| MediaTek MT6397/MT6323 Multifunction Device Driver | |
| MT6397/MT6323 is a multifunction device with the following sub modules: | |
| - Regulator | |
| - RTC | |
| - Audio codec | |
| - GPIO | |
| - Clock | |
| - LED | |
| 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/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 | |
| 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>; | |
| }; | |
| }; | |
| }; | |
| }; |