linux-kernel - Re: [PATCH] ARM: exynos_defconfig: Enable big.LITTLE CPUidle support

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Message-ID: <1440751902.13118.6.camel@collabora.co.uk>
Date:	Fri, 28 Aug 2015 10:51:42 +0200
From:	Sjoerd Simons <sjoerd.simons@...labora.co.uk>
To:	Javier Martinez Canillas <javier@....samsung.com>,
	linux-kernel@...r.kernel.org
Cc:	Kukjin Kim <kgene@...nel.org>, Thierry Reding <treding@...dia.com>,
	Anand Moon <linux.amoon@...il.com>,
	Russell King <linux@....linux.org.uk>,
	linux-samsung-soc@...r.kernel.org,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Lukasz Majewski <l.majewski@...sung.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: exynos_defconfig: Enable big.LITTLE CPUidle support

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@....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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