dt-bindings: clock: Add YAML schemas for the QCOM RPMHCC clock bindings

The RPMHCC clock provider have a bunch of generic properties that
are needed in a device tree. Add a YAML schemas for those.

Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lkml.kernel.org/r/1572371299-16774-2-git-send-email-tdas@codeaurora.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Documentation/devicetree/bindings/clock/qcom,rpmh-clk.txt

@@ -1,27 +0,0 @@
-Qualcomm Technologies, Inc. RPMh Clocks
--------------------------------------------------------
-
-Resource Power Manager Hardened (RPMh) manages shared resources on
-some Qualcomm Technologies Inc. SoCs. It accepts clock requests from
-other hardware subsystems via RSC to control clocks.
-
-Required properties :
-- compatible : must be one of:
-	       "qcom,sdm845-rpmh-clk"
-	       "qcom,sm8150-rpmh-clk"
-
-- #clock-cells : must contain 1
-- clocks: a list of phandles and clock-specifier pairs,
-	  one for each entry in clock-names.
-- clock-names: Parent board clock: "xo".
-
-Example :
-
-#include <dt-bindings/clock/qcom,rpmh.h>
-
-	&apps_rsc {
-		rpmhcc: clock-controller {
-			compatible = "qcom,sdm845-rpmh-clk";
-			#clock-cells = <1>;
-		};
-	};

Documentation/devicetree/bindings/clock/qcom,rpmhcc.yaml

@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/bindings/clock/qcom,rpmhcc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. RPMh Clocks Bindings
+
+maintainers:
+  - Taniya Das <tdas@codeaurora.org>
+
+description: |
+  Resource Power Manager Hardened (RPMh) manages shared resources on
+  some Qualcomm Technologies Inc. SoCs. It accepts clock requests from
+  other hardware subsystems via RSC to control clocks.
+
+properties:
+  compatible:
+    enum:
+      - qcom,sdm845-rpmh-clk
+      - qcom,sm8150-rpmh-clk
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: xo
+
+  '#clock-cells':
+    const: 1
+
+required:
+  - compatible
+  - '#clock-cells'
+
+examples:
+  # Example for GCC for SDM845: The below node should be defined inside
+  # &apps_rsc node.
+  - |
+    #include <dt-bindings/clock/qcom,rpmh.h>
+    rpmhcc: clock-controller {
+      compatible = "qcom,sdm845-rpmh-clk";
+      clocks = <&xo_board>;
+      clock-names = "xo";
+      #clock-cells = <1>;
+    };
+...