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Unverified Commit 5149b685 authored by Erick Chen's avatar Erick Chen Committed by Mark Brown
Browse files

regulator: Add Spreadtrum SC2731 regulator documentation 



This patch adds support for the Spreadtrum SC2731
voltage regulator device.

Signed-off-by: default avatarErick Chen <erick.chen@spreadtrum.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4fbd8d19

Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt

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Spreadtrum SC2731 Voltage regulators



The SC2731 integrates low-voltage and low quiescent current DCDC/LDO.

14 LDO and 3 DCDCs are designed for external use. All DCDCs/LDOs have

their own bypass (power-down) control signals. External tantalum or MLCC

ceramic capacitors are recommended to use with these LDOs.



Required properties:

 - compatible: should be "sprd,sc27xx-regulator".



List of regulators provided by this controller. It is named according to

its regulator type, BUCK_<name> and LDO_<name>. The definition for each

of these nodes is defined using the standard binding for regulators at

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



The valid names for regulators are:

BUCK:

	BUCK_CPU0, BUCK_CPU1, BUCK_RF

LDO:

	LDO_CAMA0, LDO_CAMA1, LDO_CAMMOT, LDO_VLDO, LDO_EMMCCORE, LDO_SDCORE,

	LDO_SDIO, LDO_WIFIPA, LDO_USB33, LDO_CAMD0, LDO_CAMD1, LDO_CON,

	LDO_CAMIO, LDO_SRAM



Example:

	regulators {

		compatible = "sprd,sc27xx-regulator";



		vddarm0: BUCK_CPU0 {

			regulator-name = "vddarm0";

			regulator-min-microvolt = <400000>;

			regulator-max-microvolt = <1996875>;

			regulator-ramp-delay = <25000>;

			regulator-always-on;

		};



		vddcama0: LDO_CAMA0 {

			regulator-name = "vddcama0";

			regulator-min-microvolt = <1200000>;

			regulator-max-microvolt = <3750000>;

			regulator-enable-ramp-delay = <100>;

		};

		...

	};