Howard Wang wrote: > appreciate your help. the i2c bus driver of my system is sc1200 from AMD, > there is i2c bus driver scx200_i2c, I just wonder whether this driver supports > two buses, currently it only talks to one bus on my system. I dont know how > I can make it to talk to the second bus. Well I dont know the architecture (and today have no time to look deeper) but I can see (in kernel 2.6.14) second i2c driver: scx200_acb.c scx200_i2c.c Maybe it is what you want? Regards Rudolf