arc: use common make variables for dtb builds

Use dtb-y and always make variables to build dtbs instead of explicit
dtbs rule. This is in preparation to support building all dtbs.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Vineet Gupta <vgupta@synopsys.com>

diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index 8a27a48..cf0cf34 100644 (file)
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -121,7 +121,7 @@ $(boot_targets): vmlinux
        $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
 
 dtbs: scripts
-       $(Q)$(MAKE) $(build)=$(boot)/dts dtbs
+       $(Q)$(MAKE) $(build)=$(boot)/dts
 
 archclean:
        $(Q)$(MAKE) $(clean)=$(boot)

diff --git a/arch/arc/boot/dts/Makefile b/arch/arc/boot/dts/Makefile
index b0e3f19..e8e46f9 100644 (file)
--- a/arch/arc/boot/dts/Makefile
+++ b/arch/arc/boot/dts/Makefile
@@ -6,10 +6,10 @@ ifneq ($(CONFIG_ARC_BUILTIN_DTB_NAME),"")
 endif
 
 obj-y   += $(builtindtb-y).dtb.o
-targets += $(builtindtb-y).dtb
+dtb-y := $(builtindtb-y).dtb
 
 .SECONDARY: $(obj)/$(builtindtb-y).dtb.S
 
-dtbs:  $(addprefix  $(obj)/, $(builtindtb-y).dtb)
 
+always := $(dtb-y)
 clean-files := *.dtb  *.dtb.S