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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:
22 "mediatek,mt6323" for PMIC MT6323
23 "mediatek,mt6358" for PMIC MT6358
24 "mediatek,mt6359" for PMIC MT6359
25 "mediatek,mt6397" for PMIC MT6397
26
27Optional subnodes:
28
29- rtc
30 Required properties: Should be one of follows
31 - compatible: "mediatek,mt6323-rtc"
32 - compatible: "mediatek,mt6358-rtc"
33 - compatible: "mediatek,mt6397-rtc"
34 For details, see ../rtc/rtc-mt6397.txt
35- regulators
36 Required properties:
37 - compatible: "mediatek,mt6323-regulator"
38 see ../regulator/mt6323-regulator.txt
39 - compatible: "mediatek,mt6358-regulator"
40 see ../regulator/mt6358-regulator.txt
41 - compatible: "mediatek,mt6397-regulator"
42 see ../regulator/mt6397-regulator.txt
43- codec
44 Required properties:
45 - compatible: "mediatek,mt6397-codec" or "mediatek,mt6358-sound"
46- clk
47 Required properties:
48 - compatible: "mediatek,mt6397-clk"
49- led
50 Required properties:
51 - compatible: "mediatek,mt6323-led"
52 see ../leds/leds-mt6323.txt
53
54- keys
55 Required properties:
56 - compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys"
57 see ../input/mtk-pmic-keys.txt
58
59- power-controller
60 Required properties:
61 - compatible: "mediatek,mt6323-pwrc"
62 For details, see ../power/reset/mt6323-poweroff.txt
63
64- pin-controller
65 Required properties:
66 - compatible: "mediatek,mt6397-pinctrl"
67 For details, see ../pinctrl/pinctrl-mt65xx.txt
68
69Example:
70 pwrap: pwrap@1000f000 {
71 compatible = "mediatek,mt8135-pwrap";
72
73 ...
74
75 pmic {
76 compatible = "mediatek,mt6397";
77
78 codec: mt6397codec {
79 compatible = "mediatek,mt6397-codec";
80 };
81
82 regulators {
83 compatible = "mediatek,mt6397-regulator";
84
85 mt6397_vpca15_reg: buck_vpca15 {
86 regulator-compatible = "buck_vpca15";
87 regulator-name = "vpca15";
88 regulator-min-microvolt = <850000>;
89 regulator-max-microvolt = <1400000>;
90 regulator-ramp-delay = <12500>;
91 regulator-always-on;
92 };
93
94 mt6397_vgp4_reg: ldo_vgp4 {
95 regulator-compatible = "ldo_vgp4";
96 regulator-name = "vgp4";
97 regulator-min-microvolt = <1200000>;
98 regulator-max-microvolt = <3300000>;
99 regulator-enable-ramp-delay = <218>;
100 };
101 };
102 };
103 };