Hi On commit 3d5d2279c0c5d3a7e83f94d98434c1cf29e35311. root@debian:/software/barebox# make ARCH=arm CROSS_COMPILE=/armbin/arm-linux- make[1]: `arch/arm/include/asm/mach-types.h' is up to date. CHK include/linux/version.h CHK include/linux/utsrelease.h SYMLINK include/config.h -> arch/arm/boards/at91sam9263ek//config.h CC drivers/i2c/i2c.o drivers/i2c/i2c.c:375: error: 'i2c_register_master' undeclared here (not in a function) drivers/i2c/i2c.c:375: warning: type defaults to 'int' in declaration of 'i2c_register_master' make[2]: *** [drivers/i2c/i2c.o] Error 1 make[1]: *** [drivers/i2c] Error 2 make: *** [drivers] Error 2 # grep I2C .config # CONFIG_CMD_I2C is not set CONFIG_I2C=y CONFIG_DRIVER_I2C_MC13892=y CONFIG_DRIVER_I2C_MC34704=y CONFIG_DRIVER_I2C_MC9SDZ60=y CONFIG_DRIVER_I2C_LP3972=y # CONFIG_DRIVER_I2C_TWL4030 is not set regards Nataraj