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67 lines
1.6 KiB
67 lines
1.6 KiB
Kernel driver nct7904 |
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===================== |
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Supported chip: |
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* Nuvoton NCT7904D |
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Prefix: nct7904 |
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Addresses: I2C 0x2d, 0x2e |
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Datasheet: Publicly available at Nuvoton website |
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http://www.nuvoton.com/ |
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Author: Vadim V. Vlasov <[email protected]> |
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Description |
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----------- |
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The NCT7904D is a hardware monitor supporting up to 20 voltage sensors, |
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internal temperature sensor, Intel PECI and AMD SB-TSI CPU temperature |
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interface, up to 12 fan tachometer inputs, up to 4 fan control channels |
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with SmartFan. |
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Sysfs entries |
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------------- |
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Currently, the driver supports only the following features: |
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======================= ======================================================= |
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in[1-20]_input Input voltage measurements (mV) |
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fan[1-12]_input Fan tachometer measurements (rpm) |
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temp1_input Local temperature (1/1000 degree, |
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0.125 degree resolution) |
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temp[2-9]_input CPU temperatures (1/1000 degree, |
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0.125 degree resolution) |
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pwm[1-4]_enable R/W, 1/2 for manual or SmartFan mode |
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Setting SmartFan mode is supported only if it has been |
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previously configured by BIOS (or configuration EEPROM) |
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pwm[1-4] R/O in SmartFan mode, R/W in manual control mode |
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======================= ======================================================= |
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The driver checks sensor control registers and does not export the sensors |
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that are not enabled. Anyway, a sensor that is enabled may actually be not |
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connected and thus provide zero readings. |
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Limitations |
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----------- |
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The following features are not supported in current version: |
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- SmartFan control |
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- Watchdog |
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- GPIO |
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- external temperature sensors |
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- SMI |
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- min/max values |
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- many other...
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