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-Linear Technology LTC3676 8-output regulators
-
-Required properties:
-- compatible: "lltc,ltc3676"
-- reg: I2C slave address
-
-Required child node:
-- regulators: Contains eight regulator child nodes sw1, sw2, sw3, sw4,
- ldo1, ldo2, ldo3, and ldo4, specifying the initialization data as
- documented in Documentation/devicetree/bindings/regulator/regulator.txt.
-
-Each regulator is defined using the standard binding for regulators. The
-nodes for sw1, sw2, sw3, sw4, ldo1, ldo2 and ldo4 additionally need to specify
-the resistor values of their external feedback voltage dividers:
-
-Required properties (not on ldo3):
-- lltc,fb-voltage-divider: An array of two integers containing the resistor
- values R1 and R2 of the feedback voltage divider in ohms.
-
-Regulators sw1, sw2, sw3, sw4 can regulate the feedback reference from:
-412.5mV to 800mV in 12.5 mV steps. The output voltage thus ranges between
-0.4125 * (1 + R1/R2) V and 0.8 * (1 + R1/R2) V.
-
-Regulators ldo1, ldo2, and ldo4 have a fixed 0.725 V reference and thus output
-0.725 * (1 + R1/R2) V. The ldo3 regulator is fixed to 1.8 V. The ldo1 standby
-regulator can not be disabled and thus should have the regulator-always-on
-property set.
-
-Example:
-
- ltc3676: pmic@3c {
- compatible = "lltc,ltc3676";
- reg = <0x3c>;
-
- regulators {
- sw1_reg: sw1 {
- regulator-min-microvolt = <674400>;
- regulator-max-microvolt = <1308000>;
- lltc,fb-voltage-divider = <127000 200000>;
- regulator-ramp-delay = <7000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- sw2_reg: sw2 {
- regulator-min-microvolt = <1033310>;
- regulator-max-microvolt = <200400>;
- lltc,fb-voltage-divider = <301000 200000>;
- regulator-ramp-delay = <7000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- sw3_reg: sw3 {
- regulator-min-microvolt = <674400>;
- regulator-max-microvolt = <130800>;
- lltc,fb-voltage-divider = <127000 200000>;
- regulator-ramp-delay = <7000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- sw4_reg: sw4 {
- regulator-min-microvolt = <868310>;
- regulator-max-microvolt = <168400>;
- lltc,fb-voltage-divider = <221000 200000>;
- regulator-ramp-delay = <7000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- ldo2_reg: ldo2 {
- regulator-min-microvolt = <2490375>;
- regulator-max-microvolt = <2490375>;
- lltc,fb-voltage-divider = <487000 200000>;
- regulator-boot-on;
- regulator-always-on;
- };
-
- ldo3_reg: ldo3 {
- regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <1800000>;
- regulator-boot-on;
- };
-
- ldo4_reg: ldo4 {
- regulator-min-microvolt = <3023250>;
- regulator-max-microvolt = <3023250>;
- lltc,fb-voltage-divider = <634000 200000>;
- regulator-boot-on;
- regulator-always-on;
- };
- };
- };