dt-bindings: thermal: Add regulator cooling device driver bindings

Add bindings for regulator cooling device driver.


Change-Id: I5e196ba5d80a787de822223048283eb288b0f83f
Signed-off-by: Nitesh Kumar <quic_nitekuma@quicinc.com>

bindings/thermal/qti-regulator-cdev.yaml

@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/qti-regulator-cdev.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Regulator cooling device.
+
+maintainers:
+  - Nitesh Kumar <quic_nitekuma@quicinc.com>
+
+description: |
+ The regulator cooling device, will be used to place a voltage floor
+ restriction on a rail.
+
+
+properties:
+  compatible:
+    const: qcom,regulator-cooling-device
+
+  cdev-supply:
+    description: |
+      phandle to the regulator to which the cooling device will
+      place a floor mitigation.
+
+  regulator-levels:
+    description: |
+      Array of regulator voltages the cooling device should
+      use to place a floor restriction. The voltages should be specified
+      in descending order.
+
+  "#cooling-cells":
+    const: 2
+    description: |
+      Must be 2. Please refer to
+      <devicetree/bindings/thermal/thermal.txt> for more details.
+
+required:
+  - compatible
+  - cdev-supply
+  - regulator-levels
+  - "#cooling-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    mx_cdev: mx-cdev-lvl {
+      compatible = "qcom,regulator-cooling-device";
+      cdev-supply = <&regulator-cdev-supply>;
+      regulator-levels = <RPMH_REGULATOR_LEVEL_NOM RPMH_REGULATOR_LEVEL_OFF>;
+      #cooling-cells = <2>;
+    };