0001 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/mfd/rohm,bd9571mwv.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: ROHM BD9571MWV/BD9574MWF Power Management Integrated Circuit (PMIC)
0008
0009 maintainers:
0010 - Marek Vasut <marek.vasut@gmail.com>
0011
0012 properties:
0013 compatible:
0014 enum:
0015 - rohm,bd9571mwv
0016 - rohm,bd9574mwf
0017
0018 reg:
0019 maxItems: 1
0020
0021 interrupts:
0022 maxItems: 1
0023
0024 interrupt-controller: true
0025
0026 '#interrupt-cells':
0027 const: 2
0028
0029 gpio-controller: true
0030
0031 '#gpio-cells':
0032 const: 2
0033
0034 rohm,ddr-backup-power:
0035 $ref: /schemas/types.yaml#/definitions/uint32
0036 minimum: 0x0
0037 maximum: 0xf
0038 description: |
0039 Value to use for DDR-Backup Power (default 0).
0040 This is a bitmask that specifies which DDR power rails need to be kept
0041 powered when backup mode is entered, for system suspend:
0042 - bit 0: DDR0
0043 - bit 1: DDR1
0044 - bit 2: DDR0C
0045 - bit 3: DDR1C
0046 These bits match the KEEPON_DDR* bits in the documentation for the "BKUP
0047 Mode Cnt" register.
0048
0049 rohm,rstbmode-level:
0050 $ref: /schemas/types.yaml#/definitions/flag
0051 description:
0052 The RSTB signal is configured for level mode, to accommodate a toggle
0053 power switch (the RSTBMODE pin is strapped low).
0054
0055 rohm,rstbmode-pulse:
0056 $ref: /schemas/types.yaml#/definitions/flag
0057 description:
0058 The RSTB signal is configured for pulse mode, to accommodate a momentary
0059 power switch (the RSTBMODE pin is strapped high).
0060
0061 regulators:
0062 type: object
0063 description:
0064 List of child nodes that specify the regulator initialization data.
0065 Child nodes must be named after their hardware counterparts.
0066
0067 patternProperties:
0068 "^(vd09|vd18|vd25|vd33|dvfs)$":
0069 type: object
0070 $ref: ../regulator/regulator.yaml#
0071
0072 properties:
0073 regulator-name:
0074 pattern: "^(vd09|vd18|vd25|vd33|dvfs)$"
0075
0076 unevaluatedProperties: false
0077
0078 additionalProperties: false
0079
0080 additionalProperties: false
0081
0082 required:
0083 - compatible
0084 - reg
0085 - interrupts
0086 - interrupt-controller
0087 - '#interrupt-cells'
0088 - gpio-controller
0089 - '#gpio-cells'
0090
0091 oneOf:
0092 - required:
0093 - rohm,rstbmode-level
0094 - required:
0095 - rohm,rstbmode-pulse
0096
0097 examples:
0098 - |
0099 #include <dt-bindings/interrupt-controller/irq.h>
0100
0101 i2c {
0102 #address-cells = <1>;
0103 #size-cells = <0>;
0104
0105 pmic: pmic@30 {
0106 compatible = "rohm,bd9571mwv";
0107 reg = <0x30>;
0108 interrupt-parent = <&gpio2>;
0109 interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
0110 interrupt-controller;
0111 #interrupt-cells = <2>;
0112 gpio-controller;
0113 #gpio-cells = <2>;
0114 rohm,ddr-backup-power = <0xf>;
0115 rohm,rstbmode-pulse;
0116
0117 regulators {
0118 dvfs: dvfs {
0119 regulator-name = "dvfs";
0120 regulator-min-microvolt = <750000>;
0121 regulator-max-microvolt = <1030000>;
0122 regulator-boot-on;
0123 regulator-always-on;
0124 };
0125 };
0126 };
0127 };
