"I2C" versus "IIC"

Eugene Surovegin ebs at ebshome.net
Thu Oct 14 05:34:23 EST 2004

On Wed, Oct 13, 2004 at 02:26:23PM -0400, Robert P. J. Day wrote:
>   i was just about to rename some of my variables and macros to be
> consistent with what i *thought* was the standard nomenclature of
> "IIC" as opposed to "I2C".  just checked include/asm-ppc, and grepped
> for case-insensitive instances of both strings ... oh, god.  there's
> really no preferred usage, is there?

Philips' documentation uses I2C, not IIC, so I guess this is 
_official_ name of the _bus_.

Some vendors (like IBM in their 4xx parts) use IIC to name I2C 
_interface_ to distinguish it from I2C _bus_ (they specifically 
mention this in the chip manual).

For example, in the corresponding 4xx driver I used "iic" because it 
was written for IBM IIC _interface_.


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