[PATCH] ARM: exynos_defconfig: Enable big.LITTLE CPUidle support

Sjoerd Simons sjoerd.simons at collabora.co.uk
Fri Aug 28 01:51:42 PDT 2015


On Fri, 2015-08-28 at 10:16 +0200, Javier Martinez Canillas wrote:
> Some Exynos big.LITTLE boards (i.e: Exynos5420 and Exynos5800 based
> Chromebooks) have proper firmware that allow the big.LITTLE CPUidle
> driver to work correctly, so enable support for this.
> 
> Signed-off-by: Javier Martinez Canillas <javier at osg.samsung.com>
> 
> ---
> Kukjin and Krzysztof,
> 
> As you know there are other boards like the Exynos5422 based Odroid 
> XU{3,4}
> whose firmware is broken due leaving CCI in secure mode which means 
> that the
> kernel MCPM support can't properly manage CCI.
> 
> So if you pick this patch, it should be tested in kernelci before 
> appearing
> in linux-next to prevent any boot issues.

I've pushed this patch into Collabora's for-next branch, which should
get picked up by kernelci soonish.

-- 
Sjoerd Simons
Collabora Ltd.



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