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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- Keys
11- Power controller
12
13It is interfaced to host controller using SPI interface by a proprietary hardware
14called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
15See the following for pwarp node definitions:
16../soc/mediatek/pwrap.txt
17
18This document describes the binding for MFD device and its sub module.
19
20Required properties:
21compatible: "mediatek,mt6397" or "mediatek,mt6323"
22
23Optional subnodes:
24
25- rtc
26 Required properties: Should be one of follows
27 - compatible: "mediatek,mt6323-rtc"
28 - compatible: "mediatek,mt6397-rtc"
29 For details, see ../rtc/rtc-mt6397.txt
30- regulators
31 Required properties:
32 - compatible: "mediatek,mt6397-regulator"
33 see ../regulator/mt6397-regulator.txt
34 - compatible: "mediatek,mt6323-regulator"
35 see ../regulator/mt6323-regulator.txt
36- codec
37 Required properties:
38 - compatible: "mediatek,mt6397-codec"
39- clk
40 Required properties:
41 - compatible: "mediatek,mt6397-clk"
42- led
43 Required properties:
44 - compatible: "mediatek,mt6323-led"
45 see ../leds/leds-mt6323.txt
46
47- keys
48 Required properties:
49 - compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys"
50 see ../input/mtk-pmic-keys.txt
51
52- power-controller
53 Required properties:
54 - compatible: "mediatek,mt6323-pwrc"
55 For details, see ../power/reset/mt6323-poweroff.txt
56
57Example:
58 pwrap: pwrap@1000f000 {
59 compatible = "mediatek,mt8135-pwrap";
60
61 ...
62
63 pmic {
64 compatible = "mediatek,mt6397";
65
66 codec: mt6397codec {
67 compatible = "mediatek,mt6397-codec";
68 };
69
70 regulators {
71 compatible = "mediatek,mt6397-regulator";
72
73 mt6397_vpca15_reg: buck_vpca15 {
74 regulator-compatible = "buck_vpca15";
75 regulator-name = "vpca15";
76 regulator-min-microvolt = <850000>;
77 regulator-max-microvolt = <1400000>;
78 regulator-ramp-delay = <12500>;
79 regulator-always-on;
80 };
81
82 mt6397_vgp4_reg: ldo_vgp4 {
83 regulator-compatible = "ldo_vgp4";
84 regulator-name = "vgp4";
85 regulator-min-microvolt = <1200000>;
86 regulator-max-microvolt = <3300000>;
87 regulator-enable-ramp-delay = <218>;
88 };
89 };
90 };
91 };