linux-kernel - RE: [PATCH v1 8/8] ARM: tegra: support for secondary cores on Tegra30

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Message-ID: <74CDBE0F657A3D45AFBB94109FB122FF178CB8247E@HQMAIL01.nvidia.com>
Date:	Thu, 26 Jan 2012 12:44:45 -0800
From:	Stephen Warren <swarren@...dia.com>
To:	Peter De Schrijver <pdeschrijver@...dia.com>
CC:	Colin Cross <ccross@...roid.com>, Olof Johansson <olof@...om.net>,
	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v1 8/8] ARM: tegra: support for secondary cores on
 Tegra30

Peter De Schrijver wrote at Thursday, January 26, 2012 10:07 AM:
> Add support for bringing up secondary cores on Tegra30. On Tegra30 secondary
> CPU cores are powergated, so we need to turn on the domains before we can bring
> the CPU cores online. Bringing secondary cores online happens early during the
> ssytem boot, so we call powergating initialization from platform early_init
> function.
> 
> Based on work by:
> 
> Scott Williams <scwilliams@...dia.com>
> Colin Cross <ccross@...roid.com>
> Alex Frid <afrid@...dia.com>
> 
> Signed-off-by: Peter De Schrijver <pdeschrijver@...dia.com>

The series,

Acked-by: Stephen Warren <swarren@...dia.com>

(I already saw this a few times before Peter posted it, so any concerns
I had have been fixed. Still, I'm not very familiar with this part of
the code, so it'd be awesome if e.g. Colin could review this too)

Tested-by: Stephen Warren <swarren@...dia.com>

(Booted Tegra20 Harmony, validated 2 CPUs found in dmesg during boot,
validated top showed 2 CPUs being actively used. Booted Tegra30 Cardhu,
validated 4 CPUs found in dmesg during boot, but didn't validate anything
from user-space since the SD controller doesn't work yet and I don't have
an initrd set up to test with).

-- 
nvpublic

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