Merge tag 'devicetree-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree updates from Rob Herring:
 "A bigger diffstat than usual with the kbuild changes and a tree wide
  fix in the binding documentation.

  Summary:

   - kbuild cleanups and improvements for dtbs

   - Code clean-up of overlay code and fixing for some long standing
     memory leak and race condition in applying overlays

   - Improvements to DT memory usage making sysfs/kobjects optional and
     skipping unflattening of disabled nodes. This is part of kernel
     tinification efforts.

   - Final piece of removing storing the full path for every DT node.
     The prerequisite conversion of printk's to use device_node format
     specifier happened in 4.14.

   - Sync with current upstream dtc. This brings additional checks to
     dtb compiling.

   - Binding doc tree wide removal of leading 0s from examples

   - RTC binding documentation adding missing devices and some
     consolidation of duplicated bindings

   - Vendor prefix documentation for nutsboard, Silicon Storage
     Technology, shimafuji, Tecon Microprocessor Technologies, DH
     electronics GmbH, Opal Kelly, and Next Thing"

* tag 'devicetree-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (55 commits)
  dt-bindings: usb: add #phy-cells to usb-nop-xceiv
  dt-bindings: Remove leading zeros from bindings notation
  kbuild: handle dtb-y and CONFIG_OF_ALL_DTBS natively in Makefile.lib
  MIPS: dts: remove bogus bcm96358nb4ser.dtb from dtb-y entry
  kbuild: clean up *.dtb and *.dtb.S patterns from top-level Makefile
  .gitignore: move *.dtb and *.dtb.S patterns to the top-level .gitignore
  .gitignore: sort normal pattern rules alphabetically
  dt-bindings: add vendor prefix for Next Thing Co.
  scripts/dtc: Update to upstream version v1.4.5-6-gc1e55a5513e9
  of: dynamic: fix memory leak related to properties of __of_node_dup
  of: overlay: make pr_err() string unique
  of: overlay: pr_err from return NOTIFY_OK to overlay apply/remove
  of: overlay: remove unneeded check for NULL kbasename()
  of: overlay: remove a dependency on device node full_name
  of: overlay: simplify applying symbols from an overlay
  of: overlay: avoid race condition between applying multiple overlays
  of: overlay: loosen overly strict phandle clash check
  of: overlay: expand check of whether overlay changeset can be removed
  of: overlay: detect cases where device tree may become corrupt
  of: overlay: minor restructuring
  ...

