commit 01334f974f75d5ce405571095fc888c8ed7846d4
author Kshitij Sisodia <kshitij.sisodia@arm.com> Fri Aug 12 11:53:45 2022 +0100
committer Maksims Svecovs <maksims.svecovs@arm.com> Tue Aug 16 10:24:39 2022 +0000
tree a6190f6ec4f2e634da79ede9a5bbe1cf5f99c66e
parent d9bb3cf4fcc0c96bb9f6e9920eff18bf04d92258

MLECO-3319: Documentation updates for Arm® Corstone™-310.

Documentation updates around use of Arm® Corstone™-310 AVH, especially
in terms of use of timing adapters (TA). Also, use of TA's is forced
off for SSE-310 subsystem's CMake configuration.

Signed-off-by: Kshitij Sisodia <kshitij.sisodia@arm.com>
Signed-off-by: Maksims Svecovs <maksims.svecovs@arm.com>
Change-Id: I66a87060d8d47ce2580aa15f3908be20162eab54

scripts/cmake/platforms/mps3/build_configuration.cmake

diff --git a/scripts/cmake/platforms/mps3/build_configuration.cmake b/scripts/cmake/platforms/mps3/build_configuration.cmake
index 749b1e1..6f91f8c 100644
--- a/scripts/cmake/platforms/mps3/build_configuration.cmake
+++ b/scripts/cmake/platforms/mps3/build_configuration.cmake
@@ -31,8 +31,12 @@
                 CACHE FILEPATH "Toolchain file")
     endif()
 
-    if ((ETHOS_U_NPU_ID STREQUAL U65) AND (TARGET_SUBSYSTEM STREQUAL sse-310))
-        message(FATAL_ERROR "Non compatible Ethos-U NPU processor ${ETHOS_U_NPU_ID} and target subsystem ${TARGET_SUBSYSTEM}")
+    # Arm Corstone-310's timing adapter behaviour is very different to Arm Corstone-300 and cannot
+    # be used for bandwidth/latency related performance sweeps for the Arm Ethos-U NPU. Read
+    # docs/sections/timing_adapters.md for more details.
+    if ((TARGET_SUBSYSTEM STREQUAL sse-310) AND ${ETHOS_U_NPU_TIMING_ADAPTER_ENABLED})
+        message(STATUS "Timing adapter will NOT be used for target subsystem ${TARGET_SUBSYSTEM}")
+        set(ETHOS_U_NPU_TIMING_ADAPTER_ENABLED OFF CACHE BOOL "Use of TA" FORCE)
     endif()
 
     set(LINKER_SCRIPT_NAME "mps3-${TARGET_SUBSYSTEM}" PARENT_SCOPE)