max14577.txt

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    1 Maxim MAX14577/77836 Multi-Function Device
    2 
    3 MAX14577 is a Multi-Function Device with Micro-USB Interface Circuit, Li+
    4 Battery Charger and SFOUT LDO output for powering USB devices. It is
    5 interfaced to host controller using I2C.
    6 
    7 MAX77836 additionally contains PMIC (with two LDO regulators) and Fuel Gauge.
    8 For the description of Fuel Gauge low SOC alert interrupt see:
    9 ../power/supply/max17040_battery.txt
   10 
   11 
   12 Required properties:
   13 - compatible : Must be "maxim,max14577" or "maxim,max77836".
   14 - reg : I2C slave address for the max14577 chip (0x25 for max14577/max77836)
   15 - interrupts : IRQ line for the chip.
   16 
   17 
   18 Required nodes:
   19  - charger :
   20         Node for configuring the charger driver.
   21         Required properties:
   22                 - compatible : "maxim,max14577-charger"
   23                         or "maxim,max77836-charger"
   24                 - maxim,fast-charge-uamp : Current in uA for Fast Charge;
   25                         Valid values:
   26                         - for max14577: 90000 - 950000;
   27                         - for max77836: 45000 - 475000;
   28                 - maxim,eoc-uamp : Current in uA for End-Of-Charge mode;
   29                         Valid values:
   30                         - for max14577: 50000 - 200000;
   31                         - for max77836: 5000 - 100000;
   32                 - maxim,ovp-uvolt : OverVoltage Protection Threshold in uV;
   33                         In an overvoltage condition, INT asserts and charging
   34                         stops. Valid values:
   35                         - 6000000, 6500000, 7000000, 7500000;
   36                 - maxim,constant-uvolt : Battery Constant Voltage in uV;
   37                         Valid values:
   38                         - 4000000 - 4280000 (step by 20000);
   39                         - 4350000;
   40 
   41 
   42 Optional nodes:
   43 - max14577-muic/max77836-muic :
   44         Node used only by extcon consumers.
   45         Required properties:
   46                 - compatible : "maxim,max14577-muic" or "maxim,max77836-muic"
   47 
   48 - regulators :
   49         Required properties:
   50                 - compatible : "maxim,max14577-regulator"
   51                         or "maxim,max77836-regulator"
   52 
   53         May contain a sub-node per regulator from the list below. Each
   54         sub-node should contain the constraints and initialization information
   55         for that regulator. See regulator.txt for a description of standard
   56         properties for these sub-nodes.
   57 
   58         List of valid regulator names:
   59         - for max14577: CHARGER, SAFEOUT.
   60         - for max77836: CHARGER, SAFEOUT, LDO1, LDO2.
   61 
   62         The SAFEOUT is a fixed voltage regulator so there is no need to specify
   63         voltages for it.
   64 
   65 
   66 Example:
   67 
   68 #include <dt-bindings/interrupt-controller/irq.h>
   69 
   70 max14577@25 {
   71         compatible = "maxim,max14577";
   72         reg = <0x25>;
   73         interrupt-parent = <&gpx1>;
   74         interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
   75 
   76         muic: max14577-muic {
   77                 compatible = "maxim,max14577-muic";
   78         };
   79 
   80         regulators {
   81                 compatible = "maxim,max14577-regulator";
   82 
   83                 SAFEOUT {
   84                         regulator-name = "SAFEOUT";
   85                 };
   86                 CHARGER {
   87                         regulator-name = "CHARGER";
   88                         regulator-min-microamp = <90000>;
   89                         regulator-max-microamp = <950000>;
   90                         regulator-boot-on;
   91                 };
   92         };
   93 
   94         charger {
   95                 compatible = "maxim,max14577-charger";
   96 
   97                 maxim,constant-uvolt = <4350000>;
   98                 maxim,fast-charge-uamp = <450000>;
   99                 maxim,eoc-uamp = <50000>;
  100                 maxim,ovp-uvolt = <6500000>;
  101         };
  102 };
  103 
  104 
  105 max77836@25 {
  106         compatible = "maxim,max77836";
  107         reg = <0x25>;
  108         interrupt-parent = <&gpx1>;
  109         interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
  110 
  111         muic: max77836-muic {
  112                 compatible = "maxim,max77836-muic";
  113         };
  114 
  115         regulators {
  116                 compatible = "maxim,max77836-regulator";
  117 
  118                 SAFEOUT {
  119                         regulator-name = "SAFEOUT";
  120                 };
  121                 CHARGER {
  122                         regulator-name = "CHARGER";
  123                         regulator-min-microamp = <90000>;
  124                         regulator-max-microamp = <950000>;
  125                         regulator-boot-on;
  126                 };
  127                 LDO1 {
  128                         regulator-name = "LDO1";
  129                         regulator-min-microvolt = <2700000>;
  130                         regulator-max-microvolt = <2700000>;
  131                 };
  132                 LDO2 {
  133                         regulator-name = "LDO2";
  134                         regulator-min-microvolt = <800000>;
  135                         regulator-max-microvolt = <3950000>;
  136                 };
  137         };
  138 
  139         charger {
  140                 compatible = "maxim,max77836-charger";
  141 
  142                 maxim,constant-uvolt = <4350000>;
  143                 maxim,fast-charge-uamp = <225000>;
  144                 maxim,eoc-uamp = <7500>;
  145                 maxim,ovp-uvolt = <6500000>;
  146         };
  147 };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/mfd/max14577.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/mfd/max14577.txt