[U-Boot-Users] Please pull u-boot-83xx.git (I2C rework)
wd at denx.de
Tue Nov 28 22:03:13 CET 2006
In message <1164737878.31193.38.camel at saruman.qstreams.net> you wrote:
> > Can you be more specific? These two macros are defined in a variety of ways in
> > U-Boot. Soft I2C is not used on any Freescale parts (AFAIK).
> While it's not used on any Freescale evaluation boards, it could
> certainly be implemented on boards with Freescale CPUs. I'm not sure
> why you'd bit-bang I2C if you have nice hardware controllers, but there
...because the bitbanging code is much smaller and easier to
implement and debug than the code that uses the HW controller?
> may be situations where this makes sense. On the other hand, I don't
> know if SOFT_I2C and HARD_I2C can co-exist.
No, theu=y are exclusive. But it should be possible to select any of
> Either way, I don't think we should preclude the use of SOFT I2C on
> Freescale CPUs.
Software Engineering: Embedded and Realtime Systems, Embedded Linux
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