Just coming in from the Googles to this thread, but I purchased one of these on Friday and here are the devices that are on the various busses:
Code:
# find /sys/devices | grep i2c | grep 00../name | xargs cat
zForce-ir-touch # Touch sensor
tps65185-1 # PMIC (http://www.ti.com/product/TPS65185)
msp430 # I'm pretty sure this is Adobe DRM and is the on-board MSP430 micro on the upper-right
What's *more* interesting is that there are 0.1" pitch headers on my variant. One just south of the PMIC and the other east of the MSP430 chip. I've checked with a Bus Pirate and these don't show any I2C data when running `i2cdetect` or while booting. The voltage for the one by the MSP430 is also detached from the voltage rails of the other two ports.