[PATCH] ipq40xx: point to externally compiled dtbs in recipes

[Tomasz Maciej Nowak]

From: Tomasz Maciej Nowak <tmn505 at gmail.com>

Adjusting dts will cause a rebuild of whole kernel as the buildroot
considers this a part of kernel source. It's a royal PITA when trying to
prepare support for new device, since this takes a lot of time on slower
systems. As it stands, buildroot itself, with own rule, also compiles
dtbs and the results are $(KDIR)/image-$(DEVICE_DTS).dtb. With setting
DEVICE_DTS_DIR to directory holding the device dts (similarly to some
other targets), buildroot doesn't consider changed dts as part of kernel
source and rebuilds only dtb. This really speeds up development.

Signed-off-by: Tomasz Maciej Nowak <tmn505 at gmail.com>
---
 target/linux/ipq40xx/image/chromium.mk |  2 +-
 target/linux/ipq40xx/image/generic.mk  | 20 ++++++++++----------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/target/linux/ipq40xx/image/chromium.mk b/target/linux/ipq40xx/image/chromium.mk
index 567a5e7ca5c7..2abd2df02ae4 100644
--- a/target/linux/ipq40xx/image/chromium.mk
+++ b/target/linux/ipq40xx/image/chromium.mk
@@ -26,7 +26,7 @@ define Device/google_wifi
 	DEVICE_MODEL := WiFi (Gale)
 	SOC := qcom-ipq4019
 	KERNEL_SUFFIX := -fit-zImage.itb.vboot
-	KERNEL = kernel-bin | fit none $$(DTS_DIR)/$$(DEVICE_DTS).dtb | cros-vboot
+	KERNEL = kernel-bin | fit none $$(KDIR)/image-$$(DEVICE_DTS).dtb | cros-vboot
 	KERNEL_NAME := zImage
 	IMAGES += factory.bin
 	IMAGE/factory.bin := cros-gpt | append-kernel-part | append-rootfs
diff --git a/target/linux/ipq40xx/image/generic.mk b/target/linux/ipq40xx/image/generic.mk
index 792122f7a1ae..6daebd5ed0f5 100644
--- a/target/linux/ipq40xx/image/generic.mk
+++ b/target/linux/ipq40xx/image/generic.mk
@@ -5,19 +5,19 @@ DEVICE_VARS += WRGG_DEVNAME WRGG_SIGNATURE
 
 define Device/FitImage
 	KERNEL_SUFFIX := -fit-uImage.itb
-	KERNEL = kernel-bin | gzip | fit gzip $$(DTS_DIR)/$$(DEVICE_DTS).dtb
+	KERNEL = kernel-bin | gzip | fit gzip $$(KDIR)/image-$$(DEVICE_DTS).dtb
 	KERNEL_NAME := Image
 endef
 
 define Device/FitImageLzma
 	KERNEL_SUFFIX := -fit-uImage.itb
-	KERNEL = kernel-bin | lzma | fit lzma $$(DTS_DIR)/$$(DEVICE_DTS).dtb
+	KERNEL = kernel-bin | lzma | fit lzma $$(KDIR)/image-$$(DEVICE_DTS).dtb
 	KERNEL_NAME := Image
 endef
 
 define Device/FitzImage
 	KERNEL_SUFFIX := -fit-zImage.itb
-	KERNEL = kernel-bin | fit none $$(DTS_DIR)/$$(DEVICE_DTS).dtb
+	KERNEL = kernel-bin | fit none $$(KDIR)/image-$$(DEVICE_DTS).dtb
 	KERNEL_NAME := zImage
 endef
 
@@ -308,8 +308,8 @@ TARGET_DEVICES += buffalo_wtr-m2133hp
 
 define Device/cellc_rtl30vw
 	KERNEL_SUFFIX := -fit-zImage.itb
-	KERNEL_INITRAMFS = kernel-bin | gzip | fit gzip $$(DTS_DIR)/$$(DEVICE_DTS).dtb
-	KERNEL = kernel-bin | fit none $$(DTS_DIR)/$$(DEVICE_DTS).dtb | uImage lzma | pad-to 2048
+	KERNEL_INITRAMFS = kernel-bin | gzip | fit gzip $$(KDIR)/image-$$(DEVICE_DTS).dtb
+	KERNEL = kernel-bin | fit none $$(KDIR)/image-$$(DEVICE_DTS).dtb | uImage lzma | pad-to 2048
 	KERNEL_NAME := zImage
 	KERNEL_IN_UBI :=
 	IMAGES := nand-factory.bin nand-sysupgrade.bin
@@ -376,7 +376,7 @@ define Device/devolo_magic-2-wifi-next
 
