Re: [Gumstix-users] I2C Setup for Verdex

[Harry J M. <hj...@ec...>]

On Mon, 4 Aug 2008, Dave Hylands wrote:

>> 3.  Is two wire I2C fine?  As in, just using SDA and SCL?
>
> No - you also need a common ground.
>
>> 4.  Dave's code is set to the /dev/i2c-0 device.  Could it be possible that
>> I somehow need the i2c-1 device, or is this not used?
>
> i2c-1 is for communicating with the PMU chip on the verdex. i2c-0 is
> for the bus brought out on the hirose connector.

Which bus is connected to the tsc2003 on the consoleLCD-16? When I boot my
Verdex it only creates /dev/i2c-1 and not /dev/i2c-0.

This might be a problem with my 2.6.26 patches--and would explain why X is
unhappy with me.

>> 2.  Will both lines need the pull up resistors (I've tried with and without
>> 4.3k resistors)?
>
> Yes.

If the tsc2003 is on /dev/i2c-0, will I need to add these resistors?

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