[U-Boot-Users] Proposal to add "ispeed" (I2C speed) command

[Wolfgang Denk]

In message <04030413332001.12732 at pcj86> you wrote:
> 
> This 'could' be usefull to speed up the i2c communication if there are more 
> than one i2c devices with significant differences between the clock timing; 
> ex. 27C32 (100kHz at 3.3V) and LM75 (400kHz). Tolunay has spoken about like 
> this. But right I see now reason to do so, too. U-Boot has to be a boot 
> loader not a performant operator...

Do you think it is legal to clock the I2C bus at 400 kHz  when  there
are  devices  on  the bus that are spec'ed only for 100 kHz? I may be
wrong, but such an idea sounds awfully risky to me.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
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