 	# If the bootloader sees 0xDEADC0DE and this trailer at the 64k boundary of a TFTP image
 	# it will bootm it, just like we want for the initramfs.
-	KERNEL_INITRAMFS := kernel-bin | gzip | fit gzip $$(DTS_DIR)/$$(DEVICE_DTS).dtb | pad-to 64k |\
+	KERNEL_INITRAMFS := kernel-bin | gzip | fit gzip $$(KDIR)/image-$$(DEVICE_DTS).dtb | pad-to 64k |\
 		append-string -e '\xDE\xAD\xC0\xDE{"fl_initramfs":""}\x00'
 
 	IMAGE_SIZE := 26624k
@@ -832,7 +832,7 @@ define Device/openmesh_a42
 	SOC := qcom-ipq4018
 	DEVICE_DTS_CONFIG := config at om.a42
 	BLOCKSIZE := 64k
-	KERNEL = kernel-bin | lzma | fit lzma $$(DTS_DIR)/$$(DEVICE_DTS).dtb | pad-to $$(BLOCKSIZE)
+	KERNEL = kernel-bin | lzma | fit lzma $$(KDIR)/image-$$(DEVICE_DTS).dtb | pad-to $$(BLOCKSIZE)
 	IMAGE_SIZE := 15616k
 	IMAGES += factory.bin
 	IMAGE/factory.bin := append-rootfs | pad-rootfs | openmesh-image ce_type=A42
@@ -847,7 +847,7 @@ define Device/openmesh_a62
 	SOC := qcom-ipq4019
 	DEVICE_DTS_CONFIG := config at om.a62
 	BLOCKSIZE := 64k
-	KERNEL = kernel-bin | lzma | fit lzma $$(DTS_DIR)/$$(DEVICE_DTS).dtb | pad-to $$(BLOCKSIZE)
+	KERNEL = kernel-bin | lzma | fit lzma $$(KDIR)/image-$$(DEVICE_DTS).dtb | pad-to $$(BLOCKSIZE)
 	IMAGE_SIZE := 15552k
 	IMAGES += factory.bin
 	IMAGE/factory.bin := append-rootfs | pad-rootfs | openmesh-image ce_type=A62
@@ -889,7 +889,7 @@ define Device/plasmacloud_pa1200
 	SOC := qcom-ipq4018
 	DEVICE_DTS_CONFIG := config at pc.pa1200
 	BLOCKSIZE := 64k
-	KERNEL = kernel-bin | lzma | fit lzma $$(DTS_DIR)/$$(DEVICE_DTS).dtb | pad-to $$(BLOCKSIZE)
+	KERNEL = kernel-bin | lzma | fit lzma $$(KDIR)/image-$$(DEVICE_DTS).dtb | pad-to $$(BLOCKSIZE)
 	IMAGE_SIZE := 15616k
 	IMAGES += factory.bin
 	IMAGE/factory.bin := append-rootfs | pad-rootfs | openmesh-image ce_type=PA1200
@@ -904,7 +904,7 @@ define Device/plasmacloud_pa2200
 	SOC := qcom-ipq4019
 	DEVICE_DTS_CONFIG := config at pc.pa2200
 	BLOCKSIZE := 64k
-	KERNEL = kernel-bin | lzma | fit lzma $$(DTS_DIR)/$$(DEVICE_DTS).dtb | pad-to $$(BLOCKSIZE)
+	KERNEL = kernel-bin | lzma | fit lzma $$(KDIR)/image-$$(DEVICE_DTS).dtb | pad-to $$(BLOCKSIZE)
 	IMAGE_SIZE := 15552k
 	IMAGES += factory.bin
 	IMAGE/factory.bin := append-rootfs | pad-rootfs | openmesh-image ce_type=PA2200
-- 
2.37.2