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| Commit | Line | Data |
|---|---|---|
| 42dc3023 GL |
1 | * Maxim MAX8973 Voltage Regulator |
| 2 | ||
| 3 | Required properties: | |
| 4 | ||
| 0f7d6ece LD |
5 | - compatible: must be one of following: |
| 6 | "maxim,max8973" | |
| 7 | "maxim,max77621". | |
| 42dc3023 GL |
8 | - reg: the i2c slave address of the regulator. It should be 0x1b. |
| 9 | ||
| 10 | Any standard regulator properties can be used to configure the single max8973 | |
| 11 | DCDC. | |
| 12 | ||
| c2ffa973 LD |
13 | Optional properties: |
| 14 | ||
| 15 | -maxim,externally-enable: boolean, externally control the regulator output | |
| 16 | enable/disable. | |
| 69eb0980 LD |
17 | -maxim,enable-gpio: GPIO for enable control. If the valid GPIO is provided |
| 18 | then externally enable control will be considered. | |
| c2ffa973 LD |
19 | -maxim,dvs-gpio: GPIO which is connected to DVS pin of device. |
| 20 | -maxim,dvs-default-state: Default state of GPIO during initialisation. | |
| 21 | 1 for HIGH and 0 for LOW. | |
| 22 | -maxim,enable-remote-sense: boolean, enable reote sense. | |
| 23 | -maxim,enable-falling-slew-rate: boolean, enable falling slew rate. | |
| 24 | -maxim,enable-active-discharge: boolean: enable active discharge. | |
| 25 | -maxim,enable-frequency-shift: boolean, enable 9% frequency shift. | |
| 26 | -maxim,enable-bias-control: boolean, enable bias control. By enabling this | |
| 27 | startup delay can be reduce to 20us from 220us. | |
| 3692db3a LD |
28 | -maxim,enable-etr: boolean, enable Enhanced Transient Response. |
| 29 | -maxim,enable-high-etr-sensitivity: boolean, Enhanced transient response | |
| 30 | circuit is enabled and set for high sensitivity. If this | |
| 31 | property is available then etr will be enable default. | |
| 32 | ||
| 33 | Enhanced transient response (ETR) will affect the configuration of CKADV. | |
| c2ffa973 | 34 | |
| 19dd159c LD |
35 | -junction-warn-millicelsius: u32, junction warning temperature threshold |
| 36 | in millicelsius. If die temperature crosses this level then | |
| 37 | device generates the warning interrupts. | |
| 38 | ||
| 39 | Please note that thermal functionality is only supported on MAX77621. The | |
| 40 | supported threshold warning temperature for MAX77621 are 120 degC and 140 degC. | |
| 41 | ||
| 42dc3023 GL |
42 | Example: |
| 43 | ||
| 44 | max8973@1b { | |
| f986c356 | 45 | compatible = "maxim,max8973"; |
| 42dc3023 GL |
46 | reg = <0x1b>; |
| 47 | ||
| 48 | regulator-min-microvolt = <935000>; | |
| 49 | regulator-max-microvolt = <1200000>; | |
| 50 | regulator-boot-on; | |
| 51 | regulator-always-on; | |
| 52 | }; |