OMAP3503: i2c device not listed in the /sys/bus/i2c/devices listing of i2c devices

Hi,

I need some explaination on why the listing of the i2c bus and i2c devices attached to the bus is not consistent.

The listing of the i2c devices in the /sys/bus/i2c/devices is below:

1-0048 1-0049 1-004a 1-004b 3-0020 3-0050 i2c-1 i2c-2 i2c-3

However when I use the i2cdetect command to probe the buses I get something else. 

Extract from the i2cdetect -y -r 3 is 

40: 40 41 42 43 -- -- -- -- 48 -- -- -- -- -- -- --

The above shows that there is a device with address 0x48 on the bus 3 of the i2c busses.  But this is different from the output of the /sys/bus/i2c/devices .  Is there a reason for this?

Thanks