dt-bindings: mfd: bd9571mwv: Convert to json-schema
Convert the ROHM BD9571MWV/BD9574MWF Power Management Integrated Circuit (PMIC) Device Tree binding documentation to json-schema. Make the "regulators" subnode optional, as not all users describe the regulators. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/76fdd209e6a2dada7ff50b8ad03eb14e7f3547a6.1635338031.git.geert+renesas@glider.be
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Geert Uytterhoeven
Lee Jones
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* ROHM BD9571MWV/BD9574MWF Power Management Integrated Circuit (PMIC) bindings
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Required properties:
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- compatible : Should be "rohm,bd9571mwv" or "rohm,bd9574mwf".
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- reg : I2C slave address.
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- interrupts : The interrupt line the device is connected to.
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- interrupt-controller : Marks the device node as an interrupt controller.
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- #interrupt-cells : The number of cells to describe an IRQ, should be 2.
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The first cell is the IRQ number.
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The second cell is the flags, encoded as trigger
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masks from ../interrupt-controller/interrupts.txt.
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- gpio-controller : Marks the device node as a GPIO Controller.
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- #gpio-cells : Should be two. The first cell is the pin number and
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the second cell is used to specify flags.
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See ../gpio/gpio.txt for more information.
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- regulators: : List of child nodes that specify the regulator
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initialization data. Child nodes must be named
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after their hardware counterparts:
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- vd09
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- vd18
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- vd25
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- vd33
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- dvfs
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Each child node is defined using the standard
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binding for regulators.
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Optional properties:
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- rohm,ddr-backup-power : Value to use for DDR-Backup Power (default 0).
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This is a bitmask that specifies which DDR power
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rails need to be kept powered when backup mode is
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entered, for system suspend:
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- bit 0: DDR0
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- bit 1: DDR1
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- bit 2: DDR0C
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- bit 3: DDR1C
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These bits match the KEEPON_DDR* bits in the
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documentation for the "BKUP Mode Cnt" register.
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- rohm,rstbmode-level: The RSTB signal is configured for level mode, to
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accommodate a toggle power switch (the RSTBMODE pin is
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strapped low).
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- rohm,rstbmode-pulse: The RSTB signal is configured for pulse mode, to
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accommodate a momentary power switch (the RSTBMODE pin
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is strapped high).
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The two properties above are mutually exclusive.
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Example:
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pmic: pmic@30 {
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compatible = "rohm,bd9571mwv";
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reg = <0x30>;
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interrupt-parent = <&gpio2>;
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interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
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interrupt-controller;
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#interrupt-cells = <2>;
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gpio-controller;
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#gpio-cells = <2>;
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rohm,ddr-backup-power = <0xf>;
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rohm,rstbmode-pulse;
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regulators {
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dvfs: dvfs {
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regulator-name = "dvfs";
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regulator-min-microvolt = <750000>;
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regulator-max-microvolt = <1030000>;
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regulator-boot-on;
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regulator-always-on;
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};
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};
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};
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127
Documentation/devicetree/bindings/mfd/rohm,bd9571mwv.yaml
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127
Documentation/devicetree/bindings/mfd/rohm,bd9571mwv.yaml
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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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$id: http://devicetree.org/schemas/mfd/rohm,bd9571mwv.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ROHM BD9571MWV/BD9574MWF Power Management Integrated Circuit (PMIC)
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maintainers:
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- Marek Vasut <marek.vasut@gmail.com>
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properties:
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compatible:
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enum:
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- rohm,bd9571mwv
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- rohm,bd9574mwf
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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interrupt-controller: true
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'#interrupt-cells':
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const: 2
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gpio-controller: true
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'#gpio-cells':
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const: 2
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rohm,ddr-backup-power:
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0x0
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maximum: 0xf
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description: |
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Value to use for DDR-Backup Power (default 0).
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This is a bitmask that specifies which DDR power rails need to be kept
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powered when backup mode is entered, for system suspend:
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- bit 0: DDR0
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- bit 1: DDR1
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- bit 2: DDR0C
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- bit 3: DDR1C
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These bits match the KEEPON_DDR* bits in the documentation for the "BKUP
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Mode Cnt" register.
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rohm,rstbmode-level:
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$ref: /schemas/types.yaml#/definitions/flag
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description:
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The RSTB signal is configured for level mode, to accommodate a toggle
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power switch (the RSTBMODE pin is strapped low).
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rohm,rstbmode-pulse:
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$ref: /schemas/types.yaml#/definitions/flag
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description:
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The RSTB signal is configured for pulse mode, to accommodate a momentary
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power switch (the RSTBMODE pin is strapped high).
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regulators:
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type: object
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description:
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List of child nodes that specify the regulator initialization data.
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Child nodes must be named after their hardware counterparts.
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patternProperties:
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"^(vd09|vd18|vd25|vd33|dvfs)$":
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type: object
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$ref: ../regulator/regulator.yaml#
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properties:
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regulator-name:
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pattern: "^(vd09|vd18|vd25|vd33|dvfs)$"
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unevaluatedProperties: false
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additionalProperties: false
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additionalProperties: false
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required:
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- compatible
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- reg
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- interrupts
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- interrupt-controller
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- '#interrupt-cells'
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- gpio-controller
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- '#gpio-cells'
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oneOf:
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- required:
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- rohm,rstbmode-level
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- required:
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- rohm,rstbmode-pulse
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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pmic: pmic@30 {
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compatible = "rohm,bd9571mwv";
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reg = <0x30>;
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interrupt-parent = <&gpio2>;
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interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
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interrupt-controller;
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#interrupt-cells = <2>;
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gpio-controller;
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#gpio-cells = <2>;
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rohm,ddr-backup-power = <0xf>;
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rohm,rstbmode-pulse;
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regulators {
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dvfs: dvfs {
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regulator-name = "dvfs";
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regulator-min-microvolt = <750000>;
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regulator-max-microvolt = <1030000>;
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regulator-boot-on;
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regulator-always-on;
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};
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};
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};
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};
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