ARM: EXYNOS: Fix CPU idle clock down after CPU off

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On Exynos4 USE_DELAYED_RESET_ASSERTION must be set in
ARM_COREx_OPTION register during CPU power down. This is the proper way
of powering down CPU on Exynos4.

Additionally on Exynos4212 without this the CPU clock down feature won't
work after powering down some CPU and the online CPUs will work at full
frequency chosen by CPUfreq governor.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

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Krzysztof Kozlowski 2014-09-14 02:49:32 +09:00 • committed by Kukjin Kim

parent 27b9ee852c

commit 13cfa6c4f7

2 changed files with 44 additions and 2 deletions

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43

arch/arm/mach-exynos/platsmp.c

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3

arch/arm/mach-exynos/regs-pmu.h

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