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Unverified Commit 196c8135 authored by Matti Vaittinen's avatar Matti Vaittinen Committed by Mark Brown
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regulator: bd71837: Devicetree bindings for BD71837 regulators 



Document devicetree bindings for ROHM BD71837 PMIC regulators.

Signed-off-by: default avatarMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 37bed97f

Documentation/devicetree/bindings/regulator/rohm,bd71837-regulator.txt

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ROHM BD71837 Power Management Integrated Circuit (PMIC) regulator bindings



BD71837MWV is a programmable Power Management

IC (PMIC) for powering single-core, dual-core, and

quad-core SoC’s such as NXP-i.MX 8M. It is optimized

for low BOM cost and compact solution footprint. It

integrates 8 Buck regulators and 7 LDO’s to provide all

the power rails required by the SoC and the commonly

used peripherals.



Required properties:

 - regulator-name: should be "buck1", ..., "buck8" and "ldo1", ..., "ldo7"



List of regulators provided by this controller. BD71837 regulators node

should be sub node of the BD71837 MFD node. See BD71837 MFD bindings at

Documentation/devicetree/bindings/mfd/rohm,bd71837-pmic.txt

Regulator nodes should be named to BUCK_<number> and LDO_<number>. The

definition for each of these nodes is defined using the standard

binding for regulators at

Documentation/devicetree/bindings/regulator/regulator.txt.

Note that if BD71837 starts at RUN state you probably want to use

regulator-boot-on at least for BUCK6 and BUCK7 so that those are not

disabled by driver at startup. LDO5 and LDO6 are supplied by those and

if they are disabled at startup the voltage monitoring for LDO5/LDO6 will

cause PMIC to reset.



The valid names for regulator nodes are:

BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, BUCK7, BUCK8

LDO1, LDO2, LDO3, LDO4, LDO5, LDO6, LDO7



Optional properties:

- Any optional property defined in bindings/regulator/regulator.txt



Example:

regulators {

	buck1: BUCK1 {

		regulator-name = "buck1";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1300000>;

		regulator-boot-on;

		regulator-ramp-delay = <1250>;

	};

	buck2: BUCK2 {

		regulator-name = "buck2";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1300000>;

		regulator-boot-on;

		regulator-always-on;

		regulator-ramp-delay = <1250>;

	};

	buck3: BUCK3 {

		regulator-name = "buck3";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1300000>;

		regulator-boot-on;

	};

	buck4: BUCK4 {

		regulator-name = "buck4";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1300000>;

		regulator-boot-on;

	};

	buck5: BUCK5 {

		regulator-name = "buck5";

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1350000>;

		regulator-boot-on;

	};

	buck6: BUCK6 {

		regulator-name = "buck6";

		regulator-min-microvolt = <3000000>;

		regulator-max-microvolt = <3300000>;

		regulator-boot-on;

	};

	buck7: BUCK7 {

		regulator-name = "buck7";

		regulator-min-microvolt = <1605000>;

		regulator-max-microvolt = <1995000>;

		regulator-boot-on;

	};

	buck8: BUCK8 {

		regulator-name = "buck8";

		regulator-min-microvolt = <800000>;

		regulator-max-microvolt = <1400000>;

	};



	ldo1: LDO1 {

		regulator-name = "ldo1";

		regulator-min-microvolt = <3000000>;

		regulator-max-microvolt = <3300000>;

		regulator-boot-on;

	};

	ldo2: LDO2 {

		regulator-name = "ldo2";

		regulator-min-microvolt = <900000>;

		regulator-max-microvolt = <900000>;

		regulator-boot-on;

	};

	ldo3: LDO3 {

		regulator-name = "ldo3";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <3300000>;

	};

	ldo4: LDO4 {

		regulator-name = "ldo4";

		regulator-min-microvolt = <900000>;

		regulator-max-microvolt = <1800000>;

	};

	ldo5: LDO5 {

		regulator-name = "ldo5";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <3300000>;

	};

	ldo6: LDO6 {

		regulator-name = "ldo6";

		regulator-min-microvolt = <900000>;

		regulator-max-microvolt = <1800000>;

	};

	ldo7_reg: LDO7 {

		regulator-name = "ldo7";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <3300000>;

	};

};