linux-kernel - RE: [PATCH v2 8/8] ARM: tegra: support for secondary cores on Tegra30

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Date:	Thu, 2 Feb 2012 10:04:12 -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>,
	Gary King <gking@...dia.com>, 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 v2 8/8] ARM: tegra: support for secondary cores on
 Tegra30

Peter De Schrijver wrote at Tuesday, January 31, 2012 9:41 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
> sytem 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,

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

This time, since I now have the SD card working, I managed to test real
user-space processes running on all 4 cores.

Note, patch 3 shouldn't compile due to a typo in a .size directive. It
does for me, so I could test this! But, it didn't for Olof. Aside from
that (which perhaps Olof would fixup during patch application?),

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

I also have a query on patch 3 about enabling coresight, but that's more
for my education than something that'd block patch application.

-- 
nvpublic

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