This patch provides a support to build the user specified dts.
Signed-off-by: Jagannadha Sutradharudu Teki <jaga...@xilinx.com>
---
Changes for v2:
- Update the logic for not giving an error if DEVICE_TREE defined
- Documented the build steps
doc/README.fdt-control | 8 ++++++++
dts/Makefile | 2 ++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/doc/README.fdt-control b/doc/README.fdt-control
index 85bda03..8352835 100644
--- a/doc/README.fdt-control
+++ b/doc/README.fdt-control
@@ -156,6 +156,14 @@ To use this, put something like this in your board header
file:
#define CONFIG_EXTRA_ENV_SETTINGS "fdtcontroladdr=10000\0"
+Build:
+
+After board configuration is done, fdt supported u-boot can be build in two
ways:
+1) build the default dts which is defined from CONFIG_DEFAULT_DEVICE_TREE
+ $ make
+2) build the user specified dts file
+ $ make DEVICE_TREE=<dts-file-name>
+
Limitations
-----------
diff --git a/dts/Makefile b/dts/Makefile
index 785104e..01364d7 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -27,9 +27,11 @@ include $(TOPDIR)/config.mk
LIB = $(obj)libdts.o
+ifeq ($(DEVICE_TREE),)
$(if $(CONFIG_DEFAULT_DEVICE_TREE),,\
$(error Please define CONFIG_DEFAULT_DEVICE_TREE in your board header file))
DEVICE_TREE = $(subst ",,$(CONFIG_DEFAULT_DEVICE_TREE))
+endif
$(if $(CONFIG_ARCH_DEVICE_TREE),,\
$(error Your architecture does not have device tree support enabled. \
--
1.7.4
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