dt-bindings: thermal: Add bindings for thermal devices

Add bindings for thermal devices on Sun Soc, converted to YAML
format.

Change-Id: Ie5c39b55055c8f4e2a581128afdc45399cfb0c31
Signed-off-by: Rashid Zafar <quic_rzafar@quicinc.com>

bindings/thermal/qti-cpu-hotplug-cdev.yaml

@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/qti-cpu-hotplug-cdev.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. CPU Hotplug Cooling Device
+
+maintainers:
+  - Rashid Zafar <quic_rzafar@quicinc.com>
+
+description: |
+  The CPU hotplug cooling device will be used for hotplugging a CPU on a thermal
+  condition. This cooling device driver can register one cooling device per CPU,
+  which can be used by thermal zone to mitigate.
+
+  Each child node will represent a cooling device and the child node should
+  point to the CPU, which will be mitigated by that cooling device instance.
+
+properties:
+  compatible:
+    const: qcom,cpu-hotplug
+
+patternProperties:
+  "^cpu([0-9]*)-hotplug$":
+    type: object
+    description: |
+      This child nodes describes the CPU which will be hotplugged when the cooling
+      device is mitigated.
+
+    properties:
+      qcom,cpu:
+        $ref: /schemas/types.yaml#/definitions/phandle
+        description: |
+          Phandle to the CPU device that this cooling device will
+          mitigate.
+
+      "#cooling-cells":
+        const: 2
+        description: |
+          Must be 2. Needed for of_thermal as cooling device identifier.
+          Please refer to <devicetree/bindings/thermal/thermal.txt> for
+          more details.
+
+    required:
+      - qcom,cpu
+      - "#cooling-cells"
+
+    additionalProperties: false
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    qcom,cpu-hotplug {
+      compatible = "qcom,cpu-hotplug";
+
+        cpu0_hotplug: cpu0-hotplug {
+            qcom,cpu = <&CPU0>;
+            #cooling-cells = <2>;
+        };
+        cpu1_hotplug: cpu1-hotplug {
+            qcom,cpu = <&CPU1>;
+            #cooling-cells = <2>;
+        };
+        cpu2_hotplug: cpu2-hotplug {
+            qcom,cpu = <&CPU2>;
+            #cooling-cells = <2>;
+        };
+        cpu3_hotplug: cpu3-hotplug {
+            qcom,cpu = <&CPU3>;
+            #cooling-cells = <2>;
+        };
+    };