maxim,max8973.yaml

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    1 # SPDX-License-Identifier: GPL-2.0-only
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/regulator/maxim,max8973.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Maxim MAX8973/MAX77621 voltage regulator
    8 
    9 maintainers:
   10   - Krzysztof Kozlowski <krzk@kernel.org>
   11 
   12 allOf:
   13   - $ref: regulator.yaml#
   14 
   15 properties:
   16   compatible:
   17     enum:
   18       - maxim,max8973
   19       - maxim,max77621
   20 
   21   junction-warn-millicelsius:
   22     description: |
   23       Junction warning temperature threshold in millicelsius. If die
   24       temperature crosses this level then device generates the warning
   25       interrupts.
   26       Please note that thermal functionality is only supported on MAX77621. The
   27       supported threshold warning temperature for MAX77621 are 120 degC and 140
   28       degC.
   29 
   30   maxim,dvs-gpio:
   31     maxItems: 1
   32     description: |
   33       GPIO which is connected to DVS pin of device.
   34 
   35   maxim,dvs-default-state:
   36     $ref: /schemas/types.yaml#/definitions/uint32
   37     enum: [0, 1]
   38     description: |
   39       Default state of GPIO during initialisation.
   40       1 for HIGH and 0 for LOW.
   41 
   42   maxim,externally-enable:
   43     type: boolean
   44     description: |
   45       Externally control the regulator output enable/disable.
   46 
   47   maxim,enable-gpio:
   48     maxItems: 1
   49     description: |
   50       GPIO for enable control. If the valid GPIO is provided then externally
   51       enable control will be considered.
   52 
   53   maxim,enable-remote-sense:
   54     type: boolean
   55     description: Enable remote sense.
   56 
   57   maxim,enable-falling-slew-rate:
   58     type: boolean
   59     description: Enable falling slew rate.
   60 
   61   maxim,enable-active-discharge:
   62     type: boolean
   63     description: Eable active discharge.
   64 
   65   maxim,enable-frequency-shift:
   66     type: boolean
   67     description: Enable 9% frequency shift.
   68 
   69   maxim,enable-bias-control:
   70     type: boolean
   71     description: |
   72       Enable bias control which can reduce the startup delay to 20us from 220us.
   73 
   74   maxim,enable-etr:
   75     type: boolean
   76     description: Enable Enhanced Transient Response.
   77 
   78   maxim,enable-high-etr-sensitivity:
   79     type: boolean
   80     description: |
   81       Enhanced transient response circuit is enabled and set for high
   82       sensitivity. If this property is available then etr will be enable
   83       default.
   84       Enhanced transient response (ETR) will affect the configuration of CKADV.
   85 
   86   reg:
   87     maxItems: 1
   88 
   89   interrupts:
   90     maxItems: 1
   91 
   92 required:
   93   - compatible
   94   - reg
   95 
   96 unevaluatedProperties: false
   97 
   98 examples:
   99   - |
  100     i2c {
  101         #address-cells = <1>;
  102         #size-cells = <0>;
  103 
  104         regulator@1b {
  105             compatible = "maxim,max8973";
  106             reg = <0x1b>;
  107 
  108             regulator-min-microvolt = <935000>;
  109             regulator-max-microvolt = <1200000>;
  110             regulator-boot-on;
  111             regulator-always-on;
  112         };
  113     };
  114 
  115   - |
  116     #include <dt-bindings/gpio/gpio.h>
  117     #include <dt-bindings/interrupt-controller/irq.h>
  118 
  119     i2c {
  120         #address-cells = <1>;
  121         #size-cells = <0>;
  122 
  123         regulator@1b {
  124             compatible = "maxim,max77621";
  125             reg = <0x1b>;
  126             interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
  127 
  128             regulator-always-on;
  129             regulator-boot-on;
  130             regulator-min-microvolt = <800000>;
  131             regulator-max-microvolt = <1231250>;
  132             regulator-name = "PPVAR_CPU";
  133             regulator-ramp-delay = <12500>;
  134             maxim,dvs-default-state = <1>;
  135             maxim,enable-active-discharge;
  136             maxim,enable-bias-control;
  137             maxim,enable-etr;
  138             maxim,enable-gpio = <&pmic 5 GPIO_ACTIVE_HIGH>;
  139             maxim,externally-enable;
  140         };
  141     };

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