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46 lines
1.4 KiB
46 lines
1.4 KiB
.. SPDX-License-Identifier: GPL-2.0-or-later |
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Kernel driver max6620 |
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===================== |
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Supported chips: |
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Maxim MAX6620 |
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Prefix: 'max6620' |
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Addresses scanned: none |
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Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6620.pdf |
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Authors: |
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- L\. Grunenberg <[email protected]> |
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- Cumulus Networks <[email protected]> |
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- Shuotian Cheng <[email protected]> |
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- Arun Saravanan Balachandran <[email protected]> |
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Description |
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----------- |
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This driver implements support for Maxim MAX6620 fan controller. |
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The driver configures the fan controller in RPM mode. To give the readings more |
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range or accuracy, the desired value can be set by a programmable register |
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(1, 2, 4, 8, 16 or 32). Set higher values for larger speeds. |
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The driver provides the following sensor access in sysfs: |
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================ ======= ===================================================== |
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fan[1-4]_alarm ro Fan alarm. |
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fan[1-4]_div rw Sets the nominal RPM range of the fan. Valid values |
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are 1, 2, 4, 8, 16 and 32. |
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fan[1-4]_input ro Fan speed in RPM. |
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fan[1-4]_target rw Desired fan speed in RPM. |
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================ ======= ===================================================== |
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Usage notes |
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----------- |
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This driver does not auto-detect devices. You will have to instantiate the |
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devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for |
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details.
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