0001 MediaTek MT6397/MT6323 Multifunction Device Driver
0002
0003 MT6397/MT6323 is a multifunction device with the following sub modules:
0004 - Regulator
0005 - RTC
0006 - Audio codec
0007 - GPIO
0008 - Clock
0009 - LED
0010 - Keys
0011 - Power controller
0012
0013 It is interfaced to host controller using SPI interface by a proprietary hardware
0014 called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
0015 See the following for pwarp node definitions:
0016 ../soc/mediatek/pwrap.txt
0017
0018 This document describes the binding for MFD device and its sub module.
0019
0020 Required properties:
0021 compatible:
0022 "mediatek,mt6323" for PMIC MT6323
0023 "mediatek,mt6331" for PMIC MT6331 and MT6332
0024 "mediatek,mt6358" for PMIC MT6358 and MT6366
0025 "mediatek,mt6359" for PMIC MT6359
0026 "mediatek,mt6397" for PMIC MT6397
0027
0028 Optional subnodes:
0029
0030 - rtc
0031 Required properties: Should be one of follows
0032 - compatible: "mediatek,mt6323-rtc"
0033 - compatible: "mediatek,mt6331-rtc"
0034 - compatible: "mediatek,mt6358-rtc"
0035 - compatible: "mediatek,mt6397-rtc"
0036 For details, see ../rtc/rtc-mt6397.txt
0037 - regulators
0038 Required properties:
0039 - compatible: "mediatek,mt6323-regulator"
0040 see ../regulator/mt6323-regulator.txt
0041 - compatible: "mediatek,mt6358-regulator"
0042 see ../regulator/mt6358-regulator.txt
0043 - compatible: "mediatek,mt6397-regulator"
0044 see ../regulator/mt6397-regulator.txt
0045 - codec
0046 Required properties:
0047 - compatible: "mediatek,mt6397-codec" or "mediatek,mt6358-sound"
0048 - clk
0049 Required properties:
0050 - compatible: "mediatek,mt6397-clk"
0051 - led
0052 Required properties:
0053 - compatible: "mediatek,mt6323-led"
0054 see ../leds/leds-mt6323.txt
0055
0056 - keys
0057 Required properties: Should be one of the following
0058 - compatible: "mediatek,mt6323-keys"
0059 - compatible: "mediatek,mt6331-keys"
0060 - compatible: "mediatek,mt6397-keys"
0061 see ../input/mtk-pmic-keys.txt
0062
0063 - power-controller
0064 Required properties:
0065 - compatible: "mediatek,mt6323-pwrc"
0066 For details, see ../power/reset/mt6323-poweroff.txt
0067
0068 - pin-controller
0069 Required properties:
0070 - compatible: "mediatek,mt6397-pinctrl"
0071 For details, see ../pinctrl/pinctrl-mt65xx.txt
0072
0073 Example:
0074 pwrap: pwrap@1000f000 {
0075 compatible = "mediatek,mt8135-pwrap";
0076
0077 ...
0078
0079 pmic {
0080 compatible = "mediatek,mt6397";
0081
0082 codec: mt6397codec {
0083 compatible = "mediatek,mt6397-codec";
0084 };
0085
0086 regulators {
0087 compatible = "mediatek,mt6397-regulator";
0088
0089 mt6397_vpca15_reg: buck_vpca15 {
0090 regulator-compatible = "buck_vpca15";
0091 regulator-name = "vpca15";
0092 regulator-min-microvolt = <850000>;
0093 regulator-max-microvolt = <1400000>;
0094 regulator-ramp-delay = <12500>;
0095 regulator-always-on;
0096 };
0097
0098 mt6397_vgp4_reg: ldo_vgp4 {
0099 regulator-compatible = "ldo_vgp4";
0100 regulator-name = "vgp4";
0101 regulator-min-microvolt = <1200000>;
0102 regulator-max-microvolt = <3300000>;
0103 regulator-enable-ramp-delay = <218>;
0104 };
0105 };
0106 };
0107 };
