tune-octeonx2: Do not use -mcpu=octeontx2 with clang

-mcpu=octeontx2 is not implemented in clang, therefore
replace it with -march option denoting underlying
armv8 architecture revision.

 Fixes:

    |   error: unsupported argument 'octeontx2+crypto' to option '-mcpu='
    |   error: unknown target CPU 'octeontx2'

(From OE-Core rev: 64df77a396923a119544cc6842eb7b9ba955126c)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/meta/conf/machine/include/arm/armv8-2a/tune-octeontx2.inc b/meta/conf/machine/include/arm/armv8-2a/tune-octeontx2.inc
index e9d7a59c51..5eed3e5d15 100644
--- a/meta/conf/machine/include/arm/armv8-2a/tune-octeontx2.inc
+++ b/meta/conf/machine/include/arm/armv8-2a/tune-octeontx2.inc
@@ -1,7 +1,9 @@
 DEFAULTTUNE ?= "octeontx2"
 
 TUNEVALID[octeontx2] = "Enable Marvell octeontx2 specific processor optimizations"
-TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'octeontx2', ' -mcpu=octeontx2', '', d)}"
+CPU_TUNE_OCTEONTX2 ?= "-mcpu=octeontx2"
+CPU_TUNE_OCTEONTX2:toolchain-clang = "-march=armv8.2-a"
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'octeontx2', ' ${CPU_TUNE_OCTEONTX2}', '', d)}"
 
 require conf/machine/include/arm/arch-armv8-2a.inc