysclk>;
-			clock-output-names = "platform-pll", "platform-pll-div2";
-		};
-	};
-};
-
-Example for legacy clock consumer:
-
-/ {
-	cpu0: PowerPC,e5500@0 {
-		...
-		clocks = <&mux0>;
-		...
-	};
-};