1 Kernel driver nct7904 2 ===================== 3 4 Supported chip: 5 6 * Nuvoton NCT7904D 7 8 Prefix: nct7904 9 10 Addresses: I2C 0x2d, 0x2e 11 12 Datasheet: Publicly available at Nuvoton website 13 14 http://www.nuvoton.com/ 15 16 Author: Vadim V. Vlasov <vvlasov@dev.rtsoft.ru> 17 18 19 Description 20 ----------- 21 22 The NCT7904D is a hardware monitor supporting up to 20 voltage sensors, 23 internal temperature sensor, Intel PECI and AMD SB-TSI CPU temperature 24 interface, up to 12 fan tachometer inputs, up to 4 fan control channels 25 with SmartFan. 26 27 28 Sysfs entries 29 ------------- 30 31 Currently, the driver supports only the following features: 32 33 ======================= ======================================================= 34 in[1-20]_input Input voltage measurements (mV) 35 36 fan[1-12]_input Fan tachometer measurements (rpm) 37 38 temp1_input Local temperature (1/1000 degree, 39 0.125 degree resolution) 40 41 temp[2-9]_input CPU temperatures (1/1000 degree, 42 0.125 degree resolution) 43 44 pwm[1-4]_enable R/W, 1/2 for manual or SmartFan mode 45 Setting SmartFan mode is supported only if it has been 46 previously configured by BIOS (or configuration EEPROM) 47 48 pwm[1-4] R/O in SmartFan mode, R/W in manual control mode 49 ======================= ======================================================= 50 51 The driver checks sensor control registers and does not export the sensors 52 that are not enabled. Anyway, a sensor that is enabled may actually be not 53 connected and thus provide zero readings. 54 55 56 Limitations 57 ----------- 58 59 The following features are not supported in current version: 60 61 - SmartFan control 62 - Watchdog 63 - GPIO 64 - external temperature sensors 65 - SMI 66 - min/max values 67 - many other...
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.