| MediaTek MT6397 Multifunction Device Driver |
| |
| MT6397 is a multifunction device with the following sub modules: |
| - Regulator |
| - RTC |
| - Audio codec |
| - GPIO |
| - Clock |
| |
| It is interfaced to host controller using SPI interface by a proprietary hardware |
| called PMIC wrapper or pwrap. MT6397 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" |
| |
| Optional subnodes: |
| |
| - rtc |
| Required properties: |
| - compatible: "mediatek,mt6397-rtc" |
| - regulators |
| Required properties: |
| - compatible: "mediatek,mt6397-regulator" |
| see Documentation/devicetree/bindings/regulator/mt6397-regulator.txt |
| - codec |
| Required properties: |
| - compatible: "mediatek,mt6397-codec" |
| - clk |
| Required properties: |
| - compatible: "mediatek,mt6397-clk" |
| |
| 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>; |
| }; |
| }; |
| }; |
| }; |
