arm: omap3: Compile clock.c with -marm option to unbreak OMAP3530

Boards with OMAP3530 SoC fail to boot since commit bd2c4522c26d5
("ti: armv7: enable EXT support in SPL (using ti_armv7_common.h)")
because it enabled the use of Thumb2 for the SPL.

Experiments have shown that the deadlock happens in the
prcm_init() function from 'arch/arm/mach-omap2/omap3/clock.c'.

This patch enforces the compilation of clock.c source file in
ARM mode and makes the deadlock disappear. We are yet to figure
out the root cause of the problem. Still this is somewhat
better than having non-bootable boards for years.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

diff --git a/arch/arm/mach-omap2/omap3/Makefile b/arch/arm/mach-omap2/omap3/Makefile
index b2fce966d9a428eea917b3769f575c114d2d110b..06cc9f26587e60bc1a03ce8a9b59fee2b4236a57 100644 (file)
--- a/arch/arm/mach-omap2/omap3/Makefile
+++ b/arch/arm/mach-omap2/omap3/Makefile
@@ -5,6 +5,9 @@
 # SPDX-License-Identifier:     GPL-2.0+
 #
 
+# If clock.c is compiled for Thumb2, then it fails on OMAP3530
+CFLAGS_clock.o += -marm
+
 obj-y  := lowlevel_init.o
 
 obj-y  += board.o