dt-bindings: mips: add CPU bindings for MIPS architecture

Add the yaml binding for available CPUs in MIPS architecture.
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSergio Paracuellos <sergio.paracuellos@gmail.com>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@fungible.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Documentation/devicetree/bindings/mips/brcm/brcm,bmips.txt

-* Broadcom MIPS (BMIPS) CPUs
-
-Required properties:
-- compatible: "brcm,bmips3300", "brcm,bmips4350", "brcm,bmips4380",
-  "brcm,bmips5000"
-
-- mips-hpt-frequency: This is common to all CPUs in the system so it lives
-  under the "cpus" node.

Documentation/devicetree/bindings/mips/cpus.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mips/cpus.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MIPS CPUs bindings
+
+maintainers:
+  - Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+  - 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
+
+description: |
+  The device tree allows to describe the layout of CPUs in a system through
+  the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
+  defining properties for every CPU.
+
+properties:
+  compatible:
+    enum:
+      - brcm,bmips3300
+      - brcm,bmips4350
+      - brcm,bmips4380
+      - brcm,bmips5000
+      - brcm,bmips5200
+      - ingenic,xburst-mxu1.0
+      - ingenic,xburst-fpu1.0-mxu1.1
+      - ingenic,xburst-fpu2.0-mxu2.0
+      - ingenic,xburst2-fpu2.1-mxu2.1-smt
+      - loongson,gs264
+      - mips,m14Kc
+      - mips,mips4Kc
+      - mips,mips4KEc
+      - mips,mips24Kc
+      - mips,mips24KEc
+      - mips,mips74Kc
+      - mips,mips1004Kc
+      - mti,interaptiv
+      - mti,mips24KEc
+      - mti,mips14KEc
+      - mti,mips14Kc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  device_type: true
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - ingenic,xburst-mxu1.0
+              - ingenic,xburst-fpu1.0-mxu1.1
+              - ingenic,xburst-fpu2.0-mxu2.0
+              - ingenic,xburst2-fpu2.1-mxu2.1-smt
+    then:
+      required:
+        - device_type
+        - clocks
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    cpus {
+      #size-cells = <0>;
+      #address-cells = <1>;
+
+      cpu@0 {
+        compatible = "mips,mips1004Kc";
+        device_type = "cpu";
+        reg = <0>;
+      };
+
+      cpu@1 {
+        compatible = "mips,mips1004Kc";
+        device_type = "cpu";
+        reg = <1>;
+      };
+    };
+
+  - |
+    // Example 2 (Ingenic CPU)
+    #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
+
+    cpus {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      cpu@0 {
+        compatible = "ingenic,xburst-fpu1.0-mxu1.1";
+        device_type = "cpu";
+        reg = <0>;
+
+        clocks = <&cgu JZ4780_CLK_CPU>;
+      };
+
+      cpu@1 {
+        compatible = "ingenic,xburst-fpu1.0-mxu1.1";
+        device_type = "cpu";
+        reg = <1>;
+
+        clocks = <&cgu JZ4780_CLK_CORE1>;
+      };
+    };
+...

Documentation/devicetree/bindings/mips/ingenic/ingenic,cpu.yaml

-# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/mips/ingenic/ingenic,cpu.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Bindings for Ingenic XBurst family CPUs
-
-maintainers:
-  - 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
-
-description:
-  Ingenic XBurst family CPUs shall have the following properties.
-
-properties:
-  compatible:
-    oneOf:
-
-      - description: Ingenic XBurst®1 CPU Cores
-        enum:
-          - ingenic,xburst-mxu1.0
-          - ingenic,xburst-fpu1.0-mxu1.1
-          - ingenic,xburst-fpu2.0-mxu2.0
-
-      - description: Ingenic XBurst®2 CPU Cores
-        enum:
-          - ingenic,xburst2-fpu2.1-mxu2.1-smt
-
-  reg:
-    maxItems: 1
-
-  clocks:
-    maxItems: 1
-
-  device_type: true
-
-required:
-  - device_type
-  - compatible
-  - reg
-  - clocks
-
-additionalProperties: false
-
-examples:
-  - |
-    #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
-
-    cpus {
-        #address-cells = <1>;
-        #size-cells = <0>;
-
-        cpu0: cpu@0 {
-                device_type = "cpu";
-                compatible = "ingenic,xburst-fpu1.0-mxu1.1";
-                reg = <0>;
-
-                clocks = <&cgu JZ4780_CLK_CPU>;
-        };
-
-        cpu1: cpu@1 {
-                device_type = "cpu";
-                compatible = "ingenic,xburst-fpu1.0-mxu1.1";
-                reg = <1>;
-
-                clocks = <&cgu JZ4780_CLK_CORE1>;
-        };
-    };
-...