Commit 983b6297 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Lee Jones

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: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Acked-by: default avatarMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/76fdd209e6a2dada7ff50b8ad03eb14e7f3547a6.1635338031.git.geert+renesas@glider.be
parent 8b2051a1
* ROHM BD9571MWV/BD9574MWF Power Management Integrated Circuit (PMIC) bindings
Required properties:
- compatible : Should be "rohm,bd9571mwv" or "rohm,bd9574mwf".
- reg : I2C slave address.
- interrupts : The interrupt line the device is connected to.
- interrupt-controller : Marks the device node as an interrupt controller.
- #interrupt-cells : The number of cells to describe an IRQ, should be 2.
The first cell is the IRQ number.
The second cell is the flags, encoded as trigger
masks from ../interrupt-controller/interrupts.txt.
- gpio-controller : Marks the device node as a GPIO Controller.
- #gpio-cells : Should be two. The first cell is the pin number and
the second cell is used to specify flags.
See ../gpio/gpio.txt for more information.
- regulators: : List of child nodes that specify the regulator
initialization data. Child nodes must be named
after their hardware counterparts:
- vd09
- vd18
- vd25
- vd33
- dvfs
Each child node is defined using the standard
binding for regulators.
Optional properties:
- rohm,ddr-backup-power : Value to use for DDR-Backup Power (default 0).
This is a bitmask that specifies which DDR power
rails need to be kept powered when backup mode is
entered, for system suspend:
- bit 0: DDR0
- bit 1: DDR1
- bit 2: DDR0C
- bit 3: DDR1C
These bits match the KEEPON_DDR* bits in the
documentation for the "BKUP Mode Cnt" register.
- rohm,rstbmode-level: The RSTB signal is configured for level mode, to
accommodate a toggle power switch (the RSTBMODE pin is
strapped low).
- rohm,rstbmode-pulse: The RSTB signal is configured for pulse mode, to
accommodate a momentary power switch (the RSTBMODE pin
is strapped high).
The two properties above are mutually exclusive.
Example:
pmic: pmic@30 {
compatible = "rohm,bd9571mwv";
reg = <0x30>;
interrupt-parent = <&gpio2>;
interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
#interrupt-cells = <2>;
gpio-controller;
#gpio-cells = <2>;
rohm,ddr-backup-power = <0xf>;
rohm,rstbmode-pulse;
regulators {
dvfs: dvfs {
regulator-name = "dvfs";
regulator-min-microvolt = <750000>;
regulator-max-microvolt = <1030000>;
regulator-boot-on;
regulator-always-on;
};
};
};
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/rohm,bd9571mwv.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ROHM BD9571MWV/BD9574MWF Power Management Integrated Circuit (PMIC)
maintainers:
- Marek Vasut <marek.vasut@gmail.com>
properties:
compatible:
enum:
- rohm,bd9571mwv
- rohm,bd9574mwf
reg:
maxItems: 1
interrupts:
maxItems: 1
interrupt-controller: true
'#interrupt-cells':
const: 2
gpio-controller: true
'#gpio-cells':
const: 2
rohm,ddr-backup-power:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0x0
maximum: 0xf
description: |
Value to use for DDR-Backup Power (default 0).
This is a bitmask that specifies which DDR power rails need to be kept
powered when backup mode is entered, for system suspend:
- bit 0: DDR0
- bit 1: DDR1
- bit 2: DDR0C
- bit 3: DDR1C
These bits match the KEEPON_DDR* bits in the documentation for the "BKUP
Mode Cnt" register.
rohm,rstbmode-level:
$ref: /schemas/types.yaml#/definitions/flag
description:
The RSTB signal is configured for level mode, to accommodate a toggle
power switch (the RSTBMODE pin is strapped low).
rohm,rstbmode-pulse:
$ref: /schemas/types.yaml#/definitions/flag
description:
The RSTB signal is configured for pulse mode, to accommodate a momentary
power switch (the RSTBMODE pin is strapped high).
regulators:
type: object
description:
List of child nodes that specify the regulator initialization data.
Child nodes must be named after their hardware counterparts.
patternProperties:
"^(vd09|vd18|vd25|vd33|dvfs)$":
type: object
$ref: ../regulator/regulator.yaml#
properties:
regulator-name:
pattern: "^(vd09|vd18|vd25|vd33|dvfs)$"
unevaluatedProperties: false
additionalProperties: false
additionalProperties: false
required:
- compatible
- reg
- interrupts
- interrupt-controller
- '#interrupt-cells'
- gpio-controller
- '#gpio-cells'
oneOf:
- required:
- rohm,rstbmode-level
- required:
- rohm,rstbmode-pulse
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
pmic: pmic@30 {
compatible = "rohm,bd9571mwv";
reg = <0x30>;
interrupt-parent = <&gpio2>;
interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
#interrupt-cells = <2>;
gpio-controller;
#gpio-cells = <2>;
rohm,ddr-backup-power = <0xf>;
rohm,rstbmode-pulse;
regulators {
dvfs: dvfs {
regulator-name = "dvfs";
regulator-min-microvolt = <750000>;
regulator-max-microvolt = <1030000>;
regulator-boot-on;
regulator-always-on;
};
};
};
};
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