linux-kernel - Re: [PATCH v6 04/10] arm/tegra: prepare early init for multiple tegra variants

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Date:	Thu, 8 Dec 2011 10:29:43 -0800
From:	Colin Cross <ccross@...roid.com>
To:	Stephen Warren <swarren@...dia.com>
Cc:	Peter De Schrijver <pdeschrijver@...dia.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Randy Dunlap <rdunlap@...otime.net>,
	Russell King <linux@....linux.org.uk>,
	Olof Johansson <olof@...om.net>, Gary King <gking@...dia.com>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH v6 04/10] arm/tegra: prepare early init for multiple tegra variants

On Thu, Dec 8, 2011 at 9:57 AM, Stephen Warren <swarren@...dia.com> wrote:
> Peter De Schrijver wrote at Thursday, December 08, 2011 5:44 AM:
>> This patch splits the early init code in a common and a tegra20 specific part.
>> L2 cache initialization is generalized and discovers the cache associativity
>> at runtime. Also use arm_pm_restart instead of arm_arch_reset and reset the
>> the system using the PMC reset feature rather then the CAR system reset.
>
> This one really should be at least 3 separate patches:
> * s/tegra_init_early/tegra20_init_early/ in machine descriptions
> * Switch reset mechanism from CAR to PMC
> * tegra_init_cache modifications
> * Not sure if all the ifdef additions go in the above, or if some should be
>  separate?
>
> Still, I think it's probably OK to go in as it is even if it isn't optimal.

Please at least split out the reset change.  Does using the PMC reset
instead of the CAR reset still result in a warm reset, or does it
change to a cold reset?
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