1dts-dirs += amd 2dts-dirs += apm 3dts-dirs += arm 4dts-dirs += cavium 5dts-dirs += exynos 6dts-dirs += freescale 7dts-dirs += hisilicon 8dts-dirs += mediatek 9dts-dirs += qcom 10dts-dirs += sprd 11dts-dirs += xilinx 12 13subdir-y := $(dts-dirs) 14