From: Jagannadha Sutradharudu Teki <jagannadha.sutradharudu-teki@xilinx.com>
Date: Thu, 28 Feb 2013 10:20:18 +0000 (+0000)
Subject: dts/Makefile: Build the user specified dts
X-Git-Tag: v2013.04-rc2~9
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=74de8c9a1672be6c41a6815f484b5958f8241af4;p=oweals%2Fu-boot.git

dts/Makefile: Build the user specified dts

This patch provides a support to build the user specified dts.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Acked-by: Simon Glass <sjg@chromium.org>
---

diff --git a/doc/README.fdt-control b/doc/README.fdt-control
index 85bda03504..8352835ee9 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 6f36153634..03e163ef0a 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. \