QCOM SMD RPM REGULATOR

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.

Please refer to Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt for
information pertaining to the SMD node.

Please refer to Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.txt for
information regarding the RPM node.

== Regulator

Regulator nodes are identified by their compatible:

- compatible:
	Usage: required
	Value type: <string>
	Definition: must be one of:
		    "qcom,rpm-pm8841-regulators"
		    "qcom,rpm-pm8941-regulators"

- vdd_s1-supply:
- vdd_s2-supply:
- vdd_s3-supply:
- vdd_s4-supply:
- vdd_s5-supply:
- vdd_s6-supply:
- vdd_s7-supply:
- vdd_s8-supply:
	Usage: optional (pm8841 only)
	Value type: <phandle>
	Definition: reference to regulator supplying the input pin, as
		    described in the data sheet

- vdd_s1-supply:
- vdd_s2-supply:
- vdd_s3-supply:
- vdd_l1_l3-supply:
- vdd_l2_lvs1_2_3-supply:
- vdd_l4_l11-supply:
- vdd_l5_l7-supply:
- vdd_l6_l12_l14_l15-supply:
- vdd_l8_l16_l18_l19-supply:
- vdd_l9_l10_l17_l22-supply:
- vdd_l13_l20_l23_l24-supply:
- vdd_l21-supply:
- vin_5vs-supply:
	Usage: optional (pm8941 only)
	Value type: <phandle>
	Definition: reference to regulator supplying the input pin, as
		    described in the data sheet

The regulator node houses sub-nodes for each regulator within the device. Each
sub-node is identified using the node's name, with valid values listed for each
of the pmics below.

pm8841:
	s1, s2, s3, s4, s5, s6, s7, s8

pm8941:
	s1, s2, s3, s4, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13,
	l14, l15, l16, l17, l18, l19, l20, l21, l22, l23, l24, lvs1, lvs2,
	lvs3, 5vs1, 5vs2

The content of each sub-node is defined by the standard binding for regulators -
see regulator.txt.

= EXAMPLE

	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";

				pm8941-regulators {
					compatible = "qcom,rpm-pm8941-regulators";
					vdd_l13_l20_l23_l24-supply = <&pm8941_boost>;

					pm8941_s3: s3 {
						regulator-min-microvolt = <1800000>;
						regulator-max-microvolt = <1800000>;
					};

					pm8941_boost: s4 {
						regulator-min-microvolt = <5000000>;
						regulator-max-microvolt = <5000000>;
					};

					pm8941_l20: l20 {
						regulator-min-microvolt = <2950000>;
						regulator-max-microvolt = <2950000>;
					};
				};
			};
		};
	};