29 files changed, 27 insertions, 140 deletions

diff --git a/arch/arm64/boot/dts/.gitignore b/arch/arm64/boot/dts/.gitignore
deleted file mode 100644
index b60ed208c779..000000000000
--- a/arch/arm64/boot/dts/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-*.dtb
diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
index c6684ab8e201..d7c22d51bc50 100644
--- a/arch/arm64/boot/dts/Makefile
+++ b/arch/arm64/boot/dts/Makefile
@@ -1,34 +1,26 @@
 # SPDX-License-Identifier: GPL-2.0
-dts-dirs += actions
-dts-dirs += al
-dts-dirs += allwinner
-dts-dirs += altera
-dts-dirs += amd
-dts-dirs += amlogic
-dts-dirs += apm
-dts-dirs += arm
-dts-dirs += broadcom
-dts-dirs += cavium
-dts-dirs += exynos
-dts-dirs += freescale
-dts-dirs += hisilicon
-dts-dirs += marvell
-dts-dirs += mediatek
-dts-dirs += nvidia
-dts-dirs += qcom
-dts-dirs += realtek
-dts-dirs += renesas
-dts-dirs += rockchip
-dts-dirs += socionext
-dts-dirs += sprd
-dts-dirs += xilinx
-dts-dirs += lg
-dts-dirs += zte
-
-subdir-y	:= $(dts-dirs)
-
-dtstree		:= $(srctree)/$(src)
-
-dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(foreach d,$(dts-dirs), $(wildcard $(dtstree)/$(d)/*.dts)))
-
-always		:= $(dtb-y)
+subdir-y += actions
+subdir-y += al
+subdir-y += allwinner
+subdir-y += altera
+subdir-y += amd
+subdir-y += amlogic
+subdir-y += apm
+subdir-y += arm
+subdir-y += broadcom
+subdir-y += cavium
+subdir-y += exynos
+subdir-y += freescale
+subdir-y += hisilicon
+subdir-y += marvell
+subdir-y += mediatek
+subdir-y += nvidia
+subdir-y += qcom
+subdir-y += realtek
+subdir-y += renesas
+subdir-y += rockchip
+subdir-y += socionext
+subdir-y += sprd
+subdir-y += xilinx
+subdir-y += lg
+subdir-y += zte
diff --git a/arch/arm64/boot/dts/actions/Makefile b/arch/arm64/boot/dts/actions/Makefile
index 62922d688ce3..cc4661256356 100644
--- a/arch/arm64/boot/dts/actions/Makefile
+++ b/arch/arm64/boot/dts/actions/Makefile
@@ -1,5 +1 @@
 dtb-$(CONFIG_ARCH_ACTIONS) += s900-bubblegum-96.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/al/Makefile b/arch/arm64/boot/dts/al/Makefile
index 8a6cde4f9b23..036e387112ed 100644
--- a/arch/arm64/boot/dts/al/Makefile
+++ b/arch/arm64/boot/dts/al/Makefile
@@ -1,5 +1 @@
 dtb-$(CONFIG_ARCH_ALPINE)	+= alpine-v2-evp.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
index ff35e184e422..7d3acb355ff3 100644
--- a/arch/arm64/boot/dts/allwinner/Makefile
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -9,7 +9,3 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-orangepi-pc2.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-orangepi-prime.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-orangepi-zero-plus2.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-nanopi-neo2.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/altera/Makefile b/arch/arm64/boot/dts/altera/Makefile
index d7a641698d77..68ba0882a8bb 100644
--- a/arch/arm64/boot/dts/altera/Makefile
+++ b/arch/arm64/boot/dts/altera/Makefile
@@ -1,5 +1 @@
 dtb-$(CONFIG_ARCH_STRATIX10) += socfpga_stratix10_socdk.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/amd/Makefile b/arch/arm64/boot/dts/amd/Makefile
index f9963d63006d..6a6093064a32 100644
--- a/arch/arm64/boot/dts/amd/Makefile
+++ b/arch/arm64/boot/dts/amd/Makefile
@@ -2,7 +2,3 @@
 dtb-$(CONFIG_ARCH_SEATTLE) += amd-overdrive.dtb \
 			amd-overdrive-rev-b0.dtb amd-overdrive-rev-b1.dtb \
 			husky.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index 543416b8dff5..f84b83bb9809 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -20,7 +20,3 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxm-nexbox-a1.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-q200.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-q201.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-rbox-pro.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/apm/Makefile b/arch/arm64/boot/dts/apm/Makefile
index a10fbdb34229..55b5cdca13b8 100644
--- a/arch/arm64/boot/dts/apm/Makefile
+++ b/arch/arm64/boot/dts/apm/Makefile
@@ -1,7 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_XGENE) += apm-mustang.dtb
 dtb-$(CONFIG_ARCH_XGENE) += apm-merlin.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/arm/Makefile b/arch/arm64/boot/dts/arm/Makefile
index 470378addca4..4256bae99925 100644
--- a/arch/arm64/boot/dts/arm/Makefile
+++ b/arch/arm64/boot/dts/arm/Makefile
@@ -3,7 +3,3 @@ dtb-$(CONFIG_ARCH_VEXPRESS) += foundation-v8.dtb foundation-v8-gicv3.dtb
 dtb-$(CONFIG_ARCH_VEXPRESS) += juno.dtb juno-r1.dtb juno-r2.dtb
 dtb-$(CONFIG_ARCH_VEXPRESS) += rtsm_ve-aemv8a.dtb
 dtb-$(CONFIG_ARCH_VEXPRESS) += vexpress-v2f-1xv7-ca53x2.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
index 3df2db7f8878..2a2591ef1fee 100644
--- a/arch/arm64/boot/dts/broadcom/Makefile
+++ b/arch/arm64/boot/dts/broadcom/Makefile
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_BCM2835) += bcm2837-rpi-3-b.dtb
 
