rohm,bd9571mwv.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/mfd/rohm,bd9571mwv.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: ROHM BD9571MWV/BD9574MWF Power Management Integrated Circuit (PMIC)
  8
  9maintainers:
 10  - Marek Vasut <marek.vasut@gmail.com>
 11
 12properties:
 13  compatible:
 14    enum:
 15      - rohm,bd9571mwv
 16      - rohm,bd9574mwf
 17
 18  reg:
 19    maxItems: 1
 20
 21  interrupts:
 22    maxItems: 1
 23
 24  interrupt-controller: true
 25
 26  '#interrupt-cells':
 27    const: 2
 28
 29  gpio-controller: true
 30
 31  '#gpio-cells':
 32    const: 2
 33
 34  rohm,ddr-backup-power:
 35    $ref: /schemas/types.yaml#/definitions/uint32
 36    minimum: 0x0
 37    maximum: 0xf
 38    description: |
 39      Value to use for DDR-Backup Power (default 0).
 40      This is a bitmask that specifies which DDR power rails need to be kept
 41      powered when backup mode is entered, for system suspend:
 42        - bit 0: DDR0
 43        - bit 1: DDR1
 44        - bit 2: DDR0C
 45        - bit 3: DDR1C
 46      These bits match the KEEPON_DDR* bits in the documentation for the "BKUP
 47      Mode Cnt" register.
 48
 49  rohm,rstbmode-level:
 50    $ref: /schemas/types.yaml#/definitions/flag
 51    description:
 52      The RSTB signal is configured for level mode, to accommodate a toggle
 53      power switch (the RSTBMODE pin is strapped low).
 54
 55  rohm,rstbmode-pulse:
 56    $ref: /schemas/types.yaml#/definitions/flag
 57    description:
 58      The RSTB signal is configured for pulse mode, to accommodate a momentary
 59      power switch (the RSTBMODE pin is strapped high).
 60
 61  regulators:
 62    type: object
 63    description:
 64      List of child nodes that specify the regulator initialization data.
 65      Child nodes must be named after their hardware counterparts.
 66
 67    patternProperties:
 68      "^(vd09|vd18|vd25|vd33|dvfs)$":
 69        type: object
 70        $ref: /schemas/regulator/regulator.yaml#
 71
 72        properties:
 73          regulator-name:
 74            pattern: "^(vd09|vd18|vd25|vd33|dvfs)$"
 75
 76        unevaluatedProperties: false
 77
 78    additionalProperties: false
 79
 80additionalProperties: false
 81
 82required:
 83  - compatible
 84  - reg
 85  - interrupts
 86  - interrupt-controller
 87  - '#interrupt-cells'
 88  - gpio-controller
 89  - '#gpio-cells'
 90
 91oneOf:
 92  - required:
 93      - rohm,rstbmode-level
 94  - required:
 95      - rohm,rstbmode-pulse
 96
 97examples:
 98  - |
 99    #include <dt-bindings/interrupt-controller/irq.h>
100
101    i2c {
102        #address-cells = <1>;
103        #size-cells = <0>;
104
105        pmic: pmic@30 {
106            compatible = "rohm,bd9571mwv";
107            reg = <0x30>;
108            interrupt-parent = <&gpio2>;
109            interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
110            interrupt-controller;
111            #interrupt-cells = <2>;
112            gpio-controller;
113            #gpio-cells = <2>;
114            rohm,ddr-backup-power = <0xf>;
115            rohm,rstbmode-pulse;
116
117            regulators {
118                dvfs: dvfs {
119                    regulator-name = "dvfs";
120                    regulator-min-microvolt = <750000>;
121                    regulator-max-microvolt = <1030000>;
122                    regulator-boot-on;
123                    regulator-always-on;
124                };
125            };
126        };
127    };