dts-dirs += altera dts-dirs += amd dts-dirs += apm dts-dirs += arm dts-dirs += broadcom dts-dirs += cavium dts-dirs += exynos dts-dirs += freescale dts-dirs += hisilicon dts-dirs += marvell dts-dirs += mediatek dts-dirs += qcom dts-dirs += rockchip dts-dirs += sprd dts-dirs += xilinx subdir-y := $(dts-dirs)