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 24 "mediatek,mt6397" for PMIC MT6397 25 26Optional subnodes: 27 28- rtc 29 Required properties: Should be one of follows 30 - compatible: "mediatek,mt6323-rtc" 31 - compatible: "mediatek,mt6358-rtc" 32 - compatible: "mediatek,mt6397-rtc" 33 For details, see ../rtc/rtc-mt6397.txt 34- regulators 35 Required properties: 36 - compatible: "mediatek,mt6323-regulator" 37 see ../regulator/mt6323-regulator.txt 38 - compatible: "mediatek,mt6358-regulator" 39 see ../regulator/mt6358-regulator.txt 40 - compatible: "mediatek,mt6397-regulator" 41 see ../regulator/mt6397-regulator.txt 42- codec 43 Required properties: 44 - compatible: "mediatek,mt6397-codec" or "mediatek,mt6358-sound" 45- clk 46 Required properties: 47 - compatible: "mediatek,mt6397-clk" 48- led 49 Required properties: 50 - compatible: "mediatek,mt6323-led" 51 see ../leds/leds-mt6323.txt 52 53- keys 54 Required properties: 55 - compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys" 56 see ../input/mtk-pmic-keys.txt 57 58- power-controller 59 Required properties: 60 - compatible: "mediatek,mt6323-pwrc" 61 For details, see ../power/reset/mt6323-poweroff.txt 62 63- pin-controller 64 Required properties: 65 - compatible: "mediatek,mt6397-pinctrl" 66 For details, see ../pinctrl/pinctrl-mt65xx.txt 67 68Example: 69 pwrap: pwrap@1000f000 { 70 compatible = "mediatek,mt8135-pwrap"; 71 72 ... 73 74 pmic { 75 compatible = "mediatek,mt6397"; 76 77 codec: mt6397codec { 78 compatible = "mediatek,mt6397-codec"; 79 }; 80 81 regulators { 82 compatible = "mediatek,mt6397-regulator"; 83 84 mt6397_vpca15_reg: buck_vpca15 { 85 regulator-compatible = "buck_vpca15"; 86 regulator-name = "vpca15"; 87 regulator-min-microvolt = <850000>; 88 regulator-max-microvolt = <1400000>; 89 regulator-ramp-delay = <12500>; 90 regulator-always-on; 91 }; 92 93 mt6397_vgp4_reg: ldo_vgp4 { 94 regulator-compatible = "ldo_vgp4"; 95 regulator-name = "vgp4"; 96 regulator-min-microvolt = <1200000>; 97 regulator-max-microvolt = <3300000>; 98 regulator-enable-ramp-delay = <218>; 99 }; 100 }; 101 }; 102 }; 103