kbuild: remove obj-dtb-y, pbl-dtb-y, lwl-dtb-y syntax

The embedded DTBs are compiled by the chain of pattern rules as follows:

  %.dts -> %.dtb -> %.dtb.S -> %.dtb.o       for barebox proper
  %.dts -> %.dtb -> %.dtb.S -> %.dtb.pbl.o   for pbl

Barebox introduced {obj,pbl,lwl}-dtb-y syntax to put the intermediate
files into extra-y. The purposes of doing so were:

 [1] prevent GNU Make from deleting the intermediate files
 [2] include .*.cmd files

In contrast, Linux does not use a special syntax for embedding DTBs
into the kernel.

For example, as you see in arch/sh/boot/dts/Makefile of Linux 5.6,

   obj-y += <basename>.dtb.o

... just works.

This is because scripts/Kbuild.include specifies .SECONDARY to cater
to [1], and scripts/Makefile.build adds the intermediates to 'targets'
to deal with [2].

Barebox had already imported the same code from Linux, so you can use
obj-y instead of obj-dtb-y, like Linux.

pbl-dtb-y and lwl-dtb-y are barebox-specific cases, so I added the
%.dtb.pbl.o pattern to intermediate_targets.

Going forward, please use obj-y, pbl-y, or lwl-y.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 12 insertions, 12 deletions

diff --git a/arch/mips/dts/Makefile b/arch/mips/dts/Makefile
index 9e8a6a6aaf..b0ad25ecfa 100644
--- a/arch/mips/dts/Makefile
+++ b/arch/mips/dts/Makefile
@@ -1,18 +1,18 @@
 BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_BUILTIN_DTB_NAME))
 ifneq ($(BUILTIN_DTB),)
-obj-dtb-$(CONFIG_BUILTIN_DTB) += $(BUILTIN_DTB).dtb.o
+obj-$(CONFIG_BUILTIN_DTB) += $(BUILTIN_DTB).dtb.o
 endif
 
-pbl-dtb-$(CONFIG_BOARD_8DEVICES_LIMA) += qca4531-8devices-lima.dtb.o
-pbl-dtb-$(CONFIG_BOARD_BLACK_SWIFT) += black-swift.dtb.o
-pbl-dtb-$(CONFIG_BOARD_CI20) += img-ci20.dtb.o
-pbl-dtb-$(CONFIG_BOARD_DLINK_DIR320) += dlink-dir-320.dtb.o
-pbl-dtb-$(CONFIG_BOARD_DPTECHNICS_DPT_MODULE) += ar9331-dptechnics-dpt-module.dtb.o
-pbl-dtb-$(CONFIG_BOARD_OPENEMBEDED_SOM9331) += ar9331-openembed-som9331-board.dtb.o
-pbl-dtb-$(CONFIG_BOARD_LOONGSON_TECH_LS1B) += loongson-ls1b.dtb.o
-pbl-dtb-$(CONFIG_BOARD_QEMU_MALTA) += qemu-malta.dtb.o
-pbl-dtb-$(CONFIG_BOARD_RZX50) += rzx50.dtb.o
-pbl-dtb-$(CONFIG_BOARD_TPLINK_MR3020) += ar9331_tl_mr3020.dtb.o
-pbl-dtb-$(CONFIG_BOARD_TPLINK_WDR4300) += ar9344-tl-wdr4300-v1.7.dtb.o
+pbl-$(CONFIG_BOARD_8DEVICES_LIMA) += qca4531-8devices-lima.dtb.o
+pbl-$(CONFIG_BOARD_BLACK_SWIFT) += black-swift.dtb.o
+pbl-$(CONFIG_BOARD_CI20) += img-ci20.dtb.o
+pbl-$(CONFIG_BOARD_DLINK_DIR320) += dlink-dir-320.dtb.o
+pbl-$(CONFIG_BOARD_DPTECHNICS_DPT_MODULE) += ar9331-dptechnics-dpt-module.dtb.o
+pbl-$(CONFIG_BOARD_OPENEMBEDED_SOM9331) += ar9331-openembed-som9331-board.dtb.o
+pbl-$(CONFIG_BOARD_LOONGSON_TECH_LS1B) += loongson-ls1b.dtb.o
+pbl-$(CONFIG_BOARD_QEMU_MALTA) += qemu-malta.dtb.o
+pbl-$(CONFIG_BOARD_RZX50) += rzx50.dtb.o
+pbl-$(CONFIG_BOARD_TPLINK_MR3020) += ar9331_tl_mr3020.dtb.o
+pbl-$(CONFIG_BOARD_TPLINK_WDR4300) += ar9344-tl-wdr4300-v1.7.dtb.o
 
 clean-files := *.dtb *.dtb.S .*.dtc .*.pre .*.dts *.dtb.lzo