- - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0
- - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0
- - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1
- - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1
- - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2
- - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2
- - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3
- - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3
- - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses
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