board: iot2050: update build documentation for OP-TEE

Set ta-target explicitly to correspond with OP-TEE recipe in
siemens/meta-iot2050.

Errors without explicit set of ta-target:
aarch64-linux-gnu-gcc: error: unrecognized command-line option ‘-mthumb’
aarch64-linux-gnu-gcc: error: unrecognized command-line option ‘-mno-unaligned-access’
aarch64-linux-gnu-gcc: error: unrecognized command-line option ‘-mfloat-abi=hard’
make: *** [mk/compile.mk:159: out/arm-plat-k3/ta_arm32-lib/libdl/dlfcn.o] Error 1

Signed-off-by: Ivan Mikhaylov <ivan.mikhaylov@siemens.com>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>

diff --git a/doc/board/siemens/iot2050.rst b/doc/board/siemens/iot2050.rst
index 592c59be03559b33ba2b42830f189488751563c8..7e97f817ce4c977eb1c42da4ea99d6d646f44274 100644 (file)
--- a/doc/board/siemens/iot2050.rst
+++ b/doc/board/siemens/iot2050.rst
@@ -49,7 +49,7 @@ OP-TEE:
 
 .. code-block:: text
 
- $ make PLATFORM=k3-am65x CFG_ARM64_core=y CFG_TEE_CORE_LOG_LEVEL=2 CFG_CONSOLE_UART=1
+ $ make PLATFORM=k3-am65x CFG_ARM64_core=y CFG_TEE_CORE_LOG_LEVEL=2 CFG_CONSOLE_UART=1 CFG_USER_TA_TARGETS="ta_arm64"
 
 U-Boot: