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MediaTek MT6397/MT6323 Multifunction Device Driver
MT6397/MT6323 is a multifunction device with the following sub modules:
- Regulator
- RTC
- Audio codec
- GPIO
- Clock
- LED
- Keys
- Power controller
It is interfaced to host controller using SPI interface by a proprietary hardware
called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
See the following for pwarp node definitions:
../soc/mediatek/pwrap.txt
This document describes the binding for MFD device and its sub module.
Required properties:
compatible:
"mediatek,mt6323" for PMIC MT6323
"mediatek,mt6331" for PMIC MT6331 and MT6332
"mediatek,mt6358" for PMIC MT6358 and MT6366
"mediatek,mt6359" for PMIC MT6359
"mediatek,mt6397" for PMIC MT6397
Optional subnodes:
- rtc
Required properties: Should be one of follows
- compatible: "mediatek,mt6323-rtc"
- compatible: "mediatek,mt6331-rtc"
- compatible: "mediatek,mt6358-rtc"
- compatible: "mediatek,mt6397-rtc"
For details, see ../rtc/rtc-mt6397.txt
- regulators
Required properties:
- compatible: "mediatek,mt6323-regulator"
see ../regulator/mt6323-regulator.txt
- compatible: "mediatek,mt6358-regulator"
see ../regulator/mt6358-regulator.txt
- compatible: "mediatek,mt6397-regulator"
see ../regulator/mt6397-regulator.txt
- codec
Required properties:
- compatible: "mediatek,mt6397-codec" or "mediatek,mt6358-sound"
- clk
Required properties:
- compatible: "mediatek,mt6397-clk"
- led
Required properties:
- compatible: "mediatek,mt6323-led"
see ../leds/leds-mt6323.txt
- keys
Required properties: Should be one of the following
- compatible: "mediatek,mt6323-keys"
- compatible: "mediatek,mt6331-keys"
- compatible: "mediatek,mt6397-keys"
see ../input/mtk-pmic-keys.txt
- power-controller
Required properties:
- compatible: "mediatek,mt6323-pwrc"
For details, see ../power/reset/mt6323-poweroff.txt
- pin-controller
Required properties:
- compatible: "mediatek,mt6397-pinctrl"
For details, see ../pinctrl/pinctrl-mt65xx.txt
Example:
pwrap: pwrap@1000f000 {
compatible = "mediatek,mt8135-pwrap";
...
pmic {
compatible = "mediatek,mt6397";
codec: mt6397codec {
compatible = "mediatek,mt6397-codec";
};
regulators {
compatible = "mediatek,mt6397-regulator";
mt6397_vpca15_reg: buck_vpca15 {
regulator-compatible = "buck_vpca15";
regulator-name = "vpca15";
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <1400000>;
regulator-ramp-delay = <12500>;
regulator-always-on;
};
mt6397_vgp4_reg: ldo_vgp4 {
regulator-compatible = "ldo_vgp4";
regulator-name = "vgp4";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <3300000>;
regulator-enable-ramp-delay = <218>;
};
};
};
};
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