1dts-dirs += altera 2dts-dirs += amd 3dts-dirs += apm 4dts-dirs += arm 5dts-dirs += broadcom 6dts-dirs += cavium 7dts-dirs += exynos 8dts-dirs += freescale 9dts-dirs += hisilicon 10dts-dirs += marvell 11dts-dirs += mediatek 12dts-dirs += qcom 13dts-dirs += rockchip 14dts-dirs += sprd 15dts-dirs += xilinx 16 17subdir-y := $(dts-dirs) 18