xref: /linux/Documentation/devicetree/bindings/mfd/rohm,bd9571mwv.yaml (revision 8e07e0e3964ca4e23ce7b68e2096fe660a888942) 
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        $ref: ../regulator/regulator.yaml#
71
72        properties:
73          regulator-name:
74            pattern: "^(vd09|vd18|vd25|vd33|dvfs)$"
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    };
128