SPD problem

Ronald G. Minnich rminnich at lanl.gov
Wed Mar 12 18:10:01 CET 2003

On Wed, 12 Mar 2003, Charlie Song wrote:

> I'm trying to use "scanspd" to read SPD. It works fine for some
> motherboards. But it read back 0s for other motherboards.

some motherboards have two I2C bussees, one for SPD and one for sensors. 
The BIOS uses the I2C bus for SPD, then sets a register so that the I2C 
can only be used for sensors. 

The ASUS CUA works this way. The result is that you have to find the 
hardware that sets the register and change it for SPD.


More information about the coreboot mailing list