Hi Aneesh, FYI, kernel build failed on tree: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-next head: e6b42eb6a66c188642aeb447312938c6f6ebee86 commit: e6b42eb6a66c188642aeb447312938c6f6ebee86 [1/1] memory: emif: add device tree support to emif driver config: i386-randconfig-k915 (attached as .config) All related error/warning messages: drivers/built-in.o: In function `of_get_min_tck': drivers/memory/of_memory.c:61: undefined reference to `lpddr2_jedec_min_tck' drivers/built-in.o: In function `of_get_ddr_timings': drivers/memory/of_memory.c:151: undefined reference to `lpddr2_jedec_timings' --- 0-DAY kernel build testing backend Open Source Technology Centre Fengguang Wu Intel Corporation