The current Makefile will drop the DTC_FLAGS depending on how you build. For example, make dtbs includes correct DTC_FLAGS. However if you run, make nvidia/tegra210-p2371-2180.dtb The DTC_FLAGS are dropped. This appears to be caused by the top level Makefile not including the Makefile from the directory where the dts lives. This normally doesn't matter because most dts files have nothing added from the Makefile. This changes when you have overlays, and the DTC_FLAGS modifier is mandatory for the dtb to work correctly. This change adds a -f argument which includes the Makefile from the directory where the dts file reside. This change is also required for dtbo files. Cc: xe-linux-external@xxxxxxxxx Signed-off-by: Daniel Walker <danielwa@xxxxxxxxx> --- Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index ac16bd92b156..bc245e2dc8d1 100644 --- a/Makefile +++ b/Makefile @@ -1460,10 +1460,10 @@ endif ifneq ($(dtstree),) %.dtb: dtbs_prepare - $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ + $(Q)$(MAKE) -f $(srctree)/$(dtstree)/$(dir $@)Makefile $(build)=$(dtstree) $(dtstree)/$@ %.dtbo: dtbs_prepare - $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ + $(Q)$(MAKE) -f $(srctree)/$(dtstree)/$(dir $@)Makefile $(build)=$(dtstree) $(dtstree)/$@ PHONY += dtbs dtbs_prepare dtbs_install dtbs_check dtbs: dtbs_prepare -- 2.25.1
