[meta-xilinx] [PATCH 2/3] device-tree.bb: Provide override device tree directory

[Manjukumar Matha]

Provide a way to override device tree work directory, this might be
particalarly helpful while using this recipes in other layers, for
example in meta-xilinx-tools to override workdir and point it to dtg
based build directory

Signed-off-by: Manjukumar Matha <manjukumar.harthikote-matha at xilinx.com>
---
 recipes-bsp/device-tree/device-tree.bb | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/recipes-bsp/device-tree/device-tree.bb b/recipes-bsp/device-tree/device-tree.bb
index 27e1017..bb2e968 100644
--- a/recipes-bsp/device-tree/device-tree.bb
+++ b/recipes-bsp/device-tree/device-tree.bb
@@ -34,13 +34,15 @@ KERNEL_DTS_INCLUDE_append_zynqmp = " \
 		${STAGING_KERNEL_DIR}/arch/${ARCH}/boot/dts/xilinx \
 		"
 
+DEVICETREE_WORKDIR ?= "${S}"
+
 DEVICETREE_FLAGS ?= " \
-		-R 8 -p 0x3000 -b 0 -i ${S} \
-		${@' '.join(['-i %s' % i for i in d.getVar('KERNEL_DTS_INCLUDE', True).split()])} \
-		"
+               -R 8 -p 0x3000 -b 0 -i ${DEVICETREE_WORKDIR} \
+               ${@' '.join(['-i %s' % i for i in d.getVar('KERNEL_DTS_INCLUDE', True).split()])} \
+               "
 DEVICETREE_OFLAGS ?= "-@ -H epapr"
 DEVICETREE_PP_FLAGS ?= " \
-		-nostdinc -Ulinux -x assembler-with-cpp -I${S} \
+		-nostdinc -Ulinux -x assembler-with-cpp -I${DEVICETREE_WORKDIR} \
 		${@' '.join(['-I%s' % i for i in d.getVar('KERNEL_DTS_INCLUDE', True).split()])} \
 		"
 
@@ -51,7 +53,7 @@ python () {
 }
 
 do_compile() {
-	for DTS_FILE in ${S}/*.dts; do
+	for DTS_FILE in ${DEVICETREE_WORKDIR}/*.dts; do
 		DTS_NAME=`basename -s .dts ${DTS_FILE}`
 		${BUILD_CPP} ${DEVICETREE_PP_FLAGS} -o `basename ${DTS_FILE}`.pp ${DTS_FILE}
 
-- 
2.7.4