diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 6104335234c6..3e73dfd838cd 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -269,21 +269,17 @@ $(obj)/%.dtb.S: $(obj)/%.dtb
 	$(call cmd,dt_S_dtb)
 
 quiet_cmd_dtc = DTC     $@
-cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile) $<
+cmd_dtc = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+	$(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 \
+		-i $(srctree)/arch/$(SRCARCH)/boot/dts $(DTC_FLAGS) \
+		-d $(depfile).dtc $(dtc-tmp) ; \
+	cat $(depfile).pre $(depfile).dtc > $(depfile)
 
 $(obj)/%.dtb: $(src)/%.dts FORCE
 	$(call if_changed_dep,dtc)
 
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts)
 
-quiet_cmd_dtc_cpp = DTC+CPP $@
-cmd_dtc_cpp = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
-	$(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile).dtc $(dtc-tmp) ; \
-	cat $(depfile).pre $(depfile).dtc > $(depfile)
-
-$(obj)/%.dtb: $(src)/%.dtsp FORCE
-	$(call if_changed_dep,dtc_cpp)
-
 # Bzip2
 # ---------------------------------------------------------------------------