On Mon, Jun 11, 2012 at 12:53:17PM +0200, Marek Vasut wrote:

Ok, then can you please try asking them how to exactly compute the values in 
timing0-timing2 registers? So we don't have to hardcode them like it's done now?

It's determined I2C clock waveform you want to get.  See i.MX28 RM
"Figure 27-2. I2C Data and Clock Timing" and "Figure 27-3. I2C Data
and Clock Timing Generation".

For example, if you run 12MHz APBX clock, and set HIGH_COUNT to 60,
the I2C clock will have 60 cycle x (1/12MHz) = 5us time for its high
period.

-- 
Regards,
Shawn