-controller and device available. We should probably have a bus reset
-function for all our target CPUs.
+controller and device available. For boards where a I2C bus reset
+function can be implemented a i2c_init_board() function should be
+provided and enabled by #define'ing CONFIG_SYS_I2C_INIT_BOARD in your
+board's config file. Note that this is NOT necessary when using the
+bit-banging I2C driver (common/soft_i2c.c) as this already includes
+the I2C bus reset sequence.
+