Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 Kernel driver i2c-viapro 2 3 Supported adapters: 4 * VIA Technologies, Inc. VT82C596A/B 5 Datasheet: Sometimes available at the VIA website 6 7 * VIA Technologies, Inc. VT82C686A/B 8 Datasheet: Sometimes available at the VIA website 9 10 * VIA Technologies, Inc. VT8231, VT8233, VT8233A 11 Datasheet: available on request from VIA 12 13 * VIA Technologies, Inc. VT8235, VT8237R, VT8237A, VT8237S, VT8251 14 Datasheet: available on request and under NDA from VIA 15 16 * VIA Technologies, Inc. CX700 17 Datasheet: available on request and under NDA from VIA 18 19 * VIA Technologies, Inc. VX800/VX820 20 Datasheet: available on http://linux.via.com.tw 21 22 * VIA Technologies, Inc. VX855/VX875 23 Datasheet: available on http://linux.via.com.tw 24 25 * VIA Technologies, Inc. VX900 26 Datasheet: available on http://linux.via.com.tw 27 28 Authors: 29 Kyösti Mälkki <kmalkki@cc.hut.fi>, 30 Mark D. Studebaker <mdsxyz123@yahoo.com>, 31 Jean Delvare <jdelvare@suse.de> 32 33 Module Parameters 34 ----------------- 35 36 * force: int 37 Forcibly enable the SMBus controller. DANGEROUS! 38 * force_addr: int 39 Forcibly enable the SMBus at the given address. EXTREMELY DANGEROUS! 40 41 Description 42 ----------- 43 44 i2c-viapro is a true SMBus host driver for motherboards with one of the 45 supported VIA south bridges. 46 47 Your lspci -n listing must show one of these : 48 49 device 1106:3050 (VT82C596A function 3) 50 device 1106:3051 (VT82C596B function 3) 51 device 1106:3057 (VT82C686 function 4) 52 device 1106:3074 (VT8233) 53 device 1106:3147 (VT8233A) 54 device 1106:8235 (VT8231 function 4) 55 device 1106:3177 (VT8235) 56 device 1106:3227 (VT8237R) 57 device 1106:3337 (VT8237A) 58 device 1106:3372 (VT8237S) 59 device 1106:3287 (VT8251) 60 device 1106:8324 (CX700) 61 device 1106:8353 (VX800/VX820) 62 device 1106:8409 (VX855/VX875) 63 device 1106:8410 (VX900) 64 65 If none of these show up, you should look in the BIOS for settings like 66 enable ACPI / SMBus or even USB. 67 68 Except for the oldest chips (VT82C596A/B, VT82C686A and most probably 69 VT8231), this driver supports I2C block transactions. Such transactions 70 are mainly useful to read from and write to EEPROMs. 71 72 The CX700/VX800/VX820 additionally appears to support SMBus PEC, although 73 this driver doesn't implement it yet.