soc: qcom: documentation: Update SMD/RPM Docs

This patch moves the qcom,smd-rpm.txt to the correct location and splits
out the smd and rpm documentation.  In addition, a smd-rpm-regulator
document is added.
Signed-off-by: Andy Gross <agross@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/soc/qcom,smd-rpm.txt → Documentation/devicetree/bindings/regulator/qcom,smd-rpm-regulator.txt

-Qualcomm Resource Power Manager (RPM) over SMD
+QCOM SMD RPM REGULATOR
 
-This driver is used to interface with the Resource Power Manager (RPM) found in
-various Qualcomm platforms. The RPM allows each component in the system to vote
-for state of the system resources, such as clocks, regulators and bus
-frequencies.
+The Qualcomm RPM over SMD regulator is modelled as a subdevice of the RPM.
+Because SMD is used as the communication transport mechanism, the RPM resides as
+a subnode of the SMD.  As such, the SMD-RPM regulator requires that the SMD and
+RPM nodes be present.
 
-- compatible:
-	Usage: required
-	Value type: <string>
-	Definition: must be one of:
-		    "qcom,rpm-msm8974"
+Please refer to Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt for
+information pertaining to the SMD node.
 
-- qcom,smd-channels:
-	Usage: required
-	Value type: <stringlist>
-	Definition: Shared Memory channel used for communication with the RPM
-
-= SUBDEVICES
+Please refer to Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.txt for
+information regarding the RPM node.
 
-The RPM exposes resources to its subnodes. The below bindings specify the set
-of valid subnodes that can operate on these resources.
-
-== Regulators
+== Regulator
 
 Regulator nodes are identified by their compatible:
 
@@ -114,4 +104,3 @@ see regulator.txt.
 			};
 		};
 	};
-

Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.txt

+Qualcomm Resource Power Manager (RPM) over SMD
+
+This driver is used to interface with the Resource Power Manager (RPM) found in
+various Qualcomm platforms. The RPM allows each component in the system to vote
+for state of the system resources, such as clocks, regulators and bus
+frequencies.
+
+The SMD information for the RPM edge should be filled out.  See qcom,smd.txt for
+the required edge properties.  All SMD related properties will reside within the
+RPM node itself.
+
+= SUBDEVICES
+
+The RPM exposes resources to its subnodes.  The rpm_requests node must be
+present and this subnode may contain children that designate regulator
+resources.
+
+- compatible:
+	Usage: required
+	Value type: <string>
+	Definition: must be one of:
+		    "qcom,rpm-apq8084"
+		    "qcom,rpm-msm8916"
+		    "qcom,rpm-msm8974"
+
+- qcom,smd-channels:
+	Usage: required
+	Value type: <string>
+	Definition: must be "rpm_requests"
+
+Refer to Documentation/devicetree/bindings/regulator/qcom,smd-rpm-regulator.txt
+for information on the regulator subnodes that can exist under the rpm_requests.
+
+Example:
+
+	soc {
+		apcs: syscon@f9011000 {
+			compatible = "syscon";
+			reg = <0xf9011000 0x1000>;
+		};
+	};
+
+	smd {
+		compatible = "qcom,smd";
+
+		rpm {
+			interrupts = <0 168 1>;
+			qcom,ipc = <&apcs 8 0>;
+			qcom,smd-edge = <15>;
+
+			rpm_requests {
+				compatible = "qcom,rpm-msm8974";
+				qcom,smd-channels = "rpm_requests";
+
+				...
+			};
+		};
+	};