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1MediaTek MT6397/MT6323 Multifunction Device Driver
2
3MT6397/MT6323 is a multifunction device with the following sub modules:
4- Regulator
5- RTC
6- Audio codec
7- GPIO
8- Clock
9
10It is interfaced to host controller using SPI interface by a proprietary hardware
11called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
12See the following for pwarp node definitions:
13Documentation/devicetree/bindings/soc/pwrap.txt
14
15This document describes the binding for MFD device and its sub module.
16
17Required properties:
18compatible: "mediatek,mt6397" or "mediatek,mt6323"
19
20Optional subnodes:
21
22- rtc
23 Required properties:
24 - compatible: "mediatek,mt6397-rtc"
25- regulators
26 Required properties:
27 - compatible: "mediatek,mt6397-regulator"
28 see Documentation/devicetree/bindings/regulator/mt6397-regulator.txt
29 - compatible: "mediatek,mt6323-regulator"
30 see Documentation/devicetree/bindings/regulator/mt6323-regulator.txt
31- codec
32 Required properties:
33 - compatible: "mediatek,mt6397-codec"
34- clk
35 Required properties:
36 - compatible: "mediatek,mt6397-clk"
37
38Example:
39 pwrap: pwrap@1000f000 {
40 compatible = "mediatek,mt8135-pwrap";
41
42 ...
43
44 pmic {
45 compatible = "mediatek,mt6397";
46
47 codec: mt6397codec {
48 compatible = "mediatek,mt6397-codec";
49 };
50
51 regulators {
52 compatible = "mediatek,mt6397-regulator";
53
54 mt6397_vpca15_reg: buck_vpca15 {
55 regulator-compatible = "buck_vpca15";
56 regulator-name = "vpca15";
57 regulator-min-microvolt = <850000>;
58 regulator-max-microvolt = <1400000>;
59 regulator-ramp-delay = <12500>;
60 regulator-always-on;
61 };
62
63 mt6397_vgp4_reg: ldo_vgp4 {
64 regulator-compatible = "ldo_vgp4";
65 regulator-name = "vgp4";
66 regulator-min-microvolt = <1200000>;
67 regulator-max-microvolt = <3300000>;
68 regulator-enable-ramp-delay = <218>;
69 };
70 };
71 };
72 };