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Unverified Commit dbd1709f authored by pascal paillet's avatar pascal paillet Committed by Mark Brown
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dt-bindings: regulator: document stpmic1 pmic regulators 



The STPMIC1 regulators supply power to the application processor as well as
to the external system peripherals such as DDR, Flash memories and system
devices.

Signed-off-by: default avatarpascal paillet <p.paillet@st.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4b03227a

Documentation/devicetree/bindings/regulator/st,stpmic1-regulator.txt

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STMicroelectronics STPMIC1 Voltage regulators



Regulator Nodes are optional depending on needs.



Available Regulators in STPMIC1 device are:

  - buck1 for Buck BUCK1

  - buck2 for Buck BUCK2

  - buck3 for Buck BUCK3

  - buck4 for Buck BUCK4

  - ldo1 for LDO LDO1

  - ldo2 for LDO LDO2

  - ldo3 for LDO LDO3

  - ldo4 for LDO LDO4

  - ldo5 for LDO LDO5

  - ldo6 for LDO LDO6

  - vref_ddr for LDO Vref DDR

  - boost for Buck BOOST

  - pwr_sw1 for VBUS_OTG switch

  - pwr_sw2 for SW_OUT switch



Switches are fixed voltage regulators with only enable/disable capability.



Optional properties:

- st,mask-reset: mask reset for this regulator: the regulator configuration

  is maintained during pmic reset.

- regulator-pull-down: enable high pull down

  if not specified light pull down is used

- regulator-over-current-protection:

    if set, all regulators are switched off in case of over-current detection

    on this regulator,

    if not set, the driver only sends an over-current event.

- interrupt-parent: phandle to the parent interrupt controller

- interrupts: index of current limit detection interrupt

- <regulator>-supply: phandle to the parent supply/regulator node

	each regulator supply can be described except vref_ddr.



Example:

regulators {

	compatible = "st,stpmic1-regulators";



	ldo6-supply = <&v3v3>;



	vdd_core: buck1 {

		regulator-name = "vdd_core";

		interrupts = <IT_CURLIM_BUCK1 0>;

		interrupt-parent = <&pmic>;

		st,mask-reset;

		regulator-pull-down;

		regulator-min-microvolt = <700000>;

		regulator-max-microvolt = <1200000>;

	};



	v3v3: buck4 {

		regulator-name = "v3v3";

		interrupts = <IT_CURLIM_BUCK4 0>;

		interrupt-parent = <&mypmic>;



		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

	};



	v1v8: ldo6 {

		regulator-name = "v1v8";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <1800000>;

		regulator-over-current-protection;

	};

};