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,mt6331" for PMIC MT6331 and MT6332 24 "mediatek,mt6358" for PMIC MT6358 and MT6366 25 "mediatek,mt6359" for PMIC MT6359 26 "mediatek,mt6397" for PMIC MT6397 27 28Optional subnodes: 29 30- rtc 31 Required properties: Should be one of follows 32 - compatible: "mediatek,mt6323-rtc" 33 - compatible: "mediatek,mt6331-rtc" 34 - compatible: "mediatek,mt6358-rtc" 35 - compatible: "mediatek,mt6397-rtc" 36 For details, see ../rtc/rtc-mt6397.txt 37- regulators 38 Required properties: 39 - compatible: "mediatek,mt6323-regulator" 40 see ../regulator/mt6323-regulator.txt 41 - compatible: "mediatek,mt6358-regulator" 42 see ../regulator/mt6358-regulator.txt 43 - compatible: "mediatek,mt6397-regulator" 44 see ../regulator/mt6397-regulator.txt 45- codec 46 Required properties: 47 - compatible: "mediatek,mt6397-codec" or "mediatek,mt6358-sound" 48- clk 49 Required properties: 50 - compatible: "mediatek,mt6397-clk" 51- led 52 Required properties: 53 - compatible: "mediatek,mt6323-led" 54 see ../leds/leds-mt6323.txt 55 56- keys 57 Required properties: Should be one of the following 58 - compatible: "mediatek,mt6323-keys" 59 - compatible: "mediatek,mt6331-keys" 60 - compatible: "mediatek,mt6397-keys" 61 see ../input/mtk-pmic-keys.txt 62 63- power-controller 64 Required properties: 65 - compatible: "mediatek,mt6323-pwrc" 66 For details, see ../power/reset/mt6323-poweroff.txt 67 68- pin-controller 69 Required properties: 70 - compatible: "mediatek,mt6397-pinctrl" 71 For details, see ../pinctrl/pinctrl-mt65xx.txt 72 73Example: 74 pwrap: pwrap@1000f000 { 75 compatible = "mediatek,mt8135-pwrap"; 76 77 ... 78 79 pmic { 80 compatible = "mediatek,mt6397"; 81 82 codec: mt6397codec { 83 compatible = "mediatek,mt6397-codec"; 84 }; 85 86 regulators { 87 compatible = "mediatek,mt6397-regulator"; 88 89 mt6397_vpca15_reg: buck_vpca15 { 90 regulator-compatible = "buck_vpca15"; 91 regulator-name = "vpca15"; 92 regulator-min-microvolt = <850000>; 93 regulator-max-microvolt = <1400000>; 94 regulator-ramp-delay = <12500>; 95 regulator-always-on; 96 }; 97 98 mt6397_vgp4_reg: ldo_vgp4 { 99 regulator-compatible = "ldo_vgp4"; 100 regulator-name = "vgp4"; 101 regulator-min-microvolt = <1200000>; 102 regulator-max-microvolt = <3300000>; 103 regulator-enable-ramp-delay = <218>; 104 }; 105 }; 106 }; 107 }; 108