xref: /freebsd/sys/contrib/device-tree/Bindings/mfd/mediatek,mt6357.yaml (revision cb7aa33ac6cd46a5434798e50363136e64f3ae98) 
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    description:
50      MT6357 Real Time Clock.
51    properties:
52      compatible:
53        const: mediatek,mt6357-rtc
54      start-year: true
55    required:
56      - compatible
57
58  keys:
59    type: object
60    $ref: /schemas/input/mediatek,pmic-keys.yaml
61    description:
62      MT6357 power and home keys.
63
64required:
65  - compatible
66  - regulators
67
68additionalProperties: false
69
70examples:
71  - |
72    #include <dt-bindings/interrupt-controller/arm-gic.h>
73
74    pwrap {
75        pmic {
76            compatible = "mediatek,mt6357";
77
78            interrupt-parent = <&pio>;
79            interrupts = <145 IRQ_TYPE_LEVEL_HIGH>;
80            interrupt-controller;
81            #interrupt-cells = <2>;
82
83            regulators {
84                mt6357_vproc_reg: buck-vproc {
85                    regulator-name = "vproc";
86                    regulator-min-microvolt = <518750>;
87                    regulator-max-microvolt = <1312500>;
88                    regulator-ramp-delay = <6250>;
89                    regulator-enable-ramp-delay = <220>;
90                    regulator-always-on;
91                };
92
93                // ...
94
95                mt6357_vusb33_reg: ldo-vusb33 {
96                    regulator-name = "vusb33";
97                    regulator-min-microvolt = <3000000>;
98                    regulator-max-microvolt = <3100000>;
99                    regulator-enable-ramp-delay = <264>;
100                };
101            };
102
103            rtc {
104                compatible = "mediatek,mt6357-rtc";
105            };
106
107            keys {
108                compatible = "mediatek,mt6357-keys";
109            };
110        };
111    };
112