-dts-dirs	+= northstar2
-dts-dirs	+= stingray
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
+subdir-y	+= northstar2
+subdir-y	+= stingray
diff --git a/arch/arm64/boot/dts/broadcom/northstar2/Makefile b/arch/arm64/boot/dts/broadcom/northstar2/Makefile
index e01a1485b813..83736004336d 100644
--- a/arch/arm64/boot/dts/broadcom/northstar2/Makefile
+++ b/arch/arm64/boot/dts/broadcom/northstar2/Makefile
@@ -1,6 +1,2 @@
 dtb-$(CONFIG_ARCH_BCM_IPROC) += ns2-svk.dtb
 dtb-$(CONFIG_ARCH_BCM_IPROC) += ns2-xmc.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/broadcom/stingray/Makefile b/arch/arm64/boot/dts/broadcom/stingray/Makefile
index 04bb302f3233..c4d06cffcb11 100644
--- a/arch/arm64/boot/dts/broadcom/stingray/Makefile
+++ b/arch/arm64/boot/dts/broadcom/stingray/Makefile
@@ -1,7 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_BCM_IPROC) += bcm958742k.dtb
 dtb-$(CONFIG_ARCH_BCM_IPROC) += bcm958742t.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/cavium/Makefile b/arch/arm64/boot/dts/cavium/Makefile
index 9f68c277302b..c178f7e06e18 100644
--- a/arch/arm64/boot/dts/cavium/Makefile
+++ b/arch/arm64/boot/dts/cavium/Makefile
@@ -1,7 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_THUNDER) += thunder-88xx.dtb
 dtb-$(CONFIG_ARCH_THUNDER2) += thunder2-99xx.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/exynos/Makefile b/arch/arm64/boot/dts/exynos/Makefile
index 6914b2cbd397..e0a2facde6a2 100644
--- a/arch/arm64/boot/dts/exynos/Makefile
+++ b/arch/arm64/boot/dts/exynos/Makefile
@@ -3,7 +3,3 @@ dtb-$(CONFIG_ARCH_EXYNOS) += \
 	exynos5433-tm2.dtb	\
 	exynos5433-tm2e.dtb	\
 	exynos7-espresso.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index dc02e82aba7c..86e18adb695a 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -13,7 +13,3 @@ dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2080a-rdb.dtb
 dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2080a-simu.dtb
 dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2088a-qds.dtb
 dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2088a-rdb.dtb
- 
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/hisilicon/Makefile b/arch/arm64/boot/dts/hisilicon/Makefile
index 521ed484a5d1..03d93f8ef8a9 100644
--- a/arch/arm64/boot/dts/hisilicon/Makefile
+++ b/arch/arm64/boot/dts/hisilicon/Makefile
@@ -5,7 +5,3 @@ dtb-$(CONFIG_ARCH_HISI) += hi6220-hikey.dtb
 dtb-$(CONFIG_ARCH_HISI) += hip05-d02.dtb
 dtb-$(CONFIG_ARCH_HISI) += hip06-d03.dtb
 dtb-$(CONFIG_ARCH_HISI) += hip07-d05.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/lg/Makefile b/arch/arm64/boot/dts/lg/Makefile
index e345b8e58efe..4c3959e24e1b 100644
--- a/arch/arm64/boot/dts/lg/Makefile
+++ b/arch/arm64/boot/dts/lg/Makefile
@@ -1,7 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_LG1K) += lg1312-ref.dtb
 dtb-$(CONFIG_ARCH_LG1K) += lg1313-ref.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/marvell/Makefile b/arch/arm64/boot/dts/marvell/Makefile
index 5633676fa9d0..cb454beede55 100644
--- a/arch/arm64/boot/dts/marvell/Makefile
+++ b/arch/arm64/boot/dts/marvell/Makefile
@@ -10,7 +10,3 @@ dtb-$(CONFIG_ARCH_MVEBU) += armada-7040-db.dtb
 dtb-$(CONFIG_ARCH_MVEBU) += armada-8040-db.dtb
 dtb-$(CONFIG_ARCH_MVEBU) += armada-8040-mcbin.dtb
 dtb-$(CONFIG_ARCH_MVEBU) += armada-8080-db.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index 1d05d1824fa9..ac17f60f998c 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -5,7 +5,3 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6795-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-evb.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/nvidia/Makefile b/arch/arm64/boot/dts/nvidia/Makefile
