84 lines
2.1 KiB
Plaintext
84 lines
2.1 KiB
Plaintext
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
|
|
|
|
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:
|
|
Documentation/devicetree/bindings/soc/mediatek/pwrap.txt
|
|
|
|
This document describes the binding for MFD device and its sub module.
|
|
|
|
Required properties:
|
|
compatible: "mediatek,mt6397" or "mediatek,mt6323"
|
|
|
|
Optional subnodes:
|
|
|
|
- rtc
|
|
Required properties:
|
|
- compatible: "mediatek,mt6397-rtc"
|
|
- regulators
|
|
Required properties:
|
|
- compatible: "mediatek,mt6397-regulator"
|
|
see Documentation/devicetree/bindings/regulator/mt6397-regulator.txt
|
|
- compatible: "mediatek,mt6323-regulator"
|
|
see Documentation/devicetree/bindings/regulator/mt6323-regulator.txt
|
|
- codec
|
|
Required properties:
|
|
- compatible: "mediatek,mt6397-codec"
|
|
- clk
|
|
Required properties:
|
|
- compatible: "mediatek,mt6397-clk"
|
|
- led
|
|
Required properties:
|
|
- compatible: "mediatek,mt6323-led"
|
|
see Documentation/devicetree/bindings/leds/leds-mt6323.txt
|
|
|
|
- keys
|
|
Required properties:
|
|
- compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys"
|
|
see Documentation/devicetree/bindings/input/mtk-pmic-keys.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>;
|
|
};
|
|
};
|
|
};
|
|
};
|