Add binding documentation for regulators on ROHM BD71815 PMIC. 5 bucks, 7 LDOs and a boost for LED.
Signed-off-by: Matti Vaittinen <matti.vaitti...@fi.rohmeurope.com> --- Changes since v1: - Changed patch order to fix ref dependecy - Added missing schema for nodes wled, ldodvref, ldolpsr .../regulator/rohm,bd71815-regulator.yaml | 116 ++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd71815-regulator.yaml diff --git a/Documentation/devicetree/bindings/regulator/rohm,bd71815-regulator.yaml b/Documentation/devicetree/bindings/regulator/rohm,bd71815-regulator.yaml new file mode 100644 index 000000000000..7d0adb74a396 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/rohm,bd71815-regulator.yaml @@ -0,0 +1,116 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/rohm,bd71815-regulator.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ROHM BD71815 Power Management Integrated Circuit regulators + +maintainers: + - Matti Vaittinen <matti.vaitti...@fi.rohmeurope.com> + +description: | + This module is part of the ROHM BD718215 MFD device. For more details + see Documentation/devicetree/bindings/mfd/rohm,bd71815-pmic.yaml. + + The regulator controller is represented as a sub-node of the PMIC node + on the device tree. + + The valid names for BD71815 regulator nodes are + buck1, buck2, buck3, buck4, buck5, + ldo1, ldo2, ldo3, ldo4, ldo5, + ldodvref, ldolpsr, wled + +properties: + wled: + type: object + description: + properties for wled regulator + $ref: regulator.yaml# + + properties: + regulator-name: + const: wled + +patternProperties: + "^((ldo|buck)[1-5]|ldolpsr|ldodvref)$": + type: object + description: + Properties for single LDO/BUCK regulator. + $ref: regulator.yaml# + + properties: + regulator-name: + pattern: "^((ldo|buck)[1-5]|ldolpsr|ldodvref)$" + description: + should be "ldo1", ..., "ldo5", "buck1", ..., "buck5" and "ldolpsr" + for ldolpsr regulator, "ldodvref" for ldodvref reglator. + + rohm,vsel-gpios: + description: + GPIO used to control ldo4 state (when ldo4 is controlled by GPIO). + + rohm,dvs-run-voltage: + description: + PMIC "RUN" state voltage in uV when PMIC HW states are used. See + comments below for bucks/LDOs which support this. 0 means + regulator should be disabled at RUN state. + $ref: "/schemas/types.yaml#/definitions/uint32" + minimum: 0 + maximum: 3300000 + + rohm,dvs-snvs-voltage: + description: + Whether to keep regulator enabled at "SNVS" state or not. + 0 means regulator should be disabled at SNVS state, non zero voltage + keeps regulator enabled. BD71815 does not change voltage level + when PMIC transitions to SNVS.SNVS voltage depends on the previous + state (from which the PMIC transitioned to SNVS). + $ref: "/schemas/types.yaml#/definitions/uint32" + minimum: 0 + maximum: 3300000 + + rohm,dvs-suspend-voltage: + description: + PMIC "SUSPEND" state voltage in uV when PMIC HW states are used. See + comments below for bucks/LDOs which support this. 0 means + regulator should be disabled at SUSPEND state. + $ref: "/schemas/types.yaml#/definitions/uint32" + minimum: 0 + maximum: 3300000 + + rohm,dvs-lpsr-voltage: + description: + PMIC "LPSR" state voltage in uV when PMIC HW states are used. See + comments below for bucks/LDOs which support this. 0 means + regulator should be disabled at LPSR state. + $ref: "/schemas/types.yaml#/definitions/uint32" + minimum: 0 + maximum: 3300000 + + # Bucks 1 and 2 support giving separate voltages for operational states + # (RUN /CLEAN according to data-sheet) and non operational states + # (LPSR/SUSPEND). The voltage is automatically changed when HW + # state changes. Omitting these properties from bucks 1 and 2 leave + # buck voltages to not be toggled by HW state. Enable status may still + # be toggled by state changes depending on HW default settings. + # + # Bucks 3-5 and ldos 1-5 support setting the RUN state voltage here. + # Given RUN voltage is used at all states if regulator is enabled at + # given state. + # Values given for other states are regarded as enable/disable at + # given state (see below). + # + # All regulators except WLED support specifying enable/disable status + # for each of the HW states (RUN/SNVS/SUSPEND/LPSR). HW defaults can + # be overridden by setting voltage to 0 (regulator disabled at given + # state) or non-zero (regulator enabled at given state). Please note + # that setting non zero voltages for bucks 1/2 will also enable voltage + # changes according to state change. + + required: + - regulator-name + + unevaluatedProperties: false + +additionalProperties: false -- 2.25.4 -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =]
