Wolfgang Grandegger wrote:

U-Boot does not (yet) use the FDT and it has therefore to use that ugly 
code to derive the I2C input clock frequency. I think its completely 
legal to put that hardware specific information into the FDT and get rid 
of such code.

Huh?  U-Boot initializes several fields and creates several properties in the
FDT today, so what's wrong with adding another one?  The clock frequencies have
always been calculated by U-Boot, because putting them in the device tree is a
bad idea.

-- 
Timur Tabi
Linux kernel developer at Freescale