xref: /linux/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml (revision 2cd86f02c017bf9733e5cd891381b7d40f6f37ad) 
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  mediatek,hp-pull-down:
41    description:
42      Earphone driver positive output stage short to
43      the audio reference ground.
44    type: boolean
45
46  mediatek,micbias0-microvolt:
47    description: Selects MIC Bias 0 output voltage.
48    enum: [1700000, 1800000, 1900000, 2000000,
49           2100000, 2500000, 2600000, 2700000]
50    default: 1700000
51
52  mediatek,micbias1-microvolt:
53    description: Selects MIC Bias 1 output voltage.
54    enum: [1700000, 1800000, 1900000, 2000000,
55           2100000, 2500000, 2600000, 2700000]
56    default: 1700000
57
58  regulators:
59    type: object
60    $ref: /schemas/regulator/mediatek,mt6357-regulator.yaml
61    unevaluatedProperties: false
62    description:
63      List of MT6357 BUCKs and LDOs regulators.
64
65  rtc:
66    type: object
67    $ref: /schemas/rtc/rtc.yaml#
68    unevaluatedProperties: false
69    description:
70      MT6357 Real Time Clock.
71    properties:
72      compatible:
73        const: mediatek,mt6357-rtc
74      start-year: true
75    required:
76      - compatible
77
78  keys:
79    type: object
80    $ref: /schemas/input/mediatek,pmic-keys.yaml
81    unevaluatedProperties: false
82    description:
83      MT6357 power and home keys.
84
85required:
86  - compatible
87  - regulators
88
89additionalProperties: false
90
91examples:
92  - |
93    #include <dt-bindings/interrupt-controller/arm-gic.h>
94
95    pwrap {
96        pmic {
97            compatible = "mediatek,mt6357";
98
99            interrupt-parent = <&pio>;
100            interrupts = <145 IRQ_TYPE_LEVEL_HIGH>;
101            interrupt-controller;
102            #interrupt-cells = <2>;
103
104            mediatek,micbias0-microvolt = <1700000>;
105            mediatek,micbias1-microvolt = <1700000>;
106
107            regulators {
108                mt6357_vproc_reg: buck-vproc {
109                    regulator-name = "vproc";
110                    regulator-min-microvolt = <518750>;
111                    regulator-max-microvolt = <1312500>;
112                    regulator-ramp-delay = <6250>;
113                    regulator-enable-ramp-delay = <220>;
114                    regulator-always-on;
115                };
116
117                // ...
118
119                mt6357_vusb33_reg: ldo-vusb33 {
120                    regulator-name = "vusb33";
121                    regulator-min-microvolt = <3000000>;
122                    regulator-max-microvolt = <3100000>;
123                    regulator-enable-ramp-delay = <264>;
124                };
125            };
126
127            rtc {
128                compatible = "mediatek,mt6357-rtc";
129            };
130
131            keys {
132                compatible = "mediatek,mt6357-keys";
133            };
134        };
135    };
136