0001 Bindings for MAX6651 and MAX6650 I2C fan controllers
0002
0003 Reference:
0004 [1] https://datasheets.maximintegrated.com/en/ds/MAX6650-MAX6651.pdf
0005
0006 Required properties:
0007 - compatible : One of "maxim,max6650" or "maxim,max6651"
0008 - reg : I2C address, one of 0x1b, 0x1f, 0x4b, 0x48.
0009
0010 Optional properties, default is to retain the chip's current setting:
0011 - maxim,fan-microvolt : The supply voltage of the fan, either 5000000 uV or
0012 12000000 uV.
0013 - maxim,fan-prescale : Pre-scaling value, as per datasheet [1]. Lower values
0014 allow more fine-grained control of slower fans.
0015 Valid: 1, 2, 4, 8, 16.
0016 - maxim,fan-target-rpm: Initial requested fan rotation speed. If specified, the
0017 driver selects closed-loop mode and the requested speed.
0018 This ensures the fan is already running before userspace
0019 takes over.
0020
0021 Example:
0022 fan-max6650: max6650@1b {
0023 reg = <0x1b>;
0024 compatible = "maxim,max6650";
0025 maxim,fan-microvolt = <12000000>;
0026 maxim,fan-prescale = <4>;
0027 maxim,fan-target-rpm = <1200>;
0028 };
