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regulator: dt-bindings: maxim,max77802: Convert to dtschema
Convert the regulators of Maxim MAX77802 PMIC to DT schema format. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20220215075344.31421-2-krzysztof.kozlowski@canonical.com
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Krzysztof Kozlowski
Lee Jones
parent
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Binding for Maxim MAX77802 regulators
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This is a part of device tree bindings of MAX77802 multi-function device.
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More information can be found in bindings/mfd/max77802.txt file.
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The MAX77802 PMIC has 10 high-efficiency Buck and 32 Low-dropout (LDO)
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regulators that can be controlled over I2C.
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Following properties should be present in main device node of the MFD chip.
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Optional properties:
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- inb1-supply: The input supply for BUCK1
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- inb2-supply: The input supply for BUCK2
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- inb3-supply: The input supply for BUCK3
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- inb4-supply: The input supply for BUCK4
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- inb5-supply: The input supply for BUCK5
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- inb6-supply: The input supply for BUCK6
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- inb7-supply: The input supply for BUCK7
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- inb8-supply: The input supply for BUCK8
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- inb9-supply: The input supply for BUCK9
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- inb10-supply: The input supply for BUCK10
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- inl1-supply: The input supply for LDO8 and LDO15
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- inl2-supply: The input supply for LDO17, LDO27, LDO30 and LDO35
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- inl3-supply: The input supply for LDO3, LDO5, LDO6 and LDO7
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- inl4-supply: The input supply for LDO10, LDO11, LDO13 and LDO14
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- inl5-supply: The input supply for LDO9 and LDO19
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- inl6-supply: The input supply for LDO4, LDO21, LDO24 and LDO33
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- inl7-supply: The input supply for LDO18, LDO20, LDO28 and LDO29
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- inl9-supply: The input supply for LDO12, LDO23, LDO25, LDO26, LDO32 and LDO34
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- inl10-supply: The input supply for LDO1 and LDO2
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Optional nodes:
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- regulators : The regulators of max77802 have to be instantiated
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under subnode named "regulators" using the following format.
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regulator-name {
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standard regulator constraints....
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};
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refer Documentation/devicetree/bindings/regulator/regulator.txt
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The regulator node name should be initialized with a string to get matched
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with their hardware counterparts as follow. The valid names are:
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-LDOn : for LDOs, where n can lie in ranges 1-15, 17-21, 23-30
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and 32-35.
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example: LDO1, LDO2, LDO35.
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-BUCKn : for BUCKs, where n can lie in range 1 to 10.
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example: BUCK1, BUCK5, BUCK10.
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The max77802 regulator supports two different operating modes: Normal and Low
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Power Mode. Some regulators support the modes to be changed at startup or by
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the consumers during normal operation while others only support to change the
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mode during system suspend. The standard regulator suspend states binding can
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be used to configure the regulator operating mode.
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The regulators that support the standard "regulator-initial-mode" property,
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changing their mode during normal operation are: LDOs 1, 3, 20 and 21.
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The possible values for "regulator-initial-mode" and "regulator-mode" are:
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1: Normal regulator voltage output mode.
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3: Low Power which reduces the quiescent current down to only 1uA
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The valid modes list is defined in the dt-bindings/regulator/maxim,max77802.h
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header and can be included by device tree source files.
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The standard "regulator-mode" property can only be used for regulators that
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support changing their mode to Low Power Mode during suspend. These regulators
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are: BUCKs 2-4 and LDOs 1-35. Also, it only takes effect if the regulator has
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been enabled for the given suspend state using "regulator-on-in-suspend" and
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has not been disabled for that state using "regulator-off-in-suspend".
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Example:
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max77802@9 {
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compatible = "maxim,max77802";
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interrupt-parent = <&wakeup_eint>;
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interrupts = <26 0>;
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reg = <0x09>;
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#address-cells = <1>;
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#size-cells = <0>;
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inb1-supply = <&parent_reg>;
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regulators {
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ldo1_reg: LDO1 {
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regulator-name = "vdd_1v0";
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regulator-min-microvolt = <1000000>;
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regulator-max-microvolt = <1000000>;
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regulator-always-on;
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regulator-initial-mode = <MAX77802_OPMODE_LP>;
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};
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ldo11_reg: LDO11 {
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regulator-name = "vdd_ldo11";
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regulator-min-microvolt = <1900000>;
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regulator-max-microvolt = <1900000>;
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regulator-always-on;
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regulator-state-mem {
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regulator-on-in-suspend;
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regulator-mode = <MAX77802_OPMODE_LP>;
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};
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};
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buck1_reg: BUCK1 {
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regulator-name = "vdd_mif";
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regulator-min-microvolt = <950000>;
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regulator-max-microvolt = <1300000>;
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regulator-always-on;
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regulator-boot-on;
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};
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};
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@ -0,0 +1,85 @@
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/regulator/maxim,max77802.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Maxim MAX77802 Power Management IC regulators
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maintainers:
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- Javier Martinez Canillas <javier@dowhile0.org>
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- Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
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description: |
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This is a part of device tree bindings for Maxim MAX77802 Power Management
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Integrated Circuit (PMIC).
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The Maxim MAX77686 provides 10 high-efficiency Buck and 32 Low-DropOut (LDO)
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regulators.
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See also Documentation/devicetree/bindings/mfd/maxim,max77802.yaml for
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additional information and example.
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Certain regulators support "regulator-initial-mode" and "regulator-mode".
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The valid modes list is defined in the dt-bindings/regulator/maxim,max77802.h
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and their meaning is::
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1 - Normal regulator voltage output mode.
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3 - Low Power which reduces the quiescent current down to only 1uA
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The standard "regulator-mode" property can only be used for regulators that
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support changing their mode to Low Power Mode during suspend. These
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regulators are:: bucks 2-4 and LDOs 1-35. Also, it only takes effect if the
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regulator has been enabled for the given suspend state using
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"regulator-on-in-suspend" and has not been disabled for that state using
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"regulator-off-in-suspend".
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patternProperties:
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# LDO1, LDO3, LDO20, LDO21
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"^LDO([13]|2[01])$":
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type: object
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$ref: regulator.yaml#
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unevaluatedProperties: false
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description:
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LDOs supporting the regulator-initial-mode property and changing their
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mode during normal operation.
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# LDO2, LDO4-15, LDO17-19, LDO23-30, LDO32-35
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"^LDO([24-9]|1[0-5789]|2[3-9]|3[02345])$":
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type: object
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$ref: regulator.yaml#
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unevaluatedProperties: false
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description:
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LDOs supporting the regulator-mode property (changing mode to Low Power
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Mode during suspend).
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properties:
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regulator-initial-mode: false
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# buck2-4
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"^BUCK[2-4]$":
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type: object
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$ref: regulator.yaml#
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unevaluatedProperties: false
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description:
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bucks supporting the regulator-mode property (changing mode to Low Power
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Mode during suspend).
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properties:
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regulator-initial-mode: false
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# buck1, buck5-10
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"^BUCK([15-9]|10)$":
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type: object
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$ref: regulator.yaml#
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unevaluatedProperties: false
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properties:
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regulator-initial-mode: false
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patternProperties:
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regulator-state-(standby|mem|disk):
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type: object
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properties:
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regulator-mode: false
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additionalProperties: false
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