index 6bc0c6ab4b7f..676aa2f238d1 100644
--- a/arch/arm64/boot/dts/nvidia/Makefile
+++ b/arch/arm64/boot/dts/nvidia/Makefile
@@ -5,6 +5,3 @@ dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p2371-2180.dtb
 dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p2571.dtb
 dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-smaug.dtb
 dtb-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186-p2771-0000.dtb
-
-always		:= $(dtb-y)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index e7b25bee3f1e..55ec5ee7f7e8 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -6,7 +6,3 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-bullhead-rev-101.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8994-angler-rev-101.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8996-mtp.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/realtek/Makefile b/arch/arm64/boot/dts/realtek/Makefile
index 8521e921e59a..6e2ae59a3745 100644
--- a/arch/arm64/boot/dts/realtek/Makefile
+++ b/arch/arm64/boot/dts/realtek/Makefile
@@ -1,5 +1 @@
 dtb-$(CONFIG_ARCH_REALTEK) += rtd1295-zidoo-x9s.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index d417701640bd..6b282283f1bf 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -4,6 +4,3 @@ dtb-$(CONFIG_ARCH_R8A7795) += r8a7795-salvator-xs.dtb
 dtb-$(CONFIG_ARCH_R8A7795) += r8a7795-es1-salvator-x.dtb r8a7795-es1-h3ulcb.dtb
 dtb-$(CONFIG_ARCH_R8A7796) += r8a7796-salvator-x.dtb r8a7796-m3ulcb.dtb
 dtb-$(CONFIG_ARCH_R8A77995) += r8a77995-draak.dtb
-
-always		:= $(dtb-y)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 84801892ee61..ce2701e37d00 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -11,7 +11,3 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-firefly.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-kevin.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-puma-haikou.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire-excavator.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/socionext/Makefile b/arch/arm64/boot/dts/socionext/Makefile
index 72dbe8acd9fd..d45441249cb5 100644
--- a/arch/arm64/boot/dts/socionext/Makefile
+++ b/arch/arm64/boot/dts/socionext/Makefile
@@ -5,6 +5,3 @@ dtb-$(CONFIG_ARCH_UNIPHIER) += \
 	uniphier-ld20-global.dtb \
 	uniphier-ld20-ref.dtb \
 	uniphier-pxs3-ref.dtb
-
-always		:= $(dtb-y)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/sprd/Makefile b/arch/arm64/boot/dts/sprd/Makefile
index d7188be103c5..2bdc23804f40 100644
--- a/arch/arm64/boot/dts/sprd/Makefile
+++ b/arch/arm64/boot/dts/sprd/Makefile
@@ -1,7 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_SPRD) += sc9836-openphone.dtb \
 			sp9860g-1h10.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/xilinx/Makefile b/arch/arm64/boot/dts/xilinx/Makefile
index ae16427f6a4a..a2d67084a514 100644
--- a/arch/arm64/boot/dts/xilinx/Makefile
+++ b/arch/arm64/boot/dts/xilinx/Makefile
@@ -1,5 +1 @@
 dtb-$(CONFIG_ARCH_ZYNQMP) += zynqmp-ep108.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/zte/Makefile b/arch/arm64/boot/dts/zte/Makefile
index d86c4def6bc9..14a1cdfc1559 100644
--- a/arch/arm64/boot/dts/zte/Makefile
+++ b/arch/arm64/boot/dts/zte/Makefile
@@ -1,6 +1,2 @@
 dtb-$(CONFIG_ARCH_ZX) += zx296718-evb.dtb
 dtb-$(CONFIG_ARCH_ZX) += zx296718-pcbox.dtb
-
-always		:= $(dtb-y)
-subdir-y	:= $(dts-dirs)
-clean-files	:= *.dtb