Documentation/devicetree/bindings/mfd/mt6397.txt

   1 MediaTek MT6397/MT6323 Multifunction Device Driver
   2
   3 MT6397/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
  13 It is interfaced to host controller using SPI interface by a proprietary hardware
  14 called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
  15 See the following for pwarp node definitions:
  16 ../soc/mediatek/pwrap.txt
  17
  18 This document describes the binding for MFD device and its sub module.
  19
  20 Required properties:
  21 compatible:
  22         "mediatek,mt6323" for PMIC MT6323
  23         "mediatek,mt6358" for PMIC MT6358
  24         "mediatek,mt6359" for PMIC MT6359
  25         "mediatek,mt6397" for PMIC MT6397
  26
  27 Optional 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
  69 Example:
  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         };