Hello javier,
javier Martin wrote:
I read a discussion about this subject in the past but it didn't arrive to a conclusion. What would be necessary for supporting two I2C interfaces? Maybe an i2c command that supports changing active interface or something similar?
What do you mean with two I2C interfaces? If you mean 2 with one hardware interface (for example fsl_i2c.c) this is possible with actual code. Search for i2c_set_bus_num(), i2c_get_bus_num() ...
If you need two different hardware interfaces, there is an approach, see:
http://git.denx.de/?p=u-boot/u-boot-i2c.git;a=shortlog;h=refs/heads/multibus...
I ported (hopefully all) hardware i2c drivers to this new approach, but didn;t find the time to test this again from scratch, I just hold it in sync with mainline, and if I find time for testing it again and it works, I vote for including it in mainline ...
But testers are welcome :-)
bye Heiko