[PATCH 06/11] doc: board: samsung: exynos-mobile: add DEVICE_TREE make flag in build

[Kaustabh Chakraborty]

Since there is only one internal device tree allowed in U-Boot, the
DEVICE_TREE flag is required for building images for various devices.
Document it in the build guide.

Signed-off-by: Kaustabh Chakraborty <kauschluss at disroot.org>
---
 doc/board/samsung/exynos-mobile.rst | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/doc/board/samsung/exynos-mobile.rst b/doc/board/samsung/exynos-mobile.rst
index 37718af1fea..d0173b1f8cb 100644
--- a/doc/board/samsung/exynos-mobile.rst
+++ b/doc/board/samsung/exynos-mobile.rst
@@ -25,12 +25,13 @@ If a cross-compiler is required, install it and set it up like so:
 
 	export CROSS_COMPILE=aarch64-linux-gnu-
 
-Then, run the following commands to build U-Boot:
+Then, run the following commands to build U-Boot (replace ``<dtb>`` with the
+upstream DTB path for the target device):
 
 .. prompt:: bash $
 
 	make O=.output exynos-mobile_defconfig
-	make O=.output -j$(nproc)
+	make DEVICE_TREE=<dtb> O=.output -j$(nproc)
 
 If successful, the U-Boot binary will be present in ``.output/u-boot.bin``.
 

-- 
2.52.0