Hi Oliver, > i am running gentoo linux 2.6.10-r6 on a via EPiA-m board that uses a > VT835 southbridge. when you i use the i2c bus, the clock and data > lines appear to be running at 16KHz not the more normal 100kHz or > 400KHz speeds 100kHz and 400kHz are *maximum* frequency for standard and high-speed *I2C* busses. What your VIA bridge really is is an SMBus, so it must run at a speed between 10kHz and 100kHz if I remember correctly. As a matter of fact, I already measured both my VIA and Intel SMBus chips at 16kHz, exactly like you. So I am not surprised at all by what you are reporting. BTW, may I ask how you did measure the frequency? > Do you have any documentation on what the registers inside the via > southbridge chips do, so i can try and fix this problem? If not do, > you know if this is a known problem with the via chip sets? As far as I know, there is no way to change the clock for the Intel SMBus. I have no documentation for the VIA chips but I would suspect that you cannot change it there either. May I know the SMBus speed (or rather slowness) is so important to you? Thanks, -- Jean Delvare
