We have a board based on i.MX53 SMD design and there is a LCM module which is wired to I2C3 bus. To control the LCM, we are just following the standard /dev/i2c-2 file open (success!) and then ioctl(file, I2C_SLAVE, address). However, we have no clue on the I2C3 address. Could anyone provide us an advise? Thanks!