But in kernel i can't able to select and read the i2c bus 3.I tried via accessing /dev/i2c-3 but i'm not. For selecting i2c bus 3 i used 'i2c dev 3' command. In u-boot i can able to read those registers. I need to read the register values from i2c bus 3. By default i2c bus 0 is selected, there we can able to read and write the register values.We can now run i2cdump as shown above (type 'i2cdump -help' or 'man i2cdump' for more info), or we can scan the I2C bus to see what devices are. That final step is just for convenience: it allows user 'pi' to launch the newly installed tools (i2cdetect, i2cdump, i2cget, i2cset) without having to use 'sudo' all the time.
