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