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- Bindings for MAX6651 and MAX6650 I2C fan controllers
- Reference:
- [1] https://datasheets.maximintegrated.com/en/ds/MAX6650-MAX6651.pdf
- Required properties:
- - compatible : One of "maxim,max6650" or "maxim,max6651"
- - reg : I2C address, one of 0x1b, 0x1f, 0x4b, 0x48.
- Optional properties, default is to retain the chip's current setting:
- - maxim,fan-microvolt : The supply voltage of the fan, either 5000000 uV or
- 12000000 uV.
- - maxim,fan-prescale : Pre-scaling value, as per datasheet [1]. Lower values
- allow more fine-grained control of slower fans.
- Valid: 1, 2, 4, 8, 16.
- - maxim,fan-target-rpm: Initial requested fan rotation speed. If specified, the
- driver selects closed-loop mode and the requested speed.
- This ensures the fan is already running before userspace
- takes over.
- Example:
- fan-max6650: max6650@1b {
- reg = <0x1b>;
- compatible = "maxim,max6650";
- maxim,fan-microvolt = <12000000>;
- maxim,fan-prescale = <4>;
- maxim,fan-target-rpm = <1200>;
- };
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