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
7 title: ROHM BD9571MWV/BD9574MWF Power Management Integrated Circuit (PMIC)
8
9 maintainers:
10 - Marek Vasut <marek.vasut@gmail.com>
11
12 properties:
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
80 additionalProperties: false
81
82 required:
83 - compatible
84 - reg
85 - interrupts
86 - interrupt-controller
87 - '#interrupt-cells'
88 - gpio-controller
89 - '#gpio-cells'
90
91 oneOf:
92 - required:
93 - rohm,rstbmode-level
94 - required:
95 - rohm,rstbmode-pulse
96
97 examples:
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 };
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