[U-Boot] [PATCH] dts: force dtb recompilation

[Patrick Delaunay]

The dependency for .dtb = .dts is not enough in dts Makefile,
as the dts files are dts pre-proprocessed (include dtsi files,
as specific *-u-boot.dtsi).

For arm architecture, the dependency is correctly managed in
makefile of arch/arm/dts with .cmd files, it is needed to
execute make in this directory.

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---
Issue see on stm32mp1 board

stm32mp157c-ed1.dts is included in stm32mp157c-ev1.dts
and dependency is not correctly managed
(ev1 is not recompiled when ed1 is modified)


 dts/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/dts/Makefile b/dts/Makefile
index a7a6043..bcd611f 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -17,7 +17,6 @@ ifneq ($(EXT_DTB),)
 DTB := $(EXT_DTB)
 else
 DTB := $(ARCH_PATH)/$(DEVICE_TREE).dtb
-dtb_depends += $(DTB:.dtb=.dts)
 endif
 
 $(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
@@ -28,7 +27,7 @@ $(obj)/dt.dtb: $(DTB) FORCE
 
 targets += dt.dtb dt-spl.dtb
 
-$(DTB): $(dtb_depends)
+$(DTB): $(dtb_depends) FORCE
 ifeq ($(EXT_DTB),)
 	$(Q)$(MAKE) $(build)=$(ARCH_PATH) $@
 endif
-- 
2.7.4