How to enable internal pull-up on I2C2 on Beagleboard xM?

```
What steps will reproduce the problem?
1. Build rowboat-froyo image for Beagleboard xM
2. Measure I2C2 lines (SCL and SDA) from the camera port
3. No toggling, even the kernel issues I2C transaction to probe the camera
device

What is the expected output? What do you see instead?

I understand that this is the correct behavior because without a camera
daughter board, there is no pull-up for I2C2. However the Beagleboard xM manual
says that I can program the board to provide internal pull-up. Can anyone tell
me how to do this? Thanks!

What version of the product are you using? On what operating system?

Beagleboard xM, on rowboat-froyo.

Please provide any additional information below.

```

Original issue reported on code.google.com by `junzha...@hotmail.com` on 27 Jan 2011 at 2:36

Start with the BeagleBoard xM manual's internal pull-up guidance and the rowboat-froyo I2C2 setup. Reproduce the camera-port SCL/SDA measurement during the kernel's camera-probe transaction; done means the internal pull-up is enabled and the I2C2 lines behave as expected.

Written by the indexing model from the issue text.