Regulator of AMS AS3722 PMIC.
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Name of the regulator subnode must be "regulators".
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Optional properties:
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--------------------
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The input supply of regulators are the optional properties on the
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regulator node. The AS3722 is having 7 DCDC step-down regulators as
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sd[0-6], 10 LDOs as ldo[0-7], ldo[9-11]. The input supply of these
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regulators are provided through following properties:
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vsup-sd2-supply: Input supply for SD2.
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vsup-sd3-supply: Input supply for SD3.
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vsup-sd4-supply: Input supply for SD4.
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vsup-sd5-supply: Input supply for SD5.
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vin-ldo0-supply: Input supply for LDO0.
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vin-ldo1-6-supply: Input supply for LDO1 and LDO6.
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vin-ldo2-5-7-supply: Input supply for LDO2, LDO5 and LDO7.
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vin-ldo3-4-supply: Input supply for LDO3 and LDO4.
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vin-ldo9-10-supply: Input supply for LDO9 and LDO10.
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vin-ldo11-supply: Input supply for LDO11.
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Optional nodes:
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--------------
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- regulators : Must contain a sub-node per regulator from the list below.
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Each sub-node should contain the constraints and initialization
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information for that regulator. See regulator.txt for a
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description of standard properties for these sub-nodes.
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Additional custom properties are listed below.
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sd[0-6], ldo[0-7], ldo[9-11].
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Optional sub-node properties:
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----------------------------
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ams,ext-control: External control of the rail. The option of
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this properties will tell which external input is
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controlling this rail. Valid values are 0, 1, 2 ad 3.
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0: There is no external control of this rail.
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1: Rail is controlled by ENABLE1 input pin.
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2: Rail is controlled by ENABLE2 input pin.
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3: Rail is controlled by ENABLE3 input pin.
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ams,enable-tracking: Enable tracking with SD1, only supported
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by LDO3.
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Example:
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-------
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ams3722: ams3722 {
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compatible = "ams,as3722";
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reg = <0x40>;
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...
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regulators {
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vsup-sd2-supply = <...>;
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...
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sd0 {
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regulator-name = "vdd_cpu";
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regulator-min-microvolt = <700000>;
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regulator-max-microvolt = <1400000>;
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regulator-always-on;
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ams,ext-control = <2>;
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};
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sd1 {
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regulator-name = "vdd_core";
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regulator-min-microvolt = <700000>;
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regulator-max-microvolt = <1400000>;
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regulator-always-on;
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ams,ext-control = <1>;
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};
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sd2 {
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regulator-name = "vddio_ddr";
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regulator-min-microvolt = <1350000>;
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regulator-max-microvolt = <1350000>;
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regulator-always-on;
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};
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sd4 {
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regulator-name = "avdd-hdmi-pex";
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regulator-min-microvolt = <1050000>;
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regulator-max-microvolt = <1050000>;
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regulator-always-on;
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};
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sd5 {
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regulator-name = "vdd-1v8";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-always-on;
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};
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....
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};
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};
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