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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- LED
10
11It is interfaced to host controller using SPI interface by a proprietary hardware
12called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
13See the following for pwarp node definitions:
14Documentation/devicetree/bindings/soc/pwrap.txt
15
16This document describes the binding for MFD device and its sub module.
17
18Required properties:
19compatible: "mediatek,mt6397" or "mediatek,mt6323"
20
21Optional subnodes:
22
23- rtc
24 Required properties:
25 - compatible: "mediatek,mt6397-rtc"
26- regulators
27 Required properties:
28 - compatible: "mediatek,mt6397-regulator"
29 see Documentation/devicetree/bindings/regulator/mt6397-regulator.txt
30 - compatible: "mediatek,mt6323-regulator"
31 see Documentation/devicetree/bindings/regulator/mt6323-regulator.txt
32- codec
33 Required properties:
34 - compatible: "mediatek,mt6397-codec"
35- clk
36 Required properties:
37 - compatible: "mediatek,mt6397-clk"
38- led
39 Required properties:
40 - compatible: "mediatek,mt6323-led"
41 see Documentation/devicetree/bindings/leds/leds-mt6323.txt
42
43Example:
44 pwrap: pwrap@1000f000 {
45 compatible = "mediatek,mt8135-pwrap";
46
47 ...
48
49 pmic {
50 compatible = "mediatek,mt6397";
51
52 codec: mt6397codec {
53 compatible = "mediatek,mt6397-codec";
54 };
55
56 regulators {
57 compatible = "mediatek,mt6397-regulator";
58
59 mt6397_vpca15_reg: buck_vpca15 {
60 regulator-compatible = "buck_vpca15";
61 regulator-name = "vpca15";
62 regulator-min-microvolt = <850000>;
63 regulator-max-microvolt = <1400000>;
64 regulator-ramp-delay = <12500>;
65 regulator-always-on;
66 };
67
68 mt6397_vgp4_reg: ldo_vgp4 {
69 regulator-compatible = "ldo_vgp4";
70 regulator-name = "vgp4";
71 regulator-min-microvolt = <1200000>;
72 regulator-max-microvolt = <3300000>;
73 regulator-enable-ramp-delay = <218>;
74 };
75 };
76 };
77 };