[PATCH V10 3/5] kbuild: Allow .dtso format for overlay source files

[Viresh Kumar]

Since the overlays dtb files are now named as .dtbo, there is a lot of
interest in similarly naming the overlay source dts files as .dtso.

This patch makes the necessary changes to allow .dtso format for overlay
source files.

Note that we still support generating .dtbo files from .dts files. This
is required for the source files present in drivers/of/unittest-data/,
because they can't be renamed to .dtso as they are used for some runtime
testing as well.

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
---
 scripts/Makefile.lib | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index bc045a54a34e..59e86f67f9e0 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -339,7 +339,7 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE
 
 quiet_cmd_dtc = DTC     $@
 cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
-	$(DTC) -O $(patsubst .%,%,$(suffix $@)) -o $@ -b 0 \
+	$(DTC) -I dts -O $(patsubst .%,%,$(suffix $@)) -o $@ -b 0 \
 		$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
 	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
@@ -347,9 +347,13 @@ cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ;
 $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
 	$(call if_changed_dep,dtc)
 
+# Required for of unit-test files as they can't be renamed to .dtso
 $(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE
 	$(call if_changed_dep,dtc)
 
+$(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE
+	$(call if_changed_dep,dtc)
+
 overlay-y := $(addprefix $(obj)/, $(overlay-y))
 
 quiet_cmd_fdtoverlay = DTOVL   $@
@@ -375,6 +379,9 @@ endef
 $(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
 	$(call if_changed_rule,dtc,yaml)
 
+$(obj)/%.dt.yaml: $(src)/%.dtso $(DTC) $(DT_TMP_SCHEMA) FORCE
+	$(call if_changed_rule,dtc,yaml)
+
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 
 # Bzip2
-- 
2.25.0.rc1.19.g042ed3e048af