[MinnowBoard] I2C bus question

[Darren Hart]

On 6/18/15, 1:53 PM, "Hay Nguonly" <HNguonly at ixiacom.com> wrote:
>Hi,
>
>I¹m look for some help on using I2C adapter in kernel mode.
>I plan to access I2C bus in kernel mode and wanted to know the adapter
>number associated to the I2C signal on the Minnow Max board.

What do you mean by "kernel mode" - as in through a device kernel driver
rather than userspace IOCTL calls?

>
>There are two I2C buses:
>
>I2C (#5)   pin #13 and #15 (Low Speed Expansion ­ top)
>I2C (#6)   pin #21 and #23 (High Speed Expansion - bottom)
>
>Which one should I be using?
>Is there a reason for using one vs the other?

The buses are equivalent for all intents and purposes. Use the one on the
port that fits your application best. If you don't require any of the high
speed signals, the low speed expansion port is more accessible and easier
to prototype with.

-- 
Darren Hart
Intel Open Source Technology Center