xref: /linux/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml (revision 0526b56cbc3c489642bd6a5fe4b718dea7ef0ee8) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mfd/mediatek,mt6357.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: MediaTek MT6357 PMIC
8
9maintainers:
10  - Flora Fu <flora.fu@mediatek.com>
11  - Alexandre Mergnat <amergnat@baylibre.com>
12
13description: |
14  MT6357 is a power management system chip containing 5 buck
15  converters and 29 LDOs. Supported features are audio codec,
16  USB battery charging, fuel gauge, RTC
17
18  This is a multifunction device with the following sub modules:
19  - Regulator
20  - RTC
21  - Keys
22
23  It is interfaced to host controller using SPI interface by a proprietary hardware
24  called PMIC wrapper or pwrap. This MFD is a child device of pwrap.
25  See the following for pwrap node definitions:
26  Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml
27
28properties:
29  compatible:
30    const: mediatek,mt6357
31
32  interrupts:
33    maxItems: 1
34
35  interrupt-controller: true
36
37  "#interrupt-cells":
38    const: 2
39
40  regulators:
41    type: object
42    $ref: /schemas/regulator/mediatek,mt6357-regulator.yaml
43    description:
44      List of MT6357 BUCKs and LDOs regulators.
45
46  rtc:
47    type: object
48    $ref: /schemas/rtc/rtc.yaml#
49    unevaluatedProperties: false
50    description:
51      MT6357 Real Time Clock.
52    properties:
53      compatible:
54        const: mediatek,mt6357-rtc
55      start-year: true
56    required:
57      - compatible
58
59  keys:
60    type: object
61    $ref: /schemas/input/mediatek,pmic-keys.yaml
62    description:
63      MT6357 power and home keys.
64
65required:
66  - compatible
67  - regulators
68
69additionalProperties: false
70
71examples:
72  - |
73    #include <dt-bindings/interrupt-controller/arm-gic.h>
74
75    pwrap {
76        pmic {
77            compatible = "mediatek,mt6357";
78
79            interrupt-parent = <&pio>;
80            interrupts = <145 IRQ_TYPE_LEVEL_HIGH>;
81            interrupt-controller;
82            #interrupt-cells = <2>;
83
84            regulators {
85                mt6357_vproc_reg: buck-vproc {
86                    regulator-name = "vproc";
87                    regulator-min-microvolt = <518750>;
88                    regulator-max-microvolt = <1312500>;
89                    regulator-ramp-delay = <6250>;
90                    regulator-enable-ramp-delay = <220>;
91                    regulator-always-on;
92                };
93
94                // ...
95
96                mt6357_vusb33_reg: ldo-vusb33 {
97                    regulator-name = "vusb33";
98                    regulator-min-microvolt = <3000000>;
99                    regulator-max-microvolt = <3100000>;
100                    regulator-enable-ramp-delay = <264>;
101                };
102            };
103
104            rtc {
105                compatible = "mediatek,mt6357-rtc";
106            };
107
108            keys {
109                compatible = "mediatek,mt6357-keys";
110            };
111        };
112    };
113