1MediaTek MT6397/MT6323 Multifunction Device Driver 2 3MT6397/MT6323 is a multifunction device with the following sub modules: 4- Regulator 5- RTC 6- Audio codec 7- GPIO 8- Clock 9- LED 10- Keys 11- Power controller 12 13It is interfaced to host controller using SPI interface by a proprietary hardware 14called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap. 15See the following for pwarp node definitions: 16../soc/mediatek/pwrap.txt 17 18This document describes the binding for MFD device and its sub module. 19 20Required properties: 21compatible: 22 "mediatek,mt6323" for PMIC MT6323 23 "mediatek,mt6358" for PMIC MT6358 and MT6366 24 "mediatek,mt6359" for PMIC MT6359 25 "mediatek,mt6397" for PMIC MT6397 26 27Optional subnodes: 28 29- rtc 30 Required properties: Should be one of follows 31 - compatible: "mediatek,mt6323-rtc" 32 - compatible: "mediatek,mt6358-rtc" 33 - compatible: "mediatek,mt6397-rtc" 34 For details, see ../rtc/rtc-mt6397.txt 35- regulators 36 Required properties: 37 - compatible: "mediatek,mt6323-regulator" 38 see ../regulator/mt6323-regulator.txt 39 - compatible: "mediatek,mt6358-regulator" 40 see ../regulator/mt6358-regulator.txt 41 - compatible: "mediatek,mt6397-regulator" 42 see ../regulator/mt6397-regulator.txt 43- codec 44 Required properties: 45 - compatible: "mediatek,mt6397-codec" or "mediatek,mt6358-sound" 46- clk 47 Required properties: 48 - compatible: "mediatek,mt6397-clk" 49- led 50 Required properties: 51 - compatible: "mediatek,mt6323-led" 52 see ../leds/leds-mt6323.txt 53 54- keys 55 Required properties: 56 - compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys" 57 see ../input/mtk-pmic-keys.txt 58 59- power-controller 60 Required properties: 61 - compatible: "mediatek,mt6323-pwrc" 62 For details, see ../power/reset/mt6323-poweroff.txt 63 64- pin-controller 65 Required properties: 66 - compatible: "mediatek,mt6397-pinctrl" 67 For details, see ../pinctrl/pinctrl-mt65xx.txt 68 69Example: 70 pwrap: pwrap@1000f000 { 71 compatible = "mediatek,mt8135-pwrap"; 72 73 ... 74 75 pmic { 76 compatible = "mediatek,mt6397"; 77 78 codec: mt6397codec { 79 compatible = "mediatek,mt6397-codec"; 80 }; 81 82 regulators { 83 compatible = "mediatek,mt6397-regulator"; 84 85 mt6397_vpca15_reg: buck_vpca15 { 86 regulator-compatible = "buck_vpca15"; 87 regulator-name = "vpca15"; 88 regulator-min-microvolt = <850000>; 89 regulator-max-microvolt = <1400000>; 90 regulator-ramp-delay = <12500>; 91 regulator-always-on; 92 }; 93 94 mt6397_vgp4_reg: ldo_vgp4 { 95 regulator-compatible = "ldo_vgp4"; 96 regulator-name = "vgp4"; 97 regulator-min-microvolt = <1200000>; 98 regulator-max-microvolt = <3300000>; 99 regulator-enable-ramp-delay = <218>; 100 }; 101 }; 102 }; 103 }; 104