On pią, 2014-11-28 at 21:09 +0530, Abhilash Kesavan wrote: > Hello Krzysztof, > > On Fri, Nov 28, 2014 at 8:49 PM, Krzysztof Kozlowski > <k.kozlowski@xxxxxxxxxxx> wrote: > > On pią, 2014-11-28 at 20:20 +0530, Abhilash Kesavan wrote: > >> The arndale-octa board was giving "imprecise external aborts" during > >> boot-up with MCPM enabled. CCI enablement of the boot cluster was found > >> to be the cause of these aborts (possibly because the secure f/w was not > >> allowing it). Hence, disable CCI for the arndale-octa board. > >> > >> Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx> > >> --- > >> arch/arm/boot/dts/exynos5420-arndale-octa.dts | 4 ++++ > >> arch/arm/boot/dts/exynos5420.dtsi | 2 +- > >> 2 files changed, 5 insertions(+), 1 deletion(-) > > > > I tested these 2 patches on Arndale Octa but there are no improvements. > > I still got imprecise aborts (some not fatal and sometimes killing init > > with full backtrace). > > Thanks for testing. Are you testing this with exynos_defconfig with no > other changes ? Can you please confirm from the bootlog that MCPM and > CCI are not being initialized. > That was exynos_defconfig with disabled DRM and enabled some debug, next-20141128. When I tried only exynos_defconfig (with disabled DRM) it worked fine... So the imprecise aborts were caused by one of following debug options: DEBUG_SECTION_MISMATCH DYNAMIC_DEBUG DEBUG_ATOMIC_SLEEP DEBUG_PREEMPT PROVE_LOCKING LOCKUP_DETECTOR DEBUG_LOCK_ALLOC PROVE_RCU DEBUG_RT_MUTEXES DEBUG_MUTEXES DEBUG_SPINLOCK DEBUG_LIST DEBUG_PAGEALLOC SPARSE_RCU_POINTER DEBUG_FS PM_DEBUG PM_ADVANCED_DEBUG GPIO_SYSFS > Can you remove these 2 patches and on linux-next check if you are > getting aborts even with 5420_MCPM disabled. I tried this already and imprecise aborts shown, however with my debugging options above. Overall the patches seems to work properly (although the debugging issue needs to be resolved still), so: On Arndale Octa (Exynos 5420): Tested-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx> Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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