xref: /linux/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml (revision 5d2d4a9f603a47403395408f64b1261ca61f6d50) 
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    unevaluatedProperties: false
44    description:
45      List of MT6357 BUCKs and LDOs regulators.
46
47  rtc:
48    type: object
49    $ref: /schemas/rtc/rtc.yaml#
50    unevaluatedProperties: false
51    description:
52      MT6357 Real Time Clock.
53    properties:
54      compatible:
55        const: mediatek,mt6357-rtc
56      start-year: true
57    required:
58      - compatible
59
60  keys:
61    type: object
62    $ref: /schemas/input/mediatek,pmic-keys.yaml
63    unevaluatedProperties: false
64    description:
65      MT6357 power and home keys.
66
67required:
68  - compatible
69  - regulators
70
71additionalProperties: false
72
73examples:
74  - |
75    #include <dt-bindings/interrupt-controller/arm-gic.h>
76
77    pwrap {
78        pmic {
79            compatible = "mediatek,mt6357";
80
81            interrupt-parent = <&pio>;
82            interrupts = <145 IRQ_TYPE_LEVEL_HIGH>;
83            interrupt-controller;
84            #interrupt-cells = <2>;
85
86            regulators {
87                mt6357_vproc_reg: buck-vproc {
88                    regulator-name = "vproc";
89                    regulator-min-microvolt = <518750>;
90                    regulator-max-microvolt = <1312500>;
91                    regulator-ramp-delay = <6250>;
92                    regulator-enable-ramp-delay = <220>;
93                    regulator-always-on;
94                };
95
96                // ...
97
98                mt6357_vusb33_reg: ldo-vusb33 {
99                    regulator-name = "vusb33";
100                    regulator-min-microvolt = <3000000>;
101                    regulator-max-microvolt = <3100000>;
102                    regulator-enable-ramp-delay = <264>;
103                };
104            };
105
106            rtc {
107                compatible = "mediatek,mt6357-rtc";
108            };
109
110            keys {
111                compatible = "mediatek,mt6357-keys";
112            };
113        };
114    };
115